add a test for ice-3717.rs

rust-lang/rust-clippy#13099

Author: kyoto7250

tests/ui/crashes/ice-3717.fixed

@@ -0,0 +1,11 @@
+#![deny(clippy::implicit_hasher)]
+
+use std::collections::HashSet;
+
+fn main() {}
+
+pub fn ice_3717<S: ::std::hash::BuildHasher + Default>(_: &HashSet<usize, S>) {
+    //~^ ERROR: parameter of type `HashSet` should be generalized over different hashers
+    let _ = [0u8; 0];
+    let _: HashSet<usize> = HashSet::default();
+}

tests/ui/crashes/ice-3717.rs

@@ -1,7 +1,5 @@
 #![deny(clippy::implicit_hasher)]
 
-//@no-rustfix: need to change the suggestion to a multipart suggestion
-
 use std::collections::HashSet;
 
 fn main() {}

tests/ui/crashes/ice-3717.stderr

@@ -1,5 +1,5 @@
 error: parameter of type `HashSet` should be generalized over different hashers
-  --> tests/ui/crashes/ice-3717.rs:9:21
+  --> tests/ui/crashes/ice-3717.rs:7:21
    |
 LL | pub fn ice_3717(_: &HashSet<usize>) {
    |                     ^^^^^^^^^^^^^^