doc/bugs/git-annex_fails_to_parse_external_remotes__39_____34__CHECKPRESENT-SUCCESS__34___response.mdwn

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+### Please describe the problem.
+
+During a git annex fsck --fast --from <someexternalremote>, any CHECKPRESENT-SUCCESS responses are considered failures:
+
+    fsck file 
+      failed to download file from remote
+    failed
+    (recording state in git...)
+    git-annex: fsck: 1 failed
+
+It doesn't appear that the external protocol is being violated in any way; it occurs both with my special external (https://git.encryptio.com/slime/blob/refs/heads/master:/misc/git-annex-remote-slime/main.go) and with the example external remote. Making these dump their IO to stderr shows they're behaving correctly, as far as I can tell.
+
+`git annex testremote` passes on these remotes too, so it's not catching the issue (though it probably should.)
+
+### What steps will reproduce the problem?
+
+With https://git-annex.branchable.com/special_remotes/external/example.sh/ installed as "git-annex-remote-externaltest", this script shows the issue:
+
+[[!format sh """
+#!/bin/sh
+set -e
+
+[ -e "annex-test-dirs/repo/.git/annex/objects" ] && (
+    find "annex-test-dirs/repo/.git/annex/objects" -type f -exec chmod 0644 {} \;
+    find "annex-test-dirs/repo/.git/annex/objects" -type d -exec chmod 0755 {} \;
+)
+
+rm -rf annex-test-dirs
+mkdir -p annex-test-dirs/{repo,data}
+
+cd annex-test-dirs/repo
+git init
+git annex init
+MYPASSWORD=a MYLOGIN=b git annex initremote ext type=external encryption=none externaltype=externaltest directory="$(pwd)/../data"
+
+echo "data" > file
+git annex add file
+git commit -m message
+
+git annex copy --to ext
+
+# this works:
+git annex fsck --from ext
+
+# but this incorrectly fails and marks the file "not present":
+git annex fsck --fast --from ext
+"""]]
+
+### What version of git-annex are you using? On what operating system?
+
+git-annex 5.20150420-gb0ebb23, from the linux standalone tarball, on linux.