Throw error on borg<=1.0.x to avoid missing --log-json arg

[MrDavidMitchell]

Describe the bug
Trying to run my first backup on with Vorta on Linux Mint - Unable to initialize a new repository

To Reproduce

1. Started Vorta as a non-root user - version 0.6.19 ( ./home/my_user/.local/bin/vorta)
2. Repository tab, created a new SSH Key (first time)
3. Initialize New Repository
4. Under Repository Path, I selected an empty folder in the home directory to test backup /home/my_user/test_vorta
5. Entered a password (entered a 9 letter password that I use to log in.)
6. Fails - log shows

019-05-13 11:04:15,280 - vorta.borg.borg_thread - DEBUG - Using VortaSecretStorageKeyring keyring to store passwords.
2019-05-13 11:04:15,280 - asyncio - DEBUG - Using selector: EpollSelector
2019-05-13 11:04:15,288 - root - DEBUG - Found 0 passwords matching repo URL.
2019-05-13 11:04:15,288 - vorta.borg.borg_thread - DEBUG - Password not found in primary keyring. Falling back to VortaDBKeyring.
2019-05-13 11:04:15,389 - vorta.borg.borg_thread - INFO - Running command /usr/bin/borg init --info --log-json --encryption=repokey /home/my_user/test_vorta
2019-05-13 11:04:15,590 - vorta.borg.borg_thread - WARNING - usage: borg [-h] [-V] ...
2019-05-13 11:04:15,590 - vorta.borg.borg_thread - WARNING - borg: error: unrecognized arguments: --log-json

Desktop (please complete the following information):

• OS: Linux Mint 18 Cinnamon 64
• System Python 2.7.12
• installed - Python 3.7.3

Additional context
Using the borg commands I have been able to create a repository, but I would much rather do this through vorta/gui

My apology in advance if I missed a docs or an existing issue. I reviewed open and closed issues, google, etc. prior to posting this.

[ThomasWaldmann]

Can you check your borg version? borg -V (in a terminal).

It somehow looks like you have borg 1.0.x there, but vorta wants 1.1.x.

IIRC, vorta bundles borg, but maybe it prefers a borg installed at OS level (== within your linux distribution). So maybe you just need to get rid of the old borg.

[m3nu]

This could be a new version-dependent case. I'm guessing --log-json was added after 1.0.x.

[ThomasWaldmann]

Yeah, in 1.1.0b4:

https://github.com/borgbackup/borg/blob/1.1-maint/docs/changes.rst#version-110b4-2017-03-27

[MrDavidMitchell]

Thanks guys for responding so quickly! Correct the error occurred with borg 1.0.12

Once I upgraded to the binary version of borg 1.1.9 the problem went away! Thank you! Sorry I missed the version requirements.

For anyone else who runs into this:

1. Eliminate the distribution version, sudo apt purge borg
2. Download the binary version of Borg for your operating system from here: https://github.com/borgbackup/borg/releases (official instructions are in the readme.txt file, eg: https://github.com/borgbackup/borg/releases/download/**1.1.9**/README.txt
3. sudo/root copy and rename the binary, on my filesystem, mv (my_download_location) to /usr/bin/borg
4. set permissions on the file, sudo chmod +rx /usr/bin/borg
5. fire up vorta

[m3nu]

Since we use --log-json for parsing most Borg logs, Vorta should probably refuse to run on 1.0.x Borg versions.

Reopening to provide a clear error message in such a case.

[m3nu]