diff --git a/tests/run-make/prefer-dylib/rmake.rs b/tests/run-make/prefer-dylib/rmake.rs
index ad9fd8a15a2c0..5b2b064967386 100644
--- a/tests/run-make/prefer-dylib/rmake.rs
+++ b/tests/run-make/prefer-dylib/rmake.rs
@@ -2,7 +2,6 @@
 
 use run_make_support::{cwd, dynamic_lib_name, read_dir, run, run_fail, rustc};
 use std::fs::remove_file;
-use std::process::Command;
 
 fn main() {
     rustc().input("bar.rs").crate_type("dylib").crate_type("rlib").arg("-Cprefer-dynamic").run();
diff --git a/tests/run-make/prefer-rlib/rmake.rs b/tests/run-make/prefer-rlib/rmake.rs
index 1d336a0790322..96861a264e621 100644
--- a/tests/run-make/prefer-rlib/rmake.rs
+++ b/tests/run-make/prefer-rlib/rmake.rs
@@ -3,14 +3,13 @@
 
 //@ ignore-cross-compile
 
-use run_make_support::{dynamic_lib_name, path, run, rust_lib_name, rustc};
-use std::fs::remove_file;
+use run_make_support::{dynamic_lib_name, fs_wrapper, path, run, rust_lib_name, rustc};
 
 fn main() {
     rustc().input("bar.rs").crate_type("dylib").crate_type("rlib").run();
     assert!(path(rust_lib_name("bar")).exists());
     rustc().input("foo.rs").run();
-    remove_file(rust_lib_name("bar")).unwrap();
-    remove_file(dynamic_lib_name("bar")).unwrap();
+    fs_wrapper::remove_file(rust_lib_name("bar"));
+    fs_wrapper::remove_file(dynamic_lib_name("bar"));
     run("foo");
 }