test

tests/ui/ufcs/bad-builder.rs

@@ -0,0 +1,6 @@
+fn hello<Q>() -> Vec<Q> {
+    Vec::<Q>::mew()
+    //~^ ERROR no function or associated item named `mew` found for struct `Vec<Q>` in the current scope
+}
+
+fn main() {}

tests/ui/ufcs/bad-builder.stderr

@@ -0,0 +1,20 @@
+error[E0599]: no function or associated item named `mew` found for struct `Vec<Q>` in the current scope
+  --> $DIR/bad-builder.rs:2:15
+   |
+LL |     Vec::<Q>::mew()
+   |               ^^^
+   |               |
+   |               function or associated item not found in `Vec<Q>`
+   |               help: there is an associated function with a similar name: `new`
+   |
+note: if you're trying to build a new `Vec<Q>` consider using one of the following associated functions:
+      Vec::<T>::new
+      Vec::<T>::with_capacity
+      Vec::<T>::from_raw_parts
+      Vec::<T, A>::new_in
+      and 2 others
+  --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0599`.