work around fallout from these changes in rustc

1 files changed, 5 insertions, 1 deletions

diff --git a/src/librustc_metadata/decoder.rs b/src/librustc_metadata/decoder.rs
index e1c17e8260a..b0c945fbf2a 100644
--- a/src/librustc_metadata/decoder.rs
+++ b/src/librustc_metadata/decoder.rs
@@ -29,6 +29,7 @@ use rustc::session::Session;
 use rustc::ty::{self, Ty, TyCtxt};
 use rustc::ty::codec::TyDecoder;
 use rustc::mir::Mir;
+use rustc::util::captures::Captures;
 use rustc::util::nodemap::FxHashMap;
 
 use std::collections::BTreeMap;
@@ -146,7 +147,10 @@ impl<'a, 'tcx: 'a, T: Decodable> Lazy<T> {
 }
 
 impl<'a, 'tcx: 'a, T: Decodable> LazySeq<T> {
-    pub fn decode<M: Metadata<'a, 'tcx>>(self, meta: M) -> impl Iterator<Item = T> + 'a {
+    pub fn decode<M: Metadata<'a, 'tcx>>(
+        self,
+        meta: M,
+    ) -> impl Iterator<Item = T> + Captures<'tcx> + 'a {
         let mut dcx = meta.decoder(self.position);
         dcx.lazy_state = LazyState::NodeStart(self.position);
         (0..self.len).map(move |_| T::decode(&mut dcx).unwrap())