Colorizable produces warning under 2021.05 v

$ raku -v

Welcome to Rakudo(tm) v2021.05.
Implementing the Raku(tm) programming language v6.d.
Built on MoarVM version 2021.05.

$ zef install   Colorizable --force-install
===> Searching for: Colorizable
===> Testing: Colorizable:ver<0.1.1>:auth<gitlab:uzluisf>
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 160
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 160
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 160
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 154
[Colorizable] Applying '.contains' to a Map will look at its .Str representation.
[Colorizable] Did you mean 'Map{needle}:exists'?
[Colorizable]   in block  at /root/.zef/store/Colorizable-0.1.1.tar.gz/Colorizable-0.1.1/lib/Colorizable.rakumod (Colorizable) line 160
===> Testing [OK] for Colorizable:ver<0.1.1>:auth<gitlab:uzluisf>
===> Installing: Colorizable:ver<0.1.1>:auth<gitlab:uzluisf>