1 files changed, 12 insertions, 30 deletions

diff --git a/third_party/rust/wast/tests/parse-fail.rs b/third_party/rust/wast/tests/parse-fail.rs
index 3ae1817a4a..a8d4f34456 100644
--- a/third_party/rust/wast/tests/parse-fail.rs
+++ b/third_party/rust/wast/tests/parse-fail.rs
@@ -4,46 +4,28 @@
 //! Use `BLESS=1` in the environment to auto-update `*.err` files. Be sure to
 //! look at the diff!
 
-use rayon::prelude::*;
+use libtest_mimic::{Arguments, Trial};
 use std::env;
 use std::path::{Path, PathBuf};
 
 fn main() {
     let mut tests = Vec::new();
     find_tests("tests/parse-fail".as_ref(), &mut tests);
-    let filter = std::env::args().nth(1);
-
     let bless = env::var("BLESS").is_ok();
-    let tests = tests
-        .iter()
-        .filter(|test| {
-            if let Some(filter) = &filter {
-                if let Some(s) = test.file_name().and_then(|s| s.to_str()) {
-                    if !s.contains(filter) {
-                        return false;
-                    }
-                }
-            }
-            true
-        })
-        .collect::<Vec<_>>();
-
-    println!("running {} tests\n", tests.len());
-
-    let errors = tests
-        .par_iter()
-        .filter_map(|test| run_test(test, bless).err())
-        .collect::<Vec<_>>();
 
-    if !errors.is_empty() {
-        for msg in errors.iter() {
-            eprintln!("{}", msg);
-        }
-
-        panic!("{} tests failed", errors.len())
+    let mut trials = Vec::new();
+    for test in tests {
+        let trial = Trial::test(format!("{test:?}"), move || {
+            run_test(&test, bless).map_err(|e| format!("{e:?}").into())
+        });
+        trials.push(trial);
     }
 
-    println!("test result: ok. {} passed\n", tests.len());
+    let mut args = Arguments::from_args();
+    if cfg!(target_family = "wasm") && !cfg!(target_feature = "atomics") {
+        args.test_threads = Some(1);
+    }
+    libtest_mimic::run(&args, trials).exit();
 }
 
 fn run_test(test: &Path, bless: bool) -> anyhow::Result<()> {