diff --git a/build_system/build_sysroot.rs b/build_system/build_sysroot.rs
index ed8b5b906d2..e41f6c5e709 100644
--- a/build_system/build_sysroot.rs
+++ b/build_system/build_sysroot.rs
@@ -312,7 +312,6 @@ fn build_rtstartup(dirs: &Dirs, compiler: &Compiler) -> Option<SysrootTarget> {
         let obj = RTSTARTUP_SYSROOT.to_path(dirs).join(format!("{file}.o"));
         let mut build_rtstartup_cmd = Command::new(&compiler.rustc);
         build_rtstartup_cmd
-            .arg("-Ainternal_features") // Missing #[allow(internal_features)]
             .arg("--target")
             .arg(&compiler.triple)
             .arg("--emit=obj")
diff --git a/build_system/tests.rs b/build_system/tests.rs
index 3a88824bf36..38c3786a94a 100644
--- a/build_system/tests.rs
+++ b/build_system/tests.rs
@@ -438,7 +438,7 @@ impl<'a> TestRunner<'a> {
         cmd.arg("-L");
         cmd.arg(format!("crate={}", BUILD_EXAMPLE_OUT_DIR.to_path(&self.dirs).display()));
         cmd.arg("--out-dir");
-        cmd.arg(format!("{}", BUILD_EXAMPLE_OUT_DIR.to_path(&self.dirs).display()));
+        cmd.arg(BUILD_EXAMPLE_OUT_DIR.to_path(&self.dirs));
         cmd.arg("-Cdebuginfo=2");
         cmd.arg("--target");
         cmd.arg(&self.target_compiler.triple);