Assertion failure inside rr causing test x86_64-linux-gnuassertrr to fail

[d-netto]

I'm not sure if there is much action to be done on the Julia side, since this error seems to be coming from rr itself.

Still, this seems to be a cause of flakiness in test x86_64-linux-gnuassertrr.

See examples of the Assertion data > hole failed to hold below:

• https://buildkite.com/julialang/julia-master/builds/38179#0190b731-4bf0-4254-aad6-27876dde5d99
• https://buildkite.com/julialang/julia-master/builds/38130#0190a95c-0dee-4525-9115-154c4ae071f5

[DilumAluthge]

@Keno Is this an rr bug or a Julia bug?

[Keno]

We don't know. rr-debugger/rr#3717. It'd be useful to try to find out which file it's complaining about to see if we think it might be being written concurrently.