From 59c31d319ae376dcb1c6757e99eb059c27c7d00b Mon Sep 17 00:00:00 2001
From: Oliver Schneider <git-spam-no-reply9815368754983@oli-obk.de>
Date: Wed, 17 Aug 2016 18:26:58 +0200
Subject: [PATCH] plugin mode still needs to work

---
 src/lib.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index cd91b85e59b..5a02b514812 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,7 @@
 #![feature(plugin_registrar)]
 #![feature(rustc_private)]
 #![allow(unknown_lints)]
+#![feature(borrow_state)]
 
 extern crate rustc_plugin;
 use rustc_plugin::Registry;
@@ -12,7 +13,7 @@ pub use clippy_lints::*;
 
 #[plugin_registrar]
 pub fn plugin_registrar(reg: &mut Registry) {
-    if reg.sess.lint_store.borrow().get_lint_groups().iter().any(|&(s, _, _)| s == "clippy") {
+    if reg.sess.lint_store.borrow_state() == std::cell::BorrowState::Unused && reg.sess.lint_store.borrow().get_lint_groups().iter().any(|&(s, _, _)| s == "clippy") {
         reg.sess.struct_warn("running cargo clippy on a crate that also imports the clippy plugin").emit();
     } else {
         register_plugins(reg);