DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.920s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-14 15:54:22,501 autosynth [ERROR] > Synthesis failed
2020-06-14 15:54:22,501 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 5f005b4 deps: update dependency com.google.protobuf:protobuf-bom to v3.12.2 (#8)
2020-06-14 15:54:22,507 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-14 15:54:22,514 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-15 02:45:47,914 autosynth [ERROR] > Synthesis failed
2020-06-15 02:45:47,915 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 5f005b4 deps: update dependency com.google.protobuf:protobuf-bom to v3.12.2 (#8)
2020-06-15 02:45:47,920 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-15 02:45:47,924 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-15 02:45:48,066 autosynth [DEBUG] > Running: git checkout 5f005b45498dc87aeb8cab35d72fbaae04386c24
Note: checking out '5f005b45498dc87aeb8cab35d72fbaae04386c24'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 5f005b4 deps: update dependency com.google.protobuf:protobuf-bom to v3.12.2 (#8)
2020-06-15 02:45:48,071 autosynth [DEBUG] > Running: git checkout a0ee80e0492a03b9b2bfefb5cca7eaf17bf10438
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at a0ee80e feat: handle standardize START/END_EXCLUDE for snippets (#624)
2020-06-15 02:45:48,089 autosynth [DEBUG] > Running: git branch -f autosynth-72
2020-06-15 02:45:48,093 autosynth [DEBUG] > Running: git checkout autosynth-72
Switched to branch 'autosynth-72'
2020-06-15 02:45:48,097 autosynth [INFO] > Running synthtool
2020-06-15 02:45:48,097 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-15 02:45:48,097 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/72/sponge_log.log
2020-06-15 02:45:48,099 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-15 02:45:48,315 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-72
nothing to commit, working tree clean
2020-06-15 02:45:48,447 synthtool [DEBUG] > Ensuring dependencies.
2020-06-15 02:45:48,458 synthtool [DEBUG] > Cloning googleapis.
2020-06-15 02:45:48,826 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-15 02:45:50,587 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "855b1960d5972f76da6bee2f5b6213540cf11e72c887cec0038e573f14e0a80b"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.752s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-15 02:45:50,624 autosynth [ERROR] > Synthesis failed
2020-06-15 02:45:50,624 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 5f005b4 deps: update dependency com.google.protobuf:protobuf-bom to v3.12.2 (#8)
2020-06-15 02:45:50,629 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-15 02:45:50,633 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
n run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-15 18:12:07,113 autosynth [ERROR] > Synthesis failed
2020-06-15 18:12:07,114 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-15 18:12:07,119 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-15 18:12:07,124 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-15 18:12:07,266 autosynth [DEBUG] > Running: git checkout c64974f7e45b7a4e878abb48e75c329bd88e51f3
Note: checking out 'c64974f7e45b7a4e878abb48e75c329bd88e51f3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-15 18:12:07,320 autosynth [DEBUG] > Running: git checkout 6d3eed67a45fd58f9c7bfa173c32e4fd4fed058f
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at 6d3eed6 samples(java): fix bad character in samples.cfg from copy/paste (#626)
2020-06-15 18:12:07,340 autosynth [DEBUG] > Running: git branch -f autosynth-74
2020-06-15 18:12:07,345 autosynth [DEBUG] > Running: git checkout autosynth-74
Switched to branch 'autosynth-74'
2020-06-15 18:12:07,350 autosynth [INFO] > Running synthtool
2020-06-15 18:12:07,350 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-15 18:12:07,350 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/74/sponge_log.log
2020-06-15 18:12:07,353 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-15 18:12:07,566 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-74
nothing to commit, working tree clean
2020-06-15 18:12:07,701 synthtool [DEBUG] > Ensuring dependencies.
2020-06-15 18:12:07,713 synthtool [DEBUG] > Cloning googleapis.
