Precompilation sometimes hangs

[nefrathenrici]

I need to create a reproducer for this. See example:

julia> import ClimaAtmos as CA
Precompiling ClimaAtmos...
  28 dependencies successfully precompiled in 59 seconds. 241 already precompiled.
  1 dependency had output during precompilation:
┌ ClimaDiagnostics
│  [pid 763327] waiting for IO to finish:
│   Handle type        uv_handle_t->data
│   fs_event           0x24878e0->0x7faa7c56aef0
│   timer              0x2218450->0x7faa7c56af20
│  This means that a package has started a background task or event source that has not finished running. For precompilation to complete successfully, the event source needs to be closed explicitly. See the developer documentation on fixing precompilation hangs for more help.
└