I'm just getting started and thought I'd give some early feedback. There appears to be a lot more noise in the build logs than usual:

- 88 cases of "deprecation warning"
- chown and chmod errors in the build logs (below)
- lintian error and warning: 
  E: gdm3 source: missing-build-dependency-for-dh_-command dh_autoreconf => dh-autoreconf
  W: gdm3 source: newer-standards-version 3.9.8 (current is 3.9.7)
- chmod/chown in debian/:         WARNING:
  debian/gdm3.postinst:chown -R gdm:gdm /var/lib/gdm3
- /bin/sh as shell in debian/:    WARNING:
  debian/gdm3.prerm:#!/bin/bash
- dh: unable to load addon gnome: Can't locate Debian/Debhelper/Sequence/gnome.pm in @INC (you may need to install the Debian::Debhelper::Sequence::gnome module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.22.1 /usr/local/share/perl/5.22.1 /usr/lib/x86_64-linux-gnu/perl5/5.22 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.22 /usr/share/perl/5.22 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base .) at (eval 13) line 2.

And the chown/chmod errors from the build logs:

if test '!' -d /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3; then \
        /bin/bash /<<PKGBUILDDIR>>/install-sh -d /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3; \
        chmod 0711 /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3; \
        chown root:gdm /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3 || : ; \
fi
chown: invalid group: â<80><98>root:gdmâ<80><99>
if test -n "gdm.service" -a '!' -d /<<PKGBUILDDIR>>/debian/tmp/lib/systemd/system; then \
        /bin/bash /<<PKGBUILDDIR>>/install-sh -d /<<PKGBUILDDIR>>/debian/tmp/lib/systemd/system; \
        chmod 0755 /<<PKGBUILDDIR>>/debian/tmp/lib/systemd/system; \
        chown root:root /<<PKGBUILDDIR>>/debian/tmp/lib/systemd/system || : ; \
        /usr/bin/install -c -m 644 ./gdm.service /<<PKGBUILDDIR>>/debian/tmp/lib/systemd/system/gdm.service; \
fi
if test '!' -d /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3/greeter; then \
        /bin/bash /<<PKGBUILDDIR>>/install-sh -d /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3/greeter; \
        chmod 0755 /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3/greeter; \
        chown gdm:gdm /<<PKGBUILDDIR>>/debian/tmp/var/run/gdm3/greeter || : ; \
fi
chown: invalid user: â<80><98>gdm:gdmâ<80><99>
if test '!' -d /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3; then \
        /bin/bash /<<PKGBUILDDIR>>/install-sh -d /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3; \
        chmod 1770 /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3; \
        chown root:gdm /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3 || : ; \
fi
chown: invalid group: â<80><98>root:gdmâ<80><99>
if test '!' -d /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3/.local/share/applications; then \
        /bin/bash /<<PKGBUILDDIR>>/install-sh -d /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3/.local/share/applications; \
        chmod 0755 /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3/.local/share/applications; \
        chown gdm:gdm /<<PKGBUILDDIR>>/debian/tmp/var/lib/gdm3/.local/share/applications || : ; \
fi
chown: invalid user: â<80><98>gdm:gdmâ<80><99>
if test '!' -d /<<PKGBUILDDIR>>/debian/tmp/var/cache/gdm; then \
        /bin/bash /<<PKGBUILDDIR>>/install-sh -d /<<PKGBUILDDIR>>/debian/tmp/var/cache/gdm; \
        chmod 1755 /<<PKGBUILDDIR>>/debian/tmp/var/cache/gdm; \
        chown root:gdm /<<PKGBUILDDIR>>/debian/tmp/var/cache/gdm || : ; \
fi
chown: invalid group: â<80><98>root:gdmâ<80><99>


Thanks