pluralize doc comment verbs and add missing periods

45 files changed, 241 insertions, 241 deletions

diff --git a/src/libstd/ascii.rs b/src/libstd/ascii.rs
index 20ad71a4bf8..a2ba8c4c1ba 100644
--- a/src/libstd/ascii.rs
+++ b/src/libstd/ascii.rs
@@ -23,12 +23,12 @@ use mem;
 #[unstable(feature = "std_misc",
            reason = "would prefer to do this in a more general way")]
 pub trait OwnedAsciiExt {
-    /// Convert the string to ASCII upper case:
+    /// Converts the string to ASCII upper case:
     /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
     /// but non-ASCII letters are unchanged.
     fn into_ascii_uppercase(self) -> Self;
 
-    /// Convert the string to ASCII lower case:
+    /// Converts the string to ASCII lower case:
     /// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
     /// but non-ASCII letters are unchanged.
     fn into_ascii_lowercase(self) -> Self;
@@ -41,7 +41,7 @@ pub trait AsciiExt {
     #[stable(feature = "rust1", since = "1.0.0")]
     type Owned;
 
-    /// Check if within the ASCII range.
+    /// Checks if within the ASCII range.
     ///
     /// # Examples
     ///
@@ -95,7 +95,7 @@ pub trait AsciiExt {
     #[stable(feature = "rust1", since = "1.0.0")]
     fn to_ascii_lowercase(&self) -> Self::Owned;
 
-    /// Check that two strings are an ASCII case-insensitive match.
+    /// Checks that two strings are an ASCII case-insensitive match.
     ///
     /// Same as `to_ascii_lowercase(a) == to_ascii_lowercase(b)`,
     /// but without allocating and copying temporary strings.
@@ -117,7 +117,7 @@ pub trait AsciiExt {
     #[stable(feature = "rust1", since = "1.0.0")]
     fn eq_ignore_ascii_case(&self, other: &Self) -> bool;
 
-    /// Convert this type to its ASCII upper case equivalent in-place.
+    /// Converts this type to its ASCII upper case equivalent in-place.
     ///
     /// See `to_ascii_uppercase` for more information.
     ///
@@ -136,7 +136,7 @@ pub trait AsciiExt {
     #[unstable(feature = "ascii")]
     fn make_ascii_uppercase(&mut self);
 
-    /// Convert this type to its ASCII lower case equivalent in-place.
+    /// Converts this type to its ASCII lower case equivalent in-place.
     ///
     /// See `to_ascii_lowercase` for more information.
     ///
diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index 54a3a055768..e507146bcb3 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -506,7 +506,7 @@ impl<K, V, S> HashMap<K, V, S>
 }
 
 impl<K: Hash + Eq, V> HashMap<K, V, RandomState> {
-    /// Create an empty HashMap.
+    /// Creates an empty HashMap.
     ///
     /// # Examples
     ///
@@ -563,7 +563,7 @@ impl<K, V, S> HashMap<K, V, S>
         }
     }
 
-    /// Create an empty HashMap with space for at least `capacity`
+    /// Creates an empty HashMap with space for at least `capacity`
     /// elements, using `hasher` to hash the keys.
     ///
     /// Warning: `hasher` is normally randomly generated, and
@@ -1596,7 +1596,7 @@ pub struct RandomState {
 #[unstable(feature = "std_misc",
            reason = "hashing an hash maps may be altered")]
 impl RandomState {
-    /// Construct a new `RandomState` that is initialized with random keys.
+    /// Constructs a new `RandomState` that is initialized with random keys.
     #[inline]
     #[allow(deprecated)]
     pub fn new() -> RandomState {
diff --git a/src/libstd/collections/hash/set.rs b/src/libstd/collections/hash/set.rs
index f897d565321..6b0546b1ee7 100644
--- a/src/libstd/collections/hash/set.rs
+++ b/src/libstd/collections/hash/set.rs
@@ -111,7 +111,7 @@ pub struct HashSet<T, S = RandomState> {
 }
 
 impl<T: Hash + Eq> HashSet<T, RandomState> {
-    /// Create an empty HashSet.
+    /// Creates an empty HashSet.
     ///
     /// # Examples
     ///
@@ -125,7 +125,7 @@ impl<T: Hash + Eq> HashSet<T, RandomState> {
         HashSet::with_capacity(INITIAL_CAPACITY)
     }
 
