1When rust.channel is set to either beta or stable, we can't use 2nightly features on bootstrap without RUSTC_BOOTSTRAP. Set RUSTC_BOOTSTRAP=1 3to use nightly features on stable or beta. 4 5Upstream-Status: Backport [https://github.com/rust-lang/rust/pull/119619/commits/8aa7dd06f6e50621dc10f9f9490681be8a45876f] 6 7Signed-off-by: onur-ozkan <work@onurozkan.dev> 8Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com> 9--- 10diff --git a/src/bootstrap/synthetic_targets.rs b/ src/bootstrap/synthetic_targets.rs 11index d2c65b740da..45baf56f46b 100644 12--- a/src/bootstrap/src/core/build_steps/synthetic_targets.rs 13+++ b/src/bootstrap/src/core/build_steps/synthetic_targets.rs 14@@ -59,6 +59,7 @@ fn create_synthetic_target( 15 let mut cmd = Command::new(builder.rustc(compiler)); 16 cmd.arg("--target").arg(base.rustc_target_arg()); 17 cmd.args(["-Zunstable-options", "--print", "target-spec-json"]); 18+ cmd.env("RUSTC_BOOTSTRAP", "1"); 19 cmd.stdout(Stdio::piped()); 20 21 let output = cmd.spawn().unwrap().wait_with_output().unwrap(); 22