2020-06-15 18:12:08,083 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-15 18:12:09,695 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.603s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-15 18:12:09,742 autosynth [ERROR] > Synthesis failed
2020-06-15 18:12:09,743 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-15 18:12:09,748 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-15 18:12:09,753 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
n run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-16 02:25:18,940 autosynth [ERROR] > Synthesis failed
2020-06-16 02:25:18,941 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-16 02:25:18,946 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-16 02:25:18,951 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-16 02:25:19,099 autosynth [DEBUG] > Running: git checkout c64974f7e45b7a4e878abb48e75c329bd88e51f3
Note: checking out 'c64974f7e45b7a4e878abb48e75c329bd88e51f3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-16 02:25:19,105 autosynth [DEBUG] > Running: git checkout 6d3eed67a45fd58f9c7bfa173c32e4fd4fed058f
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at 6d3eed6 samples(java): fix bad character in samples.cfg from copy/paste (#626)
2020-06-16 02:25:19,124 autosynth [DEBUG] > Running: git branch -f autosynth-74
2020-06-16 02:25:19,129 autosynth [DEBUG] > Running: git checkout autosynth-74
Switched to branch 'autosynth-74'
2020-06-16 02:25:19,134 autosynth [INFO] > Running synthtool
2020-06-16 02:25:19,134 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-16 02:25:19,134 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/74/sponge_log.log
2020-06-16 02:25:19,137 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-16 02:25:19,352 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-74
nothing to commit, working tree clean
2020-06-16 02:25:19,491 synthtool [DEBUG] > Ensuring dependencies.
2020-06-16 02:25:19,504 synthtool [DEBUG] > Cloning googleapis.
2020-06-16 02:25:19,853 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-16 02:25:21,431 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.568s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-16 02:25:21,480 autosynth [ERROR] > Synthesis failed
2020-06-16 02:25:21,480 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-16 02:25:21,487 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-16 02:25:21,493 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
e 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-16 13:06:35,627 autosynth [ERROR] > Synthesis failed
2020-06-16 13:06:35,627 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-16 13:06:35,633 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-16 13:06:35,637 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-16 13:06:35,769 autosynth [DEBUG] > Running: git checkout c64974f7e45b7a4e878abb48e75c329bd88e51f3
Note: checking out 'c64974f7e45b7a4e878abb48e75c329bd88e51f3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-16 13:06:35,826 autosynth [DEBUG] > Running: git checkout c4f3059c27591eb24d6942a0e357ec94c80459f2
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at c4f3059 ci(java): fix typo in java integration test secret name (#628)
2020-06-16 13:06:35,844 autosynth [DEBUG] > Running: git branch -f autosynth-76
2020-06-16 13:06:35,848 autosynth [DEBUG] > Running: git checkout autosynth-76
Switched to branch 'autosynth-76'
2020-06-16 13:06:35,853 autosynth [INFO] > Running synthtool
2020-06-16 13:06:35,853 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-16 13:06:35,853 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/76/sponge_log.log
2020-06-16 13:06:35,855 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-16 13:06:36,055 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-76
nothing to commit, working tree clean
2020-06-16 13:06:36,183 synthtool [DEBUG] > Ensuring dependencies.
2020-06-16 13:06:36,194 synthtool [DEBUG] > Cloning googleapis.
2020-06-16 13:06:36,552 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-16 13:06:38,096 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.535s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-16 13:06:38,135 autosynth [ERROR] > Synthesis failed
2020-06-16 13:06:38,135 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-16 13:06:38,142 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-16 13:06:38,147 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
e 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-17 03:01:37,997 autosynth [ERROR] > Synthesis failed
2020-06-17 03:01:37,997 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-17 03:01:38,003 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-17 03:01:38,008 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-17 03:01:38,129 autosynth [DEBUG] > Running: git checkout c64974f7e45b7a4e878abb48e75c329bd88e51f3
Note: checking out 'c64974f7e45b7a4e878abb48e75c329bd88e51f3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-17 03:01:38,135 autosynth [DEBUG] > Running: git checkout c4f3059c27591eb24d6942a0e357ec94c80459f2
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at c4f3059 ci(java): fix typo in java integration test secret name (#628)
2020-06-17 03:01:38,153 autosynth [DEBUG] > Running: git branch -f autosynth-76
2020-06-17 03:01:38,158 autosynth [DEBUG] > Running: git checkout autosynth-76
Switched to branch 'autosynth-76'
2020-06-17 03:01:38,162 autosynth [INFO] > Running synthtool
2020-06-17 03:01:38,163 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-17 03:01:38,163 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/76/sponge_log.log
2020-06-17 03:01:38,165 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-17 03:01:38,375 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-76
nothing to commit, working tree clean
2020-06-17 03:01:38,510 synthtool [DEBUG] > Ensuring dependencies.
2020-06-17 03:01:38,521 synthtool [DEBUG] > Cloning googleapis.
