libgraphviz: enable feature(nll) for bootstrap

diff --git a/src/libgraphviz/lib.rs b/src/libgraphviz/lib.rs
index 158d0101515860af76c7562e987267a7818a2102..a8eea18e46461984368a86788372d570d7140150 100644 (file)
--- a/src/libgraphviz/lib.rs
+++ b/src/libgraphviz/lib.rs
@@ -288,6 +288,7 @@
        html_root_url = "https://doc.rust-lang.org/nightly/",
        test(attr(allow(unused_variables), deny(warnings))))]
 
+#![cfg_attr(not(stage0), feature(nll))]
 #![feature(str_escape)]
 
 use self::LabelText::*;