[relevant-mutations.html]
  type: testharness
  expected: TIMEOUT
  disabled: unstable failures and timeouts in release builds
  [src removed]
    expected: TIMEOUT

  [inserted into picture]
    expected: TIMEOUT

  [removed from picture]
    expected: TIMEOUT

  [parent is picture, previous source inserted]
    expected: TIMEOUT

  [parent is picture, previous source removed]
    expected: TIMEOUT

  [parent is picture, previous source has srcset set]
    expected: TIMEOUT

  [parent is picture, previous source has srcset changed]
    expected: TIMEOUT

  [parent is picture, previous source has srcset removed]
    expected: TIMEOUT

  [parent is picture, previous source has sizes set]
    expected: TIMEOUT

  [parent is picture, previous source has sizes changed]
    expected: TIMEOUT

  [parent is picture, previous source has sizes removed]
    expected: TIMEOUT

  [parent is picture, previous source has media set]
    expected: TIMEOUT

  [parent is picture, previous source has media changed]
    expected: TIMEOUT

  [parent is picture, previous source has media removed]
    expected: TIMEOUT

  [parent is picture, previous source has type set]
    expected: TIMEOUT

  [parent is picture, previous source has type changed]
    expected: TIMEOUT

  [parent is picture, previous source has type removed]
    expected: TIMEOUT

  [srcset set]
    expected: TIMEOUT

  [srcset changed]
    expected: TIMEOUT

  [srcset removed]
    expected: TIMEOUT

  [sizes set]
    expected: TIMEOUT

  [sizes changed]
    expected: TIMEOUT

  [sizes removed]
    expected: TIMEOUT

  [crossorigin absent to empty]
    expected: TIMEOUT

  [crossorigin absent to anonymous]
    expected: TIMEOUT

  [crossorigin absent to use-credentials]
    expected: TIMEOUT

  [crossorigin empty to absent]
    expected: TIMEOUT

  [crossorigin empty to use-credentials]
    expected: TIMEOUT

  [crossorigin anonymous to absent]
    expected: TIMEOUT

  [crossorigin anonymous to use-credentials]
    expected: TIMEOUT

  [crossorigin use-credentials to absent]
    expected: TIMEOUT

  [crossorigin use-credentials to empty]
    expected: TIMEOUT

  [crossorigin use-credentials to anonymous]
    expected: TIMEOUT