secondary index creation fails with sasl bucket

tried creating index using cbindex command with both bucket and rest credentials.
1)providing bucket username and password
/opt/couchbase/bin/cbindex -server 127.0.0.1:8091 -auth="bucket-1:password" -type create -bucket bucket-1 -index age3 -fields=age
2015/03/02 09:31:50 revrpc: Got error (Need 200 status!. Got

{401 Unauthorized 401 HTTP/1.1 1 1 map[Pragma:[no-cache] Date:[Mon, 02 Mar 2015 17:31:50 GMT] Content-Length:[0] Cache-Control:[no-cache] Www-Authenticate:[Basic realm="Couchbase Server Admin / REST"] Server:[Couchbase Server]] 0x109dd60 0 [] false map[] 0xc20802a8f0 <nil>}

) and will retry in 1s
2015/03/02 09:31:51 revrpc: Got error (Need 200 status!. Got

{401 Unauthorized 401 HTTP/1.1 1 1 map[Www-Authenticate:[Basic realm="Couchbase Server Admin / REST"] Server:[Couchbase Server] Pragma:[no-cache] Date:[Mon, 02 Mar 2015 17:31:51 GMT] Content-Length:[0] Cache-Control:[no-cache]] 0x109dd60 0 [] false map[] 0xc2081d2000 <nil>}

) and will retry in 1s
09:31:51.199694 [Fatal] HTTP error 401 Unauthorized getting "http://127.0.0.1:8091/pools":
2)providing rest username and password
/opt/couchbase/bin/cbindex -server 127.0.0.1:8091 -auth Administrator:password -type create -bucket default -index age2 -fields=age
09:09:21.149399 [Fatal] HTTP error 401 Unauthorized getting "http://127.0.0.1:8091/pools":