3 flaky tests

[gretchenfrage]

I ran cargo test on Quinn (05f6e67) 1,003,080 times. This is what I found.

There are 3 flaky tests:

• tests::single_ack_eliciting_packet_triggers_ack_after_delay fails 0.101% of the time. I collected 1021 occurrences.

  The flakyness of this test was also noted in Flaky test: single_ack_eliciting_packet_triggers_ack_after_delay #2014.

  In one arbitrarily chosen failure, the error was this:

  thread 'tests::single_ack_eliciting_packet_triggers_ack_after_delay' panicked at quinn-proto/src/tests/mod.rs:2490:5:
  assertion `left == right` failed
    left: Instant { tv_sec: 137912, tv_nsec: 296566897 }
   right: Instant { tv_sec: 137912, tv_nsec: 218566897 }
  

• tests::key_update_reordered fails 0.098% of the time. I collected 983 occurrences.

  The flakyness of this test was also noted in key_update_reordered is flaky #1695.

  In one arbitrarily chosen failure, the error was this:

  thread 'tests::key_update_reordered' panicked at quinn-proto/src/tests/mod.rs:1064:5:
  assertion `left == right` failed
    left: 1
   right: 0
  

• tests::key_update_simple fails 0.015% of the time. I collected 146.

  This is the rarest of the bunch, and I wasn't able to find evidence that this has been noticed before.

  In one arbitrarily chosen failure, the error was this:

  thread 'tests::key_update_simple' panicked at quinn-proto/src/tests/mod.rs:1021:5:
  assertion failed: `None` does not match `Some(Event::Stream(StreamEvent::Readable { id })) if id == s`
  

I am attaching to this issue grouped.zip, which contains the stdout/stderr of all runs in which the tests failed, grouped by which test failed. These contain terminal color codes, so I recommend you read the files with cat.

[gretchenfrage]

https://github.com/gretchenfrage/quinn-scrutinizer