Issue extracting the release gzipped tarball

[eddieoz]

I had some issues trying to extract the new file on https://github.com/ethereumproject/go-ethereum/releases/tag/v6.0.6

# sudo tar zxvf geth-classic-v6.0.6-linux.tar.gz
tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors

I downloaded the sha256 and verified as also

# sha256sum -c geth-classic-v6.0.6-linux.sha256
geth-classic-v6.0.6-linux.tar.gz: OK

[eddieoz]

As people showed in the channel, it was gzipped twice. Doing a gunzip and then a tar xzf or tar xvf solved and it was able to extract the correct binary.
Probably it is something with the CI or some issue during the building process.

[soc1c]

https://github.com/eth-classic/go-ethereum/blob/development/.circleci/config.yml#L65

I don't see why this should happen.

[soc1c]

Also the sha256sum of the tar.gz mismatches on CI