structuredAttrs is enabled
copying the boot image /nix/store/sigmasisa3jwk1j7bmpbnrw30df06a6q-syslinux-6.04-pre2-unstable-2019-02-07/share/syslinux/isolinux.bin
xorriso 1.5.8.pl02 : RockRidge filesystem manipulator, libburnia project.

xorriso : NOTE : Environment variable SOURCE_DATE_EPOCH encountered with value 315532800
Drive current: -outdev 'stdio:/nix/store/n005a13lrgbb92j6drm1vnbahbljzf6x-trynixos.iso/iso/trynixos.iso'
Media current: stdio file, overwriteable
Media status : is blank
Media summary: 0 sessions, 0 data blocks, 0 data,  817g free
xorriso : UPDATE :       6 files added in 1 seconds
Added 6 items from file 'pathlist'
xorriso : UPDATE :       6 files added in 1 seconds
xorriso : UPDATE :  63.03% done
ISO image produced: 31705 sectors
Written to medium : 31705 sectors at LBA 0
Writing to 'stdio:/nix/store/n005a13lrgbb92j6drm1vnbahbljzf6x-trynixos.iso/iso/trynixos.iso' completed successfully.