these 2 derivations will be built:
  /nix/store/v99dbqywyqfcwblksdx7bykylzznyn18-unpack.drv
  /nix/store/q58y0hhrchfjrbb2a93sk1bndp9yylhc-facetimehd-firmware-1.43_5.drv
this path will be fetched (2.7 MiB download, 2.7 MiB unpacked):
  /nix/store/4l6pqyl0x5k2rjynijd6qxzfd91mn5fx-OSXUpd10.11.5.dmg
building '/nix/store/v99dbqywyqfcwblksdx7bykylzznyn18-unpack.drv'
building '/nix/store/q58y0hhrchfjrbb2a93sk1bndp9yylhc-facetimehd-firmware-1.43_5.drv'
facetimehd-firmware-1.43_5> patching sources
facetimehd-firmware-1.43_5> configuring
facetimehd-firmware-1.43_5> no configure script, doing nothing
facetimehd-firmware-1.43_5> building
facetimehd-firmware-1.43_5> cpio: warning: skipped 268752 bytes of junk
facetimehd-firmware-1.43_5> xzcat: /nix/store/4l6pqyl0x5k2rjynijd6qxzfd91mn5fx-OSXUpd10.11.5.dmg: Unexpected end of input
facetimehd-firmware-1.43_5> cpio: premature end of file
facetimehd-firmware-1.43_5> post-installation fixup
facetimehd-firmware-1.43_5> shrinking RPATHs of ELF executables and libraries in /nix/store/hnfbrdw7z1g97jgagm1zr14icv4k08zv-facetimehd-firmware-1.43_5
facetimehd-firmware-1.43_5> patching script interpreter paths in /nix/store/hnfbrdw7z1g97jgagm1zr14icv4k08zv-facetimehd-firmware-1.43_5
facetimehd-firmware-1.43_5> checking for references to /build/ in /nix/store/hnfbrdw7z1g97jgagm1zr14icv4k08zv-facetimehd-firmware-1.43_5...

upload niks3: ok