diff --git a/src/cargo/core/compiler/output_depinfo.rs b/src/cargo/core/compiler/output_depinfo.rs
index 01136017dec..66596bb1880 100644
--- a/src/cargo/core/compiler/output_depinfo.rs
+++ b/src/cargo/core/compiler/output_depinfo.rs
@@ -84,7 +84,7 @@ fn add_deps_for_unit(
                 // The paths we have saved from the unit are of arbitrary relativeness and may be
                 // relative to the crate root of the dependency.
                 let path = unit.pkg.root().join(path);
-                deps.insert(path.into());
+                deps.insert(path);
             }
         }
     }