2020-06-17 03:01:38,910 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-17 03:01:40,584 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.666s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-17 03:01:40,633 autosynth [ERROR] > Synthesis failed
2020-06-17 03:01:40,633 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-17 03:01:40,639 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-17 03:01:40,644 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
n3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-17 16:07:18,749 autosynth [ERROR] > Synthesis failed
2020-06-17 16:07:18,749 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-17 16:07:18,753 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-17 16:07:18,758 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-17 16:07:18,892 autosynth [DEBUG] > Running: git checkout c64974f7e45b7a4e878abb48e75c329bd88e51f3
Note: checking out 'c64974f7e45b7a4e878abb48e75c329bd88e51f3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-17 16:07:18,897 autosynth [DEBUG] > Running: git checkout b10590a4a1568548dd13cfcea9aa11d40898144b
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at b10590a fix: update node issue template (#582)
2020-06-17 16:07:18,914 autosynth [DEBUG] > Running: git branch -f autosynth-77
2020-06-17 16:07:18,918 autosynth [DEBUG] > Running: git checkout autosynth-77
Switched to branch 'autosynth-77'
2020-06-17 16:07:18,921 autosynth [INFO] > Running synthtool
2020-06-17 16:07:18,921 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-17 16:07:18,922 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/77/sponge_log.log
2020-06-17 16:07:18,923 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-17 16:07:19,141 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-77
nothing to commit, working tree clean
2020-06-17 16:07:19,276 synthtool [DEBUG] > Ensuring dependencies.
2020-06-17 16:07:19,285 synthtool [DEBUG] > Cloning googleapis.
2020-06-17 16:07:19,620 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-17 16:07:21,277 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.649s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-17 16:07:21,319 autosynth [ERROR] > Synthesis failed
2020-06-17 16:07:21,319 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at c64974f build(deps): update dependency com.google.cloud:google-cloud-shared-config to v0.8.1
2020-06-17 16:07:21,324 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-17 16:07:21,328 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
nv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-18 02:58:45,875 autosynth [ERROR] > Synthesis failed
2020-06-18 02:58:45,875 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-18 02:58:45,880 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-18 02:58:45,884 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-18 02:58:46,004 autosynth [DEBUG] > Running: git checkout 82c4bf50f419b7f57f9a0d15a554b7e8509b99db
Note: checking out '82c4bf50f419b7f57f9a0d15a554b7e8509b99db'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-18 02:58:46,008 autosynth [DEBUG] > Running: git checkout b10590a4a1568548dd13cfcea9aa11d40898144b
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at b10590a fix: update node issue template (#582)
2020-06-18 02:58:46,026 autosynth [DEBUG] > Running: git branch -f autosynth-77
2020-06-18 02:58:46,029 autosynth [DEBUG] > Running: git checkout autosynth-77
Switched to branch 'autosynth-77'
2020-06-18 02:58:46,033 autosynth [INFO] > Running synthtool
2020-06-18 02:58:46,033 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-18 02:58:46,033 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/77/sponge_log.log
2020-06-18 02:58:46,035 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-18 02:58:46,247 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-77
nothing to commit, working tree clean
2020-06-18 02:58:46,380 synthtool [DEBUG] > Ensuring dependencies.
2020-06-18 02:58:46,389 synthtool [DEBUG] > Cloning googleapis.
2020-06-18 02:58:47,034 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-18 02:58:48,612 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.571s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-18 02:58:48,662 autosynth [ERROR] > Synthesis failed
2020-06-18 02:58:48,662 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-18 02:58:48,667 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-18 02:58:48,671 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
ersions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-18 15:46:36,468 autosynth [ERROR] > Synthesis failed
2020-06-18 15:46:36,468 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-18 15:46:36,474 autosynth [DEBUG] > Running: git checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-18 15:46:36,478 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-18 15:46:36,604 autosynth [DEBUG] > Running: git checkout 82c4bf50f419b7f57f9a0d15a554b7e8509b99db
Note: checking out '82c4bf50f419b7f57f9a0d15a554b7e8509b99db'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-18 15:46:36,610 autosynth [DEBUG] > Running: git checkout 8e7edfbb4f9db7a86a1c61b46bde7c8e0782abca
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at 8e7edfb fix: set default timeout to 5 hours (#631)
2020-06-18 15:46:36,629 autosynth [DEBUG] > Running: git branch -f autosynth-79
2020-06-18 15:46:36,634 autosynth [DEBUG] > Running: git checkout autosynth-79
Switched to branch 'autosynth-79'
2020-06-18 15:46:36,638 autosynth [INFO] > Running synthtool
2020-06-18 15:46:36,639 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-18 15:46:36,639 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/79/sponge_log.log
2020-06-18 15:46:36,641 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-18 15:46:36,856 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-79
nothing to commit, working tree clean
2020-06-18 15:46:36,998 synthtool [DEBUG] > Ensuring dependencies.
