OSX linker segfaulting on Travis

[alexcrichton]

I've seen this quite a lot recently

Example logs:

clang: error: unable to execute command: Segmentation fault: 11
clang: error: linker command failed due to signal (use -v to see invocation)

Example Travis runs:

• https://travis-ci.org/rust-lang/rust/jobs/188055227
• https://travis-ci.org/rust-lang/rust/jobs/187951287
• https://travis-ci.org/rust-lang/rust/jobs/189523779
• https://travis-ci.org/rust-lang/rust/jobs/189551548

I'm opening a tracking issue so we can collect some more logs and hopefully draw conclusions from them at some point. Until then I'm not really sure how we'd deal with this...

[Mark-Simulacrum]

Is there a way to collect the coredump from the segfault so we could attempt to track down the reason behind the segfault? Perhaps we could at least pass -v to clang so we could try to reproduce locally?

[alexcrichton]

@Mark-Simulacrum your guess is as good as mine!

[sfackler]

If you set ulimit -c unlimited, the core dump will end up in /cores.