Duplicated and extra matrix jobs generated when using macOS runner

Associated GitHub Community ticket: https://github.community/t/specific-workflow-runs-keeps-failing-with-an-internal-error-on-macos/135997

The customer set a matrix in his workflow like as below:

  ci_macos:
    name: macOS + vcpkg
    runs-on: macos-10.15
    strategy:
      matrix:
        qbt_gui: ["GUI=ON", "GUI=OFF"]
      fail-fast: false

According to the matrix configurations, it should only generate 2 matrix jobs:

• macOS + vcpkg (GUI=ON) runs on macos-10.15
• macOS + vcpkg (GUI=OFF) runs on macos-10.15

But when executing the workflow, it will generate some duplicated and extra matrix jobs, and all the extra matrix jobs will go failed. This causes the workflow run to be failed.

In the same workflow, the customer also set the similar matrix configurations to run jobs on the Ubuntu runners, the matrix can work fine, and no any extra matrix jobs generated.

  ci_ubuntu:
    name: Ubuntu
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-20.04, ubuntu-18.04]
        qbt_gui: ["GUI=ON", "GUI=OFF"]
      fail-fast: false

See the following two examples: https://github.com/qbittorrent/qBittorrent/actions/runs/277763652/workflow https://github.com/qbittorrent/qBittorrent/actions/runs/277637794/workflow

[FranciscoPombal]

@ruvceskistefan Thanks, but this issue is no longer relevant. It was probably some spurious problem at the time, or some kind of bug that has since been fixed.

[juliobbv]

I’ll be taking a look at this item today or tomorrow. I don’t have perms to transfer/assign this issue to myself, but I’ll keep an eye on it.