Subject: gnutls: gnutls_handshake() failed: Public key signature verification has failed.

From: David Gauchard <[email-masked]>
Date: Mon, 12 Mar 2018 02:23:15 +0100

Solved:

An older (already installed before transition do devuan) version of librtmp1
(2015-03-15) was incorrectly considered as newer.

Forcing the installation of the latest version (2015-12-23) made the other
one disappear and things working.

# apt-cache policy librtmp1
librtmp1:
  Installed: 2:2.4~20150315.gita107cef9b-dmo1+deb8u2
  Candidate: 2:2.4~20150315.gita107cef9b-dmo1+deb8u2
  Version table:
 *** 2:2.4~20150315.gita107cef9b-dmo1+deb8u2 100
        100 /var/lib/dpkg/status
     2.4+20151223.gitfa8646d.1-1+b1 100
        100 http://auto.mirror.devuan.org/merged ascii/main amd64 Packages

I hope this version comparison bug has no further impact on transition for
other users.