compile with stable

[flip111]

Please as soon as 1.30 becomes stable remove the requirement of nightly, because i like to use this package to reduce disk space and don't want to download another version of the compiler to do so.

[matthiaskrgr]

Hmm, it seems that the test feature isn't stable either.
I'll see if I can work around by moving all the tests into a subdir.

[matthiaskrgr]

Ok, turns out the test feature is only needed for benchmarks.
I hid all the benchmark related things behind a feature now to make sure the default build works.

[matthiaskrgr]

The next step is to update rustc_tools_util dependency where I removed the need for the test feature (which is not stabilized) and wait for tool_lints to be come stable, I guess?

[flip111]

Seems right, just to wait for the moment

[matthiaskrgr]

As of 584a774, it is possible to build with beta :)

[naturallymitchell]

1.30 has been released

[matthiaskrgr]

It seems that 1.30 got the stabilization of edition2018 reverted so we need to wait for 1.31 to be released :/
https://internals.rust-lang.org/t/rust-2018-release-schedule-and-extended-beta/8076