Auto merge of #58189 - kennytm:rollup, r=kennytm

Rollup of 23 pull requests

Successful merges:

 - #58001 (proc_macro: make `TokenStream::from_streams` pre-allocate its vector.)
 - #58096 (Transition linkchecker to 2018 edition)
 - #58097 (Transition remote test to Rust 2018)
 - #58106 (libfmt_macros => 2018)
 - #58107 (libgraphviz => 2018)
 - #58108 (Add NVPTX target to a build manifest)
 - #58109 (librustc_privacy => 2018)
 - #58112 (libpanic_abort => 2018)
 - #58113 (Transition build-manifest to 2018 edition)
 - #58114 (Transition tidy and unstable-book-gen to 2018 edition)
 - #58116 (Include the span of attributes of the lhs to the span of the assignment expression)
 - #58117 (Transition rustdoc-theme to 2018 edition)
 - #58128 (libunwind => 2018)
 - #58138 (Fix #58101)
 - #58139 (hir: add more HirId methods)
 - #58141 (Remove weasel word in docs for iter's take_while())
 - #58142 (Remove stray FIXME)
 - #58145 (Add #[must_use] to core::task::Poll)
 - #58162 (Add more debugging code to track down appveyor 259 exit code)
 - #58169 (Update contributor name in .mailmap)
 - #58172 (update split docs)
 - #58182 (SGX target: handle empty user buffers correctly)
 - #58186 (Add Rustlings to the doc index)

Failed merges:

r? @ghost

Author: bors

.mailmap

@@ -155,6 +155,7 @@ Matt Brubeck <mbrubeck@limpet.net> <mbrubeck@cs.hmc.edu>
 Matthew Auld <matthew.auld@intel.com>
 Matthew McPherrin <matthew@mcpherrin.ca> <matt@mcpherrin.ca>
 Matthijs Hofstra <thiezz@gmail.com>
+Melody Horn <melody@boringcactus.com> <mathphreak@gmail.com>
 Michael Williams <m.t.williams@live.com>
 Michael Woerister <michaelwoerister@posteo> <michaelwoerister@gmail>
 Mickaël Raybaud-Roig <raybaudroigm@gmail.com> m-r-r <raybaudroigm@gmail.com>

appveyor.yml

@@ -207,7 +207,10 @@ test_script:
   - sh src/ci/init_repo.sh . /c/cache/rustsrc
   - set SRC=.
   - set NO_CCACHE=1
-  - sh src/ci/run.sh
+  # Added this debugging code to try tracking down https://github.com/rust-lang/rust/issues/58160
+  # Replace it with the commented line below after the issue with AppVeyor is fixed
+  - "sh src/ci/run.sh & set ret=%errorlevel% & echo exit code in appveyor.yml: %ret% & exit %ret%"
+#  - sh src/ci/run.sh
 
 on_failure:
   # Dump crash log

src/ci/run.sh

@@ -127,7 +127,13 @@ if [ ! -z "$SCRIPT" ]; then
   set +e
   sh -x -c "$SCRIPT"
   ret=$?
-  echo "script exited with $ret"
+  echo "exit code in src/ci/run.sh: $ret"
+
+  echo "tasklist:"
+  tasklist
+  echo -n "location of sh: "
+  where sh
+
   exit $ret
 else
   do_make() {

src/doc/index.md

@@ -52,6 +52,12 @@ If reading multiple hundreds of pages about a language isn't your style, then
 a lot of words, RBE shows off a bunch of code, and keeps the talking to a
 minimum. It also includes exercises!
 
