]

    static void main(String[] commits) {
        println("Commits to check: ${Arrays.toString(commits)}")
        try {
            commits.each { checkCommit(it) }
        } finally {
            THREAD_POOL.shutdown()
        }
    }

    static void checkCommit(String commit) {
        List<String> parentCommits = parentCommitsOf(commit)
        if (parentCommits.size() != 2) {

      - master
  pull_request:
    branches:
      - master

concurrency:
  # On master/release, we don't want any jobs cancelled so the sha is used to name the group
  # On PR branches, we cancel the job if new commits are pushed
  group: ${{ (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/release' ) && format('contributor-pr-base-{0}', github.sha) || format('contributor-pr-{0}', github.ref) }}
  cancel-in-progress: true

### Contributor Checklist
- [ ] [Review Contribution Guidelines](https://github.com/gradle/gradle/blob/master/CONTRIBUTING.md).
- [ ] Make sure that all commits are [signed off](https://git-scm.com/docs/git-commit#Documentation/git-commit.txt---signoff) to indicate that you agree to the terms of [Developer Certificate of Origin](https://developercertificate.org/).

    val channel: String,
    val extraParameters: String = ""
) {
    per_commit(
        displayName = "Performance Regression Test",
        timeout = 420,
        channel = "commits"
    ),
    per_day(
        displayName = "Slow Performance Regression Test",
        timeout = 420,
        channel = "commits"
    ),
    per_week(
        displayName = "Performance Experiment",

    /**
     * Whether the <a href="https://www.jetbrains.com/help/teamcity/configuring-vcs-triggers.html">VCS trigger</a>
     * should be enabled, i.e. when new commits are pushed to this branch, should a ReadyForNightly job
     * be triggered automatically?
     *
     * Currently, we only enable VCS trigger for `master`/`release`/`releaseNx` branches.
     */

        run: sudo apt-get install groovy
      - name: List PR commits
        run: |
          git log --pretty=format:"%H" ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} > pr_commits.txt
      - name: Check PR commits
        id: run_check
        run: |
          groovy .github/workflows/CheckBadMerge.groovy $(<pr_commits.txt) > output.txt 2>&1
      - name: Read output file
        id: read_output

### Creating commits and writing commit messages

The commit messages that accompany your code changes are an important piece of documentation. Please follow these guidelines when creating commits:

* [Write good commit messages.](https://cbea.ms/git-commit/#seven-rules)

        generateReadmeFragment(templateFolder, "$specificContentId-body", settings, comments, descriptor, projectLayoutSetupRegistry)
        if (descriptor.language === Language.JAVA && descriptor.componentType === ComponentType.LIBRARY) {
            generateReadmeFragment(templateFolder, "$specificContentId-api-docs", settings, comments, descriptor, projectLayoutSetupRegistry)
        }

    val commonsCodec = "commons-codec:commons-codec"
    val commonsCompress = "org.apache.commons:commons-compress"
    val commonsHttpclient = "org.apache.httpcomponents:httpclient"
    val commonsIo = "commons-io:commons-io"
    val commonsLang = "commons-lang:commons-lang"
    val commonsLang3 = "org.apache.commons:commons-lang3"
    val commonsMath = "org.apache.commons:commons-math3"

        findLatest("guava", "com.google.guava:guava:(20,)", versionProperties)
        findLatest("commons-math", "org.apache.commons:commons-math3:latest.release", versionProperties)
        findLatest("commons-text", "org.apache.commons:commons-text:latest.release", versionProperties)
        findLatest("kotlin", "org.jetbrains.kotlin:kotlin-gradle-plugin:(1.4,)", versionProperties)