fix various typos in doc comments

Author: euclio

src/liballoc/collections/btree/node.rs

@@ -69,7 +69,7 @@ struct LeafNode<K, V> {
 
     /// This node's index into the parent node's `edges` array.
     /// `*node.parent.edges[node.parent_idx]` should be the same thing as `node`.
-    /// This is only guaranteed to be initialized when `parent` is nonnull.
+    /// This is only guaranteed to be initialized when `parent` is non-null.
     parent_idx: MaybeUninit<u16>,
 
     /// The number of keys and values this node stores.

src/liballoc/raw_vec.rs

@@ -44,7 +44,7 @@ use boxed::Box;
 /// This enables you to use capacity growing logic catch the overflows in your length
 /// that might occur with zero-sized types.
 ///
-/// However this means that you need to be careful when roundtripping this type
+/// However this means that you need to be careful when round-tripping this type
 /// with a `Box<[T]>`: `cap()` won't yield the len. However `with_capacity`,
 /// `shrink_to_fit`, and `from_box` will actually set RawVec's private capacity
 /// field. This allows zero-sized types to not be special-cased by consumers of

src/libcore/num/f32.rs

@@ -445,7 +445,7 @@ impl f32 {
     /// signaling NaNs on MIPS are quiet NaNs on x86, and vice-versa.
     ///
     /// Rather than trying to preserve signaling-ness cross-platform, this
-    /// implementation favours preserving the exact bits. This means that
+    /// implementation favors preserving the exact bits. This means that
     /// any payloads encoded in NaNs will be preserved even if the result of
     /// this method is sent over the network from an x86 machine to a MIPS one.
     ///

src/libcore/task/wake.rs

@@ -108,7 +108,7 @@ impl Drop for Waker {
 /// is ready to be run.
 ///
 /// This is similar to the `Waker` type, but cannot be sent across threads.
-/// Task executors can use this type to implement more optimized singlethreaded wakeup
+/// Task executors can use this type to implement more optimized single-threaded wakeup
 /// behavior.
 #[repr(transparent)]
 #[derive(Clone)]

src/libproc_macro/lib.rs

@@ -535,7 +535,7 @@ impl TokenTree {
     }
 }
 
-/// Prints token treee in a form convenient for debugging.
+/// Prints token tree in a form convenient for debugging.
 #[stable(feature = "proc_macro_lib2", since = "1.29.0")]
 impl fmt::Debug for TokenTree {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@@ -730,7 +730,7 @@ impl fmt::Debug for Group {
 
 /// An `Punct` is an single punctuation character like `+`, `-` or `#`.
 ///
-/// Multicharacter operators like `+=` are represented as two instances of `Punct` with different
+/// Multi-character operators like `+=` are represented as two instances of `Punct` with different
 /// forms of `Spacing` returned.
 #[stable(feature = "proc_macro_lib2", since = "1.29.0")]
 #[derive(Clone)]
@@ -788,7 +788,7 @@ impl Punct {
 
     /// Returns the spacing of this punctuation character, indicating whether it's immediately
     /// followed by another `Punct` in the token stream, so they can potentially be combined into
-    /// a multicharacter operator (`Joint`), or it's followed by some other token or whitespace
+    /// a multi-character operator (`Joint`), or it's followed by some other token or whitespace
     /// (`Alone`) so the operator has certainly ended.
     #[stable(feature = "proc_macro_lib2", since = "1.29.0")]
     pub fn spacing(&self) -> Spacing {
@@ -947,7 +947,7 @@ macro_rules! suffixed_int_literals {
         /// This function will create an integer like `1u32` where the integer
         /// value specified is the first part of the token and the integral is
         /// also suffixed at the end.
-        /// Literals created from negative numbers may not survive rountrips through
+        /// Literals created from negative numbers may not survive round-trips through
         /// `TokenStream` or strings and may be broken into two tokens (`-` and positive literal).
         ///
         /// Literals created through this method have the `Span::call_site()`
@@ -1047,7 +1047,7 @@ impl Literal {
 
     /// Creates a new suffixed floating-point literal.
     ///
-    /// This consturctor will create a literal like `1.0f32` where the value
+    /// This constructor will create a literal like `1.0f32` where the value
     /// specified is the preceding part of the token and `f32` is the suffix of
     /// the token. This token will always be inferred to be an `f32` in the
     /// compiler.
@@ -1096,7 +1096,7 @@ impl Literal {
 
     /// Creates a new suffixed floating-point literal.
     ///
-    /// This consturctor will create a literal like `1.0f64` where the value
+    /// This constructor will create a literal like `1.0f64` where the value
     /// specified is the preceding part of the token and `f64` is the suffix of
     /// the token. This token will always be inferred to be an `f64` in the
     /// compiler.

src/librustc/dep_graph/cgu_reuse_tracker.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 //! Some facilities for tracking how codegen-units are reused during incremental
-//! compilition. This is used for incremental compiliation tests and debug
+//! compilation. This is used for incremental compilation tests and debug
 //! output.
 
 use session::Session;

src/librustc/hir/def.rs

@@ -36,7 +36,7 @@ pub enum NonMacroAttrKind {
     Tool,
     /// Single-segment custom attribute registered by a derive macro (`#[serde(default)]`).
     DeriveHelper,
-    /// Single-segment custom attriubte registered by a legacy plugin (`register_attribute`).
+    /// Single-segment custom attribute registered by a legacy plugin (`register_attribute`).
     LegacyPluginHelper,
     /// Single-segment custom attribute not registered in any way (`#[my_attr]`).
     Custom,

src/librustc/infer/canonical/canonicalizer.rs

@@ -10,7 +10,7 @@
 
 //! This module contains the "canonicalizer" itself.
 //!
-//! For an overview of what canonicaliation is and how it fits into
+//! For an overview of what canonicalization is and how it fits into
 //! rustc, check out the [chapter in the rustc guide][c].
 //!
 //! [c]: https://rust-lang-nursery.github.io/rustc-guide/traits/canonicalization.html

src/librustc/infer/canonical/query_response.rs

@@ -556,7 +556,7 @@ impl<'cx, 'gcx, 'tcx> InferCtxt<'cx, 'gcx, 'tcx> {
     }
 
     /// Given two sets of values for the same set of canonical variables, unify them.
-    /// The second set is produced lazilly by supplying indices from the first set.
+    /// The second set is produced lazily by supplying indices from the first set.
     fn unify_canonical_vars(
         &self,
         cause: &ObligationCause<'tcx>,

src/librustc/infer/canonical/substitute.rs

@@ -11,7 +11,7 @@
 //! This module contains code to substitute new values into a
 //! `Canonical<'tcx, T>`.
 //!
-//! For an overview of what canonicaliation is and how it fits into
+//! For an overview of what canonicalization is and how it fits into
 //! rustc, check out the [chapter in the rustc guide][c].
 //!
 //! [c]: https://rust-lang-nursery.github.io/rustc-guide/traits/canonicalization.html