e.g. Plack::Middleware::Cleanup::Guard in https://metacpan.org/release/HDP/Plack-Middleware-Cleanup-0.002
Also t/TestData is explicitly listed as no_index in META.yml for Calendar::List, but is still listed - https://metacpan.org/release/Calendar-List
Not sure what the Meta spec says about that, but looking at https://metacpan.org/source/BARBIE/Calendar-List-0.22/META.yml#L35 it specifies both provides and no_index which doesn't make much sense. Especially since the provides block includes TestData.
I will fix @hdp 's original issue, though.
do not include no_indexed things in Provides, fixes #284