trying to fix unimplemented flock under linux

[ghost]

It fixes #3666

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @alexcrichton (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

[alexcrichton]

Thanks @z1mvader! Could you also add a comment probably referencing #3666 as well?

[ghost]

Sure, its already on the first comment

[alexcrichton]

Eh ok, seems ok to me

@bors: r+

[bors]

📌 Commit fb6a98f has been approved by alexcrichton

[bors]

⌛ Testing commit fb6a98f with merge c5679e2...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing c5679e2 to master...