Reading package lists... Building dependency tree... Reading state information... NOTICE: 'libsaxon-java' packaging is maintained in the 'Svn' version control system at: svn://svn.debian.org/svn/pkg-java/trunk/libsaxon-java Need to get 1,682 kB of source archives. Get:1 http://urika:3142/ftp.debian.org/debian/ sid/main libsaxon-java 1:6.5.5-10 (dsc) [2,231 B] Get:2 http://urika:3142/ftp.debian.org/debian/ sid/main libsaxon-java 1:6.5.5-10 (tar) [1,669 kB] Get:3 http://urika:3142/ftp.debian.org/debian/ sid/main libsaxon-java 1:6.5.5-10 (diff) [10.1 kB] gpgv: keyblock resource `/tmp/.gnupg/trustedkeys.gpg': file open error gpgv: Signature made Wed 15 May 2013 01:28:56 PM UTC using RSA key ID 8AE09345 gpgv: Can't check signature: public key not found dpkg-source: warning: failed to verify signature on ./libsaxon-java_6.5.5-10.dsc dpkg-source: info: extracting libsaxon-java in libsaxon-java-6.5.5 dpkg-source: info: unpacking libsaxon-java_6.5.5.orig.tar.gz dpkg-source: info: unpacking libsaxon-java_6.5.5-10.debian.tar.gz dpkg-source: info: applying uppercase-encoding-names.patch Fetched 1,682 kB in 1s (1,452 kB/s) Reading package lists... Building dependency tree... Reading state information... The following NEW packages will be installed: gcj-native-helper libjdom1-java-doc 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 120 kB of archives. After this operation, 2,648 kB of additional disk space will be used. WARNING: The following packages cannot be authenticated! gcj-native-helper E: There are problems and -y was used without --force-yes E: Failed to process build dependencies Killed old client process Internet Systems Consortium DHCP Client 4.3.2 Copyright 2004-2015 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Listening on LPF/eth0/a6:7c:42:8e:95:22 Sending on LPF/eth0/a6:7c:42:8e:95:22 Sending on Socket/fallback DHCPRELEASE on eth0 to 10.0.3.1 port 67 dpkg-buildpackage: source package libsaxon-java dpkg-buildpackage: source version 1:6.5.5-10 dpkg-buildpackage: source distribution unstable dpkg-buildpackage: source changed by Mathieu Malaterre dpkg-source --before-build libsaxon-java-6.5.5 dpkg-buildpackage: host architecture amd64 dpkg-checkbuilddeps: Unmet build dependencies: gcj-native-helper libjdom1-java-doc dpkg-buildpackage: warning: build dependencies/conflicts unsatisfied; aborting dpkg-buildpackage: warning: (Use -d flag to override.)