weird, I can persistently reproduce it, but only with bitbucket server (my github organization works fine with postgres 11 and drone 1.0.0-rc.2.
Withouth having the possibility to look at the code, the number -62135596800 catches my eye as this number represents the difference between Unix Epoch 0 (1970-01-01T00:00:00Z) and 0001-01-01T00:00:00Z .
In golang time.Time default / zero value is 0001-01-01T00:00:00Z and time.Timestamp defaults to Unix Epoch 0 (1970-01-01T00:00:00Z)
I guess in the bitbucket server connector is somewhere in the user creation execution flow a wrong type used or wrongly converted, but I’m just blindly guessing here. Maybe the user_updated field?