-    /// Create an empty HashSet with space for at least `n` elements in
+    /// Creates an empty HashSet with space for at least `n` elements in
     /// the hash table.
     ///
     /// # Examples
@@ -166,7 +166,7 @@ impl<T, S> HashSet<T, S>
         HashSet::with_capacity_and_hash_state(INITIAL_CAPACITY, hash_state)
     }
 
-    /// Create an empty HashSet with space for at least `capacity`
+    /// Creates an empty HashSet with space for at least `capacity`
     /// elements in the hash table, using `hasher` to hash the keys.
     ///
     /// Warning: `hasher` is normally randomly generated, and
@@ -402,7 +402,7 @@ impl<T, S> HashSet<T, S>
         Union { iter: self.iter().chain(other.difference(self)) }
     }
 
-    /// Return the number of elements in the set
+    /// Returns the number of elements in the set.
     ///
     /// # Examples
     ///
@@ -417,7 +417,7 @@ impl<T, S> HashSet<T, S>
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize { self.map.len() }
 
-    /// Returns true if the set contains no elements
+    /// Returns true if the set contains no elements.
     ///
     /// # Examples
     ///
diff --git a/src/libstd/dynamic_lib.rs b/src/libstd/dynamic_lib.rs
index e76d5460eb0..c69df6435c4 100644
--- a/src/libstd/dynamic_lib.rs
+++ b/src/libstd/dynamic_lib.rs
@@ -105,7 +105,7 @@ impl DynamicLibrary {
         }
     }
 
-    /// Access the value at the symbol of the dynamic library
+    /// Accesses the value at the symbol of the dynamic library.
     pub unsafe fn symbol<T>(&self, symbol: &str) -> Result<*mut T, String> {
         // This function should have a lifetime constraint of 'a on
         // T but that feature is still unimplemented
diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index 931cf46a58f..bcc109a71cb 100644
--- a/src/libstd/env.rs
+++ b/src/libstd/env.rs
@@ -261,7 +261,7 @@ pub fn set_var<K: ?Sized, V: ?Sized>(k: &K, v: &V)
     os_imp::setenv(k.as_ref(), v.as_ref())
 }
 
-/// Remove an environment variable from the environment of the currently running process.
+/// Removes an environment variable from the environment of the currently running process.
 ///
 /// # Examples
 ///
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs
index de91e5f3268..1910530c63a 100644
--- a/src/libstd/ffi/c_str.rs
+++ b/src/libstd/ffi/c_str.rs
@@ -133,7 +133,7 @@ pub struct CStr {
 pub struct NulError(usize, Vec<u8>);
 
 impl CString {
-    /// Create a new C-compatible string from a container of bytes.
+    /// Creates a new C-compatible string from a container of bytes.
     ///
     /// This method will consume the provided data and use the underlying bytes
     /// to construct a new string, ensuring that there is a trailing 0 byte.
@@ -169,7 +169,7 @@ impl CString {
         }
     }
 
-    /// Create a C-compatible string from a byte vector without checking for
+    /// Creates a C-compatible string from a byte vector without checking for
     /// interior 0 bytes.
     ///
     /// This method is equivalent to `from_vec` except that no runtime assertion
@@ -258,7 +258,7 @@ impl From<NulError> for old_io::IoError {
 }
 
 impl CStr {
-    /// Cast a raw C string to a safe C string wrapper.
+    /// Casts a raw C string to a safe C string wrapper.
     ///
     /// This function will cast the provided `ptr` to the `CStr` wrapper which
     /// allows inspection and interoperation of non-owned C strings. This method
@@ -301,7 +301,7 @@ impl CStr {
         mem::transmute(slice::from_raw_parts(ptr, len as usize + 1))
     }
 
-    /// Return the inner pointer to this C string.
+    /// Returns the inner pointer to this C string.
     ///
     /// The returned pointer will be valid for as long as `self` is and points
     /// to a contiguous region of memory terminated with a 0 byte to represent
@@ -311,7 +311,7 @@ impl CStr {
         self.inner.as_ptr()
     }
 
-    /// Convert this C string to a byte slice.
+    /// Converts this C string to a byte slice.
     ///
     /// This function will calculate the length of this string (which normally
     /// requires a linear amount of work to be done) and then return the
@@ -329,7 +329,7 @@ impl CStr {
         &bytes[..bytes.len() - 1]
     }
 
