The comments have more information as to why this is done, but the basic idea is
that finding an exported trait is actually a fairly difficult problem. The true
answer lies in whether a trait is ever referenced from another exported method,
and right now this kind of analysis doesn't exist, so the conservative answer of
"yes" is always returned to answer whether a trait is exported.

Closes #11224
Closes #11225

Turns out with an argument of 0 the function always returns immediately!

Closes #11003

#[ author = "Jane Doe" ]; raises "warning: unknown crate attribute"
replace `pkgid` by `crate_id`
add `comment`

Currently any line starting with `#` is filtered from the output,
including line like `#[deriving]`; this patch makes it so lines are only
filtered when followed by a space similar to the current behaviour of
the tutorial/manual tester.

Issue #11048

Hurray trait coercion!

This method is primarily intended to allow for converting a [T, ..N] to
a &mut [T].

* Pass `&ExtCtxt` instead of `@ExtCtxt`.
* Stop passing duplicate parameters around in `expand`.
* Make `ast_fold` methods take `&mut self`.

After these, it should be possible to remove the `@mut` boxes from `ExtCtxt` altogether, though #11167 is doing some of that so I'm holding off on that for now. This will probably conflict with that PR, so I'm guessing that one will have to be rebased on top of the other.

r? @pcwalton

Currently any line starting with `#` is filtered from the output,
including line like `#[deriving]`; this patch makes it so lines are only
filtered when followed by a space similar to the current behaviour of
the tutorial/manual tester.

No longer need to handle GNUEABIHF and hard floats since LLVM should now choose the right default. Fixes #11164.

Turns out when you grab an OS mutex, you need to be careful about when and where
things are scheduled!

I've confirmed that I could fairly reliably get a deadlock (1 in 100 times ish) before this, and I cannot get a deadlock after this (after 1000+ runs).

Closes #11200

Turns out when you grab an OS mutex, you need to be careful about when and where
things are scheduled!

Turns out with an argument of 0 the function always returns immediately!

Closes #11003

This method is primarily intended to allow for converting a [T, ..N] to
a &mut [T].

Uniform the short title of modules provided by libstd, in order to make their roles more explicit when glancing at the index.

#[ author = "Jane Doe" ]; raises "warning: unknown crate attribute"

Some people have requested this, and I think it's quite useful to have
documentation for the compiler libraries. libnative and libgreen are
self-explanatory I think.

I forgot to add this back in after I removed can_resched and then realized I had
to add it back.

Closes #11152

(I removed the `fn main` from the `std::rand` examples to make it consistent with the rest of the codebase.)

`ln_str` caused ICE if `RUST_LOG=rustc::middle::liveness` is given
due to borrow failure.