2020-06-18 15:46:37,011 synthtool [DEBUG] > Cloning googleapis.
2020-06-18 15:46:37,673 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-18 15:46:39,251 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.569s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-18 15:46:39,300 autosynth [ERROR] > Synthesis failed
2020-06-18 15:46:39,300 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-18 15:46:39,306 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-18 15:46:39,311 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
eckout autosynth-self
Switched to branch 'autosynth-self'
2020-06-19 02:54:45,053 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-19 02:54:45,200 autosynth [DEBUG] > Running: git checkout 82c4bf50f419b7f57f9a0d15a554b7e8509b99db
Note: checking out '82c4bf50f419b7f57f9a0d15a554b7e8509b99db'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-19 02:54:45,256 autosynth [DEBUG] > Running: git checkout 313eb608348d6080a0f118402219a0accf16e671
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at 313eb60 docs: synthtool readme fixes for relative links (#630)
2020-06-19 02:54:45,282 autosynth [DEBUG] > Running: git branch -f autosynth-80
2020-06-19 02:54:45,286 autosynth [DEBUG] > Running: git checkout autosynth-80
Switched to branch 'autosynth-80'
2020-06-19 02:54:45,291 autosynth [INFO] > Running synthtool
2020-06-19 02:54:45,292 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-19 02:54:45,292 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/80/sponge_log.log
2020-06-19 02:54:45,294 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-19 02:54:45,514 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-80
nothing to commit, working tree clean
2020-06-19 02:54:45,671 synthtool [DEBUG] > Ensuring dependencies.
2020-06-19 02:54:45,683 synthtool [DEBUG] > Cloning googleapis.
2020-06-19 02:54:46,327 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-19 02:54:47,946 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'gapic_generator_python' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0d98c514fbe86b463310bd284fab8793df25979aea66926ed943b6a6a1c3bb77"
DEBUG: Call stack for the definition of repository 'gapic_generator_python' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:219:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.611s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-19 02:54:48,012 autosynth [ERROR] > Synthesis failed
2020-06-19 02:54:48,012 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-19 02:54:48,018 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-19 02:54:48,023 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
it checkout autosynth-self
Switched to branch 'autosynth-self'
2020-06-19 14:34:45,741 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-19 14:34:45,870 autosynth [DEBUG] > Running: git checkout 82c4bf50f419b7f57f9a0d15a554b7e8509b99db
Note: checking out '82c4bf50f419b7f57f9a0d15a554b7e8509b99db'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-19 14:34:45,875 autosynth [DEBUG] > Running: git checkout 483f18635c3af10031435535268abe001ad69e7c
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at 483f186 chore: assign code ownership of template directories to language teams (#634)
2020-06-19 14:34:45,894 autosynth [DEBUG] > Running: git branch -f autosynth-84
2020-06-19 14:34:45,899 autosynth [DEBUG] > Running: git checkout autosynth-84
Switched to branch 'autosynth-84'
2020-06-19 14:34:45,903 autosynth [INFO] > Running synthtool
2020-06-19 14:34:45,903 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-19 14:34:45,903 autosynth [DEBUG] > log_file_path: /tmpfs/src/logs/java-iam/84/sponge_log.log
2020-06-19 14:34:45,906 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-19 14:34:46,109 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-84
nothing to commit, working tree clean
2020-06-19 14:34:46,240 synthtool [DEBUG] > Ensuring dependencies.
2020-06-19 14:34:46,251 synthtool [DEBUG] > Cloning googleapis.
2020-06-19 14:34:46,636 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-19 14:34:48,236 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'gapic_generator_python' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0d98c514fbe86b463310bd284fab8793df25979aea66926ed943b6a6a1c3bb77"
DEBUG: Call stack for the definition of repository 'gapic_generator_python' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:219:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.591s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-19 14:34:48,278 autosynth [ERROR] > Synthesis failed
2020-06-19 14:34:48,288 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-19 14:34:48,294 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-19 14:34:48,299 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 649, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 498, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 629, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 393, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 403, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 275, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
witched to branch 'autosynth-self'
2020-06-19 15:50:48,318 autosynth [ERROR] > Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.
