All OSS-Fuzz builds failing

[inferno-chromium]

https://oss-fuzz-build-logs.storage.googleapis.com/build_logs/re2/latest.txt

Compiling libFuzzer into /usr/lib/libfuzzer.a .../src/libfuzzer/FuzzerCrossOver.cpp:12:10: fatal error: 'cstring' file not found
#include
^~~~~~~~~
1 error generated.

[kcc]

the file did not change for a few months, I bet this is recent Mike's changes in the build scripts.

[mikea]

Unlucky LLVM revision. Triggered new build of base-images and builds are starting to succeed.