Killed build still in state 'running'

[nzoschke]

I did a build during a rack update, which terminated the build container. The build is now displaying as running even though the container is no longer there.

$ cx builds 
ID          STATUS    STARTED         ELAPSED
BNPJOFSPJH  running   2 minutes ago   2m23s
BXHMFSNOCN  complete  44 minutes ago  6m59s
$ cx builds logs BNPJOFSPJH
error: could not find task for pid: 4679eb5a069e