greppable6 failing

11:57 < [Coke]> greppable6: beer|camel
11:57 < greppable6> [Coke], and I oop! Backtrace: https://gist.github.com/25542aa030bb88bf583cf271699fdcbe

Unsupported source “�[35mcpan”
  in block  at [xbin/Greppable.p6](https://github.com/Raku/whateverable/blob/0daa02d45181a25a637d4e60d6b0a77edfe7796c/xbin/Greppable.p6#L62) line 62
  in block  at [xbin/Greppable.p6](https://github.com/Raku/whateverable/blob/0daa02d45181a25a637d4e60d6b0a77edfe7796c/xbin/Greppable.p6#L56) line 56
  in sub process-grep-line at [xbin/Greppable.p6](https://github.com/Raku/whateverable/blob/0daa02d45181a25a637d4e60d6b0a77edfe7796c/xbin/Greppable.p6#L55) line 55
  in block  at [xbin/Greppable.p6](https://github.com/Raku/whateverable/blob/0daa02d45181a25a637d4e60d6b0a77edfe7796c/xbin/Greppable.p6#L108) line 108
  in method irc-to-me at [xbin/Greppable.p6](https://github.com/Raku/whateverable/blob/0daa02d45181a25a637d4e60d6b0a77edfe7796c/xbin/Greppable.p6#L112) line 112
  in sub  at [/srv/lib/Whateverable.pm6](https://github.com/Raku/whateverable/blob/0daa02d45181a25a637d4e60d6b0a77edfe7796c//srv/lib/Whateverable.pm6#L52) (Whateverable) line 52
  in block  at /usr/share/perl6/site/sources/94EE5A6FF1AA6A880C458FEE1AFEA2BF7237FD25 (IRC::Client) line 652
  in method handle-event at /usr/share/perl6/site/sources/94EE5A6FF1AA6A880C458FEE1AFEA2BF7237FD25 (IRC::Client) line 584
  in block  at /usr/share/perl6/site/sources/94EE5A6FF1AA6A880C458FEE1AFEA2BF7237FD25 (IRC::Client) line 459
  in block  at /usr/share/perl6/site/sources/94EE5A6FF1AA6A880C458FEE1AFEA2BF7237FD25 (IRC::Client) line 456

Start in xbin/Greppable.p6 around lines 55–62, where the reported backtrace shows the failure while processing greppable6. Reproduce the greppable6: beer|camel command and inspect the linked gist to understand the unsupported source error. Done means the command processes this input without producing the reported backtrace.