Re: Security - he hasn't heard of it
"I understand this is annoying, ..."
... because there is a detectable error in the unit file and yet the system does not tell me about it.
"but still: The username is clearly not valid."
...so systemd feels free to make shit up and do that instead.
Sorry Lennart. This is not a security bug but it is definitely a bug, and a pretty embarrassing one at that.