these 3 derivations will be built:
  /nix/store/yxdladrlmr2knrzx8w9x5j6h9z0xbd0c-helium-appimage-0.21.1.1-fhsenv-rootfs.drv
  /nix/store/rsc5z3ianj6lh5i08j569qqf0yavyxl3-helium-appimage-0.21.1.1-bwrap.drv
  /nix/store/3j29rjv6jy1l8kcnaas2pb8fw77dgzvn-helium-appimage-0.21.1.1.drv
building '/nix/store/yxdladrlmr2knrzx8w9x5j6h9z0xbd0c-helium-appimage-0.21.1.1-fhsenv-rootfs.drv'
helium-appimage-0.21.1.1-fhsenv-rootfs> structuredAttrs is enabled
helium-appimage-0.21.1.1-fhsenv-rootfs> Warning: Schema ?org.gnome.system.locale? has path ?/system/locale/?.  Paths starting with ?/apps/?, ?/desktop/? or ?/system/? are deprecated.
helium-appimage-0.21.1.1-fhsenv-rootfs> Warning: Schema ?org.gnome.system.proxy? has path ?/system/proxy/?.  Paths starting with ?/apps/?, ?/desktop/? or ?/system/? are deprecated.
helium-appimage-0.21.1.1-fhsenv-rootfs> Warning: Schema ?org.gnome.system.proxy.http? has path ?/system/proxy/http/?.  Paths starting with ?/apps/?, ?/desktop/? or ?/system/? are deprecated.
helium-appimage-0.21.1.1-fhsenv-rootfs> Warning: Schema ?org.gnome.system.proxy.https? has path ?/system/proxy/https/?.  Paths starting with ?/apps/?, ?/desktop/? or ?/system/? are deprecated.
helium-appimage-0.21.1.1-fhsenv-rootfs> Warning: Schema ?org.gnome.system.proxy.ftp? has path ?/system/proxy/ftp/?.  Paths starting with ?/apps/?, ?/desktop/? or ?/system/? are deprecated.
helium-appimage-0.21.1.1-fhsenv-rootfs> Warning: Schema ?org.gnome.system.proxy.socks? has path ?/system/proxy/socks/?.  Paths starting with ?/apps/?, ?/desktop/? or ?/system/? are deprecated.
building '/nix/store/rsc5z3ianj6lh5i08j569qqf0yavyxl3-helium-appimage-0.21.1.1-bwrap.drv'
helium-appimage-0.21.1.1-bwrap> structuredAttrs is enabled
building '/nix/store/3j29rjv6jy1l8kcnaas2pb8fw77dgzvn-helium-appimage-0.21.1.1.drv'
helium-appimage-0.21.1.1> structuredAttrs is enabled