diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs
index 26c5c2bf411b9..5cc451c4394ca 100644
--- a/src/bootstrap/src/core/build_steps/compile.rs
+++ b/src/bootstrap/src/core/build_steps/compile.rs
@@ -992,6 +992,7 @@ impl Step for Rustc {
     }
 
     fn make_run(run: RunConfig<'_>) {
+        // dummy change
         let crates = run.cargo_crates_in_set();
         run.builder.ensure(Rustc {
             compiler: run
diff --git a/src/bootstrap/src/core/config/config.rs b/src/bootstrap/src/core/config/config.rs
index ac24da9f86b25..1b655305e7f5e 100644
--- a/src/bootstrap/src/core/config/config.rs
+++ b/src/bootstrap/src/core/config/config.rs
@@ -48,6 +48,7 @@ pub(crate) const RUSTC_IF_UNCHANGED_ALLOWED_PATHS: &[&str] = &[
     ":!src/rustdoc-json-types",
     ":!tests",
     ":!triagebot.toml",
+    ":!src/bootstrap", // lol, lmao
 ];
 
 macro_rules! check_ci_llvm {
diff --git a/tests/ui/instrument-coverage/bad-value.rs b/tests/ui/instrument-coverage/bad-value.rs
index 3441738529162..1887851f4b7b2 100644
--- a/tests/ui/instrument-coverage/bad-value.rs
+++ b/tests/ui/instrument-coverage/bad-value.rs
@@ -1,5 +1,5 @@
 //@ revisions: blank bad
-//@ [blank] compile-flags: -Cinstrument-coverage=
+//@ [blank] compile-flags: -Cinstrument-coverage=_
 //@ [bad] compile-flags: -Cinstrument-coverage=bad-value
 
 fn main() {}