test(rust): try earthly no-cache

Signed-off-by: bkioshn <[email protected]>

Author: bkioshn

rust/Earthfile

@@ -21,6 +21,7 @@ COPY_SRC:
 # builder : Set up our target toolchains, and copy our files.
 builder:
     DO rust-ci+SETUP
+    RUN --no-cache
 
 # sync-cfg: Synchronize local config with CI version.
 # Must be run by the developer manually.