docs/test: add UI test and long-form error docs for `E0377`#105935

Merged

bors merged 1 commit intorust-lang:masterfrom

Ezrashaw:add-test+docs-for-e0377

Dec 20, 2022

Commits on Dec 20, 2022

docs/test: add UI test and long-form error docs for `E0377`
Ezrashaw
committed