Garbled string content when using List destructuring

[imclerran]

When using list destructuring in conjunction with Stdout, the string which is printed to Stdout is corrupted.

Important points of note:

• a dbg statement prior to the destructing block shows that the string in the record is intact
• So far have only been able to reproduce on records produced by decoding json from Http requests
  • decoding json from the filesystem does NOT produce the bug
• It appears that a record with a single field does not produce the error
• Inserting a dbg statement inside causes the Str to remain intact
• Using List.last instead of destructuring causes the Str to remain intact

Reproduction code here

[imclerran]

Zulip discussion: https://roc.zulipchat.com/#narrow/channel/231634-beginners/topic/String.20garbled.20in.20Stdout.20when.20used.20with.20list.20destructuring.2E