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-rw-r--r--src/bootstrap/test.rs5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index 881bea5d97e..c552f607960 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -1016,7 +1016,10 @@ impl Step for Compiletest {
         // Also provide `rust_test_helpers` for the host.
         builder.ensure(native::TestHelpers { target: compiler.host });
 
-        builder.ensure(native::TestHelpers { target });
+        // wasm32 can't build the test helpers
+        if !target.contains("wasm32") {
+            builder.ensure(native::TestHelpers { target });
+        }
         builder.ensure(RemoteCopyLibs { compiler, target });
 
         let mut cmd = builder.tool_cmd(Tool::Compiletest);