Firefox 60 ESR compilation fails intermittently with Rust 1.25
On one of my build machines I have seen intermittent Firefox compilation failures when building with Rust 1.25
17:37.81 thread '<unnamed>' panicked at 'failed to shut down worker thread', vendor/jobserver/src/lib.rs:650:17
It turns out Mozilla hit them as well (https://bugzilla.mozilla.org/show_bug.cgi?id=1445413) and put some duct tape over the problem. This landed in 1.26.
I think we should upgrade to this version which has the nice benefit that we could get rid of our patch for Linux as it is not needed anymore.