Auto merge of rust-lang#95133 - matthiaskrgr:rollup-4q0u804, r=matthiaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#94749 (remove_dir_all: use fallback implementation on Miri)
 - rust-lang#94948 (Fix diagnostics for `#![feature(deprecated_suggestion)]`)
 - rust-lang#94989 (Add Stream alias for AsyncIterator)
 - rust-lang#95108 (Give more details in `Display` for `hir::Target`)
 - rust-lang#95110 (Provide more useful documentation of conversion methods)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_attr/src/builtin.rs

@@ -758,8 +758,7 @@ where
                                     if sess.is_nightly_build() {
                                         diag.help("add `#![feature(deprecated_suggestion)]` to the crate root");
                                     }
-                                    // FIXME(jhpratt) change this to an actual tracking issue
-                                    diag.note("see #XXX for more details").emit();
+                                    diag.note("see #94785 for more details").emit();
                                 }
 
                                 if !get(mi, &mut suggestion) {
@@ -772,10 +771,10 @@ where
                                     meta.span(),
                                     AttrError::UnknownMetaItem(
                                         pprust::path_to_string(&mi.path),
-                                        if attr.has_name(sym::deprecated) {
-                                            &["since", "note"]
-                                        } else {
+                                        if sess.features_untracked().deprecated_suggestion {
                                             &["since", "note", "suggestion"]
+                                        } else {
+                                            &["since", "note"]
                                         },
                                     ),
                                 );

compiler/rustc_hir/src/target.rs

@@ -86,7 +86,11 @@ impl Display for Target {
                 Target::Statement => "statement",
                 Target::Arm => "match arm",
                 Target::AssocConst => "associated const",
-                Target::Method(_) => "method",
+                Target::Method(kind) => match kind {
+                    MethodKind::Inherent => "inherent method",
+                    MethodKind::Trait { body: false } => "required trait method",
+                    MethodKind::Trait { body: true } => "provided trait method",
+                },
                 Target::AssocTy => "associated type",
                 Target::ForeignFn => "foreign function",
                 Target::ForeignStatic => "foreign static item",

library/core/src/async_iter/async_iter.rs

@@ -12,6 +12,7 @@ use crate::task::{Context, Poll};
 /// [impl]: index.html#implementing-async-iterator
 #[unstable(feature = "async_iterator", issue = "79024")]
 #[must_use = "async iterators do nothing unless polled"]
+#[doc(alias = "Stream")]
 pub trait AsyncIterator {
     /// The type of items yielded by the async iterator.
     type Item;

library/core/src/convert/mod.rs

@@ -154,7 +154,7 @@ pub const fn identity<T>(x: T) -> T {
 #[stable(feature = "rust1", since = "1.0.0")]
 #[cfg_attr(not(test), rustc_diagnostic_item = "AsRef")]
 pub trait AsRef<T: ?Sized> {
-    /// Performs the conversion.
+    /// Converts this type into a shared reference of the (usually inferred) input type.
     #[stable(feature = "rust1", since = "1.0.0")]
     fn as_ref(&self) -> &T;
 }
@@ -196,7 +196,7 @@ pub trait AsRef<T: ?Sized> {
 #[stable(feature = "rust1", since = "1.0.0")]
 #[cfg_attr(not(test), rustc_diagnostic_item = "AsMut")]
 pub trait AsMut<T: ?Sized> {
-    /// Performs the conversion.
+    /// Converts this type into a mutable reference of the (usually inferred) input type.
     #[stable(feature = "rust1", since = "1.0.0")]
     fn as_mut(&mut self) -> &mut T;
 }
@@ -272,7 +272,7 @@ pub trait AsMut<T: ?Sized> {
 #[rustc_diagnostic_item = "Into"]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait Into<T>: Sized {
-    /// Performs the conversion.
+    /// Converts this type into the (usually inferred) input type.
     #[must_use]
     #[stable(feature = "rust1", since = "1.0.0")]
     fn into(self) -> T;
@@ -367,7 +367,7 @@ pub trait Into<T>: Sized {
     note = "to coerce a `{T}` into a `{Self}`, use `&*` as a prefix",
 ))]
 pub trait From<T>: Sized {
-    /// Performs the conversion.
+    /// Converts to this type from the input type.
     #[lang = "from"]
     #[must_use]
     #[stable(feature = "rust1", since = "1.0.0")]

library/std/src/fs.rs

@@ -2049,9 +2049,10 @@ pub fn remove_dir<P: AsRef<Path>>(path: P) -> io::Result<()> {
 ///
 /// [changes]: io#platform-specific-behavior
 ///
-/// On macOS before version 10.10 and REDOX this function is not protected against time-of-check to
-/// time-of-use (TOCTOU) race conditions, and should not be used in security-sensitive code on
-/// those platforms. All other platforms are protected.
+/// On macOS before version 10.10 and REDOX, as well as when running in Miri for any target, this
+/// function is not protected against time-of-check to time-of-use (TOCTOU) race conditions, and
+/// should not be used in security-sensitive code on those platforms. All other platforms are
+/// protected.
 ///
 /// # Errors
 ///

library/std/src/sys/unix/fs.rs

@@ -1517,14 +1517,14 @@ pub fn chroot(dir: &Path) -> io::Result<()> {
 
 pub use remove_dir_impl::remove_dir_all;
 
-// Fallback for REDOX and ESP-IDF
-#[cfg(any(target_os = "redox", target_os = "espidf"))]
+// Fallback for REDOX and ESP-IDF (and Miri)
+#[cfg(any(target_os = "redox", target_os = "espidf", miri))]
 mod remove_dir_impl {
     pub use crate::sys_common::fs::remove_dir_all;
 }
 
 // Modern implementation using openat(), unlinkat() and fdopendir()
-#[cfg(not(any(target_os = "redox", target_os = "espidf")))]
+#[cfg(not(any(target_os = "redox", target_os = "espidf", miri)))]
 mod remove_dir_impl {
     use super::{cstr, lstat, Dir, DirEntry, InnerReadDir, ReadDir};
     use crate::ffi::CStr;

src/test/ui/deprecation/feature-gate-deprecated_suggestion.stderr

@@ -5,7 +5,7 @@ LL | #[deprecated(suggestion = "foo")]
    |              ^^^^^^^^^^^^^^^^^^
    |
    = help: add `#![feature(deprecated_suggestion)]` to the crate root
-   = note: see #XXX for more details
+   = note: see #94785 for more details
 
 error: aborting due to previous error