fix: wrong trait import suggestion for T:

compiler/rustc_typeck/src/check/method/suggest.rs

@@ -1880,9 +1880,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
  };
  let sp = hir.span(id);
  let sp = if let Some(first_bound) = has_bounds {
- // `sp` only covers `T`, change it so that it covers
- // `T:` when appropriate
  sp.until(first_bound.span())
+ } else if let Some(colon_sp) =
+ // If the generic param is declared with a colon but without bounds:
+ // fn foo<T:>(t: T) { ... }
+ param.colon_span_for_suggestions(
+ self.inh.tcx.sess.source_map(),
+ )
+ {
+ sp.to(colon_sp)
  } else {
  sp
  };

src/test/ui/traits/issue-95898.rs

@@ -0,0 +1,9 @@
+// Test for #95898: The trait suggestion had an extra `:` after the trait.
+// edition:2021
+
+fn foo<T:>(t: T) {
+ t.clone();
+ //~^ ERROR no method named `clone` found for type parameter `T` in the current scope
+}
+
+fn main() {}

src/test/ui/traits/issue-95898.stderr

@@ -0,0 +1,15 @@
+error[E0599]: no method named `clone` found for type parameter `T` in the current scope
+ --> $DIR/issue-95898.rs:5:7
+ |
+LL | t.clone();
+ | ^^^^^ method not found in `T`
+ |
+ = help: items from traits can only be used if the type parameter is bounded by the trait
+help: the following trait defines an item `clone`, perhaps you need to restrict type parameter `T` with it:
+ |
+LL | fn foo<T: Clone>(t: T) {
+ | ~~~~~~~~
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0599`.