Parallel executor segment fault.
Created by: gongweibao
[08:14:07] [Step 1/1] 93/125 Test #91: test_parallel_executor ..........................***Exception: SegFault 12.65 sec
[08:14:07] [Step 1/1] test_parallel_testing (test_parallel_executor.ParallelExecutorTestingDuringTraining) ... Unexpected end of /proc/mounts line `overlay / overlay rw,relatime,lowerdir=/var/local/osd0/docker/overlay2/l/W22IXZLGUINU6IYRJWGTBRCHQG:/var/local/osd0/docker/overlay2/l/22HIOT7L3FURKPWQTHNMJFBBKQ:/var/local/osd0/docker/overlay2/l/P2D7CTWS3S6YP5R7P4NEG7II7A:/var/local/osd0/docker/overlay2/l/BPQOTGKCPUMFGRFCWI3WKBP7T4:/var/local/osd0/docker/overlay2/l/4S6XARK27BG3QO5QX5YB2U67RF:/var/local/osd0/docker/overlay2/l/4OV4EBL5SZJBYKVSR64OTOPIWX:/var/local/osd0/docker/overlay2/l/PUJULCIC52SI5KQL62GPSJUJRJ:/var/local/osd0/docker/overlay2/l/3YZXKL2KYO7'
[08:14:07] [Step 1/1] Unexpected end of /proc/mounts line `B5QVG46XP4UTOXI:/var/local/osd0/docker/overlay2/l/OJAHDDTC5W5HD3SVWAQTN3YDES:/var/local/osd0/docker/overlay2/l/JUL7FW455XGV7ILUSQKSU4ICZ4:/var/local/osd0/docker/overlay2/l/BFSARUPBXACRCNM4OEY7ZFA226:/var/local/osd0/docker/overlay2/l/7DLJ3PNAYEKI44VKMVADY2D6ZX:/var/local/osd0/docker/overlay2/l/F6K6PJQEHKEFI7IY42F5MEAXAR:/var/local/osd0/docker/overlay2/l/3MHVH2LLYCVFOAKUZU7KOOHMN2:/var/local/osd0/docker/overlay2/l/D573DGX7SLTXXUNAL5MIPGFPYV:/var/local/osd0/docker/overlay2/l/CHO5Z2CHRMDCRMYB2UWBJWMP4O:/var/lo'
[08:14:07] [Step 1/1] Unexpected end of /proc/mounts line `cal/osd0/docker/overlay2/l/YH725SHAOYMA4SCWJQZR4XKTCO:/var/local/osd0/docker/overlay2/l/LZYNEUU42CH6ON6ZGE6H6NV4EA:/var/local/osd0/docker/overlay2/l/NYEVUI72ZO2CEXXWVCHDUOAB2K:/var/local/osd0/docker/overlay2/l/O4YPLS56H3MU6R4GXO2BJZ67LU:/var/local/osd0/docker/overlay2/l/67J3TUBBEGP2H5FWL5AXLJBKQS:/var/local/osd0/docker/overlay2/l/3TNZJ3FBHJW5HMT4GNCZW5IVNR:/var/local/osd0/docker/overlay2/l/PICQHRLP3YW3DAC5JP6HDNOHTZ:/var/local/osd0/docker/overlay2/l/F3ZE55IQNEVIRQOZ7ZO3XEVORK:/var/local/osd0/docker/overlay'
[08:14:07] [Step 1/1] Unexpected end of /proc/mounts line `2/l/DQ6LVWXEWBDOGQKCJE2CFN3DCP:/var/local/osd0/docker/overlay2/l/3UJYCJW2DIXTERIYGQKD5FA5Z5:/var/local/osd0/docker/overlay2/l/3YHC3KW3KQ27WOTLON3VH4NBJE:/var/local/osd0/docker/overlay2/l/F4VWM4LWE475FVSRSKTFLZG4OK:/var/local/osd0/docker/overlay2/l/C3ZGW4UOIOS2ONELQPQZ3BX2DU:/var/local/osd0/docker/overlay2/l/QDQEZVFRWRVBET5N7CXNE4UWN2:/var/local/osd0/docker/overlay2/l/5OXVYZ6QHHGJKXGNJRXIUZRKKG,upperdir=/var/local/osd0/docker/overlay2/a5b0bec12d9711e8c8be99ff52dbcec829b47071805764f86b172cab0fc4af0d/diff,wor'
[08:14:07] [Step 1/1] ok
[08:14:07] [Step 1/1] test_all (test_parallel_executor.TestCRFModel) ... [142.09879 146.63982]