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authorbors <bors@rust-lang.org>2021-03-15 18:32:10 +0000
committerbors <bors@rust-lang.org>2021-03-15 18:32:10 +0000
commit107896c32d5dda4db508968ff34997a39d286966 (patch)
treef034eb0377b6e3336ec1d0068a8577d8c04a67f8 /compiler/rustc_mir/src/transform/coverage/query.rs
parent2ccf06302c08d7d4911aad40e66a9a3ee731c6f9 (diff)
parente22143c075c7aee0a3a5bc90b51adff6cd250b34 (diff)
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Auto merge of #83121 - the8472:env-rwlock-2, r=joshtriplett
use RWlock when accessing os::env (take 2)

This reverts commit acdca316c3d42299d31c1b47eb792006ffdfc29c (#82877) i.e. redoes #81850 since the invalid unlock attempts in the child process have been fixed in #82949

r? `@joshtriplett`
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