Help needed: regex manager produces hard-to-debug WARN: Error updating branch: update failure

[DanySK]

How are you running Renovate?

None

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

No response

Please tell us more about your question or problem

I created a regex manager:

{
      "customType": "regex",
      "fileMatch": [
        "^(workflow-templates|\\.github\\/workflows)\\/[^/]+\\.[Yy][Aa]?[Mm][Ll]$",
        "(^|\\/)action\\.[Yy][Aa]?[Mm][Ll]$"
      ],
      "matchStrings": [
          "\\s+hugo-version:\\s+'?\"?(?<version>\\d+(\\.\\d+)*)'?\"?"
      ],
      "depNameTemplate": "hugo",
      "currentValueTemplate": "v{{{version}}}",
      "packageNameTemplate": "gohugoio/hugo",
      "datasourceTemplate": "github-tags",
      "versioningTemplate": "semver-coerced",
      "pinDigests": false
    }

which seems to work correctly:

DEBUG: syncBranchState() (branch="renovate/hugo-0.100.x")
DEBUG: syncBranchState(): update baseBranchSha (branch="renovate/hugo-0.100.x")
DEBUG: getBranchPr(renovate/hugo-0.100.x) (branch="renovate/hugo-0.100.x")
DEBUG: findPr(renovate/hugo-0.100.x, undefined, open) (branch="renovate/hugo-0.100.x")
DEBUG: branchExists=false (branch="renovate/hugo-0.100.x")
DEBUG: dependencyDashboardCheck=undefined (branch="renovate/hugo-0.100.x")
DEBUG: Check for closed PR because recreating closed PRs is disabled. (branch="renovate/hugo-0.100.x")
DEBUG: findPr(renovate/hugo-0.100.x, ci(deps): update dependency hugo to v0.100.2, !open) (branch="renovate/hugo-0.100.x")
DEBUG: prAlreadyExisted=false (branch="renovate/hugo-0.100.x")
DEBUG: Open PR Count: 0, Existing Branch Count: 0, Hourly PR Count: 0 (branch="renovate/hugo-0.100.x")
DEBUG: prHourlyLimit of the upgrades present in this branch (branch="renovate/hugo-0.100.x")
{
  "limits": [
    {
      "depName": "hugo",
      "prHourlyLimit": 0
    }
  ]
}

DEBUG: prHourlyLimit of this branch is unlimited, because atleast one of the upgrade has it's prHourlyLimit set to "No limit" ie. 0 or null (branch="renovate/hugo-0.100.x")
DEBUG: branchConcurrentLimit of the upgrades present in this branch (branch="renovate/hugo-0.100.x")
{
  "limits": [
    {
      "depName": "hugo",
      "branchConcurrentLimit": null
    }
  ]
}

DEBUG: Calculated lowest branchConcurrentLimit among the upgrades present in this branch is 25. (branch="renovate/hugo-0.100.x")
DEBUG: Checking schedule(schedule=at any time, tz=null, now=2025-01-24T11:11:02.958Z) (branch="renovate/hugo-0.100.x")
DEBUG: No schedule defined (branch="renovate/hugo-0.100.x")
DEBUG: Branch needs creating (branch="renovate/hugo-0.100.x")
DEBUG: Using reuseExistingBranch: false (branch="renovate/hugo-0.100.x")
DEBUG: Setting current branch to master (branch="renovate/hugo-0.100.x")
DEBUG: latest commit (branch="renovate/hugo-0.100.x")
{
  "branchName": "master"
  "latestCommitDate": "2025-01-24T11:10:51Z"
}

DEBUG: manager.getUpdatedPackageFiles() reuseExistingBranch=false (branch="renovate/hugo-0.100.x")
DEBUG: Starting search at index 411 (branch="renovate/hugo-0.100.x")
{
  "packageFile": ".github/workflows/build-and-deploy.yml"
  "depName": "hugo"
}

DEBUG: Found match at index 411 (branch="renovate/hugo-0.100.x")
{
  "packageFile": ".github/workflows/build-and-deploy.yml"
  "depName": "hugo"
}

DEBUG: Value is not updated (branch="renovate/hugo-0.100.x")
{
  "depName": "hugo"
  "manager": "regex"
  "packageFile": ".github/workflows/build-and-deploy.yml"
  "expectedValue": "v0.100.2"
  "foundValue": "v0.73.0"
}

Except that it fails with a very hard to debug

WARN: Error updating branch: update failure (branch="renovate/hugo-0.100.x")

(why did it fail? what's the problem?)

I guess something's wrong with my regex but I'm having a hard time understanding what. The repo is https://github.com/pslab-unibo/web-frontend.

The minimal reproduction is available at: https://github.com/DanySK/reproduction-renovate-bug-33821

Logs (if relevant)

the complete log is too long

[github-actions[bot]]

Hi there,

We appreciate the effort you put into creating a reproduction. But your reproduction is not minimal yet, or is missing fields we ask for in our template.

Please re-read the steps and documentation given in the previous message, and try again to create a minimal reproduction.

Thanks, the Renovate team

[DanySK]

Here is a minimal reproduction repo: https://github.com/DanySK/reproduction-renovate-bug-33821