meson test --repeat error

Describe the bug Using meson test --repeat=X consistently raises an exception in meson:

Exception in callback TestHarness._run_tests.<locals>.test_done(<Task finishe...fa86d3f5100>)>) at /usr/lib/python3.9/site-packages/mesonbuild/mtest.py:1807
handle: <Handle TestHarness._run_tests.<locals>.test_done(<Task finishe...fa86d3f5100>)>) at /usr/lib/python3.9/site-packages/mesonbuild/mtest.py:1807>
Traceback (most recent call last):
  File "/usr/lib/python3.9/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/usr/lib/python3.9/site-packages/mesonbuild/mtest.py", line 1809, in test_done
    f.result()
  File "/usr/lib/python3.9/site-packages/mesonbuild/mtest.py", line 1805, in run_test
    self.process_test_result(res)
  File "/usr/lib/python3.9/site-packages/mesonbuild/mtest.py", line 1558, in process_test_result
    l.log(self, result)
  File "/usr/lib/python3.9/site-packages/mesonbuild/mtest.py", line 657, in log
    self.running_tests.remove(result)
  File "/usr/lib/python3.9/_collections_abc.py", line 600, in remove
    raise KeyError(value)
KeyError: <mesonbuild.mtest.TestRunExitCode object at 0x7fa86d3f5100>

To Reproduce A meson.build as simple as:

project('simple', 'cpp')
test('test1', executable('test1', 'test.cpp'))

And test.cpp:

#include <iostream>

int main() {
  std::cerr << "this is a test" << std::endl;
  return 0;
}

Reproduces this behavior if you do: meson build, cd build, meson test --repeat=10.

system parameters OS: Arch Linux Python: 3.9.1 Meson: 0.57.1 Ninja: 1.10.2

This doesn’t seem to be happening on Arch Linux alone, as I was getting the same error on my CI builds which use Ubuntu and MacOS.

[eli-schwartz]

@schutzekatze See also #8379, this was unfortunately never noticed in the PyPI prerelease

[bonzini]

Ok, I will leave the functionality.