gzip: stdin: not in gzip format tar: Error

[lshonin]

Hi everybody, I'm trying chroagh to install an arch chroot on my CB, target I install is just "xorg".
And I get an error just a few packages after getting adhd pack from google.chromiumsource.
Shows gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now

I had googled this error which appears when tar working on some tarball not packing by tar, like tar.xz
But i don't know which package it is working on, so...

Thx for the developers~~~

Packages (4) binutils-2.26-4  libmpc-1.0.3-2  gcc-6.1.1-1.1  pkg-config-0.29.1-1

Total Download Size:    25.64 MiB
Total Installed Size:  107.59 MiB

:: Proceed with installation? [Y/n]
:: Retrieving packages...
 binutils-2.26-4-armv7h                                       4.1 MiB  11.1K/s 06:15 [################################################] 100%
 libmpc-1.0.3-2-armv7h                                       52.7 KiB  34.9K/s 00:02 [################################################] 100%
 gcc-6.1.1-1.1-armv7h                                        21.5 MiB   135K/s 02:43 [################################################] 100%
 pkg-config-0.29.1-1-armv7h                                  30.7 KiB  59.0K/s 00:01 [################################################] 100%
(4/4) checking keys in keyring                                                       [################################################] 100%
(4/4) checking package integrity                                                     [################################################] 100%
(4/4) loading package files                                                          [################################################] 100%
(4/4) checking for file conflicts                                                    [################################################] 100%
(4/4) checking available disk space                                                  [################################################] 100%
:: Processing package changes...
(1/4) installing binutils                                                            [################################################] 100%
(2/4) installing libmpc                                                              [################################################] 100%
(3/4) installing gcc                                                                 [################################################] 100%
(4/4) installing pkg-config                                                          [################################################] 100%
:: Running post-transaction hooks...
(1/2) Updating manpage index...
(2/2) Updating the info directory file...

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
Failed to complete chroot setup.
Unmounting /mnt/stateful_partition/crouton/chroots/arch...