Add --travis flag and fix build on nightly rust

[suhr]

This implements #489 and fast-fixes #504.

PS: why &* thing is now explicit? This change is rather surprising for me.

[alexcrichton]

Can you add a test for the --travis flag as well?

[suhr]

I think so (didn't expect that such simple thing actually need a test).

[alexcrichton]

How come this updated Cargo.lock? The update for git2 shouldn't happen just yet.

[suhr]

rust-encoding should be updated because it had the same build problem.

[alexcrichton]

Could you run cargo update encoding just to update that one dependency? (also needs a rebase)

[suhr]

also needs a rebase

Umm... I'm not much familiar with git history rewriting magic.

[alexcrichton]

No worries! You'll probably want to do something like:

$ git fetch origin
$ git rebase origin/master
... fix rebase conflicts, followed by `git rebase --continue`
$ git push -f

[suhr]

I couldn't handle all the git-rebase power, so I fixed everything dirty mercurial way. I hope, this is fine too.

[alexcrichton]

And for future info @suhr, this breakage with rust master was introduced in rust-lang/rust#16917 where Box<Trait> no longer coerces to &Trait