try

Author: Mr-Leshiy

rust/Earthfile

@@ -20,6 +20,7 @@ COPY_SRC:
 # builder : Set up our target toolchains, and copy our files.
 builder:
     DO rust-ci+SETUP
+    RUN --no-cache echo "Dropping cache"
 
 # sync-cfg: Synchronize local config with CI version.
 # Must be run by the developer manually.