[nll] libfmt_macros: enable feature(nll) for bootstrap

Author: memoryruins

src/libfmt_macros/lib.rs

@@ -20,6 +20,8 @@
        html_playground_url = "https://play.rust-lang.org/",
        test(attr(deny(warnings))))]
 
+#![cfg_attr(not(stage0), feature(nll))]
+
 pub use self::Piece::*;
 pub use self::Position::*;
 pub use self::Alignment::*;