Rollup merge of #84563 - jclulow:backtrace-upgrade, r=Mark-Simulacrum

Update backtrace to 0.3.57

Adds support for symbol resolution on illumos systems.
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Dylan DPC 2021-04-27 19:08:48 +02:00 committed by GitHub
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Subproject commit 710fc18ddcb6c7677b3c96359abb35da37f2a488
Subproject commit 221483ebaf45df5c956adffee2d4024e7c3b96b8