[Bug 1583102] Re: Could not execute 'apt-key' to verify signature (is gnupg installed?)

[Marty Ellis]

My problem was caused by using vagrant.  Vagrant sets the tmp owner to
vagrant:vagrant.  @sgrimm -  I followed your advice and that resolved my
issue.

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Title:
  Could not execute 'apt-key' to verify signature (is gnupg installed?)

Status in apt package in Ubuntu:
  Confirmed

Bug description:
  After upgrading to 16.04 I'm getting this error for all my apt
  sources.

  This seems different to both
  https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1524196 (since I
  don't get the "Couldn't create tempfiles for splitting up
  /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial-
  updates_InRelease" errors) and
  https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1577926 (since apt-
  key run by itself fails too).

  Downgrading to apt=1.0.10.2ubuntu2 fixed the problem so it seems to be
  related to recent changes in apt.

  Thanks!

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