Doctest macro causing compilation error when used with only: [:moduledoc]

[joaopsramos]

Elixir and Erlang/OTP versions

Erlang/OTP 25 [erts-13.0.4] [source] [64-bit] [smp:12:12] [ds:12:12:10] [async-threads:1] [jit:ns]

Elixir 1.14.0 (compiled with Erlang/OTP 25)

Operating system

Ubuntu 20.04 LTS

Current behavior

I am trying to update from Elixir 1.13.1/Erlang 24.3.3 to the 1.14.0/25.0.4 versions, but the macro doctest are causing a compilation error when :moduledoc is used with :only as shown below:

  doctest MyModule, only: [:moduledoc, remove_html_entities: 1]

== Compilation error in file test/core/client_test.exs ==
** (FunctionClauseError) no function clause matching in anonymous fn/1 in ExUnit.DocTest.filter_tests/4    
    
    The following arguments were given to anonymous fn/1 in ExUnit.DocTest.filter_tests/4:
    
        # 1
        :moduledoc
    
    (ex_unit 1.14.0) lib/ex_unit/doc_test.ex:275: anonymous fn/1 in ExUnit.DocTest.filter_tests/4
    (elixir 1.14.0) lib/enum.ex:1755: anonymous fn/2 in Enum.map_join/3
    (elixir 1.14.0) lib/enum.ex:4289: Enum.map_intersperse_list/3
    (elixir 1.14.0) lib/enum.ex:1755: Enum.map_join/3
    (ex_unit 1.14.0) lib/ex_unit/doc_test.ex:275: ExUnit.DocTest.filter_tests/4
    (ex_unit 1.14.0) lib/ex_unit/doc_test.ex:236: ExUnit.DocTest.__doctests__/2
    test/core/client_test.exs:5: (module)
    (elixir 1.14.0) lib/kernel/parallel_compiler.ex:455: Kernel.ParallelCompiler.require_file/2
    (elixir 1.14.0) lib/kernel/parallel_compiler.ex:348: anonymous fn/5 in Kernel.ParallelCompiler.spawn_workers/7

Expected behavior

With the old versions this doesn't happen