Pin aarch64 musl to 1.22.0

Apparently it fails on 1.23.0 for mysterious reasons
rust-lang · Nov 25, 2017 · bea4879 · bea4879
1 parent 6978440
commit bea4879
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -53,7 +53,8 @@ matrix:
     - env: TARGET=arm-unknown-linux-musleabihf
     - env: TARGET=aarch64-unknown-linux-gnu
     - env: TARGET=aarch64-unknown-linux-musl
-      rust: beta
+      # FIXME(#856)
+      rust: 1.22.1
     - os: osx
       osx_image: xcode8.2
       env: TARGET=i386-apple-ios