do not swallow output

Signed-off-by: Dr. Jan-Philip Gehrcke <[email protected]>

Author: jgehrcke

tests/bats/Makefile

@@ -43,7 +43,7 @@ image:
 # cmdline args).
 .PHONY: tests
 tests: image
-	@mkdir -p tests-out && \
+	mkdir -p tests-out && \
 	export _RUNDIR=$$(mktemp -p tests-out -d -t bats-tests-$$(date +%s)-XXXXX) && \
 	docker run \
 		--rm \