std: Rename io/path features with old_ prefix

This commit renames the features for the `std::old_io` and `std::old_path`
modules to `old_io` and `old_path` to help facilitate migration to the new APIs.

This is a breaking change as crates which mention the old feature names now need
to be renamed to use the new feature names.

[breaking-change]

18 files changed, 36 insertions, 37 deletions

diff --git a/src/compiletest/compiletest.rs b/src/compiletest/compiletest.rs
index 6b6251a96c9..df94f7613eb 100644
--- a/src/compiletest/compiletest.rs
+++ b/src/compiletest/compiletest.rs
@@ -13,8 +13,8 @@
 #![feature(box_syntax)]
 #![feature(collections)]
 #![feature(int_uint)]
-#![feature(io)]
-#![feature(path)]
+#![feature(old_io)]
+#![feature(old_path)]
 #![feature(rustc_private)]
 #![feature(unboxed_closures)]
 #![feature(std_misc)]
diff --git a/src/libgraphviz/lib.rs b/src/libgraphviz/lib.rs
index a1a271bc5ab..230deabee00 100644
--- a/src/libgraphviz/lib.rs
+++ b/src/libgraphviz/lib.rs
@@ -276,7 +276,7 @@
 #![feature(int_uint)]
 #![feature(collections)]
 #![feature(core)]
-#![feature(io)]
+#![feature(old_io)]
 
 use self::LabelText::*;
 
diff --git a/src/liblog/lib.rs b/src/liblog/lib.rs
index 5edb4a96a7d..4dab07acfd2 100644
--- a/src/liblog/lib.rs
+++ b/src/liblog/lib.rs
@@ -171,7 +171,7 @@
 #![feature(box_syntax)]
 #![feature(int_uint)]
 #![feature(core)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(std_misc)]
 #![feature(env)]
 
diff --git a/src/librbml/lib.rs b/src/librbml/lib.rs
index 154dbbdb750..488d5999323 100644
--- a/src/librbml/lib.rs
+++ b/src/librbml/lib.rs
@@ -28,7 +28,7 @@
 #![feature(collections)]
 #![feature(core)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 
diff --git a/src/librustc/lib.rs b/src/librustc/lib.rs
index abf70813d36..fe9a81bb7c9 100644
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@@ -29,10 +29,10 @@
 #![feature(core)]
 #![feature(hash)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(libc)]
 #![feature(env)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(rustc_private)]
diff --git a/src/librustc_back/lib.rs b/src/librustc_back/lib.rs
index 54b3e8f2081..d589b063204 100644
--- a/src/librustc_back/lib.rs
+++ b/src/librustc_back/lib.rs
@@ -35,9 +35,9 @@
 #![feature(core)]
 #![feature(hash)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(os)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(env)]
diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
index 9b8ca398b12..6357a2b115b 100644
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@@ -28,10 +28,10 @@
 #![feature(core)]
 #![feature(env)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(libc)]
 #![feature(os)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(rustc_private)]
diff --git a/src/librustc_llvm/lib.rs b/src/librustc_llvm/lib.rs
index 213e3565362..cc8ec4b40cb 100644
--- a/src/librustc_llvm/lib.rs
+++ b/src/librustc_llvm/lib.rs
@@ -29,7 +29,7 @@
 #![feature(int_uint)]
 #![feature(libc)]
 #![feature(link_args)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(staged_api)]
 #![feature(std_misc)]
 
diff --git a/src/librustc_trans/lib.rs b/src/librustc_trans/lib.rs
index 21557379e3a..4606200d058 100644
--- a/src/librustc_trans/lib.rs
+++ b/src/librustc_trans/lib.rs
@@ -30,10 +30,10 @@
 #![feature(core)]
 #![feature(hash)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(env)]
 #![feature(libc)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(rustc_private)]
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index b09c3f730fc..883f10be3a1 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -25,10 +25,10 @@
 #![feature(env)]
 #![feature(hash)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(libc)]
 #![feature(os)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(std_misc)]
diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 6cada2e5614..853da598ab5 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -29,8 +29,8 @@ Core encoding and decoding interfaces.
 #![feature(collections)]
 #![feature(core)]
 #![feature(int_uint)]
-#![feature(io)]
-#![feature(path)]
+#![feature(old_io)]
+#![feature(old_path)]
 #![feature(hash)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
diff --git a/src/libstd/old_io/mod.rs b/src/libstd/old_io/mod.rs
index 3673f590c0a..d3f31ed6b75 100644
--- a/src/libstd/old_io/mod.rs
+++ b/src/libstd/old_io/mod.rs
@@ -238,7 +238,7 @@
 //! concerned with error handling; instead its caller is responsible for
 //! responding to errors that may occur while attempting to read the numbers.
 
