Require branches to be up to date is not compatible with update_method=rebase if update_bot_account isn't set.

[grondo]

Hi, We just started getting this error on PRs on our repo in the past 24 hours. We have not changed branch protection rules or the mergify config recently, so we're wondering how to work around this issue? This was working within the last couple days and is affecting multiple users (not just a single account).

Our mergify.yml

queue_rules:
  - name: default
    conditions:
      - base=master
      - status-success="validate commits"
      - status-success="spelling"
      - status-success="flux-sched check"
      - status-success="flux-accounting check"
      - status-success="python linting"
      - status-success="bionic"
      - status-success="bionic - 32 bit"
      - status-success="bionic - gcc-8,content-s3,distcheck"
      - status-success="bionic - py3.7,clang-6.0"
      - status-success="bionic - test-install"
      - status-success="focal - py3.8"
      - status-success="el7"
      - status-success="el8"
      - status-success="fedora33 - gcc-10,py3.9"
      - status-success="fedora34 - gcc-11.2,py3.9"
      - status-success="coverage"
      - status-success="address-sanitizer check"
      - label="merge-when-passing"
      - label!="work-in-progress"
      - "approved-reviews-by=@flux-framework/core"
      - "#approved-reviews-by>0"
      - "#changes-requested-reviews-by=0"
      - -title~=^\[*[Ww][Ii][Pp]

pull_request_rules:
  - name: rebase and merge when passing all checks
    conditions:
      - base=master
      - label="merge-when-passing"
      - label!="work-in-progress"
      - -title~=^\[*[Ww][Ii][Pp]
      - "approved-reviews-by=@flux-framework/core"
      - "#approved-reviews-by>0"
      - "#changes-requested-reviews-by=0"
    actions:
      queue:
        name: default
        method: merge
        update_method: rebase
  - name: remove outdated approved reviews
    conditions:
      - author!=@core
    actions:
      dismiss_reviews:
        approved: true
        changes_requested: false
        message: |
          Approving reviews have been dismissed because this pull request
          was updated.

Example of failing PR: flux-framework/flux-core#5144

Apologies if this is something obvious!

[grondo]

Looks like this started working again this week, so I'll close this question for now. Thanks!