-    /// Convert this C string to a byte slice containing the trailing 0 byte.
+    /// Converts this C string to a byte slice containing the trailing 0 byte.
     ///
     /// This function is the equivalent of `to_bytes` except that it will retain
     /// the trailing nul instead of chopping it off.
diff --git a/src/libstd/ffi/mod.rs b/src/libstd/ffi/mod.rs
index 1b7e913d46c..99becb67a5a 100644
--- a/src/libstd/ffi/mod.rs
+++ b/src/libstd/ffi/mod.rs
@@ -25,6 +25,6 @@ mod os_str;
 /// Freely convertible to an `&OsStr` slice.
 #[unstable(feature = "std_misc")]
 pub trait AsOsStr {
-    /// Convert to an `&OsStr` slice.
+    /// Converts to an `&OsStr` slice.
     fn as_os_str(&self) -> &OsStr;
 }
diff --git a/src/libstd/ffi/os_str.rs b/src/libstd/ffi/os_str.rs
index ab20efe25eb..5e61b29f34c 100644
--- a/src/libstd/ffi/os_str.rs
+++ b/src/libstd/ffi/os_str.rs
@@ -69,7 +69,7 @@ impl OsString {
         OsString { inner: Buf::from_string(String::new()) }
     }
 
-    /// Construct an `OsString` from a byte sequence.
+    /// Constructs an `OsString` from a byte sequence.
     ///
     /// # Platform behavior
     ///
@@ -94,13 +94,13 @@ impl OsString {
         from_bytes_inner(bytes.into())
     }
 
-    /// Convert to an `OsStr` slice.
+    /// Converts to an `OsStr` slice.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn as_os_str(&self) -> &OsStr {
         self
     }
 
-    /// Convert the `OsString` into a `String` if it contains valid Unicode data.
+    /// Converts the `OsString` into a `String` if it contains valid Unicode data.
     ///
     /// On failure, ownership of the original `OsString` is returned.
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -108,7 +108,7 @@ impl OsString {
         self.inner.into_string().map_err(|buf| OsString { inner: buf} )
     }
 
-    /// Extend the string with the given `&OsStr` slice.
+    /// Extends the string with the given `&OsStr` slice.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn push<T: AsRef<OsStr>>(&mut self, s: T) {
         self.inner.push_slice(&s.as_ref().inner)
@@ -221,13 +221,13 @@ impl Hash for OsString {
 }
 
 impl OsStr {
-    /// Coerce into an `OsStr` slice.
+    /// Coerces into an `OsStr` slice.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn new<S: AsRef<OsStr> + ?Sized>(s: &S) -> &OsStr {
         s.as_ref()
     }
 
-    /// Coerce directly from a `&str` slice to a `&OsStr` slice.
+    /// Coerces directly from a `&str` slice to a `&OsStr` slice.
     #[stable(feature = "rust1", since = "1.0.0")]
     #[deprecated(since = "1.0.0",
                  reason = "use `OsStr::new` instead")]
@@ -235,7 +235,7 @@ impl OsStr {
         unsafe { mem::transmute(Slice::from_str(s)) }
     }
 
-    /// Yield a `&str` slice if the `OsStr` is valid unicode.
+    /// Yields a `&str` slice if the `OsStr` is valid unicode.
     ///
     /// This conversion may entail doing a check for UTF-8 validity.
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -243,7 +243,7 @@ impl OsStr {
         self.inner.to_str()
     }
 
-    /// Convert an `OsStr` to a `Cow<str>`.
+    /// Converts an `OsStr` to a `Cow<str>`.
     ///
     /// Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -251,13 +251,13 @@ impl OsStr {
         self.inner.to_string_lossy()
     }
 
-    /// Copy the slice into an owned `OsString`.
+    /// Copies the slice into an owned `OsString`.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn to_os_string(&self) -> OsString {
         OsString { inner: self.inner.to_owned() }
     }
 
-    /// Yield this `OsStr` as a byte slice.
+    /// Yields this `OsStr` as a byte slice.
     ///
     /// # Platform behavior
     ///
@@ -275,7 +275,7 @@ impl OsStr {
         }
     }
 
