Attempt to fix the iOS and linux builds

.travis.yml

@@ -9,13 +9,12 @@ addons:
     - cmake
 install: >
   if [ "$TRAVIS_OS_NAME" = "linux" ]; then
-    set -eu
-    git clone -b 1.9 https://github.com/gnustep/libobjc2.git
-    mkdir libobjc2/build
-    cd libobjc2/build
-    export CC="clang"
-    export CXX="clang++"
-    cmake -DCMAKE_INSTALL_PREFIX:PATH=$HOME/libobjc2_staging ../
+    git clone -b 1.9 https://github.com/gnustep/libobjc2.git &&
+    mkdir libobjc2/build &&
+    cd libobjc2/build &&
+    export CC="clang" &&
+    export CXX="clang++" &&
+    cmake -DCMAKE_INSTALL_PREFIX:PATH=$HOME/libobjc2_staging ../ &&
     make install
   fi
 before_script: >
@@ -56,11 +55,11 @@ jobs:
     osx_image: xcode7.3
     rust: 1.41.0
     before_install: >
-      rustup target add \
-      i386-apple-ios \
-      x86_64-apple-ios \
-      armv7-apple-ios \
-      armv7s-apple-ios \
+      rustup target add
+      i386-apple-ios
+      x86_64-apple-ios
+      armv7-apple-ios
+      armv7s-apple-ios
       aarch64-apple-ios
     install: curl -LO https://github.com/SSheldon/rust-test-ios/releases/download/0.1.1/rust-test-ios && chmod +x rust-test-ios
     env: FEATURES="exception"