We’re playing with 9.2.15.0 (from 9.2.13.0) and are noticing that one of our build processes is hanging when trying to do some system calls. Still investigating, but it seems like maybe the behavior when using `system` has changed slightly? 

There’s a lot going on, but I haven’t yet been able to repro with anything simpler. Bash script calls a rake task (using exec) which calls a ruby script (using system) which does a little chdir (Dir.chdir) work before calling into gradle wrapper (using system) which ultimately uses exec to start java. Seems like the final gradle process hangs (in Tl process state) every time with the upper layers all waiting on it. 

Seems to be calling the process with `sh -c cd ‘...’ ; <path_to_gradle_wrapper> <args >` as opposed to `/bin/sh -c <path_to_gradle_wrapper> <args>`

Still digging. but just in case there is something obvious going on