-    /// Create a `CString` containing this `OsStr` data.
+    /// Creates a `CString` containing this `OsStr` data.
     ///
     /// Fails if the `OsStr` contains interior nulls.
     ///
@@ -287,7 +287,7 @@ impl OsStr {
         self.to_bytes().and_then(|b| CString::new(b).ok())
     }
 
-    /// Get the underlying byte representation.
+    /// Gets the underlying byte representation.
     ///
     /// Note: it is *crucial* that this API is private, to avoid
     /// revealing the internal, platform-specific encodings.
diff --git a/src/libstd/fs.rs b/src/libstd/fs.rs
index 914830d9dcf..cfa711db84d 100644
--- a/src/libstd/fs.rs
+++ b/src/libstd/fs.rs
@@ -171,7 +171,7 @@ impl File {
         OpenOptions::new().read(true).open(path)
     }
 
-    /// Open a file in write-only mode.
+    /// Opens a file in write-only mode.
     ///
     /// This function will create a file if it does not exist,
     /// and will truncate it if it does.
@@ -201,7 +201,7 @@ impl File {
         self.path.as_ref().map(|p| &**p)
     }
 
-    /// Attempt to sync all OS-internal metadata to disk.
+    /// Attempts to sync all OS-internal metadata to disk.
     ///
     /// This function will attempt to ensure that all in-core data reaches the
     /// filesystem before returning.
@@ -362,7 +362,7 @@ impl OpenOptions {
         OpenOptions(fs_imp::OpenOptions::new())
     }
 
-    /// Set the option for read access.
+    /// Sets the option for read access.
     ///
     /// This option, when true, will indicate that the file should be
     /// `read`-able if opened.
@@ -379,7 +379,7 @@ impl OpenOptions {
         self.0.read(read); self
     }
 
-    /// Set the option for write access.
+    /// Sets the option for write access.
     ///
     /// This option, when true, will indicate that the file should be
     /// `write`-able if opened.
@@ -396,7 +396,7 @@ impl OpenOptions {
         self.0.write(write); self
     }
 
-    /// Set the option for the append mode.
+    /// Sets the option for the append mode.
     ///
     /// This option, when true, means that writes will append to a file instead
     /// of overwriting previous contents.
@@ -413,7 +413,7 @@ impl OpenOptions {
         self.0.append(append); self
     }
 
-    /// Set the option for truncating a previous file.
+    /// Sets the option for truncating a previous file.
     ///
     /// If a file is successfully opened with this option set it will truncate
     /// the file to 0 length if it already exists.
@@ -430,7 +430,7 @@ impl OpenOptions {
         self.0.truncate(truncate); self
     }
 
-    /// Set the option for creating a new file.
+    /// Sets the option for creating a new file.
     ///
     /// This option indicates whether a new file will be created if the file
     /// does not yet already exist.
@@ -447,7 +447,7 @@ impl OpenOptions {
         self.0.create(create); self
     }
 
-    /// Open a file at `path` with the options specified by `self`.
+    /// Opens a file at `path` with the options specified by `self`.
     ///
     /// # Errors
     ///
@@ -587,7 +587,7 @@ impl Permissions {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn readonly(&self) -> bool { self.0.readonly() }
 
-    /// Modify the readonly flag for this set of permissions.
+    /// Modifies the readonly flag for this set of permissions.
     ///
     /// This operation does **not** modify the filesystem. To modify the
     /// filesystem use the `fs::set_permissions` function.
@@ -670,7 +670,7 @@ impl DirEntry {
     pub fn path(&self) -> PathBuf { self.0.path() }
 }
 
-/// Remove a file from the underlying filesystem.
+/// Removes a file from the underlying filesystem.
 ///
 /// Note that, just because an unlink call was successful, it is not
 /// guaranteed that a file is immediately deleted (e.g. depending on
@@ -856,7 +856,7 @@ pub fn read_link<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
     fs_imp::readlink(path.as_ref())
 }
 
-/// Create a new, empty directory at the provided path
+/// Creates a new, empty directory at the provided path
 ///
 /// # Errors
 ///
@@ -906,7 +906,7 @@ pub fn create_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
     create_dir(path)
 }
 
