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Signed-off-by: Jessica Frazelle <jess@docker.com>

hack/make/validate-vet

@@ -6,17 +6,27 @@ IFS=$'\n'
 files=( $(validate_diff --diff-filter=ACMR --name-only -- '*.go' | grep -v '^vendor/' || true) )
 unset IFS
 
+errors=()
 for f in "${files[@]}"; do
-    # we use "git show" here to validate that what's committed is vetted
-    failedVet=$(git show "$VALIDATE_HEAD:$f" | go vet)
-    if [ $failedVet ]; then
-        fails=yes
-        echo $failedVet
-    fi
+	# we use "git show" here to validate that what's committed passes go vet
+	failedVet=$(go vet "$f")
+	if [ "$failedVet" ]; then
+		errors+=( "$failedVet" )
+	fi
 done
 
-if [ $fails ]; then
-    echo 'Please review and resolve the above issues and commit the result.'
+
+if [ ${#errors[@]} -eq 0 ]; then
+	echo 'Congratulations!  All Go source files have been vetted.'
 else
-    echo 'All Go source files have been vetted.'
+	{
+		echo "Errors from go vet:"
+		for err in "${errors[@]}"; do
+			echo " - $err"
+		done
+		echo
+		echo 'Please fix the above errors. You can test via "go vet" and commit the result.'
+		echo
+	} >&2
+	false
 fi