[Webkit-unassigned] [Bug 190904] New: [webkitpy] Run 'git clean -xdf' in git.discard_working_directory_changes()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190904

            Bug ID: 190904
           Summary: [webkitpy] Run 'git clean -xdf' in
                    git.discard_working_directory_changes()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: guijemont at igalia.com
                CC: lforschler at apple.com

In the jsc-armv7 EWS bot, we've seen issues with some patches that break tests, such as https://bug-187373-attachments.webkit.org/attachment.cgi?id=352913 where we have issues when checking the ability to pass tests without the patch. The leftovers from the patch in WebKitBuild/ seem to prevent from regenerating something (unsure what), meaning that the tests don't pass any more when we're supposed to check ToT without the patch, thus giving a false negative on the status of the tree ("tree is red?" message), and making the EWS trying this many times (always with the same result) while the queue builds up. Adding a 'git clean -xdf' call in git.discard_working_directory_changes() seems to solve the issue.

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