Pin nightlies temporarily

alexcrichton · alexcrichton · commit 5c7482af81bd · 2017-11-28T18:17:15.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -28,7 +28,8 @@ matrix:
 
     - env: TARGET=x86_64-unknown-linux-gnu
            ALT=i686-unknown-linux-gnu
-      rust: nightly
+      # FIXME(rust-lang/rust#46271) should use just `nightly`
+      rust: nightly-2017-11-20
       install:
         - mdbook --help || cargo install mdbook --force
       script:
