Password authentication fails when trying to connect to postgresql from clojure with jdbc

I'm learning web development in Clojure and I'm not at all an expert in either PostgreSQL or JDBC.

I'm going through the "Web development with Clojure" book and I'm stuck because I cannot connect to a PostgreSQL database, although I believe I have followed the tutorial step by step.

I connected to psql with

sudo -u postgres psql

Then I created an admin user with password 'admin'

postgres=# CREATE USER admin WITH PASSWORD 'admin';
CREATE ROLE

Then I created a database named reporting :

postgres=# CREATE DATABASE reporting OWNER admin;
CREATE DATABASE

No complaints so far.

Then from my clojure code, I attempt to connect to the database and create a table :

(ns reporting-example.models.db
  (:require [clojure.java.jdbc :as sql]))

;defining the db connection
(def db 
  {:subprotocol "postgresql"
   :subname "//localhost/reporting"
   :user "admin"
   :password "admin"})

;function for creating an 'employee' table
(defn create-employee-table []
  (sql/create-table :employee
                    [:name "varchar(50)"]
                    [:occupation "varchar(50)"]
                    [:place "varchar(50)"]
                    [:country "varchar(50)"])  
  )

; then trying to actually create the table, here's the part that breaks with an exception :
(sql/with-connection db
    (create-employee-table))

And I'm getting an ugly :

org.postgresql.util.PSQLException: FATAL: password authentication failed for user "admin"

Which does not make sense to me, the credentials seem fine.

I tried the above code from both the Counterclockwise REPL and the Leiningen REPL. I'm on Ubuntu 13.10, if that matters.

Could someone explain to me what I am doing wrong here? Thanks in advance!