In some crates, dependencies may be use ssh protocols, cargo build may lead some error like this: Caused by: failed to authenticate when downloading repository attempted ssh-agent authentication, but none of the usernames `git` succeeded Caused by: error authenticating: no auth sock variable; class=Ssh (23)
![Resolve authentication error for ssh:// in Cargo project - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/fb2de5aa17ad5a3ebf72c7cd1c1acda369c20840/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9UmVzb2x2ZSUyMGF1dGhlbnRpY2F0aW9uJTIwZXJyb3IlMjBmb3IlMjBzc2glM0ElMkYlMkYlMjBpbiUyMENhcmdvJTIwcHJvamVjdCZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTU2JnM9NjI1NGJlNGRiZGViMjZlYmRjZTI4MDZiZDQ3NjVlYWM%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBsaXViaW4mdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPThmNjkwN2I2YTdjMjFmZDcxYmNlNWU2N2MxNGEzNTY1%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4g5qCq5byP5Lya56S-Z2FtYmE%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3Df95a6aeb25f72683ae17ed70d66cda6d)