Use docker for MIPS

Author: Alexander Polakov

.travis.yml

@@ -34,7 +34,7 @@ matrix:
       env: TARGET=arm-unknown-linux-gnueabihf
       rust: nightly
     - os: linux
-      env: TARGET=mips-unknown-linux-gnu
+      env: TARGET=mips-unknown-linux-gnu DOCKER=plhk/ubuntu-cross-mips:latest
       rust: nightly
     - os: linux
       env: TARGET=aarch64-unknown-linux-gnu

ci/run.sh

@@ -31,7 +31,7 @@ case "$TARGET" in
     ;;
 
   mips-unknown-linux-gnu)
-    qemu-mips -L /usr/mips-linux-gnu libc-test/target/$TARGET/debug/libc-test
+    qemu-mips -L /usr/mips-linux-gnu /tmp/$TARGET/debug/libc-test
     ;;
 
   aarch64-unknown-linux-gnu)