compiletest: unset RUSTC_LOG_COLOR
#123672
Merged
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If this leaks in from the environment then it can make tests fail when they deliberately trigger
WARN
orERROR
logging, currently this makes these tests fail if you setRUSTC_LOG_COLOR=always
in the parent environment:tests/ui/coherence/occurs-check/associated-type.rs#next
tests/ui/coherence/occurs-check/associated-type.rs#old
tests/ui/higher-ranked/structually-relate-aliases.rs
tests/ui/self/arbitrary-self-from-method-substs.rs#default
tests/ui/traits/next-solver/issue-118950-root-region.rs