error: encountered diff marker
  --> $DIR/item-with-attr.rs:2:1
   |
LL | <<<<<<< HEAD
   | ^^^^^^^ between this marker and `=======` is the code that we're merging into
LL | fn foo() {}
LL | =======
   | ------- between this marker and `>>>>>>>` is the incoming code
LL | fn bar() {}
LL | >>>>>>> branch
   | ^^^^^^^ this marker concludes the conflict region
   |
   = note: conflict markers indicate that a merge was started but could not be completed due to merge conflicts
           to resolve a conflict, keep only the code you want and then delete the lines containing conflict markers
   = help: if you're having merge conflicts after pulling new code:
           the top section is the code you already had and the bottom section is the remote code
           if you're in the middle of a rebase:
           the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
   = note: for an explanation on these markers from the `git` documentation:
           visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>

error: aborting due to 1 previous error