Auto merge of #58702 - taiki-e:libcore-2018, r=Centril

libcore => 2018

Transitions `libcore` to Rust 2018; cc #58099

r? @Centril

Author: bors

src/libcore/Cargo.toml

@@ -4,6 +4,7 @@ name = "core"
 version = "0.0.0"
 autotests = false
 autobenches = false
+edition = "2018"
 
 [lib]
 name = "core"

src/libcore/alloc.rs

@@ -2,12 +2,12 @@
 
 #![stable(feature = "alloc_module", since = "1.28.0")]
 
-use cmp;
-use fmt;
-use mem;
-use usize;
-use ptr::{self, NonNull};
-use num::NonZeroUsize;
+use crate::cmp;
+use crate::fmt;
+use crate::mem;
+use crate::usize;
+use crate::ptr::{self, NonNull};
+use crate::num::NonZeroUsize;
 
 /// Represents the combination of a starting address and
 /// a total capacity of the returned block.

src/libcore/any.rs

@@ -61,8 +61,8 @@
 
 #![stable(feature = "rust1", since = "1.0.0")]
 
-use fmt;
-use intrinsics;
+use crate::fmt;
+use crate::intrinsics;
 
 ///////////////////////////////////////////////////////////////////////////////
 // Any trait

src/libcore/array.rs

@@ -9,13 +9,13 @@
                       integer constants",
             issue = "27778")]
 
-use borrow::{Borrow, BorrowMut};
-use cmp::Ordering;
-use convert::TryFrom;
-use fmt;
-use hash::{Hash, self};
-use marker::Unsize;
-use slice::{Iter, IterMut};
+use crate::borrow::{Borrow, BorrowMut};
+use crate::cmp::Ordering;
+use crate::convert::TryFrom;
+use crate::fmt;
+use crate::hash::{Hash, self};
+use crate::marker::Unsize;
+use crate::slice::{Iter, IterMut};
 
 /// Utility trait implemented only on arrays of fixed size
 ///

src/libcore/ascii.rs

@@ -11,9 +11,9 @@
 
 #![stable(feature = "core_ascii", since = "1.26.0")]
 
-use fmt;
-use ops::Range;
-use iter::FusedIterator;
+use crate::fmt;
+use crate::ops::Range;
+use crate::iter::FusedIterator;
 
 /// An iterator over the escaped version of a byte.
 ///

src/libcore/benches/lib.rs

@@ -1,7 +1,6 @@
 #![feature(flt2dec)]
 #![feature(test)]
 
-extern crate core;
 extern crate test;
 
 mod any;

src/libcore/cell.rs

@@ -186,12 +186,12 @@
 
 #![stable(feature = "rust1", since = "1.0.0")]
 
-use cmp::Ordering;
-use fmt::{self, Debug, Display};
-use marker::Unsize;
-use mem;
-use ops::{Deref, DerefMut, CoerceUnsized};
-use ptr;
+use crate::cmp::Ordering;
+use crate::fmt::{self, Debug, Display};
+use crate::marker::Unsize;
+use crate::mem;
+use crate::ops::{Deref, DerefMut, CoerceUnsized};
+use crate::ptr;
 
 /// A mutable memory location.
 ///

src/libcore/char/convert.rs

@@ -1,9 +1,10 @@
 //! Character conversions.
 
-use convert::TryFrom;
-use fmt;
-use mem::transmute;
-use str::FromStr;
+use crate::convert::TryFrom;
+use crate::fmt;
+use crate::mem::transmute;
+use crate::str::FromStr;
+
 use super::MAX;
 
 /// Converts a `u32` to a `char`.

src/libcore/char/decode.rs

@@ -1,6 +1,7 @@
 //! UTF-8 and UTF-16 decoding iterators
 
-use fmt;
+use crate::fmt;
+
 use super::from_u32_unchecked;
 
 /// An iterator that decodes UTF-16 encoded code points from an iterator of `u16`s.

src/libcore/char/methods.rs

@@ -1,10 +1,11 @@
 //! impl char {}
 
-use slice;
-use str::from_utf8_unchecked_mut;
+use crate::slice;
+use crate::str::from_utf8_unchecked_mut;
+use crate::unicode::printable::is_printable;
+use crate::unicode::tables::{conversions, derived_property, general_category, property};
+
 use super::*;
-use unicode::printable::is_printable;
-use unicode::tables::{conversions, derived_property, general_category, property};
 
 #[lang = "char"]
 impl char {