these 2 derivations will be built:
  /nix/store/1v16m431p9sh5wrhnrf57ll3pdgjnlhi-tincr-app-0.1.0.drv
  /nix/store/lxr72cwyk5ykk9j8smji2fs3k19qlhgr-android-mesh-check.drv
error: Cannot build '/nix/store/lxr72cwyk5ykk9j8smji2fs3k19qlhgr-android-mesh-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9zsbvj36p687d24b3iwhm4b47gvsmhyl-android-mesh-check
       Last 25 log lines:
       > [DEBUG tincd::net] Got UDP probe request 1408 from phone
       > [DEBUG tincd::net] Sending type 2 probe reply length 1408 to phone
       > [DEBUG tincd::net] Got type 2 UDP probe reply 18 from phone
       > [DEBUG tincd::net] Sending type 2 probe reply length 1408 to phone
       > [DEBUG tincd::net] Sending UDP probe length 18 to phone
       > [DEBUG tincd::net] Got type 2 UDP probe reply 18 from phone
       > [DEBUG tincd::net] ignoring unsolicited udp_rx_len from phone
       > [DEBUG tincd::proto] Ignoring off-path MTU_INFO for phone via phone
       > [DEBUG tincd::net] meta-ack UDP rx 1408 to phone
       > [DEBUG tincd::proto] Aging past requests: deleted 0, left 2
       > [DEBUG tincd::net] Got UDP probe request 18 from phone
       > [DEBUG tincd::net] Sending type 2 probe reply length 18 to phone
       > == logcat ==
       > --------- beginning of main
       > 09-08 10:42:15.123  2220  2677 I tincr   : bundle: 1 host files from http://127.0.0.1:45593/b.tar.gz
       >
       > appops: ACTIVATE_VPN: allow; time=+21s589ms ago
       >  prepared: true
       > 	at io.thalheim.tincr.MeshTest.poll(MeshTest.kt:62)
       > 	at io.thalheim.tincr.MeshTest.joinThenMesh(MeshTest.kt:127)
       >
       > FAILURES!!!
       > Tests run: 2,  Failures: 1
       >
       >
       For full logs, run:
         nix log /nix/store/lxr72cwyk5ykk9j8smji2fs3k19qlhgr-android-mesh-check.drv