[usability] fix bugs in the warning message

[scv119]

Fix two issues user reports:

1. we missed an argument for color_for

TypeError: color_for() missing 1 required positional argument: 'line'

2. seeming to miss info in the prefixing dict sometimes, causing data["..."] to crash.

[ericl]

Hmm any idea where the missing pid is coming from?

[scv119]

:( not sure

…

On Sat, Sep 25, 2021 at 2:26 PM Eric Liang ***@***.***> wrote: ***@***.**** approved this pull request. Hmm any idea where the missing pid is coming from? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#18898 (review)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAGMMPF6F755JCVTS3ORFBDUDY5BFANCNFSM5EX67KCA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.