Building Elixir from master fails

[enilsen16]

ref: https://github.com/asdf-vm/asdf-elixir/issues/36

Precheck

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Environment

• Elixir & Erlang versions (elixir --version):

  Elixir: master
  Erlang: otp 20.1.1

• Operating system: MacOS 10.13

  1) test compile gets correct line number for UndefinedFunctionError (Kernel.ParallelCompilerTest)
     test/elixir/kernel/parallel_compiler_test.exs:119
     ** (File.Error) could not write to file "/Users/erik/Projects/elixir/lib/elixir/tmp/undef_error.ex": no such file or directory
     code: File.write!(file, """
     stacktrace:
       (elixir) lib/file.ex:830: File.write!/3
       test/elixir/kernel/parallel_compiler_test.exs:121: (test)
.......
  2) test compile does not use incorrect line number when error originates in another file (Kernel.ParallelCompilerTest)
     test/elixir/kernel/parallel_compiler_test.exs:94
     ** (File.Error) could not write to file "/Users/erik/Projects/elixir/lib/elixir/tmp/error_line_a.ex": no such file or directory
     code: File.write!(file_a, """
     stacktrace:
       (elixir) lib/file.ex:830: File.write!/3
       test/elixir/kernel/parallel_compiler_test.exs:96: (test)

[josevalim]

The build on travis is green: https://travis-ci.org/elixir-lang/elixir

Can you please check try it on Erlang 20.0 and let us know if it is related to the Erlang version by any chance?

[gmile]

I've noticed this locally too, I'm on:

erl -version
Erlang (SMP,ASYNC_THREADS,HIPE) (BEAM) emulator version 9.1.1

Running make clean and then make compile again fixed the compilation for me.

[gmile]

I was able to compile successfully (wanted to run formatter code), but now if I run make test, I see the above test failures consistently.