diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index 2ddf01a..0502da8 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -32,7 +32,7 @@ jobs:
           opam install bisect_ppx
 
       - name: Build
-        run: opam exec -- dune build --instrument-with bisect_ppx
+        run: opam exec -- dune build --instrument-with bisect_ppx @all
 
       - name: Testing
         run: |
diff --git a/test/e2e/miragevpn-server.sh b/test/e2e/miragevpn-server.sh
index d336d9f..bf7931c 100755
--- a/test/e2e/miragevpn-server.sh
+++ b/test/e2e/miragevpn-server.sh
@@ -21,7 +21,7 @@ pidfile="/tmp/miragevpn-e2e.pid"
 
 # kill openvpn client
 cleanup () {
-	cat "$pidfile" | xargs kill
+	{ cat "$pidfile" || true } | xargs -r kill
 	rm -f "$pidfile"
 }
 trap cleanup EXIT