Still having this problem.
I tried creating a new ~/.config/deluge/ folder, and only copied over my *.conf files. After this, Deluge would launch and stay open and not crash. However, as soon as I add a torrent, Deluge crashes and proceeds to immediately crash on startup until I clear the ~/.config/deluge/state/ directory.
My target disk is not full and still has 1.1TB free. I tried making new "incoming" and "finished" directories there for Deluge to use, in case there was corruption there, but that didn't fix it. Help?
Code: Select all
13:54:34 [DEBUG ][deluge.core.alertmanager :130 ] session_stats_alert: session stats (293 values): 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 28, 0, 0, 4, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 14, 0, 0, 0, 0, 1, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 2147483647, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
13:54:34 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: session_stats_alert
13:54:35 [DEBUG ][deluge.configmanager :94 ] Getting config: gtk3ui.conf
13:54:35 [DEBUG ][deluge.ui.gtk3.ipcinterface :185 ] Processing args from other process: ['magnet:?xt=urn:btih:16c1eead61f3ef765e59a328944e991dff5109a8&dn=The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf&tr=http://retracker.telecom.by:80/announce&tr=udp://9.rarbg.to:2710/announce&tr=udp://bt.xxx-tracker.com:2710/announce&tr=udp://coppersurfer.tk:6969/announce&tr=udp://eddie4.nl:6969/announce&tr=udp://exodus.desync.com:6969/announce&tr=udp://mgtracker.org:6969/announce&tr=udp://open.stealth.si:80/announce&tr=udp://public.popcorn-tracker.org:6969/announce&tr=udp://retracker.lanta-net.ru:2710/announce&tr=udp://thetracker.org:80/announce&tr=udp://torr.ws:2710/announce&tr=udp://tracker.coppersurfer.tk:6969/announce&tr=udp://tracker.cypherpunks.ru:6969/announce&tr=udp://tracker.internetwarriors.net:1337/announce&tr=udp://tracker.leechers-paradise.org:6969&tr=udp://tracker.mg64.net:6969/announce&tr=udp://tracker.open-internet.nl:6969/announce&tr=udp://tracker.opentrackr.org:1337/announce&tr=udp://tracker.tiny-vps.com:6969/announce&tr=udp://tracker.torrent.eu.org:451/announce&tr=udp://tracker.uw0.xyz:6969/announce&tr=udp://tracker.vanitycore.co:6969/announce']
13:54:35 [DEBUG ][deluge.configmanager :94 ] Getting config: gtk3ui.conf
13:54:35 [DEBUG ][deluge.ui.gtk3.ipcinterface :196 ] arg: magnet:?xt=urn:btih:16c1eead61f3ef765e59a328944e991dff5109a8&dn=The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf&tr=http://retracker.telecom.by:80/announce&tr=udp://9.rarbg.to:2710/announce&tr=udp://bt.xxx-tracker.com:2710/announce&tr=udp://coppersurfer.tk:6969/announce&tr=udp://eddie4.nl:6969/announce&tr=udp://exodus.desync.com:6969/announce&tr=udp://mgtracker.org:6969/announce&tr=udp://open.stealth.si:80/announce&tr=udp://public.popcorn-tracker.org:6969/announce&tr=udp://retracker.lanta-net.ru:2710/announce&tr=udp://thetracker.org:80/announce&tr=udp://torr.ws:2710/announce&tr=udp://tracker.coppersurfer.tk:6969/announce&tr=udp://tracker.cypherpunks.ru:6969/announce&tr=udp://tracker.internetwarriors.net:1337/announce&tr=udp://tracker.leechers-paradise.org:6969&tr=udp://tracker.mg64.net:6969/announce&tr=udp://tracker.open-internet.nl:6969/announce&tr=udp://tracker.opentrackr.org:1337/announce&tr=udp://tracker.tiny-vps.com:6969/announce&tr=udp://tracker.torrent.eu.org:451/announce&tr=udp://tracker.uw0.xyz:6969/announce&tr=udp://tracker.vanitycore.co:6969/announce
