Regressions on master at commit r16-5805 vs commit r16-5803 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r16-5805 vs commit r16-5803 on Linux/x86_64
New failures:
FAIL: 30_threads/async/async.cc  -std=gnu++17 execution test
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 "

New passes: