strange errors when pull authentication fails

[cgwalters]

Here I have an image in an internal registry, I've replaced all references in the output with ${image}. It is a valid reference that I can pull if i drop the --creds u:p. I'm using that to force on a pull authentication error.

The error resulting is...very strange. What's the (0x1882e00,0xc000a47f40)? And then why do we later think the image is an invalid transport?

$ git describe --tags --always HEAD
v1.1.2-241-gac523cbe
$ ./bin/podman pull --creds u:p ${image}@sha256:bb6a76feac8852eae56a1f8bcdd0febee5f488f39a0c6e37b16d8e56e8e03e1e
WARN[0000] using rootless single mapping into the namespace. This might break some images. Check /etc/subuid and /etc/subgid for adding subids 
Trying to pull docker://${image}@sha256:bb6a76feac8852eae56a1f8bcdd0febee5f488f39a0c6e37b16d8e56e8e03e1e...ERRO[0000] Error pulling image ref //${image}@sha256:bb6a76feac8852eae56a1f8bcdd0febee5f488f39a0c6e37b16d8e56e8e03e1e: Error determining manifest MIME type for docker://${image}@sha256:bb6a76feac8852eae56a1f8bcdd0febee5f488f39a0c6e37b16d8e56e8e03e1e: unable to retrieve auth token: invalid username/password 
Failed

Error: error pulling image "${image}@sha256:bb6a76feac8852eae56a1f8bcdd0febee5f488f39a0c6e37b16d8e56e8e03e1e": Invalid image name "${image}@sha256:bb6a76feac8852eae56a1f8bcdd0febee5f488f39a0c6e37b16d8e56e8e03e1e", unknown transport "${image}@sha256"

[miabbott]

I ran into this pulling from an insecure registry (full registry:port replaced with ${registry})

$ rpm -q podman
podman-1.1.2-1.git0ad9b6b.fc29.x86_64

$ sudo podman pull ${registry}/ubi8
Trying to pull docker://${registry}/ubi8...Failed
(0x1840f00,0xc00041a420)
Error: error pulling image "${registry}/ubi8": Invalid image name "${registry}/ubi8", unknown transport "brew-pulp-docker01.web."

$ sudo podman pull docker://${registry}/ubi8
Trying to pull docker://${registry}/ubi8...Failed
(0x1840f00,0xc00041bba0)

Note in the above error message, the parsing of the registry:port/image specifier seems to break down, as the error message identifies first two portions(brew-pulp-docker01.web) of the full registry name as the transport.

However, if i supplied the --tls=verify=false option, it succeeded:

$ sudo podman pull --tls-verify=false ${registry}/ubi8
Trying to pull docker://${registry}/ubi8...Getting image source signatures
Copying blob 0e403bbe7247 [======================================] 67.6MiB / 67.6MiB
Copying blob 7db10350b227 [======================================] 1.1KiB / 1.1KiB
Copying config af3da4479f [======================================] 4.4KiB / 4.4KiB
Writing manifest to image destination
Storing signatures
af3da4479fde937626dccfad5512acfd064123e2427c911e9824e319958325c4

[giuseppe]

fixed as part of: #2911