Auto merge of rust-lang#1128 - emilio:not-yet-type, r=fitzgen

ir: We can't guarantee the type to be in the item map while propagating AlreadyResolved

The item may come from a recursive check down the stack, and as we say there:

> Unchecked because we haven't finished this type yet.

Fixes rust-lang#1127

Auto merge of rust-lang#1126 - emilio:b, r=pepyakin

Minor version bump.

Again, just fixes, and I got FF to build with rust-lang#1124.

Auto merge of rust-lang#1109 - fitzgen:rustfmt-stdout, r=fitzgen

lib: rustfmt output to stdout

*(Recreated + slightly touched up version of rust-lang#1042 + a version bump)*

Simplify the rustfmt and write mechanism.  Use rustfmt generated string to allow writing to stdout or to rustfmt a file.

Auto merge of rust-lang#935 - bradfier:bump, r=emilio

Bump version to 0.30.0

Version bump, primarily to get rust-lang#832 and rust-lang#892 in now that 1.19 is out and untagged unions are usable in stable!

r? @emilio