Rollup merge of #77991 - Aaron1011:bump-backtrace-again, r=Mark-Simulacrum

Bump backtrace-rs

This pulls in https://github.com/rust-lang/backtrace-rs/pull/376, which
fixes Miri support for `std::backtrace::Backtrace`.
This commit is contained in:
Yuki Okushi 2020-10-17 05:36:50 +09:00 committed by GitHub
commit b4282b37f1
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@ -1 +1 @@
Subproject commit 893fbb23688e98376e54c26b59432a2966a8cc96
Subproject commit a6dd47bd588c882e735675a1379d2b61719fa380