+## Rustlings
+
+[Rustlings](https://github.com/rust-lang/rustlings) guides you through downloading and setting up the Rust toolchain,
+and teaches you the basics of reading and writing Rust syntax. It's an
+alternative to Rust by Example that works with your own environment.
+
 # Use Rust
 
 Once you've gotten familiar with the language, these resources can help you

src/libcore/iter/traits/iterator.rs

@@ -952,8 +952,7 @@ pub trait Iterator {
     /// ```
     ///
     /// The `3` is no longer there, because it was consumed in order to see if
-    /// the iteration should stop, but wasn't placed back into the iterator or
-    /// some similar thing.
+    /// the iteration should stop, but wasn't placed back into the iterator.
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where

src/libcore/str/mod.rs

@@ -2961,8 +2961,8 @@ impl str {
     /// An iterator over substrings of this string slice, separated by
     /// characters matched by a pattern.
     ///
-    /// The pattern can be a `&str`, [`char`], or a closure that determines the
-    /// split.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     ///
     /// # Iterator behavior
     ///
@@ -3078,8 +3078,8 @@ impl str {
     /// An iterator over substrings of the given string slice, separated by
     /// characters matched by a pattern and yielded in reverse order.
     ///
-    /// The pattern can be a `&str`, [`char`], or a closure that determines the
-    /// split.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     ///
     /// # Iterator behavior
     ///
@@ -3128,8 +3128,8 @@ impl str {
     /// An iterator over substrings of the given string slice, separated by
     /// characters matched by a pattern.
     ///
-    /// The pattern can be a `&str`, [`char`], or a closure that determines the
-    /// split.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     ///
     /// Equivalent to [`split`], except that the trailing substring
     /// is skipped if empty.
@@ -3175,8 +3175,8 @@ impl str {
     /// An iterator over substrings of `self`, separated by characters
     /// matched by a pattern and yielded in reverse order.
     ///
-    /// The pattern can be a simple `&str`, [`char`], or a closure that
-    /// determines the split.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     /// Additional libraries might provide more complex patterns like
     /// regular expressions.
     ///
@@ -3222,8 +3222,8 @@ impl str {
     /// If `n` substrings are returned, the last substring (the `n`th substring)
     /// will contain the remainder of the string.
     ///
-    /// The pattern can be a `&str`, [`char`], or a closure that determines the
-    /// split.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     ///
     /// # Iterator behavior
     ///
@@ -3275,8 +3275,8 @@ impl str {
     /// If `n` substrings are returned, the last substring (the `n`th substring)
     /// will contain the remainder of the string.
     ///
-    /// The pattern can be a `&str`, [`char`], or a closure that
-    /// determines the split.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     ///
     /// # Iterator behavior
     ///
@@ -3319,8 +3319,8 @@ impl str {
     /// An iterator over the disjoint matches of a pattern within the given string
     /// slice.
     ///
-    /// The pattern can be a `&str`, [`char`], or a closure that
-    /// determines if a character matches.
+    /// The pattern can be any type that implements the Pattern trait. Notable
+    /// examples are `&str`, [`char`], and closures that determines the split.
     ///
     /// # Iterator behavior
     ///

src/libcore/task/poll.rs

@@ -7,6 +7,7 @@ use result::Result;
 
 /// Indicates whether a value is available or if the current task has been
 /// scheduled to receive a wakeup instead.
+#[must_use = "this `Poll` may be a `Pending` variant, which should be handled"]
 #[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
 pub enum Poll<T> {
     /// Represents that a value is immediately ready.

src/libfmt_macros/Cargo.toml

@@ -2,6 +2,7 @@
 authors = ["The Rust Project Developers"]
 name = "fmt_macros"
 version = "0.0.0"
+edition = "2018"
 
 [lib]
 name = "fmt_macros"

src/libfmt_macros/lib.rs

@@ -10,14 +10,15 @@
        html_playground_url = "https://play.rust-lang.org/",
        test(attr(deny(warnings))))]
 
-#![feature(nll)]
+#![deny(rust_2018_idioms)]
+
 #![feature(rustc_private)]
 
-pub use self::Piece::*;
-pub use self::Position::*;
-pub use self::Alignment::*;
-pub use self::Flag::*;
-pub use self::Count::*;
+pub use Piece::*;
+pub use Position::*;
+pub use Alignment::*;
+pub use Flag::*;
+pub use Count::*;
 
 use std::str;
 use std::string;

src/libgraphviz/Cargo.toml

@@ -2,6 +2,7 @@
 authors = ["The Rust Project Developers"]
 name = "graphviz"
 version = "0.0.0"
+edition = "2018"
 
 [lib]
 name = "graphviz"