From 90da89bdca15cd512d096b781b085e0563222da9 Mon Sep 17 00:00:00 2001
From: Arlo Siemsen <arsiem@microsoft.com>
Date: Mon, 10 Oct 2022 10:43:39 -0500
Subject: [PATCH] Fix deadlock when build scripts are waiting for input on
 stdin

---
 crates/cargo-util/src/process_builder.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crates/cargo-util/src/process_builder.rs b/crates/cargo-util/src/process_builder.rs
index 714cc595eff4..43ef5debb97e 100644
--- a/crates/cargo-util/src/process_builder.rs
+++ b/crates/cargo-util/src/process_builder.rs
@@ -355,6 +355,8 @@ impl ProcessBuilder {
             let (mut child, argfile) = spawn(cmd)?;
             let out = child.stdout.take().unwrap();
             let err = child.stderr.take().unwrap();
+            // close stdin to prevent deadlock
+            drop(child.stdin.take().unwrap());
             read2(out, err, &mut |is_out, data, eof| {
                 let pos = if is_out {
                     &mut stdout_pos