[ci] Switch clang-O3-O0 bot to Ubuntu image

https://github.com/harfbuzz/harfbuzz/issues/1566

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1d8f97b..defba1a 100644 (file)
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -73,7 +73,7 @@ jobs:
 
   clang-O3-O0:
     docker:
-      - image: multiarch/crossbuild
+      - image: ubuntu:18.10
     steps:
       - checkout
       - run: apt update || true