There is a concept in copyright law of a minimum size below which something cannot have been a copyrightable work. That bug report, in purticular, would appear to be well below the limit.
If that is the case, it does not matter if you copied the bug report of someone else without having the right to copy (which is what copyright means, of course).
Update: The second paragraph is wrong in it's reasoning: there is a certian minimum size, below which it is not possible to restrict the right to copy: everone has it, and it is impossible to lack that right.
The interesting question, of course, is what is that limit.