### Rust Version
* Use the output of `rustc -V`
### Affected Version of clap
* Can be found in Cargo.lock of your project (i.e. `grep clap Cargo.lock`)
### Bug or Feature Request Summary
### Expected Behavior Summary
### Actual Behavior Summary
### Steps to Reproduce the issue
### Sample Code or Link to Sample Code
### Debug output
Compile clap with cargo features `"debug"` such as:
```toml
[dependencies]
clap = { version = "2", features = ["debug"] }
```
<details>
<summary> Debug Output </summary>
<pre>
<code>
Paste Debug Output Here
</code>
</pre>
</details>