-/// Remove an existing, empty directory
+/// Removes an existing, empty directory.
 ///
 /// # Errors
 ///
@@ -1058,7 +1058,7 @@ impl Iterator for WalkDir {
            reason = "the precise set of methods exposed on this trait may \
                      change and some methods may be removed")]
 pub trait PathExt {
-    /// Get information on the file, directory, etc at this path.
+    /// Gets information on the file, directory, etc at this path.
     ///
     /// Consult the `fs::stat` documentation for more info.
     ///
diff --git a/src/libstd/io/cursor.rs b/src/libstd/io/cursor.rs
index 6433c29bb9d..72743106abf 100644
--- a/src/libstd/io/cursor.rs
+++ b/src/libstd/io/cursor.rs
@@ -34,21 +34,21 @@ pub struct Cursor<T> {
 }
 
 impl<T> Cursor<T> {
-    /// Create a new cursor wrapping the provided underlying I/O object.
+    /// Creates a new cursor wrapping the provided underlying I/O object.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn new(inner: T) -> Cursor<T> {
         Cursor { pos: 0, inner: inner }
     }
 
-    /// Consume this cursor, returning the underlying value.
+    /// Consumes this cursor, returning the underlying value.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn into_inner(self) -> T { self.inner }
 
-    /// Get a reference to the underlying value in this cursor.
+    /// Gets a reference to the underlying value in this cursor.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn get_ref(&self) -> &T { &self.inner }
 
-    /// Get a mutable reference to the underlying value in this cursor.
+    /// Gets a mutable reference to the underlying value in this cursor.
     ///
     /// Care should be taken to avoid modifying the internal I/O state of the
     /// underlying value as it may corrupt this cursor's position.
diff --git a/src/libstd/io/error.rs b/src/libstd/io/error.rs
index 7428d0a8e35..a49039b1ec4 100644
--- a/src/libstd/io/error.rs
+++ b/src/libstd/io/error.rs
@@ -191,7 +191,7 @@ impl Error {
         }
     }
 
-    /// Return the corresponding `ErrorKind` for this error.
+    /// Returns the corresponding `ErrorKind` for this error.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn kind(&self) -> ErrorKind {
         match self.repr {
diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index f0f37117ed3..ef836a19461 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -220,14 +220,14 @@ pub trait Read {
         append_to_string(buf, |b| read_to_end(self, b))
     }
 
-    /// Create a "by reference" adaptor for this instance of `Read`.
+    /// Creates a "by reference" adaptor for this instance of `Read`.
     ///
     /// The returned adaptor also implements `Read` and will simply borrow this
     /// current reader.
     #[stable(feature = "rust1", since = "1.0.0")]
     fn by_ref(&mut self) -> &mut Self where Self: Sized { self }
 
-    /// Transform this `Read` instance to an `Iterator` over its bytes.
+    /// Transforms this `Read` instance to an `Iterator` over its bytes.
     ///
     /// The returned type implements `Iterator` where the `Item` is `Result<u8,
     /// R::Err>`.  The yielded item is `Ok` if a byte was successfully read and
@@ -238,7 +238,7 @@ pub trait Read {
         Bytes { inner: self }
     }
 
-    /// Transform this `Read` instance to an `Iterator` over `char`s.
+    /// Transforms this `Read` instance to an `Iterator` over `char`s.
     ///
     /// This adaptor will attempt to interpret this reader as an UTF-8 encoded
     /// sequence of characters. The returned iterator will return `None` once
@@ -255,7 +255,7 @@ pub trait Read {
         Chars { inner: self }
     }
 
-    /// Create an adaptor which will chain this stream with another.
+    /// Creates an adaptor which will chain this stream with another.
     ///
     /// The returned `Read` instance will first read all bytes from this object
     /// until EOF is encountered. Afterwards the output is equivalent to the
@@ -265,7 +265,7 @@ pub trait Read {
         Chain { first: self, second: next, done_first: false }
     }
 
-    /// Create an adaptor which will read at most `limit` bytes from it.
+    /// Creates an adaptor which will read at most `limit` bytes from it.
     ///
     /// This function returns a new instance of `Read` which will read at most
     /// `limit` bytes, after which it will always return EOF (`Ok(0)`). Any
@@ -406,7 +406,7 @@ pub trait Write {
         }
     }
 
-    /// Create a "by reference" adaptor for this instance of `Write`.
+    /// Creates a "by reference" adaptor for this instance of `Write`.
     ///
     /// The returned adaptor also implements `Write` and will simply borrow this
     /// current writer.
diff --git a/src/libstd/io/stdio.rs b/src/libstd/io/stdio.rs
index 2850d92e34d..cd6af77daa9 100644
--- a/src/libstd/io/stdio.rs
+++ b/src/libstd/io/stdio.rs
@@ -45,7 +45,7 @@ struct StdoutRaw(stdio::Stdout);
 /// the `std::io::stdio::stderr_raw` function.
 struct StderrRaw(stdio::Stderr);
 
