As long as you're not bumping into anything like a post size limit, you could simply paste the results into your post. BUT I'd be sure to do two things:
Insert a "Hide Details" segment (gear menu at the top of the posting box > "Hide Details"), then paste your log where it says "this text will be hidden", and change the default "Summary" title to something meaningful.
Select all the log output you just pasted and click the </> button at the top of the posting box, to format it as code (usually easier to read since logs tend to assume a fixed width font, and this way special chars won't accidentally trigger Markdown formatting).
If it's just too much text for that, how about one of the suggestions here: