### Please describe the problem.

When running 'git annex fsck --from $i --quiet' when $i is a special remote, git annex will report failure to download as 'failed to download file from remote' without telling me which file it failed to download.

### What steps will reproduce the problem?

Just running 'git annex fsck --from remote --quiet' on some special remote with connexion problem

### What version of git-annex are you using? On what operating system?

6.20170101-1+b1 from Debian stretch

### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)

git annex is very efficient to sync my usb key, laptops and servers together.