closure capture migrations do not note when move is now required #88114
Description
In a small crater run for the 2021 edition migrations, a few problems shows up with closures no longer compiling after migration:
- https://crater-reports.s3.amazonaws.com/pr-87190-2/try%23d8627d19850b63702b76089d7b055730e9ddca14/reg/finality-grandpa-0.14.3/log.txt
- https://crater-reports.s3.amazonaws.com/pr-87190-2/try%23d8627d19850b63702b76089d7b055730e9ddca14/reg/tantivy-0.15.3/log.txt
- https://crater-reports.s3.amazonaws.com/pr-87190-2/try%23d8627d19850b63702b76089d7b055730e9ddca14/reg/tetsy-finality-grandpa-0.13.0/log.txt