[Bug 1269058] Re: connect4 always fails to install

[Mike McCracken]

> Even so, I don't know what the story for deleting the packages is, so
I'm not actually sure that scenario is possible.

I just looked, and UDM does try to delete the downloaded package once
the package is successfully post-processed (ie, pkcon returns success) -
so a previous successful install shouldn't have left a package to clash
names with.

Unfortunately UDM's FileDownload::onProcessError sends the actual error
to TRACE, but only emits "COMMAND ERROR", so if a previous install
failed for some reason that might have left a file laying around, all
it'll say is "COMMAND ERROR". I filed a separate UDM bug to log more
errors unconditionally.

Of course, once pkcon fails one time, UDM won't delete the downloaded package and we'll get the renaming again. 
However, we don't have any evidence here why the package failed to install the first time it was downloaded (assuming it wasn't renamed). Jamie, are there any earlier log messages about this package in the UDM log?

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Title:
  connect4 always fails to install

Status in Ubuntu Download Manager:
  Invalid
Status in “click” package in Ubuntu:
  Invalid

Bug description:
  Try to install Connect4 and it fails stating to look in ubuntu-download-manager.log for details. Here are those details:
  2014-01-13 20:56:41,631 - DEBUG - Service registered to com.canonical.applications.Downloader
  2014-01-13 20:56:41,632 - DEBUG - true
  2014-01-13 20:56:41,633 - DEBUG - Owner is:  ":1.116"
  2014-01-13 20:56:41,634 - DEBUG - Factory assigns the Download Uuid.
  2014-01-13 20:56:41,635 - DEBUG - UNCONFINED APP
  2014-01-13 20:56:41,635 - DEBUG - Local path is "/home/phablet/.local/share/ubuntu-download-manager/Downloads"
  2014-01-13 20:56:41,637 - DEBUG - Timer must be stopped because we have 1 downloads.
  2014-01-13 20:56:41,648 - DEBUG - Network is accessible, performing download request
  2014-01-13 20:57:36,272 - DEBUG - "Transaction: Installing files
  "
  2014-01-13 20:57:36,340 - DEBUG - "Status:      Waiting in queue
  "
  2014-01-13 20:57:36,357 - DEBUG - "Status:      Starting
  "
  2014-01-13 20:57:36,388 - DEBUG - "Status:      Loading cache
  "
  2014-01-13 20:57:36,412 - DEBUG - "Percentage:  0
  "
  2014-01-13 20:57:37,356 - DEBUG - "Percentage:  10
  "
  2014-01-13 20:57:45,285 - DEBUG - "Percentage:  100
  "
  2014-01-13 20:57:45,329 - DEBUG - "Percentage:  0
  "
  2014-01-13 20:57:45,417 - DEBUG - "Percentage:  50
  "
  2014-01-13 20:57:45,928 - DEBUG - "Percentage:  100
  "
  2014-01-13 20:57:46,195 - DEBUG - "Status:      Querying
  "
  2014-01-13 20:58:05,567 - DEBUG - "Status:      Running
  "
  2014-01-13 20:58:06,069 - DEBUG - "Transaction: Installing files
  "
  2014-01-13 20:58:06,114 - DEBUG - "Status:      Waiting in queue
  "
  2014-01-13 20:58:06,125 - DEBUG - "Status:      Waiting for authentication
  "
  2014-01-13 20:58:06,158 - DEBUG - "Results:
  "
  2014-01-13 20:58:06,161 - DEBUG - "Fatal error: Failed to obtain authentication.
  "
  2014-01-13 20:58:06,167 - WARNING - Error removing "/home/phablet/.local/share/ubuntu-download-manager/Downloads/com.ubuntu.developer.geelen-bram.connect4_0
  .1.3_unknown.click0710607e6a0245a896cc965f613e687f"
  2014-01-13 20:58:06,168 - DEBUG - virtual void Ubuntu::DownloadManager::Download::emitError(const QString&) "COMMAND ERROR"
  2014-01-13 20:58:06,168 - DEBUG - State is CANCEL || FINISH || ERROR
  2014-01-13 20:58:06,168 - DEBUG - void Ubuntu::DownloadManager::Manager::onDownloadsChanged(QString) "/com/canonical/applications/download/0710607e6a0245a89
  6cc965f613e687f"
  2014-01-13 20:58:06,169 - DEBUG - Timer must be started because we have 0 downloads.
  2014-01-13 20:58:36,292 - DEBUG - Timeout reached, shutdown service.

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