13:54:35 [DEBUG ][deluge.ui.gtk3.ipcinterface :207 ] Attempting to add magnet (magnet:?xt=urn:btih:16c1eead61f3ef765e59a328944e991dff5109a8&dn=The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf&tr=http://retracker.telecom.by:80/announce&tr=udp://9.rarbg.to:2710/announce&tr=udp://bt.xxx-tracker.com:2710/announce&tr=udp://coppersurfer.tk:6969/announce&tr=udp://eddie4.nl:6969/announce&tr=udp://exodus.desync.com:6969/announce&tr=udp://mgtracker.org:6969/announce&tr=udp://open.stealth.si:80/announce&tr=udp://public.popcorn-tracker.org:6969/announce&tr=udp://retracker.lanta-net.ru:2710/announce&tr=udp://thetracker.org:80/announce&tr=udp://torr.ws:2710/announce&tr=udp://tracker.coppersurfer.tk:6969/announce&tr=udp://tracker.cypherpunks.ru:6969/announce&tr=udp://tracker.internetwarriors.net:1337/announce&tr=udp://tracker.leechers-paradise.org:6969&tr=udp://tracker.mg64.net:6969/announce&tr=udp://tracker.open-internet.nl:6969/announce&tr=udp://tracker.opentrackr.org:1337/announce&tr=udp://tracker.tiny-vps.com:6969/announce&tr=udp://tracker.torrent.eu.org:451/announce&tr=udp://tracker.uw0.xyz:6969/announce&tr=udp://tracker.vanitycore.co:6969/announce) from external source...
13:54:35 [DEBUG ][deluge.core.alertmanager :118 ] Alerts queued: 5
13:54:35 [DEBUG ][deluge.core.alertmanager :130 ] add_torrent_alert: added torrent: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf
13:54:35 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: add_torrent_alert
13:54:35 [DEBUG ][deluge.core.alertmanager :130 ] torrent_added_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf added
13:54:35 [DEBUG ][deluge.core.alertmanager :130 ] state_changed_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf: state changed to: dl metadata
13:54:35 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: state_changed_alert
13:54:35 [DEBUG ][deluge.core.alertmanager :130 ] tracker_announce_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf (http://retracker.telecom.by:80/announce) sending announce (started)
13:54:35 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: tracker_announce_alert
13:54:35 [DEBUG ][deluge.core.alertmanager :130 ] session_stats_alert: session stats (293 values): 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 29, 0, 0, 4, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 373, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 14, 0, 0, 0, 0, 1, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 2147483647, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
13:54:35 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: session_stats_alert
13:54:35 [WARNING ][deluge.core.torrentmanager :1255] Torrent id not in torrents loading list: '16c1eead61f3ef765e59a328944e991dff5109a8'
13:54:36 [DEBUG ][deluge.ui.gtk3.addtorrentdialog :887 ] on_button_add_clicked
13:54:36 [DEBUG ][deluge.core.core :569 ] Attempting to add by magnet uri: magnet:?xt=urn:btih:16c1eead61f3ef765e59a328944e991dff5109a8&dn=The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf&tr=http://retracker.telecom.by:80/announce&tr=udp://9.rarbg.to:2710/announce&tr=udp://bt.xxx-tracker.com:2710/announce&tr=udp://coppersurfer.tk:6969/announce&tr=udp://eddie4.nl:6969/announce&tr=udp://exodus.desync.com:6969/announce&tr=udp://mgtracker.org:6969/announce&tr=udp://open.stealth.si:80/announce&tr=udp://public.popcorn-tracker.org:6969/announce&tr=udp://retracker.lanta-net.ru:2710/announce&tr=udp://thetracker.org:80/announce&tr=udp://torr.ws:2710/announce&tr=udp://tracker.coppersurfer.tk:6969/announce&tr=udp://tracker.cypherpunks.ru:6969/announce&tr=udp://tracker.internetwarriors.net:1337/announce&tr=udp://tracker.leechers-paradise.org:6969&tr=udp://tracker.mg64.net:6969/announce&tr=udp://tracker.open-internet.nl:6969/announce&tr=udp://tracker.opentrackr.org:1337/announce&tr=udp://tracker.tiny-vps.com:6969/announce&tr=udp://tracker.torrent.eu.org:451/announce&tr=udp://tracker.uw0.xyz:6969/announce&tr=udp://tracker.vanitycore.co:6969/announce
13:54:36 [DEBUG ][deluge.configmanager :94 ] Getting config: core.conf
