[Bug 1558331] Re: message "The repository is insufficiently signed by key (weak digest)" is poorly worded

[Springbank]

Same bug here:
W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_gnumdk_lollypop_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 8FAD14A04A8E87F23FB5653BDBA501177AA84500 (weak digest)
W: gpgv:/var/lib/apt/lists/repository.spotify.com_dists_stable_InRelease: The repository is insufficiently signed by key BBEBDCB318AD50EC6865090613B00F1FD2C19886 (weak digest)
W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_linrunner_tlp_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 2042F03C5FABD0BA2CED40412B3F92F902D65EFF (weak digest)
W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_mc3man_mpv-tests_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 8E51A6D660CD88D67D65221D90BD7EACED8E640A (weak digest)

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https://bugs.launchpad.net/bugs/1558331

Title:
  message "The repository is insufficiently signed by key  (weak
  digest)" is poorly worded

Status in apt package in Ubuntu:
  Confirmed

Bug description:
  The title pretty much says it all.

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