Fix some tests on wasm

tests/run-make/wasm-symbols-different-module/rmake.rs

@@ -21,7 +21,7 @@ fn test_file(file: &str, expected_imports: &[(&str, &[&str])]) {
 fn test(file: &str, args: &[&str], expected_imports: &[(&str, &[&str])]) {
     println!("test {file:?} {args:?} for {expected_imports:?}");
 
-    rustc().input(file).target("wasm32-wasip1").args(args).run();
+    rustc().input(file).target("wasm32-wasip1").args(args).arg("-Zub-checks=no").run();
 
     let file = std::fs::read(&tmp_dir().join(file).with_extension("wasm")).unwrap();
 
@@ -45,5 +45,5 @@ fn test(file: &str, args: &[&str], expected_imports: &[(&str, &[&str])]) {
             assert!(names.contains(name));
         }
     }
-    assert!(imports.is_empty());
+    assert!(imports.is_empty(), "unexpected imports: {:?}", imports);
 }

tests/ui/numbers-arithmetic/saturating-float-casts-wasm.rs

@@ -1,6 +1,6 @@
 //@ run-pass
 //@ only-wasm32
-//@ compile-flags: -Zmir-opt-level=0 -C target-feature=+nontrapping-fptoint
+//@ compile-flags: -Zmir-opt-level=0 -Zub-checks=no -C target-feature=+nontrapping-fptoint
 
 #![feature(test, stmt_expr_attributes)]
 #![deny(overflowing_literals)]

tests/ui/numbers-arithmetic/saturating-float-casts.rs

@@ -1,5 +1,5 @@
 //@ run-pass
-//@ compile-flags:-Zmir-opt-level=0
+//@ compile-flags: -Zmir-opt-level=0 -Zub-checks=no
 
 #![feature(test, stmt_expr_attributes)]
 #![deny(overflowing_literals)]