Tapicero errors on clam

from clam:

Nov 26 12:20:29 clam tapicero[25634]: Prepared storage user-ad8cf3d3bd8d959606a96a31db1b91f1
Nov 26 12:20:52 clam tapicero[25634]: Prepared storage user-ad8cf3d3bd8d959606a96a31db1b91c5
Nov 26 12:21:29 clam tapicero[25634]: Creating database user-ad8cf3d3bd8d959606a96a31db1b8cd4 failed due to: RestClient::PreconditionFailed: 412 Precondition Failed
Nov 26 12:21:34 clam tapicero[25634]: Creating database user-ad8cf3d3bd8d959606a96a31db1b8cd4 failed twice due to: RestClient::PreconditionFailed: 412 Precondition Failed
Nov 26 12:21:34 clam tapicero[25634]: Uploading design doc to user-ad8cf3d3bd8d959606a96a31db1b8cd4 failed due to: RestClient::Conflict: 409 Conflict
Nov 26 12:21:39 clam tapicero[25634]: Uploading design doc to user-ad8cf3d3bd8d959606a96a31db1b8cd4 failed twice due to: RestClient::ResourceNotFound: 404 Resource Not Found: {"error":"not_found","reason":"Database does not exist."}
Nov 26 12:21:39 clam tapicero[25634]: Uploading design doc to user-ad8cf3d3bd8d959606a96a31db1b8cd4 failed due to: RestClient::ResourceNotFound: 404 Resource Not Found: {"error":"not_found","reason":"Database does not exist."}
Nov 26 12:21:44 clam tapicero[25634]: Uploading design doc to user-ad8cf3d3bd8d959606a96a31db1b8cd4 failed twice due to: RestClient::ResourceNotFound: 404 Resource Not Found: {"error":"not_found","reason":"Database does not exist."}
Nov 26 12:21:44 clam tapicero[25634]: Prepared storage user-ad8cf3d3bd8d959606a96a31db1b8cd4
Nov 26 12:21:52 clam tapicero[25634]: Creating database user-ad8cf3d3bd8d959606a96a31db1b864f failed due to: RestClient::PreconditionFailed: 412 Precondition Failed
Nov 26 12:21:57 clam tapicero[25634]: Creating database user-ad8cf3d3bd8d959606a96a31db1b864f failed twice due to: RestClient::PreconditionFailed: 412 Precondition Failed
Nov 26 12:21:57 clam tapicero[25634]: Prepared storage user-ad8cf3d3bd8d959606a96a31db1b864f

(from redmine: created on 2014-11-26, closed on 2014-11-26, relates #6444 (closed))