在Ubuntu中卸载Heroku CLI已经崩溃了

Question

我使用的是Ubuntu 16.04，我按照说明操作，Uninstalling the Heroku CLI。

sudo apt-get remove heroku 
sudo apt-key del <Heroku's key from 'apt-key list'> 

我没有卸载heroku-toolbelt软件包，因为它没有被找到。 另外/etc/apt/sources.list.d/heroku.list不存在。

问题出现在我做后续sudo apt update和sudo apt dist-upgrade。

Err:7 https://cli-assets.heroku.com/branches/stable/apt ./ InRelease 
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C927EBE00F1B0520 
... 
... 
... 
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://cli-assets.heroku.com/branches/stable/apt ./ InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C927EBE00F1B0520 
W: Failed to fetch https://cli-assets.heroku.com/branches/stable/apt/./InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C927EBE00F1B0520 
W: Some index files failed to download. They have been ignored, or old ones used instead. 

我猜apt-key del打破了容易，但我想完全卸载的Heroku-CLI（其中包括键），因为我不再需要它。

Answer 1

运行所

sudo add-apt-repository -r "deb https://cli-assets.heroku.com/branches/stable/apt ./" 

解决的问题。