Auto merge of #82150 - RalfJung:miri, r=RalfJung

update Miri

This pulls in the recent cargo-miri fixes by `@hyd-dev.`
Cc `@rust-lang/miri` r? `@ghost`
Fixes https://github.com/rust-lang/rust/issues/82173
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bors
2021-02-16 16:22:56 +00:00