When creating a branch permission, the option Check for 1 successful build on the last commit automatically enforces that there are no failed builds on the last commit.
This is not very clear to the end users, there is some text in the dialog mentioning "Also notifies users of failed builds before merging". However, it's not very clear that this option prevents merging in case of a failed build.
In cases where users have 1 successful and 1 failed build on the last commit, the merge fails when this option is enabled and it's not clear why.
Change the text in the 'Branch permission' dialog, to make it clear that the option Check for 1 successful build on the last commit enforces no failed builds on the last commit.