[ERROR LOG] While installing `ripgrep` on RaspberryPi(Raspbian, Jessie)

20170728-error-1.log

pi@RPi-KEINOS:~ $ sudo apt-get install software-properties-common
pi@RPi-KEINOS:~ $ 
pi@RPi-KEINOS:~ $ sudo add-apt-repository ppa:x4121/ripgrep

You are about to add the following PPA to your system:
 PPA to provide Ripgrep for Ubuntu.
This PPA will only contain Ripgrep and its dependencies (if required).

Upstream: https://github.com/BurntSushi/ripgrep
 More info: https://launchpad.net/~x4121/+archive/ubuntu/ripgrep
Press [ENTER] to continue or ctrl-c to cancel adding it

Traceback (most recent call last):
  File "/usr/bin/add-apt-repository", line 167, in <module>
    sp = SoftwareProperties(options=options)
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 105, in __init__
    self.reload_sourceslist()
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 595, in reload_sourceslist
    self.distro.get_sources(self.sourceslist)    
  File "/usr/lib/python3/dist-packages/aptsources/distro.py", line 89, in get_sources
    (self.id, self.codename))
aptsources.distro.NoDistroTemplateException: Error: could not find a distribution template for Raspbian/jessie

pi@RPi-KEINOS:~ $ sudo apt-get update
pi@RPi-KEINOS:~ $ (...omt...)
pi@RPi-KEINOS:~ $ sudo apt-get install ripgrep
パッケージリストを読み込んでいます... 完了
依存関係ツリーを作成しています                
状態情報を読み取っています... 完了
E: パッケージ ripgrep が見つかりません