OpenVZ is running…
Checking for CPT version compatibility
Checking for CPU flags compatibility
Error: CT is locked
Error in ioctl(CPT_TEST_VECAPS): Resource temporarily unavailable
Error: CPU capabilities check failed!
Error: Destination node CPU is not compatible
Error: Can’t continue live migration

Reboot not help:

vzctl restart CTID
Restarting container
Stopping container …
Child 441850 exited with status 7
Killing container …
Child 441851 exited with status 7
Unable to stop container

Fix:

vzctl chkpnt CTID --kill