unnecessary_mut_passed

Cargo.toml

@@ -181,7 +181,6 @@ non_canonical_partial_ord_impl = "allow"
 self_named_constructors = "allow"
 too_many_arguments = "allow"
 type_complexity = "allow"
-unnecessary_mut_passed = "allow"
 useless_conversion = "allow"
 useless_format = "allow"
 wildcard_in_or_patterns = "allow"

crates/hir-ty/src/mir/lower/pattern_matching.rs

@@ -114,7 +114,7 @@ fn pattern_match_inner(
                             index: i as u32,
                         }))
                     }),
-                    &mut cond_place,
+                    &cond_place,
                     mode,
                 )?
             }