Always apt-get update

circle.yml

@@ -4,6 +4,7 @@ job: &JOB
   - image: jimmycuadra/rust:1.19.0
   steps:
   - checkout
+  - apt-get update
   - run: ./test/add_target.sh
   - restore_cache:
       key: registry

test/build_openssl.sh

@@ -5,7 +5,6 @@ if [ -d ~/openssl ]; then
     exit 0
 fi
 
-apt-get update
 apt-get install -y --no-install-recommends curl
 
 case "${LIBRARY}" in