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-rw-r--r--src/bootstrap/build/compile.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/bootstrap/build/compile.rs b/src/bootstrap/build/compile.rs
index 7a582d853d8..fbdf49fb3d7 100644
--- a/src/bootstrap/build/compile.rs
+++ b/src/bootstrap/build/compile.rs
@@ -179,7 +179,6 @@ pub fn rustc<'a>(build: &'a Build, target: &str, compiler: &Compiler<'a>) {
          .env("CFG_VERSION", &build.version)
          .env("CFG_BOOTSTRAP_KEY", &build.bootstrap_key)
          .env("CFG_PREFIX", build.config.prefix.clone().unwrap_or(String::new()))
-         .env("RUSTC_BOOTSTRAP_KEY", &build.bootstrap_key)
          .env("CFG_LIBDIR_RELATIVE", "lib");
 
     if let Some(ref ver_date) = build.ver_date {