fix(forge): validate mutation compiler profile#15628
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stevencartavia
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# Conflicts: # crates/forge/src/cmd/test/mod.rs
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# Conflicts: # crates/forge/src/cmd/test/mod.rs
stevencartavia
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# Conflicts: # crates/forge/src/cmd/test/mod.rs
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Mutation testing now validates the unmutated project under the same compiler profile that will be used for mutants. This catches cases where
--mutation-via-iror--mutation-optimizer-runsmakes the baseline fail before any source mutation is applied, and reports a mutation-specific setup error instead of surfacing a raw compiler failure later in the run.The mutation runner now builds the selected sources with the mutation compiler overrides, runs an unmutated baseline against that output, and only then starts executing mutants. The mutation result cache and mutant execution also use that mutation-profile compile output, keeping setup and execution aligned.