The open source community is "quite a sick place to be in," Red Hat engineer and Systemd developer Lennart Poettering said Monday in a post on Google+. "The open source community is full of [assh*les], and I probably more than most others am one of their most favorite targets," Poettering added. "I get hate mail for hacking on open source. People have started multiple 'petitions' .... asking me to stop working. Recently, people started collecting Bitcoins to hire a hitman for me (this really happened!)."