2026-03-03 21:10:56 INFO   Updating BUILDKITE_COMMIT to "c9301206595f2b1f2a74134103643bd0c1809574"
Traceback (most recent call last):
  File "bazelci.py", line 4756, in <module>
    sys.exit(main())
  File "bazelci.py", line 4673, in main
    configs = fetch_configs(args.http_config, args.file_config)
  File "bazelci.py", line 1040, in fetch_configs
    return load_config(http_url, file_config, bazel_version=bazel_version)
  File "bazelci.py", line 1107, in load_config
    expand_task_config(config)
  File "bazelci.py", line 1060, in expand_task_config
    attributes = get_matrix_attributes(config["tasks"][task])
  File "bazelci.py", line 938, in get_matrix_attributes
    res = match_matrix_attr_pattern(subvalue)
  File "bazelci.py", line 921, in match_matrix_attr_pattern
    return re.match(r"^\${{\s*(\w+)\s*}}$", s)
  File "/usr/lib/python3.6/re.py", line 172, in match
    return _compile(pattern, flags).match(string)
TypeError: expected string or bytes-like object