BUG #14755: unexpected error

The following bug has been logged on the website:

Bug reference: 14755
Logged by: Eugen Konkov
Email address: kes-kes(at)yandex(dot)ru
PostgreSQL version: 9.6.1
Operating system: Linux mint 18: Linux work 4.4.0-57-generic #78-Ubu
Description:

SELECT me.id, me.user_id, me.role_id FROM users_roles me JOIN users user ON
user.id = me.user_id JOIN roles "Role" ON "Role".id = me.role_id;
ERROR: syntax error at or near "user"
LINE 1: ...er_id, me.role_id FROM users_roles me JOIN users user ON us...
^

I undestand that 'user' is conflict with reserved word 'user', but why
'syntax error' I can not explain

I think this error message should be clarified