Why can't I push the image to the registry ?

Issue

• BUILD LOG:

I1001 05:15:32.025816       1 sti.go:251] Successfully built 172.x.x.x:5000/test/test:latest
I1001 05:15:32.044147       1 cleanup.go:23] Removing temporary directory /tmp/sti478141593
I1001 05:15:32.044185       1 fs.go:99] Removing directory '/tmp/sti478141593'
I1001 05:15:32.045850       1 sti.go:146] Using provided push secret for pushing 172.30.178.159:5000/test/test:latest image
I1001 05:15:32.045863       1 sti.go:149] Pushing 172.x.x.x:5000/test/test:latest image ...
E1001 05:15:35.930820       1 dockerutil.go:50] push for image 172.x.x.x:5000/test/test:latest failed, will retry in 10s ...
E1001 05:15:49.603965       1 dockerutil.go:50] push for image 172.x.x.x:5000/test/test:latest failed, will retry in 10s ...
F1001 05:16:06.096877       1 builder.go:65] Build error: Failed to push image: Error pushing to registry: Server error: unexpected 500 response status trying to initiate upload of test/test

• DOCKER REGISTRY :

10.x.x.x - - [01/Oct/2015:05:15:59 -0400] "GET /v2/ HTTP/1.1" 401 114 "" "docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64"
10.x.x.x - - [01/Oct/2015:05:15:59 -0400] "GET /v2/ HTTP/1.1" 401 114 "" "docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64"
time="2015-10-01T05:15:59-04:00" level=debug msg="authorizing request" http.request.host="172.x.x.x:5000" http.request.id=e1642490-3c86-4d0b-801a-e91ff526fe80 http.request.method=GET http.request.remoteaddr="10.x.x.x:49635" http.request.uri="/v2/" http.request.useragent="docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64" instance.id=9378ef99-70b9-450e-a5ef-23c7467f5f15 
time="2015-10-01T05:15:59-04:00" level=error msg="error authorizing context: authorization header with basic token required" http.request.host="172.x.x.x:5000" http.request.id=e1642490-3c86-4d0b-801a-e91ff526fe80 http.request.method=GET http.request.remoteaddr="10.x.x.x:49635" http.request.uri="/v2/" http.request.useragent="docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64" instance.id=9378ef99-70b9-450e-a5ef-23c7467f5f15 
time="2015-10-01T05:15:59-04:00" level=info msg="response completed" http.request.host="172.x.x.x:5000" http.request.id=e1642490-3c86-4d0b-801a-e91ff526fe80 http.request.method=GET http.request.remoteaddr="10.x.x.x:49635" http.request.uri="/v2/" http.request.useragent="docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64" http.response.contenttype="application/json; charset=utf-8" http.response.duration=1.595089ms http.response.written=0 instance.id=9378ef99-70b9-450e-a5ef-23c7467f5f15 
time="2015-10-01T05:15:59-04:00" level=debug msg="authorizing request" http.request.host="172.30.178.159:5000" http.request.id=2ca8c28c-4689-46fa-8dcb-1c0dcaa3c438 http.request.method=POST http.request.remoteaddr="10.x.x.x:49637" http.request.uri="/v2/test/test/blobs/uploads/" http.request.useragent="docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64" instance.id=9378ef99-70b9-450e-a5ef-23c7467f5f15 vars.name="test/test" 
time="2015-10-01T05:15:59-04:00" level=debug msg="OpenShift auth: checking for access to repository:test/test:pull" 
time="2015-10-01T05:16:05-04:00" level=debug msg="OpenShift auth: checking for access to repository:test/test:push" 
time="2015-10-01T05:16:06-04:00" level=debug msg="(*layerStore).Upload" http.request.host="172.x.x.x:5000" http.request.id=2ca8c28c-4689-46fa-8dcb-1c0dcaa3c438 http.request.method=POST http.request.remoteaddr="10.x.x.x:49637" http.request.uri="/v2/test/test/blobs/uploads/" http.request.useragent="docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64" instance.id=9378ef99-70b9-450e-a5ef-23c7467f5f15 vars.name="test/test" 
10.x.x.x - - [01/Oct/2015:05:15:59 -0400] "POST /v2/test/test/blobs/uploads/ HTTP/1.1" 500 146 "" "docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64"
time="2015-10-01T05:16:06-04:00" level=info msg=Base.PutContent trace.duration=1.836534ms trace.file="/builddir/build/BUILD/openshift-git-503.7cc6deb/_thirdpartyhacks/src/github.com/docker/distribution/registry/storage/driver/base/base.go" trace.func="github.com/docker/distribution/registry/storage/driver/base.(*Base).PutContent" trace.id=8afbbd5f-2dee-4ec7-b5df-ca56782d467e trace.line=67 
time="2015-10-01T05:16:06-04:00" level=info msg="response completed" http.request.host="172.x.x.x:5000" http.request.id=2ca8c28c-4689-46fa-8dcb-1c0dcaa3c438 http.request.method=POST http.request.remoteaddr="10.x.x.x:49637" http.request.uri="/v2/test/test/blobs/uploads/" http.request.useragent="docker/1.7.1 go/go1.4.2 kernel/3.10.0-229.14.1.el7.x86_64 os/linux arch/amd64" http.response.contenttype="application/json; charset=utf-8" http.response.duration=6.201461766s http.response.written=0 instance.id=9378ef99-70b9-450e-a5ef-23c7467f5f15