--->  Computing dependencies for gnuradio
--->  Dependencies to be installed: uhd libusb xmlto coreutils docbook-xml docbook-xml-4.1.2 docbook-xml-4.2 xmlcatmgr docbook-xml-4.3 docbook-xml-4.4 docbook-xml-4.5 docbook-xml-5.0 docbook-xsl findutils fop getopt libpaper
--->  Installing libusb @1.0.17_0
Error: org.macports.install for port libusb returned: no destroot found at: /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libusb/libusb/work/destroot
Error: Failed to install libusb
Please see the log file for port libusb for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libusb/libusb/main.log
Error: The following dependencies were not installed: uhd libusb xmlto coreutils docbook-xml docbook-xml-4.1.2 docbook-xml-4.2 xmlcatmgr docbook-xml-4.3 docbook-xml-4.4 docbook-xml-4.5 docbook-xml-5.0 docbook-xsl findutils fop getopt libpaper
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port gnuradio failed