rust-lang/rust — pull request #15289 by aturon (2014-07-01 00:24:46+00:00)
Title: std: set stability to experimental

Earlier commits have established a baseline of `experimental` stability
for all crates under the facade (so their contents are considered
experimental within libstd). Since `experimental` is `allow` by
default, we should use the same baseline stability for libstd itself.