NewtypeInstance4.out

Warning found:
in module [33mMain[0m
at tests/purs/warning/NewtypeInstance4.purs:23:1 - 23:86 (line 23, column 1 - line 23, column 86)

  The derived newtype instance for
  [33m                                [0m
  [33m  Main.MonadWriter w0           [0m
  [33m                   (MyWriter w0)[0m
  [33m                                [0m
  implies an superclass instance for [33mMain.MonadTell[0m which could not be verified.

in value declaration [33mmonadWriterMyWriter[0m

where [33mw0[0m is a rigid type variable
        bound at (line 0, column 0 - line 0, column 0)

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