Golang使用带有dep的golang dep

I use the go dep tool version v0.4.1, now when I run dep init it create 2 files as expected , when I open the gopkg.lock I found for example the following

[[projects]]
  name = "github.com/inconshreveable/mousetrap"
  packages = ["."]
  revision = "76626ae9c91c4f2a10f34cad8ce832c93bb75"
  version = "v1.0"

I dont use this im my source code, search it deeply also on vendor, so why it's there, what am I missing here ? if it transitive dep I need to find usage of it in vendor library, isnt it ?

You can visualize dependencies using following the command.

Linux

$ sudo apt-get install graphviz
$ dep status -dot | dot -T png | display

macOS

$ brew install graphviz
$ dep status -dot | dot -T png | open -f -a /Applications/Preview.app

Windows

> choco install graphviz.portable
> dep status -dot | dot -T png -o status.png; start status.png

For the detailed information how to use dep command to show your dependencies, you can find it here