nix-build testinstall.nix --max-jobs 4 --keep-going
these derivations will be built:
  /opt/ns/nix/store/bm3vw2brcwqp0ldkpnrq48qgcxk0cc30-test-in-vm.drv
building path(s) ‘/opt/ns/nix/store/psyyrdbcynydfb2mkmalqz9p6dxkff8f-test-in-vm’
Formatting '/tmp/nix-build-test-in-vm.drv-0/disk-image.qcow2', fmt=qcow2 size=207405056 backing_file=/opt/ns/nix/store/y57j22bg75i5ydrfin8q5sl7rzkgqmcf-centos7.iso encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16
warning: TCG doesn't support requested feature: CPUID.01H:EDX.vme [bit 1]
+ echo loading kernel modules...
loading kernel modules...
+ cat /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/insmod-list
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/virtio/virtio.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/virtio/virtio_ring.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/virtio/virtio_pci.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/block/virtio_blk.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/virtio/virtio_balloon.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/char/hw_random/rng-core.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/char/hw_random/virtio-rng.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/fs/jbd2/jbd2.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/fs/mbcache.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/lib/crc16.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/fs/ext4/ext4.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/fs/fscache/fscache.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/net/9p/9pnet.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/fs/9p/9p.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/net/9p/9pnet_virtio.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/rtc/rtc-cmos.ko.xz
+ insmod /opt/ns/nix/store/z23mk0pzcl7mcy70mdgvv9yvcbg2p5a3-linux-4.4.31-shrunk/lib/modules/4.4.31/kernel/drivers/block/loop.ko.xz
+ mount -t tmpfs none /dev
+ mknod -m 666 /dev/null c 1 3
+ mknod -m 666 /dev/zero c 1 5
+ mknod -m 666 /dev/random c 1 8
+ mknod -m 666 /dev/urandom c 1 9
+ mknod -m 666 /dev/tty c 5 0
+ mknod -m 666 /dev/ttyS0 c 4 64
+ mknod /dev/rtc c 254 0
+ . /sys/class/block/vda/uevent
+ MAJOR=254
+ MINOR=0
+ DEVNAME=vda
+ DEVTYPE=disk
+ mknod /dev/vda b 254 0
+ ifconfig lo up
+ mkdir /fs
+ test -z 1
+ mount /dev/vda /fs
mount: mounting /dev/vda on /fs failed: Invalid argument
[    2.936652] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000ff00
[    2.936652]
[    2.937128] CPU: 0 PID: 1 Comm: init Not tainted 4.4.31 #1-NixOS
[    2.937128] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014
[    2.937128]  0000000000000000 ffff88001f61be18 ffffffff812cea93 ffffffff8171f800
[    2.937128]  ffff88001f61bea8 ffff88001f61be98 ffffffff811597c8 ffffffff00000010
[    2.937128]  ffff88001f61bea8 ffff88001f61be40 ffffffff811528ce 000000000000ff00
[    2.937128] Call Trace:
[    2.937128]  [<ffffffff812cea93>] dump_stack+0x63/0x90
[    2.937128]  [<ffffffff811597c8>] panic+0xc4/0x1fc
[    2.937128]  [<ffffffff811528ce>] ? perf_event_exit_task+0xbe/0x350
[    2.937128]  [<ffffffff810740a2>] do_exit+0xae2/0xaf0
[    2.937128]  [<ffffffff81074133>] do_group_exit+0x43/0xb0
[    2.937128]  [<ffffffff810741b4>] SyS_exit_group+0x14/0x20
[    2.937128]  [<ffffffff81500cae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[    2.937128] Kernel Offset: disabled
[    2.937128] Rebooting in 1 seconds..Virtual machine didn't produce an exit code.
builder for ‘/opt/ns/nix/store/bm3vw2brcwqp0ldkpnrq48qgcxk0cc30-test-in-vm.drv’ failed with exit code 1
error: build of ‘/opt/ns/nix/store/bm3vw2brcwqp0ldkpnrq48qgcxk0cc30-test-in-vm.drv’ failed