Set up a system agent and configured Arcanist's certificate. When running:
```
echo "{}" | arc --conduit-uri=https://code.pageuppeople.com call-conduit user.whoami
```
received:
```
{"error":"ERR-USER-DISABLED","errorMessage":"ERR-USER-DISABLED: User account is not activated.","response":null}
```
Replaced the certificate with that of a normal user and the `user.whoami` call worked correctly.