2020-06-19 15:50:48,441 autosynth [DEBUG] > Running: git checkout 82c4bf50f419b7f57f9a0d15a554b7e8509b99db
Note: checking out '82c4bf50f419b7f57f9a0d15a554b7e8509b99db'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-19 15:50:48,446 autosynth [DEBUG] > Running: git checkout 483f18635c3af10031435535268abe001ad69e7c
Previous HEAD position was 04cb397 chore: add labels with context info (#518)
HEAD is now at 483f186 chore: assign code ownership of template directories to language teams (#634)
2020-06-19 15:50:48,464 autosynth [DEBUG] > Running: git branch -f autosynth-84
2020-06-19 15:50:48,467 autosynth [DEBUG] > Running: git checkout autosynth-84
Switched to branch 'autosynth-84'
2020-06-19 15:50:48,471 autosynth [INFO] > Running synthtool
2020-06-19 15:50:48,471 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-19 15:50:48,471 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/84/sponge_log.log
2020-06-19 15:50:48,473 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-19 15:50:48,685 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-84
nothing to commit, working tree clean
2020-06-19 15:50:48,818 synthtool [DEBUG] > Ensuring dependencies.
2020-06-19 15:50:48,829 synthtool [DEBUG] > Cloning googleapis.
2020-06-19 15:50:49,252 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-19 15:50:51,016 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'gapic_generator_python' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0d98c514fbe86b463310bd284fab8793df25979aea66926ed943b6a6a1c3bb77"
DEBUG: Call stack for the definition of repository 'gapic_generator_python' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:219:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.756s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-19 15:50:51,052 autosynth [ERROR] > Synthesis failed
2020-06-19 15:50:51,052 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-19 15:50:51,057 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-19 15:50:51,061 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 625, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 482, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 605, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 377, in synthesize_loop
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 387, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
): run dependency test on Java 8 and 11 (#639)
2020-06-20 03:39:27,891 autosynth [DEBUG] > Running: git branch -f autosynth-86
2020-06-20 03:39:27,895 autosynth [DEBUG] > Running: git checkout autosynth-86
Switched to branch 'autosynth-86'
2020-06-20 03:39:27,899 autosynth [INFO] > Running synthtool
2020-06-20 03:39:27,899 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-20 03:39:27,899 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/86/sponge_log.log
2020-06-20 03:39:27,901 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-20 03:39:28,102 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-86
nothing to commit, working tree clean
2020-06-20 03:39:28,232 synthtool [DEBUG] > Ensuring dependencies.
2020-06-20 03:39:28,243 synthtool [DEBUG] > Cloning googleapis.
2020-06-20 03:39:28,884 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-20 03:39:30,442 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:76:1
DEBUG: Rule 'protoc_docs_plugin' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "33b387245455775e0de45869c7355cc5a9e98b396a6fc43b02812a63b75fee20"
DEBUG: Call stack for the definition of repository 'protoc_docs_plugin' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:196:1
DEBUG: Rule 'gapic_generator_python' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0d98c514fbe86b463310bd284fab8793df25979aea66926ed943b6a6a1c3bb77"
DEBUG: Call stack for the definition of repository 'gapic_generator_python' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:219:1
DEBUG: Rule 'com_googleapis_gapic_generator_go' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "12bfed7873f085093cd60615bd113178ecf36396af0c2ca25e6cd4d4bebdd198"
DEBUG: Call stack for the definition of repository 'com_googleapis_gapic_generator_go' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:256:1
DEBUG: Rule 'gapic_generator_typescript' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "161462fb86a7241006b60f6c4c816924ddcff08b8691f258f3804cfc6714dfde"
DEBUG: Call stack for the definition of repository 'gapic_generator_typescript' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>
 - /home/kbuilder/.cache/synthtool/googleapis/WORKSPACE:275:1
ERROR: Skipping '//google/iam/v1:google-iam-v1-java': no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
WARNING: Target pattern parsing failed.
ERROR: no such target '//google/iam/v1:google-iam-v1-java': target 'google-iam-v1-java' not declared in package 'google/iam/v1' defined by /home/kbuilder/.cache/synthtool/googleapis/google/iam/v1/BUILD.bazel
INFO: Elapsed time: 1.551s
INFO: 0 processes.

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 102, in <module>
    main()
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/tmpfs/src/github/synthtool/env/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/__main__.py", line 94, in main
    spec.loader.exec_module(synth_module)  # type: ignore
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/kbuilder/.cache/synthtool/java-iam/synth.py", line 31, in <module>
    bazel_target=f'//google/iam/{version}:google-iam-{version}-java',
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 61, in java_library
    return self._generate_code(service, version, "java", **kwargs)
  File "/tmpfs/src/github/synthtool/synthtool/gcp/gapic_bazel.py", line 180, in _generate_code
    shell.run(bazel_run_args)
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 39, in run
    raise exc
  File "/tmpfs/src/github/synthtool/synthtool/shell.py", line 33, in run
    encoding="utf-8",
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 438, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bazel', '--max_idle_secs=60', 'build', '//google/iam/v1:google-iam-v1-java']' returned non-zero exit status 1.
