Starting download of /gnu/store/8b3z1kzr84xjgzb7vgy9hwksccnkw40z-gtkmm-2.24.5.tar.xz
From http://ftp.belnet.be/ftp.gnome.org/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz...
download failed "http://ftp.belnet.be/ftp.gnome.org/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz" 404 "Not Found"

Starting download of /gnu/store/8b3z1kzr84xjgzb7vgy9hwksccnkw40z-gtkmm-2.24.5.tar.xz
From http://ftp.linux.org.uk/mirrors/ftp.gnome.org/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz...
In procedure connect: Network is unreachable

Starting download of /gnu/store/8b3z1kzr84xjgzb7vgy9hwksccnkw40z-gtkmm-2.24.5.tar.xz
From http://ftp.gnome.org/pub/GNOME/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz...
following redirection to `https://ftp.gnome.org/pub/GNOME/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz'...
following redirection to `https://download.gnome.org/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz'...
following redirection to `https://ftp.fau.de/gnome/sources/gtkmm/2.24/gtkmm-2.24.5.tar.xz'...

 gtkmm-2.24.5.tar.xz  11.5MiB             0B/s 00:00 [                  ]   0.0%
 gtkmm-2.24.5.tar.xz  11.5MiB         1.7MiB/s 00:00 [                  ]   0.5%
 gtkmm-2.24.5.tar.xz  11.5MiB        38.5MiB/s 00:00 [##############    ]  81.2%
 gtkmm-2.24.5.tar.xz  11.5MiB        41.5MiB/s 00:00 [##################] 100.0%