[Bug 1605861] Re: apt-key output should not be parsed (stdout is not a terminal)

[era]

apt-key was changed in Debian Stretch to warn when you attempt to do
something like

    apt-key add <file >/dev/null

or the equivalent pipeline.  The manual page says

COMMANDS
       add filename
(...)
           Note: Instead of using this command a keyring should be placed
directly in the /etc/apt/trusted.gpg.d/ directory with a descriptive name
and either "gpg" or "asc" as file extension.

So, the right thing to do is to copy the file to the right path instead of
calling apt-key add with it.

^ I got the above snippet from the very tangentially related
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851774

** Bug watch added: Debian Bug tracker #851774
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851774

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https://bugs.launchpad.net/bugs/1605861

Title:
   apt-key output should not be parsed (stdout is not a terminal)

Status in software-properties package in Ubuntu:
  Confirmed

Bug description:
  Got that warning logged after registering two ppas and updating them:

  com.ubuntu.SoftwareProperties[2113]: gpg: keyring `/tmp/tmp58u008j4/secring.gpg' created
  com.ubuntu.SoftwareProperties[2113]: gpg: keyring `/tmp/tmp58u008j4/pubring.gpg' created
  com.ubuntu.SoftwareProperties[2113]: gpg: requesting key F59EAE4D from hkp server keyserver.ubuntu.com
  com.ubuntu.SoftwareProperties[2113]: gpg: /tmp/tmp58u008j4/trustdb.gpg: trustdb created
  com.ubuntu.SoftwareProperties[2113]: gpg: key F59EAE4D: public key "Launchpad PPA for NoobsLab" imported
  com.ubuntu.SoftwareProperties[2113]: gpg: no ultimately trusted keys found
  com.ubuntu.SoftwareProperties[2113]: gpg: Total number processed: 1
  com.ubuntu.SoftwareProperties[2113]: gpg:               imported: 1  (RSA: 1)
  com.ubuntu.SoftwareProperties[2113]: Warning: apt-key output should not be parsed (stdout is not a terminal)
  com.ubuntu.SoftwareProperties[2113]: OK
  com.ubuntu.SoftwareProperties[2113]: gpg: keyring `/tmp/tmpjwlat63e/secring.gpg' created
  com.ubuntu.SoftwareProperties[2113]: gpg: keyring `/tmp/tmpjwlat63e/pubring.gpg' created
  com.ubuntu.SoftwareProperties[2113]: gpg: requesting key E2D0EBE9 from hkp server keyserver.ubuntu.com
  com.ubuntu.SoftwareProperties[2113]: gpg: /tmp/tmpjwlat63e/trustdb.gpg: trustdb created
  com.ubuntu.SoftwareProperties[2113]: gpg: key E2D0EBE9: public key "Launchpad PPA for RAVEfinity Project" imported
  com.ubuntu.SoftwareProperties[2113]: gpg: Total number processed: 1
  com.ubuntu.SoftwareProperties[2113]: gpg:               imported: 1  (RSA: 1)
  com.ubuntu.SoftwareProperties[2113]: Warning: apt-key output should not be parsed (stdout is not a terminal)
  com.ubuntu.SoftwareProperties[2113]: OK

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: software-properties-gtk 0.96.24.1
  ProcVersionSignature: Ubuntu 4.6.0-9.11-generic 4.6.4
  Uname: Linux 4.6.0-9-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Jul 23 13:37:35 2016
  PackageArchitecture: all
  SourcePackage: software-properties
  UpgradeStatus: No upgrade log present (probably fresh install)

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