circleCI fails time to time... Bug?

[astroseger]

Time to time circleCI fails in random place with this error:

(Not always at this step!!!)

+ snet service publish testo tests -y -q
Error: list indices must be integers or slices, not str
If you want to see full Traceback then run:
snet --print-traceback [parameters]
Exited with code 42

It might be some race conditions...