404 from docker hub for some repos with docker-registry-debug info

[sneumann]

Hi, I hope I got the right issue tracker. The following call works:
docker run --rm rufus/docker-registry-debug info -v "bioconductor/release_base"
and returns information for https://hub.docker.com/r/sneumann/release_base/tags/ :

# Reading user/passwd from env var "USER_CREDS"
# No password provided, disabling auth
# Getting token from https://index.docker.io
# Got registry endpoint from the server: https://registry-1.docker.io
# Got token: signature=8b544...03be,repository="bioconductor/release_base",access=read
- Repository: bioconductor/release_base
- Tags:
    20151218    643209e007c88db1fe67d250d0749abd5badb0f25ea04121ed6f57f91296ae5a
   ...

While this call for my own repository:
docker run --rm rufus/docker-registry-debug info "sneumann/release_base"
for https://hub.docker.com/r/sneumann/release_base/tags/ returns a 404:

# Reading user/passwd from env var "USER_CREDS"
# No password provided, disabling auth
# Getting token from https://index.docker.io
# Got registry endpoint from the server: https://registry-1.docker.io
# Got token: signature=91fae...398,repository="sneumann/release_base",access=read
HTTP Error: 404 NOT FOUND

But I have no problem pulling from there:

sneumann@acryl /tmp $ docker run "sneumann/release_base"
Unable to find image 'sneumann/release_base:latest' locally
latest: Pulling from sneumann/release_base
9cd73496e13f: Already exists 
[...]

Any ideas ? Can I see what the failing URL is ?

Yours, Steffen