Switch ui tests to trybuild

test_suite/tests/compiletest.rs

@@ -1,21 +1,6 @@
-#![cfg(feature = "compiletest")]
-
-use compiletest_rs as compiletest;
-
+#[rustc::attr(not(nightly), ignore)]
 #[test]
 fn ui() {
-    compiletest::run_tests(&compiletest::Config {
-        mode: compiletest::common::Mode::Ui,
-        src_base: std::path::PathBuf::from("tests/ui"),
-        target_rustcflags: Some(String::from(
-            "\
-             --edition=2018 \
-             -L deps/target/debug/deps \
-             -Z unstable-options \
-             --extern serde_derive \
-             ",
-        )),
-        build_base: std::path::PathBuf::from("../target/ui"),
-        ..Default::default()
-    });
+    let t = trybuild::TestCases::new();
+    t.compile_fail("tests/ui/**/*.rs");
 }