-#![unstable(feature = "io")]
+#![unstable(feature = "old_io")]
 #![deny(unused_must_use)]
 
 pub use self::SeekStyle::*;
diff --git a/src/libstd/old_path/mod.rs b/src/libstd/old_path/mod.rs
index 17cfe1c8297..37de2993c4d 100644
--- a/src/libstd/old_path/mod.rs
+++ b/src/libstd/old_path/mod.rs
@@ -59,7 +59,7 @@
 //! println!("path exists: {}", path.exists());
 //! ```
 
-#![unstable(feature = "path")]
+#![unstable(feature = "old_path")]
 
 use core::marker::Sized;
 use ffi::CString;
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index f4b0c867f42..e8bdcd62b58 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -30,9 +30,9 @@
 #![feature(env)]
 #![feature(hash)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(libc)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(quote, unsafe_destructor)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
diff --git a/src/libterm/lib.rs b/src/libterm/lib.rs
index c4b3d2813af..81534dbe4c4 100644
--- a/src/libterm/lib.rs
+++ b/src/libterm/lib.rs
@@ -54,8 +54,8 @@
 #![feature(box_syntax)]
 #![feature(collections)]
 #![feature(int_uint)]
-#![feature(io)]
-#![feature(path)]
+#![feature(old_io)]
+#![feature(old_path)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(std_misc)]
diff --git a/src/libtest/lib.rs b/src/libtest/lib.rs
index 860ce209d45..0f90fbdfe0f 100644
--- a/src/libtest/lib.rs
+++ b/src/libtest/lib.rs
@@ -39,8 +39,8 @@
 #![feature(env)]
 #![feature(hash)]
 #![feature(int_uint)]
-#![feature(io)]
-#![feature(path)]
+#![feature(old_io)]
+#![feature(old_path)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(std_misc)]
diff --git a/src/rustbook/main.rs b/src/rustbook/main.rs
index a8466465f87..c0e9cac2813 100644
--- a/src/rustbook/main.rs
+++ b/src/rustbook/main.rs
@@ -11,9 +11,9 @@
 #![feature(box_syntax)]
 #![feature(collections)]
 #![feature(core)]
-#![feature(io)]
+#![feature(old_io)]
 #![feature(os)]
-#![feature(path)]
+#![feature(old_path)]
 #![feature(rustdoc)]
 
 extern crate rustdoc;
diff --git a/src/test/compile-fail/lint-uppercase-variables.rs b/src/test/compile-fail/lint-uppercase-variables.rs
index 057b8e3acc6..b68d9dc4645 100644
--- a/src/test/compile-fail/lint-uppercase-variables.rs
+++ b/src/test/compile-fail/lint-uppercase-variables.rs
@@ -12,12 +12,14 @@
 
 #![allow(dead_code)]
 #![deny(non_snake_case)]
-#![feature(path)]
-#![feature(io)]
 
 use std::old_io::File;
 use std::old_io::IoError;
 
+mod foo {
+    pub enum Foo { Foo }
+}
+
 struct Something {
     X: usize //~ ERROR structure field `X` should have a snake case name such as `x`
 }
@@ -30,13 +32,10 @@ fn main() {
     let Test: usize = 0; //~ ERROR variable `Test` should have a snake case name such as `test`
     println!("{}", Test);
 
-    let mut f = File::open(&Path::new("something.txt"));
-    let mut buff = [0u8; 16];
-    match f.read(&mut buff) {
-        Ok(cnt) => println!("read this many bytes: {}", cnt),
-        Err(IoError{ kind: EndOfFile, .. }) => println!("Got end of file: {:?}", EndOfFile),
-//~^ ERROR variable `EndOfFile` should have a snake case name such as `end_of_file`
-//~^^ WARN `EndOfFile` is named the same as one of the variants of the type `std::old_io::IoErrorKind`
+    match foo::Foo::Foo {
+        Foo => {}
+//~^ ERROR variable `Foo` should have a snake case name such as `foo`
+//~^^ WARN `Foo` is named the same as one of the variants of the type `foo::Foo`
     }
 
     test(1);