stop mentioning number of applicate implementations

Author: lcnr

compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs

@@ -2388,14 +2388,11 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
                             // If there is only one implementation of the trait, suggest using it.
                             // Otherwise, use a placeholder comment for the implementation.
                             let (message, impl_suggestion) = if non_blanket_impl_count == 1 {(
-                                "use the fully-qualified path to the only available implementation".to_string(),
+                                "use the fully-qualified path to the only available implementation",
                                 format!("<{} as ", self.tcx.type_of(impl_def_id).instantiate_identity())
-                            )} else {(
-                                format!(
-                                    "use a fully-qualified path to a specific available implementation ({} found)",
-                                    non_blanket_impl_count
-                                ),
-                                "</* self type */ as ".to_string()
+                            )} else {
+                                ("use a fully-qualified path to a specific available implementation",
+                                                                "</* self type */ as ".to_string()
                             )};
                             let mut suggestions = vec![(
                                 path.span.shrink_to_lo(),

tests/ui/error-codes/E0283.stderr

@@ -7,7 +7,7 @@ LL |     fn create() -> u32;
 LL |     let cont: u32 = Generator::create();
    |                     ^^^^^^^^^^^^^^^^^ cannot call associated function of trait
    |
-help: use a fully-qualified path to a specific available implementation (2 found)
+help: use a fully-qualified path to a specific available implementation
    |
 LL |     let cont: u32 = </* self type */ as Generator>::create();
    |                     +++++++++++++++++++          +

tests/ui/error-codes/E0790.stderr

@@ -63,7 +63,7 @@ LL |     fn my_fn();
 LL |     MyTrait2::my_fn();
    |     ^^^^^^^^^^^^^^^ cannot call associated function of trait
    |
-help: use a fully-qualified path to a specific available implementation (2 found)
+help: use a fully-qualified path to a specific available implementation
    |
 LL |     </* self type */ as MyTrait2>::my_fn();
    |     +++++++++++++++++++         +

tests/ui/inference/need_type_info/infer-var-for-self-param.stderr

@@ -4,7 +4,7 @@ error[E0790]: cannot call associated function on trait without specifying the co
 LL |     let _ = (Default::default(),);
    |              ^^^^^^^^^^^^^^^^ cannot call associated function of trait
    |
-help: use a fully-qualified path to a specific available implementation (271 found)
+help: use a fully-qualified path to a specific available implementation
    |
 LL |     let _ = (</* self type */ as Default>::default(),);
    |              +++++++++++++++++++        +