Turning core files into crash files after the fact is a bit too late in
my case. With Xwayland and gnome-shell both racing to write ~/core I
will still be missing one of them.

------------------------------

journalctl -u apport says:

...
-- Reboot --
Feb 05 12:01:27 haz systemd[1]: Starting LSB: automatic crash report 
generation...
Feb 05 12:01:27 haz apport[740]:  * Starting automatic crash report generation: 
apport
Feb 05 12:01:27 haz apport[740]:    ...done.
Feb 05 12:01:27 haz systemd[1]: Started LSB: automatic crash report generation.

------------------------------

$ cat /var/log/apport.log
ERROR: apport (pid 1657) Mon Feb  5 12:02:48 2018: called for pid 923, signal 
5, core limit 0, dump mode 1
ERROR: apport (pid 1657) Mon Feb  5 12:02:48 2018: executable: 
/usr/bin/gnome-shell (command line "/usr/bin/gnome-shell")
ERROR: apport (pid 1657) Mon Feb  5 12:02:48 2018: gdbus call error: Error: 
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name 
org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 1657) Mon Feb  5 12:02:48 2018: debug: session gdbus call: 
ERROR: apport (pid 1657) Mon Feb  5 12:03:04 2018: wrote report 
/var/crash/_usr_bin_gnome-shell.120.crash
ERROR: apport (pid 1946) Mon Feb  5 12:05:58 2018: another apport instance is 
already running, aborting
ERROR: apport (pid 1941) Mon Feb  5 12:05:55 2018: called for pid 1767, signal 
6, core limit 18446744073709551615, dump mode 1
ERROR: apport (pid 1941) Mon Feb  5 12:05:55 2018: ignoring implausibly big 
core limit, treating as unlimited
ERROR: apport (pid 1941) Mon Feb  5 12:05:55 2018: executable: 
/usr/bin/Xwayland (command line "/usr/bin/Xwayland :0 -rootless -terminate 
-core -listen 4 -listen 5 -displayfd 6")
ERROR: apport (pid 1941) Mon Feb  5 12:05:55 2018: gdbus call error: Error: 
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name 
org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 1941) Mon Feb  5 12:05:55 2018: debug: session gdbus call: 
ERROR: apport (pid 1941) Mon Feb  5 12:05:58 2018: wrote report 
/var/crash/_usr_bin_Xwayland.1000.crash
ERROR: apport (pid 1941) Mon Feb  5 12:05:58 2018: writing core dump to 
/home/dan/core (limit: -1)
ERROR: apport (pid 1941) Mon Feb  5 12:05:59 2018: writing core dump 
/home/dan/core of size 91402240

------------------------------

$ cat /proc/sys/kernel/core_pattern
|/usr/share/apport/apport %p %s %c %d %P


** Changed in: apport (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1746874

Title:
  gnome-shell and Xwayland sometimes leave $HOME/core files (should be
  /var/crash files)

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