diff --git a/.drone.yml b/.drone.yml
index 197c10d..c5d474c 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -33,6 +33,14 @@ steps:
       - ls -lR /opt/drone/cache/go-mod || echo "/opt/drone/cache/go-mod not found"
       - echo "==== After build, /opt/drone/cache/go-build ===="
       - ls -lR /opt/drone/cache/go-build || echo "/opt/drone/cache/go-build not found"
+      - echo "==== Whoami and permissions ===="
+      - whoami
+      - id
+      - ls -ld /opt/drone/cache/go-mod
+      - ls -ld /opt/drone/cache/go-build
+      - go env GOMODCACHE
+      - go env GOCACHE
+      - touch /opt/drone/cache/go-mod/testfile_from_build
 
   - name: rebuild cache
     image: drillster/drone-volume-cache