Warning found:
in module Main
at tests/purs/warning/CustomWarning2.purs:12:1 - 12:11 (line 12, column 1 - line 12, column 11)

  A custom warning occurred while solving type class constraints:

    foo


in value declaration baz

See https://github.com/purescript/documentation/blob/master/errors/UserDefinedWarning.md for more information,
or to contribute content related to this warning.