Random timeouts in ParallelCompiler

[up2jj]

Elixir and Erlang/OTP versions

Erlang/OTP 25 [erts-13.1.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit]

Elixir 1.14.3 (compiled with Erlang/OTP 25)

Operating system

MacOS 12.6.2

Current behavior

Hi team,

Several people in my company have noticed timeouts when starting Phoenix server. It occurs from time to time during compilation phase. Everything was ok on 1.13.x branch with the same code base.

iex -S mix phx.server
Erlang/OTP 25 [erts-13.1.4] [source] [64-bit] [smp:10:10] [ds:10:10:10] [async-threads:1] [jit]

Compiling 54 files (.ex)
** (exit) exited in: :gen_server.call(#PID<0.863.0>, :start)
    ** (EXIT) time out
    (stdlib 4.2) gen_server.erl:370: :gen_server.call/2
    (elixir 1.14.3) lib/kernel/parallel_compiler.ex:262: Kernel.ParallelCompiler.verify_modules/4
    (elixir 1.14.3) lib/kernel/parallel_compiler.ex:204: Kernel.ParallelCompiler.spawn_workers/5
    (elixir 1.14.3) lib/kernel/parallel_compiler.ex:177: Kernel.ParallelCompiler.spawn_workers/3
    (mix 1.14.3) lib/mix/compilers/elixir.ex:158: Mix.Compilers.Elixir.compile/7
    (mix 1.14.3) lib/mix/state.ex:15: Mix.State.lock/2
    (mix 1.14.3) lib/mix/task.ex:421: anonymous fn/3 in Mix.Task.run_task/4

It might be caused by the change introduced in 156f88f where cast has been replaced with call without timeout specified.

Expected behavior

Code is compiled