/mnt/tmp/riscv64/tmp/vdr-ttxtsubs.bXP5C1/vdr-ttxtsubs-disk.img: 25285/262144 files (0.2% non-contiguous), 274359/1048576 blocks
resize2fs 1.43.8 (1-Jan-2018)
Resizing the filesystem on /mnt/tmp/riscv64/tmp/vdr-ttxtsubs.bXP5C1/vdr-ttxtsubs-disk.img to 5242880 (4k) blocks.
The filesystem on /mnt/tmp/riscv64/tmp/vdr-ttxtsubs.bXP5C1/vdr-ttxtsubs-disk.img is now 5242880 (4k) blocks long.

[   0.0] Examining the guest ...
libvirt: XML-RPC error : Cannot recv data: Connection reset by peer
virt-customize: error: libguestfs error: could not connect to libvirt (URI 
= qemu:///session): Cannot recv data: Connection reset by peer [code=38 
int1=104]

If reporting bugs, run virt-customize with debugging enabled and include 
the complete output:

  virt-customize -v -x [...]