When trying to connect to a network that is shared via Bluetooth from my Android phone (due to bug #784415) NetworkManager crashes.

Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.2896] device (84:73:03:78:2A:D6): Activation: starting connection 'Le 1s Network' (ff2da45f-b40c-4215-800a-09f743d8b505)
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.2898] audit: op="connection-activate" uuid="ff2da45f-b40c-4215-800a-09f743d8b505" name="Le 1s Network" pid=2561 uid=1000 res
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.2901] device (84:73:03:78:2A:D6): state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.2908] device (84:73:03:78:2A:D6): state change: prepare -> config (reason 'none') [40 50 0]
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.6038] device (84:73:03:78:2A:D6): Activation: (bluetooth) Stage 2 of 5 (Device Configure) successful. Will connect via PAN.
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.6044] device (84:73:03:78:2A:D6): state change: config -> ip-config (reason 'none') [50 70 0]
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.6047] dhcp4 (bnep0): activation: beginning transaction (timeout in 45 seconds)
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: <info>  [1498898795.6072] dhcp4 (bnep0): dhclient started with pid 21829
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: ((/var/tmp/portage/net-misc/networkmanager-1.8.0/work/NetworkManager-1.8.0/src/platform/nm-platform.c:2650)): assertion '<dropped>' failed
Jul 01 17:46:35 leonard-xps13 NetworkManager[20987]: g_array_sort_with_data: assertion 'array != NULL' failed
Jul 01 17:46:35 leonard-xps13 systemd[1]: NetworkManager.service: Main process exited, code=dumped, status=11/SEGV
Jul 01 17:46:35 leonard-xps13 systemd[1]: NetworkManager.service: Unit entered failed state.
Jul 01 17:46:35 leonard-xps13 systemd[1]: NetworkManager.service: Failed with result 'core-dump'.
Jul 01 17:46:35 leonard-xps13 systemd[1]: NetworkManager.service: Service hold-off time over, scheduling restart.
Jul 01 17:46:35 leonard-xps13 systemd[1]: Stopped Network Manager.
Jul 01 17:46:35 leonard-xps13 systemd[1]: Starting Network Manager...


 * Found these USE flags for net-misc/networkmanager-1.8.0:
 U I
 - - abi_x86_32         : 32-bit (x86) libraries
 - - audit              : Enable support for Linux audit subsystem using sys-process/audit
 + + bluetooth          : Enable Bluetooth Support
 - - connection-sharing : Use net-dns/dnsmasq and net-firewall/iptables for connection sharing
 + + dhclient           : Use dhclient from net-misc/dhcp for getting ip
 - - dhcpcd             : Use net-misc/dhcpcd for getting ip
 - - elogind            : Use sys-auth/elogind for session tracking
 - - gnutls             : Add support for net-libs/gnutls (TLS 1.0 and SSL 3.0 support)
 + + introspection      : Add support for GObject based introspection
 - - json               : Enable JSON validation via dev-libs/jansson in libnm.
 + + modemmanager       : Enable support for mobile broadband devices using net-misc/modemmanager
 + + ncurses            : Add ncurses support (console display library)
 + + nss                : Use dev-libs/nss for cryptography
 - - ofono              : Use net-misc/ofono for telephony support.
 + + ppp                : Enable support for mobile broadband and PPPoE connections using net-dialup/ppp
 - - resolvconf         : Use net-dns/openresolv for managing DNS information
 + + systemd            : Enable use of systemd-specific libraries and features like socket activation or session tracking
 - - teamd              : Enable Teamd control support
 - - test               : Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in make.conf/package.use anymore
 - - vala               : Enable bindings for dev-lang/vala
 + + wext               : Enable support for the deprecated Wext (Wireless Extensions) API; needed for some older drivers (e.g. ipw2200, ndiswrapper)
 + + wifi               : Enable support for wifi and 802.1x security using net-wireless/wpa_supplicant

Downstream bug: https://bugs.gentoo.org/show_bug.cgi?id=623244