Clean PID-specific exception file if empty on process exit (#15086)
Clean PID-specific exception file if empty on process exit (#15086)


pantsbuild/pants,pantsbuild/pants,benjyw/pants,benjyw/pants,benjyw/pants,benjyw/pants,pantsbuild/pants,benjyw/pants,benjyw/pants,benjyw/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants