Make ty::Error implement all auto traits
#134798
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I updated the description to close the crash issue. @bors r+ rollup |
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I have no idea what's up with the crashes test I fixed--I really don't want to look into it since it has to do something with borrowck and multiple layers of opaques. I think the underlying idea of allowing error types to implement all auto traits is justified though.
Fixes #134796
Fixes #131050
r? lcnr