Weeder crashes

[pjljvandelaar]

Dear Developers,

When using Weeder

PS C:\TorXakis\TorXakis.RefactorAll> weeder --version
2.1.3

with

PS C:\TorXakis\TorXakis.RefactorAll>  more .\weeder.dhall
{ roots = [ "^Main.main$" ], type-class-roots = True }

on the project at https://github.com/TorXakis/TorXakis/tree/refactor/All
which was build using stack using the resolver and ghc-options

resolver: lts-18.4
ghc-options:
  "$locals": -fwrite-ide-info

I get

PS C:\TorXakis\TorXakis.RefactorAll> weeder
.stack-work\dist\274b403a\build\TorXakis\Regex\RegexFromXsdAlex.hs:78:1: error: alexGetByte is unused

      76 weeder.exe: <stdout>: commitBuffer: invalid argument (invalid character)

I don't know whether the issue is in the generated Alex file.
But the source is available at: https://github.com/TorXakis/TorXakis/blob/refactor/All/sys/txs-regex/src/TorXakis/Regex/RegexFromXsdAlex.x