btrfs scrub status /dev/sda1 and / mismatch

[jl451]

sudo btrfs scrub status /dev/sda1
scrub status for 01f4c9d0-c7b2-4465-8fa0-f3190cc50361
        scrub started at Tue Aug 11 18:06:35 2015 and was aborted after 158 seconds
        total bytes scrubbed: 8.14GiB with 0 errors

sudo btrfs scrub status /
scrub status for 01f4c9d0-c7b2-4465-8fa0-f3190cc50361
        scrub started at Tue Aug 11 18:06:35 2015 and finished after 158 seconds
        total bytes scrubbed: 8.14GiB with 0 errors

Scrub was normal finished in real.
And was started by:
sudo btrfs scrub start /dev/sda1
scrub started on /dev/sda1, fsid 01f4c9d0-c7b2-4465-8fa0-f3190cc50361 (pid=2834)

apt-cache policy btrfs-tools
btrfs-tools:
  Installed: 3.17-1.1
  Candidate: 3.17-1.1
  Version table:
 *** 3.17-1.1 0
        500 http://ftp.mtu.ru/pub/ubuntu/archive/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status

uname -a
Linux ... 4.0.2-040002-generic #201505081529 SMP Fri May 8 15:30:28 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
apt-cache policy linux-image-4.0.2-040002-generic
linux-image-4.0.2-040002-generic:
  Installed: 4.0.2-040002.201505081529
  Candidate: 4.0.2-040002.201505081529
  Version table:
 *** 4.0.2-040002.201505081529 0
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: btrfs-tools 3.17-1.1
Uname: Linux 4.0.2-040002-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1.2
Architecture: amd64
Date: Tue Aug 11 18:50:08 2015
EcryptfsInUse: Yes
SourcePackage: btrfs-tools
UpgradeStatus: No upgrade log present (probably fresh install)

[Rolf Leggewie (r0lf)]

Looks identical and thus correct to me. Please explain what you think is wrong here.

[Launchpad Janitor (janitor)]

[Expired for btrfs-tools (Ubuntu) because there has been no activity for 60 days.]