Upgrade to rustfmt 0.8.3.

cranelift/src/filetest/runone.rs

@@ -26,7 +26,8 @@ pub fn run(path: &Path) -> TestResult {
     }
 
     // Parse the test commands.
-    let mut tests = testfile.commands
+    let mut tests = testfile
+        .commands
         .iter()
         .map(new_subtest)
         .collect::<Result<Vec<_>>>()?;
@@ -116,7 +117,8 @@ fn run_one_test<'a>(tuple: (&'a SubTest, &'a Flags, Option<&'a TargetIsa>),
 
     // Should we run the verifier before this test?
     if !context.verified && test.needs_verifier() {
-        verify_function(&func, isa).map_err(|e| pretty_verifier_error(&func, e))?;
+        verify_function(&func, isa)
+            .map_err(|e| pretty_verifier_error(&func, e))?;
         context.verified = true;
     }