Ignore the previous comment, I still had the wrong version installed. Let's try that again...
$ apt list snapd
Listing... Done
snapd/bionic-proposed,now 2.37.1.1+18.04 amd64 [installed]
N: There are 2 additional versions. Please use the '-a' switch to see them.
$ sudo systemd-run --pty --wait '/bin/echo' '$PATH'
[sudo] password for will:
Running as unit: run-u120.service
Press ^] three times within 1s to disconnect TTY.
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
Finished with result: success
Main processes terminated with: code=exited/status=0
Service runtime: 13ms
Ignore the previous comment, I still had the wrong version installed. Let's try that again...
$ apt list snapd proposed, now 2.37.1.1+18.04 amd64 [installed]
Listing... Done
snapd/bionic-
N: There are 2 additional versions. Please use the '-a' switch to see them.
$ sudo systemd-run --pty --wait '/bin/echo' '$PATH' sbin:/usr/ local/bin: /usr/sbin: /usr/bin: /sbin:/ bin status= 0
[sudo] password for will:
Running as unit: run-u120.service
Press ^] three times within 1s to disconnect TTY.
/usr/local/
Finished with result: success
Main processes terminated with: code=exited/
Service runtime: 13ms