for &target in targets {
let mut config = compiletest::default_config();
config.host_rustcflags = Some(sysroot_flag.clone());
- config.mode = mode.parse().ok().expect("Invalid mode");
+ config.mode = mode.parse().expect("Invalid mode");
config.run_lib_path = format!("{}/lib/rustlib/{}/lib", sysroot, target);
config.rustc_path = "target/debug/miri".into();
config.src_base = PathBuf::from(format!("tests/{}", mode));