sequence-contract violation in test

[samth]

http://drdr.racket-lang.org/54316/cs/racket/share/pkgs/gui-test/framework/tests/frame.rkt

sequence-contract-violation: negative: method delete cannot be called, except in states (unlocked), args 0 1
  context...:
   do-error
   .../wxme/undo.rkt:68:4: !undo method in insert-record%
   .../wxme/editor.rkt:954:8: loop
   .../wxme/editor.rkt:950:2: !perform-undos method in editor%
   .../wxme/editor.rkt:835:2: !undo method in editor%
   .../tests/frame.rkt:107:5
   .../common/queue.rkt:435:6
   call-in-empty-metacontinuation-frame
   [repeats 1 more time]
   .../common/queue.rkt:486:32
   .../private/more-scheme.rkt:148:2: call-with-break-parameterization
   call-in-empty-metacontinuation-frame
   .../common/queue.rkt:374:13: loop
   call-in-empty-metacontinuation-frame
   call-with-empty-metacontinuation-frame-for-swap

cc @racket/ci

[rfindler]

This may be a race-condition in the test.

[samth]

Yes, that's my guess.