[nll] enable feature(nll) on various crates for bootstrap

src/liballoc/lib.rs

@@ -76,6 +76,7 @@
 
 #![cfg_attr(not(test), feature(fn_traits))]
 #![cfg_attr(not(test), feature(generator_trait))]
+#![cfg_attr(not(stage0), feature(nll))]
 #![cfg_attr(test, feature(test))]
 
 #![feature(allocator_api)]

src/liballoc_jemalloc/lib.rs

@@ -16,6 +16,7 @@
 #![feature(core_intrinsics)]
 #![feature(libc)]
 #![feature(linkage)]
+#![cfg_attr(not(stage0), feature(nll))]
 #![feature(staged_api)]
 #![feature(rustc_attrs)]
 #![cfg_attr(dummy_jemalloc, allow(dead_code, unused_extern_crates))]

src/liballoc_system/lib.rs

@@ -14,8 +14,10 @@
             reason = "this library is unlikely to be stabilized in its current \
                       form or name",
             issue = "32838")]
+
 #![feature(allocator_api)]
 #![feature(core_intrinsics)]
+#![cfg_attr(not(stage0), feature(nll))]
 #![feature(staged_api)]
 #![feature(rustc_attrs)]
 #![cfg_attr(any(unix, target_os = "cloudabi", target_os = "redox"), feature(libc))]

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::*;

src/librustc_borrowck/lib.rs

@@ -14,6 +14,7 @@
 
 #![allow(non_camel_case_types)]
 
+#![cfg_attr(not(stage0), feature(nll))]
 #![feature(quote)]
 
 #![recursion_limit="256"]

src/librustc_lint/lib.rs

@@ -27,6 +27,7 @@
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(macro_vis_matcher)]
+#![cfg_attr(not(stage0), feature(nll))]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(macro_at_most_once_rep)]

src/librustc_metadata/lib.rs

@@ -15,6 +15,7 @@
 #![feature(box_patterns)]
 #![feature(libc)]
 #![feature(macro_at_most_once_rep)]
+#![cfg_attr(not(stage0), feature(nll))]
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_quote)]
 #![feature(quote)]