diff --git a/src/librustc_builtin_macros/format.rs b/src/librustc_builtin_macros/format.rs
index e574b076bf8..e3ac4efe1a0 100644
--- a/src/librustc_builtin_macros/format.rs
+++ b/src/librustc_builtin_macros/format.rs
@@ -277,6 +277,8 @@ impl<'a, 'b> Context<'a, 'b> {
                                 ("x", "LowerHex"),
                                 ("X", "UpperHex"),
                             ] {
+                                // FIXME: rustfix (`run-rustfix`) fails to apply suggestions.
+                                // > "Cannot replace slice of data that was already replaced"
                                 err.tool_only_span_suggestion(
                                     sp,
                                     &format!("use the `{}` trait", name),
diff --git a/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.fixed b/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.fixed
new file mode 100644
index 00000000000..95019b27869
--- /dev/null
+++ b/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.fixed
@@ -0,0 +1,14 @@
+// run-rustfix
+
+// In this regression test for #67146, we check that the
+// negative outlives bound `!'a` is rejected by the parser.
+// This regression was first introduced in PR #57364.
+
+fn main() {}
+
+pub fn f1<T>() {}
+//~^ ERROR negative bounds are not supported
+pub fn f2<'a, T: Ord>() {}
+//~^ ERROR negative bounds are not supported
+pub fn f3<'a, T: Ord>() {}
+//~^ ERROR negative bounds are not supported
diff --git a/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.rs b/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.rs
index 5a109ba7c68..82f54f8faa9 100644
--- a/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.rs
+++ b/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.rs
@@ -1,12 +1,14 @@
+// run-rustfix
+
 // In this regression test for #67146, we check that the
 // negative outlives bound `!'a` is rejected by the parser.
 // This regression was first introduced in PR #57364.
 
 fn main() {}
 
-fn f1<T: !'static>() {}
+pub fn f1<T: !'static>() {}
 //~^ ERROR negative bounds are not supported
-fn f2<'a, T: Ord + !'a>() {}
+pub fn f2<'a, T: Ord + !'a>() {}
 //~^ ERROR negative bounds are not supported
-fn f3<'a, T: !'a + Ord>() {}
+pub fn f3<'a, T: !'a + Ord>() {}
 //~^ ERROR negative bounds are not supported
diff --git a/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.stderr b/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.stderr
index 4dc06347304..a4a422948ac 100644
--- a/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.stderr
+++ b/src/test/ui/parser/issue-67146-negative-outlives-bound-syntactic-fail.stderr
@@ -1,20 +1,20 @@
 error: negative bounds are not supported
-  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:7:8
+  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:9:12
    |
-LL | fn f1<T: !'static>() {}
-   |        ^^^^^^^^^^ negative bounds are not supported
+LL | pub fn f1<T: !'static>() {}
+   |            ^^^^^^^^^^ negative bounds are not supported
 
 error: negative bounds are not supported
-  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:9:18
+  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:11:22
    |
-LL | fn f2<'a, T: Ord + !'a>() {}
-   |                  ^^^^^ negative bounds are not supported
+LL | pub fn f2<'a, T: Ord + !'a>() {}
+   |                      ^^^^^ negative bounds are not supported
 
 error: negative bounds are not supported
-  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:11:12
+  --> $DIR/issue-67146-negative-outlives-bound-syntactic-fail.rs:13:16
    |
-LL | fn f3<'a, T: !'a + Ord>() {}
-   |            ^^^^^ negative bounds are not supported
+LL | pub fn f3<'a, T: !'a + Ord>() {}
+   |                ^^^^^ negative bounds are not supported
 
 error: aborting due to 3 previous errors
 
diff --git a/src/test/ui/resolve/resolve-conflict-import-vs-import.fixed b/src/test/ui/resolve/resolve-conflict-import-vs-import.fixed
new file mode 100644
index 00000000000..e429513b51d
--- /dev/null
+++ b/src/test/ui/resolve/resolve-conflict-import-vs-import.fixed
@@ -0,0 +1,9 @@
+// run-rustfix
+
+#[allow(unused_imports)]
+use std::mem::transmute;
+
+//~^ ERROR the name `transmute` is defined multiple times
+
+fn main() {
+}
diff --git a/src/test/ui/resolve/resolve-conflict-import-vs-import.rs b/src/test/ui/resolve/resolve-conflict-import-vs-import.rs
index 322f000040e..43853117af6 100644
--- a/src/test/ui/resolve/resolve-conflict-import-vs-import.rs
+++ b/src/test/ui/resolve/resolve-conflict-import-vs-import.rs
@@ -1,3 +1,6 @@
+// run-rustfix
+
+#[allow(unused_imports)]
 use std::mem::transmute;
 use std::mem::transmute;
 //~^ ERROR the name `transmute` is defined multiple times
diff --git a/src/test/ui/resolve/resolve-conflict-import-vs-import.stderr b/src/test/ui/resolve/resolve-conflict-import-vs-import.stderr
index 8df68ad3229..632be50f4c4 100644
--- a/src/test/ui/resolve/resolve-conflict-import-vs-import.stderr
+++ b/src/test/ui/resolve/resolve-conflict-import-vs-import.stderr
@@ -1,5 +1,5 @@
 error[E0252]: the name `transmute` is defined multiple times
-  --> $DIR/resolve-conflict-import-vs-import.rs:2:5
+  --> $DIR/resolve-conflict-import-vs-import.rs:5:5
    |
 LL | use std::mem::transmute;
    |     ------------------- previous import of the value `transmute` here