[2017-12-27 17:51:23] DEBUG [util_exec] [4736d40dab6629307f1b07667b4cccd1-0] Starting: pum --verbose --simulate --json -- krb5-locales libk5crypto3 libxcursor1, stdin: ... 2017-12-27 17:51:24 ERROR: W:There is no public key available for the following key IDs: EF0F382A1A7B6500, E:Could not open file /var/lib/apt/lists/ftp.debian.org_debian_dists_jessie-updates_main_binary-amd64_Packages.IndexDiff - open (2: No such file or directory) ... 2017-12-27 17:51:24 ERROR: Exited with returncode 1