-/// Construct a new raw handle to the standard input of this process.
+/// Constructs a new raw handle to the standard input of this process.
 ///
 /// The returned handle does not interact with any other handles created nor
 /// handles returned by `std::io::stdin`. Data buffered by the `std::io::stdin`
@@ -54,7 +54,7 @@ struct StderrRaw(stdio::Stderr);
 /// The returned handle has no external synchronization or buffering.
 fn stdin_raw() -> StdinRaw { StdinRaw(stdio::Stdin::new()) }
 
-/// Construct a new raw handle to the standard input stream of this process.
+/// Constructs a new raw handle to the standard input stream of this process.
 ///
 /// The returned handle does not interact with any other handles created nor
 /// handles returned by `std::io::stdout`. Note that data is buffered by the
@@ -65,7 +65,7 @@ fn stdin_raw() -> StdinRaw { StdinRaw(stdio::Stdin::new()) }
 /// top.
 fn stdout_raw() -> StdoutRaw { StdoutRaw(stdio::Stdout::new()) }
 
-/// Construct a new raw handle to the standard input stream of this process.
+/// Constructs a new raw handle to the standard input stream of this process.
 ///
 /// The returned handle does not interact with any other handles created nor
 /// handles returned by `std::io::stdout`.
@@ -109,7 +109,7 @@ pub struct StdinLock<'a> {
     inner: MutexGuard<'a, BufReader<StdinRaw>>,
 }
 
-/// Create a new handle to the global standard input stream of this process.
+/// Creates a new handle to the global standard input stream of this process.
 ///
 /// The handle returned refers to a globally shared buffer between all threads.
 /// Access is synchronized and can be explicitly controlled with the `lock()`
@@ -139,7 +139,7 @@ pub fn stdin() -> Stdin {
 }
 
 impl Stdin {
-    /// Lock this handle to the standard input stream, returning a readable
+    /// Locks this handle to the standard input stream, returning a readable
     /// guard.
     ///
     /// The lock is released when the returned lock goes out of scope. The
@@ -243,7 +243,7 @@ pub fn stdout() -> Stdout {
 }
 
 impl Stdout {
-    /// Lock this handle to the standard output stream, returning a writable
+    /// Locks this handle to the standard output stream, returning a writable
     /// guard.
     ///
     /// The lock is released when the returned lock goes out of scope. The
@@ -315,7 +315,7 @@ pub fn stderr() -> Stderr {
 }
 
 impl Stderr {
-    /// Lock this handle to the standard error stream, returning a writable
+    /// Locks this handle to the standard error stream, returning a writable
     /// guard.
     ///
     /// The lock is released when the returned lock goes out of scope. The
diff --git a/src/libstd/net/ip.rs b/src/libstd/net/ip.rs
index c8b19287477..8d4af4689af 100644
--- a/src/libstd/net/ip.rs
+++ b/src/libstd/net/ip.rs
@@ -58,7 +58,7 @@ pub enum Ipv6MulticastScope {
 }
 
 impl Ipv4Addr {
-    /// Create a new IPv4 address from four eight-bit octets.
+    /// Creates a new IPv4 address from four eight-bit octets.
     ///
     /// The result will represent the IP address a.b.c.d
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -127,7 +127,7 @@ impl Ipv4Addr {
         self.octets()[0] >= 224 && self.octets()[0] <= 239
     }
 
-    /// Convert this address to an IPv4-compatible IPv6 address
+    /// Converts this address to an IPv4-compatible IPv6 address
     ///
     /// a.b.c.d becomes ::a.b.c.d
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -137,7 +137,7 @@ impl Ipv4Addr {
                       ((self.octets()[2] as u16) << 8) | self.octets()[3] as u16)
     }
 
