Timeout of push operation causes panic

[max-wittig]

• Latest git-mirror
• Source that causes it: https://gitlab.com/gitlab-org/gitlab.git

thread '<unnamed>' panicked at 'failed printing to stdout: Resource temporarily unavailable (os error 11)', library/std/src/io/stdio.rs:935:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
END(FAIL) 0/235 [2022-01-28 09:11:18.965363019 +00:00]: https://gitlab.com/gitlab-org/gitlab.git -> git@code.siemens.com:mirror/gitlab.git (Command "git" "push" "git@code.siemens.com:mirror/gitlab.git" "+refs/tags/*:refs/tags/*" "+refs/heads/*:refs/heads/*" failed with exit code: 1, Stderr: remote: GitLab: Push operation timed out        
remote: 
remote: Timing information for debugging purposes:        
remote: Running checks for ref: 0a68660b-mr-iid        
remote: Running checks for ref: 0a68660b-no-mr-iid        
remote: Running checks for ref: 0a68660b-no-mr-line        
remote: Running checks for ref: 10-0-stable-ee        
remote: Running checks for ref: 10-0-stable-ee-with-ce-2017-09-18        
remote: Running checks for ref: 10-1-stable-ee        
remote: Running checks for ref: 10-2-stable-ee        
remote: Running checks for ref: 10-2-stable-ee-with-ce-2017-11-30        
remote: Running checks for ref: 10-3-stable-ee        
remote: Running checks for ref: 10-3-stable-ee-with-ce-2017-12-08        
remote: Running checks for ref: 10-4-stable-ee        
remote: Running checks for ref: 10-5-stable-ee        
remote: Running checks for ref: 10-5-stable-ee-with-ce-2018-02-09  

[bachp]

Thanks for reporting.

Looking at the error I don't think the panic was caused by the timeout.
The issue seems to be with stdout. os error 11 indicates that stdout returned EAGAIN, which indicates that it is set to non blocking mode.

Not sure how to further investigate this.

@max-wittig Does this happen frequently in your setup?

[max-wittig]

Happens everytime with gitlab

 ! f570cc92e305...d55104ec2f55 refs/pull/127364/merge -> refs/pull/127364/merge  (unable to update locathread '<unnamed>' panicked at 'failed printing to stdout: Resource temporarily unavailable (os error 11)', library/std/src/io/stdio.rs:935:9
stack backtrace:
   0: rust_begin_unwind
             at /rustc/53cb7b09b00cbea8754ffb78e7e3cb521cb8af4b/library/std/src/panicking.rs:493:5
   1: std::panicking::begin_panic_fmt
             at /rustc/53cb7b09b00cbea8754ffb78e7e3cb521cb8af4b/library/std/src/panicking.rs:435:5
   2: std::io::stdio::print_to
             at /rustc/53cb7b09b00cbea8754ffb78e7e3cb521cb8af4b/library/std/src/io/stdio.rs:935:9
   3: std::io::stdio::_print
             at /rustc/53cb7b09b00cbea8754ffb78e7e3cb521cb8af4b/library/std/src/io/stdio.rs:947:5
   4: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &F>::call_mut
   5: rayon::iter::plumbing::bridge_producer_consumer::helper
   6: rayon_core::join::join_context::{{closure}}
   7: rayon_core::registry::in_worker
   8: rayon::iter::plumbing::bridge_producer_consumer::helper
   9: rayon_core::join::join_context::{{closure}}
  10: rayon_core::registry::in_worker
  11: rayon::iter::plumbing::bridge_producer_consumer::helper
  12: rayon_core::join::join_context::{{closure}}
  13: rayon_core::registry::in_worker
  14: rayon::iter::plumbing::bridge_producer_consumer::helper
  15: rayon_core::join::join_context::{{closure}}
  16: rayon_core::registry::in_worker
  17: rayon::iter::plumbing::bridge_producer_consumer::helper
  18: <rayon_core::job::StackJob<L,F,R> as rayon_core::job::Job>::execute
  19: rayon_core::registry::WorkerThread::wait_until_cold
  20: rayon_core::join::join_context::{{closure}}
  21: rayon_core::registry::in_worker
  22: rayon::iter::plumbing::bridge_producer_consumer::helper
  23: <rayon_core::job::StackJob<L,F,R> as rayon_core::job::Job>::execute
  24: rayon_core::registry::WorkerThread::wait_until_cold
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

I can provide a RUST_BACKTRACE=full soon, if needed.

[bufferoverflow]

I've not seen this anymore and suggest to close this issue.

[max-wittig]

@bufferoverflow Pretty sure this still happens. We "fixed it" by manually pushing Gitlab, but I guess we can close it for the time being.