datareader works with trees again, save_result doesn't overwrite
datareader works with trees again, save_result doesn't overwrite


Former-commit-id: 1052550c6519d9d7176ac8bd278b1bc43877c6a7 [formerly 902e8e3b58ec1d3cd329ad42f52e6ac76a36c75b] [formerly 902e8e3b58ec1d3cd329ad42f52e6ac76a36c75b [formerly 902e8e3b58ec1d3cd329ad42f52e6ac76a36c75b [formerly 36e1f9197497de5e33ce73c82437441882828a4f]]]
Former-commit-id: aea4312916f079389afafe8f5dfe3bb5dfb5044c
Former-commit-id: dd287ab0833dfb27414d3ad47fb51591963734f4 [formerly 447d2720a4e5ede34e0ec659d4a4a1bc523fcf69]
Former-commit-id: 7068fc2b54789a7ddb989d1350ca96568c35c553
interrogator/corpkit,interrogator/corpkit