Тестирование 7zip архива - это что за?

$ 7z t Linux.7z  

7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=ru_RU.UTF-8,Utf16=on,HugeFiles=on,64 bits,2 CPUs Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz (1067A),ASM)

Scanning the drive for archives:
1 file, 391251020 bytes (374 MiB)

Testing archive: Linux.7z
--
Path = Linux.7z
Type = 7z
Physical Size = 391251020
Headers Size = 1975
Method = LZMA2:26
Solid = +
Blocks = 1

ERROR: Data Error : KSP_Data/sharedassets0.resource          
ERROR: Data Error : KSP_Data/sharedassets5.resource
ERROR: Data Error : KSP_Data/sharedassets6.resource
ERROR: Data Error : KSP_Data/sharedassets7.resource
ERROR: Data Error : KSP_Data/sharedassets9.resource
ERROR: Data Error : KSP_Data/resources.assets.resS
ERROR: Data Error : KSP_Data/sharedassets0.assets.resS
ERROR: Data Error : KSP_Data/sharedassets10.assets.resS
ERROR: Data Error : KSP_Data/sharedassets12.assets.resS
ERROR: Data Error : KSP_Data/sharedassets13.assets.resS
ERROR: Data Error : KSP_Data/sharedassets14.assets.resS
ERROR: Data Error : KSP_Data/sharedassets15.assets.resS
ERROR: Data Error : KSP_Data/sharedassets16.assets.resS
ERROR: Data Error : KSP_Data/sharedassets17.assets.resS
ERROR: Data Error : KSP_Data/sharedassets2.assets.resS
ERROR: Data Error : KSP_Data/sharedassets3.assets.resS
ERROR: Data Error : KSP_Data/sharedassets4.assets.resS
ERROR: Data Error : KSP_Data/sharedassets5.assets.resS
ERROR: Data Error : KSP_Data/sharedassets6.assets.resS
ERROR: Data Error : KSP_Data/sharedassets7.assets.resS
ERROR: Data Error : KSP_Data/sharedassets8.assets.resS
ERROR: Data Error : KSP_Data/sharedassets9.assets.resS
ERROR: Data Error : KSP.x86
ERROR: Data Error : Launcher.x86
ERROR: Data Error : KSP.x86_64
ERROR: Data Error : Launcher.x86_64
                          
Sub items Errors: 26

Archives with Errors: 1

Sub items Errors: 26

$ 7z t Linux.7z 

7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=ru_RU.UTF-8,Utf16=on,HugeFiles=on,64 bits,2 CPUs Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz (1067A),ASM)

Scanning the drive for archives:
1 file, 391251020 bytes (374 MiB)

Testing archive: Linux.7z
--
Path = Linux.7z
Type = 7z
Physical Size = 391251020
Headers Size = 1975
Method = LZMA2:26
Solid = +
Blocks = 1

Everything is Ok                                             

Folders: 30
Files: 137
Size:       1490578066
Compressed: 391251020