2020-06-20 03:39:30,482 autosynth [ERROR] > Synthesis failed
2020-06-20 03:39:30,482 autosynth [DEBUG] > Running: git reset --hard HEAD
HEAD is now at 82c4bf5 feat(deps): adopt flatten plugin and google-cloud-shared-dependencies (#14)
2020-06-20 03:39:30,487 autosynth [DEBUG] > Running: git checkout autosynth
Switched to branch 'autosynth'
2020-06-20 03:39:30,492 autosynth [DEBUG] > Running: git clean -fdx
Removing __pycache__/
Traceback (most recent call last):
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 367, in synthesize_loop
    synthesize_inner_loop(fork, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 411, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 649, in <module>
    main()
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 506, in main
    return _inner_main(temp_dir)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 629, in _inner_main
    commit_count = synthesize_loop(x, multiple_prs, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 375, in synthesize_loop
    synthesize_loop_single_pr(toolbox, change_pusher, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 401, in synthesize_loop_single_pr
    synthesize_inner_loop(toolbox, synthesizer)
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 411, in synthesize_inner_loop
    synthesizer, len(toolbox.versions) - 1
  File "/tmpfs/src/github/synthtool/autosynth/synth.py", line 266, in synthesize_version_in_new_branch
    synthesizer.synthesize(synth_log_path, self.environ)
  File "/tmpfs/src/github/synthtool/autosynth/synthesizer.py", line 120, in synthesize
    synth_proc.check_returncode()  # Raise an exception.
  File "/home/kbuilder/.pyenv/versions/3.6.9/lib/python3.6/subprocess.py", line 389, in check_returncode
    self.stderr)
subprocess.CalledProcessError: Command '['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']' returned non-zero exit status 1.

Google internal developers can see the full log here.

Autosynth is still having trouble generating java-iam. :sob:
Here's the output from running synth.py:
): run dependency test on Java 8 and 11 (#639)
2020-06-20 15:22:18,666 autosynth [DEBUG] > Running: git branch -f autosynth-86
2020-06-20 15:22:18,670 autosynth [DEBUG] > Running: git checkout autosynth-86
Switched to branch 'autosynth-86'
2020-06-20 15:22:18,676 autosynth [INFO] > Running synthtool
2020-06-20 15:22:18,676 autosynth [INFO] > ['/tmpfs/src/github/synthtool/env/bin/python3', '-m', 'synthtool', '--metadata', 'synth.metadata', 'synth.py', '--']
2020-06-20 15:22:18,676 autosynth [DEBUG] > log_file_path: /tmpfs/src/github/synthtool/logs/googleapis/java-iam/86/sponge_log.log
2020-06-20 15:22:18,679 autosynth [DEBUG] > Running: /tmpfs/src/github/synthtool/env/bin/python3 -m synthtool --metadata synth.metadata synth.py --
2020-06-20 15:22:18,899 synthtool [DEBUG] > Executing /home/kbuilder/.cache/synthtool/java-iam/synth.py.
On branch autosynth-86
nothing to commit, working tree clean
2020-06-20 15:22:19,036 synthtool [DEBUG] > Ensuring dependencies.
2020-06-20 15:22:19,048 synthtool [DEBUG] > Cloning googleapis.
2020-06-20 15:22:19,661 synthtool [DEBUG] > Generating code for: //google/iam/v1:google-iam-v1-java.
2020-06-20 15:22:21,313 synthtool [ERROR] > Failed executing bazel --max_idle_secs=60 build //google/iam/v1:google-iam-v1-java:

Loading:
Loading: 0 packages loaded
Loading: 0 packages loaded
DEBUG: Rule 'com_google_api_codegen' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = "0633651c7e7cdbea16231025de8a8e55773c224ad840507a8f3b38f96461ad30"
DEBUG: Call stack for the definition of repository 'com_google_api_codegen' which is a http_archive (rule definition at /home/kbuilder/.cache/bazel/_bazel_kbuilder/a732f932c2cbeb7e37e1543f189a2a73/external/bazel_tools/tools/build_defs/repo/http.bzl:296:16):
 - <builtin>