Regressions on master at commit r16-5848 vs commit r16-5846 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r16-5848 vs commit r16-5846 on Linux/x86_64
New failures:

New passes:
FAIL: compiler driver --help=warnings option(s): "^ +-.*[^:.]$" absent from output: "  -Wapply-commit              Warn if APPLY COMMIT is used "
FAIL: compiler driver --help=warnings option(s): "^ +-.*[^:.]$" absent from output: "  -Wapply-commit              Warn if APPLY COMMIT is used "