Jubilee 5352e17df3
Rollup merge of #89483 - hkmatsumoto:patch-diagnostics-2, r=estebank
Practice diagnostic message convention

Detected by #89455.

r? ```@estebank```
2021-10-04 13:58:15 -07:00
..
2021-09-20 22:21:42 -04:00