13:54:36 [DEBUG ][deluge.core.torrentmanager :388 ] remove prefetch magnet from session
13:54:36 [DEBUG ][deluge.ui.gtk3.addtorrentdialog :269 ] magnet metadata for magnet:?xt=urn:btih:16c1eead61f3ef765e59a328944e991dff5109a8&dn=The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf&tr=http://retracker.telecom.by:80/announce&tr=udp://9.rarbg.to:2710/announce&tr=udp://bt.xxx-tracker.com:2710/announce&tr=udp://coppersurfer.tk:6969/announce&tr=udp://eddie4.nl:6969/announce&tr=udp://exodus.desync.com:6969/announce&tr=udp://mgtracker.org:6969/announce&tr=udp://open.stealth.si:80/announce&tr=udp://public.popcorn-tracker.org:6969/announce&tr=udp://retracker.lanta-net.ru:2710/announce&tr=udp://thetracker.org:80/announce&tr=udp://torr.ws:2710/announce&tr=udp://tracker.coppersurfer.tk:6969/announce&tr=udp://tracker.cypherpunks.ru:6969/announce&tr=udp://tracker.internetwarriors.net:1337/announce&tr=udp://tracker.leechers-paradise.org:6969&tr=udp://tracker.mg64.net:6969/announce&tr=udp://tracker.open-internet.nl:6969/announce&tr=udp://tracker.opentrackr.org:1337/announce&tr=udp://tracker.tiny-vps.com:6969/announce&tr=udp://tracker.torrent.eu.org:451/announce&tr=udp://tracker.uw0.xyz:6969/announce&tr=udp://tracker.vanitycore.co:6969/announce (16c1eead61f3ef765e59a328944e991dff5109a8)
13:54:36 [INFO ][deluge.ui.gtk3.addtorrentdialog :278 ] Unable to fetch metadata for magnet: magnet:?xt=urn:btih:16c1eead61f3ef765e59a328944e991dff5109a8&dn=The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf&tr=http://retracker.telecom.by:80/announce&tr=udp://9.rarbg.to:2710/announce&tr=udp://bt.xxx-tracker.com:2710/announce&tr=udp://coppersurfer.tk:6969/announce&tr=udp://eddie4.nl:6969/announce&tr=udp://exodus.desync.com:6969/announce&tr=udp://mgtracker.org:6969/announce&tr=udp://open.stealth.si:80/announce&tr=udp://public.popcorn-tracker.org:6969/announce&tr=udp://retracker.lanta-net.ru:2710/announce&tr=udp://thetracker.org:80/announce&tr=udp://torr.ws:2710/announce&tr=udp://tracker.coppersurfer.tk:6969/announce&tr=udp://tracker.cypherpunks.ru:6969/announce&tr=udp://tracker.internetwarriors.net:1337/announce&tr=udp://tracker.leechers-paradise.org:6969&tr=udp://tracker.mg64.net:6969/announce&tr=udp://tracker.open-internet.nl:6969/announce&tr=udp://tracker.opentrackr.org:1337/announce&tr=udp://tracker.tiny-vps.com:6969/announce&tr=udp://tracker.torrent.eu.org:451/announce&tr=udp://tracker.uw0.xyz:6969/announce&tr=udp://tracker.vanitycore.co:6969/announce
13:54:36 [DEBUG ][deluge.core.torrentmanager :466 ] options: {'add_paused': False, 'auto_managed': True, 'download_location': '/media/scott/9f81e15c-5c50-4e13-a6bd-3117d6b69d13/Torrents/Incomplete', 'max_connections': 206, 'max_download_speed': -1.0, 'max_upload_slots': 9, 'max_upload_speed': -1.0, 'move_completed': True, 'move_completed_path': '/media/scott/9f81e15c-5c50-4e13-a6bd-3117d6b69d13/Torrents/Finished', 'pre_allocate_storage': False, 'prioritize_first_last_pieces': False, 'remove_at_ratio': False, 'sequential_download': False, 'shared': False, 'stop_at_ratio': False, 'stop_ratio': 2.0, 'super_seeding': False, 'file_priorities': [], 'mapped_files': {}, 'name': '', 'owner': 'localclient', 'seed_mode': False}
13:54:36 [DEBUG ][deluge.core.torrent :242 ] Creating torrent object 16c1eead61f3ef765e59a328944e991dff5109a8
13:54:36 [DEBUG ][deluge.configmanager :94 ] Getting config: core.conf
13:54:36 [DEBUG ][deluge.configmanager :94 ] Getting config: core.conf
13:54:36 [DEBUG ][deluge.core.rpcserver :539 ] intevents: {}
13:54:36 [DEBUG ][deluge.core.torrent :669 ] State from lt was: downloading_metadata | Session is paused: False
Torrent state set from "None" to "Paused" (16c1eead61f3ef765e59a328944e991dff5109a8)
13:54:36 [DEBUG ][deluge.core.torrent :287 ] Torrent object created.
