I've just installed Bobby, and it works most of the time. However, if my computer goes to sleep after some inactivity, Bobby crashes minecraft on launch. The only fix is a reboot of my computer.

Crash Report

latest.log

Some other, long-running program is leaking inotify watch registrations, such that at some point none are left (and any program which then wants to watch a file for changes will run into problems).
You can delay the issue by increasing the limit, though ideally you'd figure which program it is and report the issue to them.