Auto merge of #43180 - oli-obk:compiletest, r=alexcrichton

Reduce the usage of features in compiletest and libtest

src/Cargo.lock

@@ -284,6 +284,7 @@ dependencies = [
  "env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

src/libtest/lib.rs

@@ -35,9 +35,7 @@
 
 #![feature(asm)]
 #![feature(libc)]
-#![feature(rustc_private)]
 #![feature(set_stdio)]
-#![feature(staged_api)]
 #![feature(panic_unwind)]
 
 extern crate getopts;

src/tools/compiletest/Cargo.toml

@@ -10,3 +10,4 @@ filetime = "0.1"
 getopts = "0.2"
 log = "0.3"
 rustc-serialize = "0.3"
+libc = "0.2"

src/tools/compiletest/src/main.rs

@@ -10,9 +10,7 @@
 
 #![crate_name = "compiletest"]
 
-#![feature(box_syntax)]
 #![feature(test)]
-#![feature(libc)]
 
 #![deny(warnings)]