Add support for using qualified paths with structs in expression and pattern

position.

compiler/rustc_feature/src/active.rs

@@ -663,6 +663,9 @@ declare_features! (
     /// Allows unnamed fields of struct and union type
     (active, unnamed_fields, "1.53.0", Some(49804), None),
 
+    /// Allows qualified paths in struct expressions, struct patterns and tuple struct patterns.
+    (active, more_qualified_paths, "1.54.0", Some(80080), None),
+
     // -------------------------------------------------------------------------
     // feature-group-end: actual feature gates
     // -------------------------------------------------------------------------