Fix android build jobs

Author: gnzlbg

.travis.yml

@@ -99,7 +99,6 @@ matrix:
         - shellcheck ci/*.sh
   allow_failures:
     # FIXME https://github.com/rust-lang/libc/issues/1170
-    - name: "x86_64-linux-android - no assert_instr"
     - name: "arm-linux-androideabi - no assert_instr"
     - name: "aarch64-linux-android - no assert_instr"
     # clippy changes enough from time to time that it breaks relatively

ci/android-install-sdk.sh

@@ -47,12 +47,12 @@ esac;
 
 # --no_https avoids
 # javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found
-echo "yes" | \
-    ./sdk/tools/bin/sdkmanager --no_https \
-        "emulator" \
-        "platform-tools" \
-        "platforms;android-24" \
-        "system-images;android-24;default;$abi"
+yes | ./sdk/tools/bin/sdkmanager --licenses --no_https
+yes | ./sdk/tools/bin/sdkmanager --no_https \
+    "emulator" \
+    "platform-tools" \
+    "platforms;android-24" \
+    "system-images;android-24;default;$abi"
 
 echo "no" |
     ./sdk/tools/bin/avdmanager create avd \