-    /// Convert this address to an IPv4-mapped IPv6 address
+    /// Converts this address to an IPv4-mapped IPv6 address
     ///
     /// a.b.c.d becomes ::ffff:a.b.c.d
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -220,7 +220,7 @@ impl FromInner<libc::in_addr> for Ipv4Addr {
 }
 
 impl Ipv6Addr {
-    /// Create a new IPv6 address from eight 16-bit segments.
+    /// Creates a new IPv6 address from eight 16-bit segments.
     ///
     /// The result will represent the IP address a:b:c:d:e:f:g:h
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -234,7 +234,7 @@ impl Ipv6Addr {
         }
     }
 
-    /// Return the eight 16-bit segments that make up this address
+    /// Returns the eight 16-bit segments that make up this address
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn segments(&self) -> [u16; 8] {
         [ntoh(self.inner.s6_addr[0]),
@@ -324,7 +324,7 @@ impl Ipv6Addr {
         (self.segments()[0] & 0xff00) == 0xff00
     }
 
-    /// Convert this address to an IPv4 address. Returns None if this address is
+    /// Converts this address to an IPv4 address. Returns None if this address is
     /// neither IPv4-compatible or IPv4-mapped.
     ///
     /// ::a.b.c.d and ::ffff:a.b.c.d become a.b.c.d
diff --git a/src/libstd/net/tcp.rs b/src/libstd/net/tcp.rs
index 2da6f7420ac..209a0032fb4 100644
--- a/src/libstd/net/tcp.rs
+++ b/src/libstd/net/tcp.rs
@@ -82,7 +82,7 @@ pub struct TcpListener(net_imp::TcpListener);
 pub struct Incoming<'a> { listener: &'a TcpListener }
 
 impl TcpStream {
-    /// Open a TCP connection to a remote host.
+    /// Opens a TCP connection to a remote host.
     ///
     /// `addr` is an address of the remote host. Anything which implements
     /// `ToSocketAddrs` trait can be supplied for the address; see this trait
@@ -104,7 +104,7 @@ impl TcpStream {
         self.0.socket_addr()
     }
 
-    /// Shut down the read, write, or both halves of this connection.
+    /// Shuts down the read, write, or both halves of this connection.
     ///
     /// This function will cause all pending and future I/O on the specified
     /// portions to return immediately with an appropriate value (see the
@@ -114,7 +114,7 @@ impl TcpStream {
         self.0.shutdown(how)
     }
 
-    /// Create a new independently owned handle to the underlying socket.
+    /// Creates a new independently owned handle to the underlying socket.
     ///
     /// The returned `TcpStream` is a reference to the same stream that this
     /// object references. Both handles will read and write the same stream of
@@ -190,7 +190,7 @@ impl TcpListener {
         self.0.socket_addr()
     }
 
-    /// Create a new independently owned handle to the underlying socket.
+    /// Creates a new independently owned handle to the underlying socket.
     ///
     /// The returned `TcpListener` is a reference to the same socket that this
     /// object references. Both handles can be used to accept incoming
diff --git a/src/libstd/net/udp.rs b/src/libstd/net/udp.rs
index bec9c09bc31..1955b895300 100644
--- a/src/libstd/net/udp.rs
+++ b/src/libstd/net/udp.rs
@@ -85,7 +85,7 @@ impl UdpSocket {
         self.0.socket_addr()
     }
 
-    /// Create a new independently owned handle to the underlying socket.
+    /// Creates a new independently owned handle to the underlying socket.
     ///
     /// The returned `UdpSocket` is a reference to the same socket that this
     /// object references. Both handles will read and write the same port, and
@@ -100,7 +100,7 @@ impl UdpSocket {
         self.0.set_broadcast(on)
     }
 
-    /// Set the multicast loop flag to the specified value
+    /// Sets the multicast loop flag to the specified value
     ///
     /// This lets multicast packets loop back to local sockets (if enabled)
     pub fn set_multicast_loop(&self, on: bool) -> io::Result<()> {
diff --git a/src/libstd/num/f32.rs b/src/libstd/num/f32.rs
index 6128469c60e..736f6d2f4f4 100644
--- a/src/libstd/num/f32.rs
+++ b/src/libstd/num/f32.rs
@@ -527,7 +527,7 @@ impl f32 {
     #[inline]
     pub fn round(self) -> f32 { num::Float::round(self) }
 
-    /// Return the integer part of a number.
+    /// Returns the integer part of a number.
     ///
     /// ```
     /// let f = 3.3_f32;
@@ -666,7 +666,7 @@ impl f32 {
     #[inline]
     pub fn mul_add(self, a: f32, b: f32) -> f32 { num::Float::mul_add(self, a, b) }
 
