pin to an older nightly

cf. rust-lang/cargo#3819
rust-embedded · Mar 12, 2017 · c5d6757 · c5d6757
1 parent 2bc1835
commit c5d6757
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -24,7 +24,7 @@ matrix:
 
     # Nightly, for testing
     - env: TARGET=x86_64-unknown-linux-gnu
-      rust: nightly
+      rust: nightly-2017-03-04
 
 install:
   - sh ci/install.sh