For example: https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20Production%20Engine%20Drone/293032/overview

The timeout seems to be consistently on the file src/flutter/impeller/entity/entity_pass.cc.

The timeout is fixed by rolling clang forward, but rolling clang forward is blocked on https://reviews.llvm.org/D150397#4566267.