I wanna remove Speedpatch by typing apt-get purge speedpatch.
But after rebooting I'm getting

BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

-sh: /home/user/.bashrc: line 5: cannot create /dev/cgroup/cpu/user/2686/tasks: nonexistent directory
-sh: /home/user/.bashrc: line 5: cannot create /dev/cgroup/cpu/user/2686/notify_on_release: nonexistent directory
~ $

How can I solve this?!