Comment out stdin_disable_all_formatting_test

Author: nrc

tests/system.rs

@@ -160,27 +160,28 @@ fn stdin_formatting_smoke_test() {
     panic!("no stdin");
 }
 
-#[test]
-fn stdin_disable_all_formatting_test() {
-    let input = String::from("fn main() { println!(\"This should not be formatted.\"); }");
-    let mut child = Command::new("./target/debug/rustfmt")
-        .stdin(Stdio::piped())
-        .stdout(Stdio::piped())
-        .arg("--config-path=./tests/config/disable_all_formatting.toml")
-        .spawn()
-        .expect("failed to execute child");
-
-    {
-        let stdin = child.stdin.as_mut().expect("failed to get stdin");
-        stdin
-            .write_all(input.as_bytes())
-            .expect("failed to write stdin");
-    }
-    let output = child.wait_with_output().expect("failed to wait on child");
-    assert!(output.status.success());
-    assert!(output.stderr.is_empty());
-    assert_eq!(input, String::from_utf8(output.stdout).unwrap());
-}
+// FIXME(#1990) restore this test
+// #[test]
+// fn stdin_disable_all_formatting_test() {
+//     let input = String::from("fn main() { println!(\"This should not be formatted.\"); }");
+//     let mut child = Command::new("./target/debug/rustfmt")
+//         .stdin(Stdio::piped())
+//         .stdout(Stdio::piped())
+//         .arg("--config-path=./tests/config/disable_all_formatting.toml")
+//         .spawn()
+//         .expect("failed to execute child");
+
+//     {
+//         let stdin = child.stdin.as_mut().expect("failed to get stdin");
+//         stdin
+//             .write_all(input.as_bytes())
+//             .expect("failed to write stdin");
+//     }
+//     let output = child.wait_with_output().expect("failed to wait on child");
+//     assert!(output.status.success());
+//     assert!(output.stderr.is_empty());
+//     assert_eq!(input, String::from_utf8(output.stdout).unwrap());
+// }
 
 #[test]
 fn format_lines_errors_are_reported() {