message: tools: exclude Bazel .cache from check_format.py.
diff: @@ -9,7 +9,7 @@ import subprocess
  import sys
  EXCLUDED_PREFIXES = ("./generated/", "./thirdparty/", "./build", "./.git/",
  - "./bazel-", "./bazel/external")
  + "./bazel-", "./bazel/external", "./.cache")
  SUFFIXES = (".cc", ".h", "BUILD", ".md", ".rst")
  DOCS_SUFFIX = (".md", ".rst")
  