$ apt list --installed libtorrent-rasterbar*
Listing... Done
libtorrent-rasterbar9/disco,now 1.1.13+git20190505.6f1250c653+patched-configure-1ppa1~19.04 amd64 [installed,automatic]
N: There is 1 additional version. Please use the '-a' switch to see it
$ apt list --installed -a libtorrent-rasterbar*
Listing... Done
libtorrent-rasterbar9/disco,now 1.1.13+git20190505.6f1250c653+patched-configure-1ppa1~19.04 amd64 [installed,automatic]
libtorrent-rasterbar9/disco 1.1.11-2 amd64
libtorrent-rasterbar9 is already the newest version (1.1.13+git20191027.909211888e+patched-configure-1ppa1~19.10).
libtorrent-rasterbar9 set to manually installed.
The following packages were automatically installed and are no longer required:
efibootmgr shim
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.