.collect(Collectors.toList());
        }
    }

    private static void checkCommit(String commit) throws IOException, InterruptedException, ExecutionException {
        List<String> parentCommits = parentCommitsOf(commit);
        if (parentCommits.size() != 2) {
            System.out.println(commit + " is not a merge commit we're looking for. Parents: " + parentCommits);
            return;
        }