Define a dedicated error type for `HandleOrNull` and `HandleOrInvalid`.#96195

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rust-lang:masterfrom

sunfishcode:sunfishcode/handle-or-error-type

Apr 27, 2022

Commits on Apr 19, 2022

Commits on Apr 26, 2022

Add `only-windows` versions of the coerce-issue-49593-box-never test.
sunfishcode
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Fix the filename in the expected error message.
sunfishcode
committed