13:54:36 [DEBUG ][deluge.core.alertmanager :118 ] Alerts queued: 7
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] session_stats_alert: session stats (293 values): 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 30, 0, 0, 4, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 373, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 17, 0, 0, 0, 0, 2, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 2147483647, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 36, 0, 0, 0, 1, 0, 0
13:54:36 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: session_stats_alert
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] torrent_removed_alert: - removed
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] torrent_delete_failed_alert: - torrent deletion failed: Success
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] cache_flushed_alert: -
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] add_torrent_alert: added torrent: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf
13:54:36 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: add_torrent_alert
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] torrent_added_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf added
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] state_changed_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf: state changed to: dl metadata
13:54:36 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: state_changed_alert
13:54:36 [DEBUG ][deluge.core.rpcserver :539 ] intevents: {}
13:54:36 [DEBUG ][deluge.core.torrentmanager :665 ] Torrent added: 16c1eead61f3ef765e59a328944e991dff5109a8
13:54:36 [INFO ][deluge.core.torrentmanager :672 ] Torrent The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf from user "localclient" added
13:54:36 [DEBUG ][deluge.core.torrentmanager :975 ] Creating the temporary file: /home/scott/.config/deluge/state/torrents.state.tmp
13:54:36 [DEBUG ][deluge.core.torrentmanager :985 ] Creating backup of torrents.state at: /home/scott/.config/deluge/state/torrents.state.bak
13:54:36 [DEBUG ][deluge.core.torrentmanager :995 ] Saving torrents.state to: /home/scott/.config/deluge/state/torrents.state
13:54:36 [WARNING ][deluge.core.torrentmanager :1255] Torrent id not in torrents loading list: '16c1eead61f3ef765e59a328944e991dff5109a8'
13:54:36 [DEBUG ][deluge.core.rpcserver :539 ] intevents: {}
13:54:36 [DEBUG ][deluge.core.torrent :669 ] State from lt was: downloading_metadata | Session is paused: False
Torrent state set from "Paused" to "Downloading" (16c1eead61f3ef765e59a328944e991dff5109a8)
13:54:36 [DEBUG ][deluge.core.alertmanager :118 ] Alerts queued: 3
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] torrent_resumed_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf resumed
13:54:36 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: torrent_resumed_alert
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] tracker_announce_alert: The.Expanse.S04.1080p.AMZN.WEB-DL.DD5.1.H264-Ralf (http://retracker.telecom.by:80/announce) sending announce (started)
13:54:36 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: tracker_announce_alert
13:54:36 [DEBUG ][deluge.core.alertmanager :130 ] state_update_alert: state updates for 1 torrents
13:54:36 [DEBUG ][deluge.core.alertmanager :135 ] Handling alert: state_update_alert
13:54:36 [DEBUG ][deluge.core.torrent :669 ] State from lt was: downloading_metadata | Session is paused: False
Torrent state set from "Downloading" to "Downloading" (16c1eead61f3ef765e59a328944e991dff5109a8)
13:54:36 [DEBUG ][deluge.core.rpcserver :539 ] intevents: {}
13:54:36 [DEBUG ][deluge.core.rpcserver :539 ] intevents: {}
13:54:36 [DEBUG ][deluge.ui.gtk3.torrentview :820 ] on_selection_changed
Segmentation fault (core dumped)