>>> Installing (1 of 1) app-emulation/qemu-4.0.0-r3::gentoo
 * Updating icons cache ...                                                                                                                                                                                                                                               [ ok ]
 * Running udev control --reload for reloading rules and databases ...
root privileges required                                                                                                                                                                                                                                                  [ !! ]
 * Updating icons cache ...                                                                                                                                                                                                                                               [ ok ]
chmod: cannot access '/usr/libexec/qemu-bridge-helper': No such file or directory
 * ERROR: app-emulation/qemu-4.0.0-r3::gentoo failed (postinst phase):
 *   (no error message)
 *
 * Call stack:
 *     ebuild.sh, line  124:  Called pkg_postinst
 *   environment, line 3516:  Called fcaps 'cap_net_admin' '/usr/libexec/qemu-bridge-helper'
 *   environment, line 2178:  Called die
 * The specific snippet of code:
 *               chmod ${caps_mode} "${file}" || die;
 *
 * If you need support, post the output of `emerge --info '=app-emulation/qemu-4.0.0-r3::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-emulation/qemu-4.0.0-r3::gentoo'`.
 * The complete build log is located at '/home/wayne/gentoo/var/tmp/portage/app-emulation/qemu-4.0.0-r3/temp/build.log'.
 * The ebuild environment file is located at '/home/wayne/gentoo/var/tmp/portage/app-emulation/qemu-4.0.0-r3/temp/environment'.
 * Working directory: '/home/wayne/gentoo/var/tmp/portage/app-emulation/qemu-4.0.0-r3/homedir'
 * S: '/home/wayne/gentoo/var/tmp/portage/app-emulation/qemu-4.0.0-r3/work/qemu-4.0.0'
 * FAILED postinst: 1