Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that there was an error on your system when
trying to install a particular package. Please execute the following
command, as it will clear your package cache, in a terminal:
sudo apt-get clean
Then try
** Tags removed: need-duplicate-check
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https://bugs.launchpad.net/bugs/1413517
Title:
package thunderbird 1:31.3.0+build1-0ubuntu0.14.10.1 failed to
install/upgrade: cannot copy