Fix CI (#93)

circle.yml

@@ -43,13 +43,13 @@ dependencies:
       fi
     - make -f travis-build/Makefile prepare-rustfmt
     - |
-      if [[ ! -e $HOME/.local/lib/librocksdb.so ]]; then
+      if [[ ! -e $HOME/.local/lib/librocksdb.so.5.5.1 ]]; then
         export CPLUS_INCLUDE_PATH="${LOCAL_PREFIX}/include" && \
         cd /tmp && \
         curl -L https://github.com/facebook/rocksdb/archive/v5.5.1.tar.gz -o rocksdb.tar.gz && \
         tar xf rocksdb.tar.gz && \
         cd rocksdb-5.5.1 && \
-        INSTALL_PATH=${LOCAL_PREFIX} make -j install-shared;
+        INSTALL_PATH=${LOCAL_PREFIX} make -j 1 install-shared;
       fi
   post:
     # cargo test also use debug