missing imports

Author: Oneirical

src/tools/run-make-support/src/run.rs

@@ -1,8 +1,9 @@
 use std::env;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Output};
-use std::io::{self, BufReader, Write};
+use std::io::{self, BufReader, Read, Write};
 use std::fs::File;
+use std::ffi::OsStr;
 
 use crate::is_windows;
 
@@ -43,7 +44,7 @@ fn run_common(name: &str) -> (Command, Output) {
 /// referring to a different file.
 pub fn stdin_command<P>(command: &str, stdin: P, argument: P)
     where
-    P: AsRef<Path> + AsRef<OsStr>,
+    P: AsRef<Path> + AsRef<OsStr> + std::convert::AsRef<std::ffi::OsStr>,
 {
     let file = File::open(stdin).unwrap();
     let reader = BufReader::new(file);