process already being traced?

[rush24]

run rbtrace -p $PID --firehose in MacOS 10.13.2 ruby 2.4.2

[SamSaffron]

I am very confused about this bug report, can you explain in detail what is happening?

[stakach]

Can happen when something goes wrong and rbtrace doesn't cleanly exit, there is no way to re-attach to the process, even if the previous instance of rbtrace has been killed

[jeremy]

May be the same as #87?