reduce the chance for random circleci breakage (LeelaChessZero#1154)

borg323 · web-flow · commit b5bedf45d81a · 2020-03-26T17:27:18.000+02:00
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -34,7 +34,7 @@ jobs:
           name: Build GCC
           command: |
             cd build-gcc
-            ninja
+            ninja -j 4
       - run:
           command: cp build-clang/lc0 /tmp/lc0-clang
       - run:
