Rustdoc sidebar style change negatively impacts `src` view

[Cldfire]

What it looks like on nightly docs:

The strange color change on the side with the new sidebar style looks kind of tacky (especially at the bottom) and was probably not intended.

Currently on stable docs:

[steveklabnik]

This is also broken on beta, tagging as such.

[wesleywiser]

I'm looking into this. I see three potential options:

1. Make the sidebar white on the src pages. This would look the same as the old styling.
2. Shrink the width of the src view so it doesn't overlap with the sidebar. The sidebar is empty on src pages though so this looks kind of weird. If the sidebar retained its items from the other doc pages, this might look nice.
3. Make the sidebar color and the background of the code block match so there isn't slightly different shades of grey on top of each other.

I'm leaning toward option 1 for now but I think option 2 might be worth considering in the future. Thoughts?

[Cldfire]

While I am certainly not the most qualified to weigh in on this, my thoughts would be that 3 is less than desirable (having a random grey stripe on the left side looks out-of-place regardless of whether the color matches or not), 2 would unnecessarily decrease the usability of src pages by decreasing the amount of horizontal space available to the code, and 1 is likely the best option.

3 would also mean that the code block would have padding on the right side but no padding on the left.

[steveklabnik]

1 seems good

[wesleywiser]

Ok. Option 1 it is!