Update cross docker image

Author: mattico

.travis.yml

@@ -19,59 +19,59 @@ matrix:
     # bundle all the gcc cross compilers to enable us to build OpenSSL
     - os: linux
       env: TARGET=arm-unknown-linux-gnueabi
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=arm-unknown-linux-gnueabihf
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=armv7-unknown-linux-gnueabihf
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=aarch64-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=x86_64-unknown-freebsd
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=x86_64-unknown-netbsd
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=powerpc-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=powerpc64-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=powerpc64le-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=mips-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=mipsel-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=mips64-unknown-linux-gnuabi64
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=mips64el-unknown-linux-gnuabi64
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
     - os: linux
       env: TARGET=s390x-unknown-linux-gnu
-           DOCKER=alexcrichton/rust-slave-linux-cross:2016-11-11
+           DOCKER=alexcrichton/rust-slave-linux-cross:2017-02-02
            SKIP_TESTS=1
 
     # Android use a local docker image