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-rw-r--r--compiler/rustc_middle/src/mir/graphviz.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_middle/src/mir/graphviz.rs b/compiler/rustc_middle/src/mir/graphviz.rs
index 5de56dad0..cf6d46e1e 100644
--- a/compiler/rustc_middle/src/mir/graphviz.rs
+++ b/compiler/rustc_middle/src/mir/graphviz.rs
@@ -110,7 +110,7 @@ fn write_graph_label<'tcx, W: std::fmt::Write>(
let decl = &body.local_decls[local];
write!(w, "let ")?;
- if decl.mutability == Mutability::Mut {
+ if decl.mutability.is_mut() {
write!(w, "mut ")?;
}