[2016-11-28 09:30:02] Startup - updater built Oct  6 2016 17:39:29
Looks like steam didn't shutdown cleanly, scheduling immediate update check
[2016-11-28 09:30:02] Checking for update on startup
[2016-11-28 09:30:02] Checking for available updates...
[2016-11-28 09:30:03] Download complete.
[2016-11-28 09:30:03] uninstalled manifest found in /home/username/.local/share/Steam/package/steam_client_ubuntu12 (1).
[2016-11-28 09:30:03] Found pending update
[2016-11-28 09:30:03] Installing update...
[2016-11-28 09:30:03] Extracting package...
[2016-11-28 09:30:10] Installing update...
[2016-11-28 09:30:10] BCommitUpdatedFiles: failed to create directory ./steam/cached
[2016-11-28 09:30:10] BCommitUpdatedFiles: failed to process ./steam
[2016-11-28 09:30:10] Failed to apply update, reverting...
[2016-11-28 09:30:10] Verifying installation...
[2016-11-28 09:30:10] Performing checksum verification of executable files
[2016-11-28 09:30:10] Unable to read and verify install manifest /home/username/.local/share/Steam/package/steam_client_ubuntu12.installed
[2016-11-28 09:30:10] Verification complete
[2016-11-28 09:30:10] Downloading update...
[2016-11-28 09:30:10] Checking for available updates...
[2016-11-28 09:30:10] Download complete.
[2016-11-28 09:30:10] Extracting package...
[2016-11-28 09:30:17] Installing update...
[2016-11-28 09:30:18] BCommitUpdatedFiles: failed to create directory ./steam/cached
[2016-11-28 09:30:18] BCommitUpdatedFiles: failed to process ./steam
[2016-11-28 09:30:18] Failed to apply update, reverting...
[2016-11-28 09:30:38] Shutdown