Avoid ICE in borrowck #134627
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Avoid ICE in borrowck #134627
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Provide a fallback in `best_blame_constraint` when `find_constraint_paths_between_regions` doesn't have a result. This code is due a rework to avoid the letf-over `unwrap()`, but avoids the ICE caused by the repro. Fix rust-lang#133252.
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Provide a fallback in
best_blame_constraintwhenfind_constraint_paths_between_regionsdoesn't have a result. This code is due a rework to avoid the letf-overunwrap(), but avoids the ICE caused by the repro.Fix #133252.