-    /// Take the reciprocal (inverse) of a number, `1/x`.
+    /// Takes the reciprocal (inverse) of a number, `1/x`.
     ///
     /// ```
     /// use std::f32;
@@ -680,7 +680,7 @@ impl f32 {
     #[inline]
     pub fn recip(self) -> f32 { num::Float::recip(self) }
 
-    /// Raise a number to an integer power.
+    /// Raises a number to an integer power.
     ///
     /// Using this function is generally faster than using `powf`
     ///
@@ -696,7 +696,7 @@ impl f32 {
     #[inline]
     pub fn powi(self, n: i32) -> f32 { num::Float::powi(self, n) }
 
-    /// Raise a number to a floating point power.
+    /// Raises a number to a floating point power.
     ///
     /// ```
     /// use std::f32;
@@ -710,7 +710,7 @@ impl f32 {
     #[inline]
     pub fn powf(self, n: f32) -> f32 { num::Float::powf(self, n) }
 
-    /// Take the square root of a number.
+    /// Takes the square root of a number.
     ///
     /// Returns NaN if `self` is a negative number.
     ///
@@ -729,7 +729,7 @@ impl f32 {
     #[inline]
     pub fn sqrt(self) -> f32 { num::Float::sqrt(self) }
 
-    /// Take the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
+    /// Takes the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -852,7 +852,7 @@ impl f32 {
     #[inline]
     pub fn log10(self) -> f32 { num::Float::log10(self) }
 
-    /// Convert radians to degrees.
+    /// Converts radians to degrees.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -868,7 +868,7 @@ impl f32 {
     #[inline]
     pub fn to_degrees(self) -> f32 { num::Float::to_degrees(self) }
 
-    /// Convert degrees to radians.
+    /// Converts degrees to radians.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -1003,7 +1003,7 @@ impl f32 {
         unsafe { cmath::fdimf(self, other) }
     }
 
-    /// Take the cubic root of a number.
+    /// Takes the cubic root of a number.
     ///
     /// ```
     /// use std::f32;
@@ -1021,7 +1021,7 @@ impl f32 {
         unsafe { cmath::cbrtf(self) }
     }
 
-    /// Calculate the length of the hypotenuse of a right-angle triangle given
+    /// Calculates the length of the hypotenuse of a right-angle triangle given
     /// legs of length `x` and `y`.
     ///
     /// ```
diff --git a/src/libstd/num/f64.rs b/src/libstd/num/f64.rs
index 794853f6f70..bb9067eca13 100644
--- a/src/libstd/num/f64.rs
+++ b/src/libstd/num/f64.rs
@@ -534,7 +534,7 @@ impl f64 {
     #[inline]
     pub fn round(self) -> f64 { num::Float::round(self) }
 
-    /// Return the integer part of a number.
+    /// Returns the integer part of a number.
     ///
     /// ```
     /// let f = 3.3_f64;
@@ -671,7 +671,7 @@ impl f64 {
     #[inline]
     pub fn mul_add(self, a: f64, b: f64) -> f64 { num::Float::mul_add(self, a, b) }
 
-    /// Take the reciprocal (inverse) of a number, `1/x`.
+    /// Takes the reciprocal (inverse) of a number, `1/x`.
     ///
     /// ```
     /// let x = 2.0_f64;
@@ -683,7 +683,7 @@ impl f64 {
     #[inline]
     pub fn recip(self) -> f64 { num::Float::recip(self) }
 
-    /// Raise a number to an integer power.
+    /// Raises a number to an integer power.
     ///
     /// Using this function is generally faster than using `powf`
     ///
@@ -697,7 +697,7 @@ impl f64 {
     #[inline]
     pub fn powi(self, n: i32) -> f64 { num::Float::powi(self, n) }
 
-    /// Raise a number to a floating point power.
+    /// Raises a number to a floating point power.
     ///
     /// ```
     /// let x = 2.0_f64;
@@ -709,7 +709,7 @@ impl f64 {
     #[inline]
     pub fn powf(self, n: f64) -> f64 { num::Float::powf(self, n) }
 
-    /// Take the square root of a number.
+    /// Takes the square root of a number.
     ///
     /// Returns NaN if `self` is a negative number.
     ///
@@ -726,7 +726,7 @@ impl f64 {
     #[inline]
     pub fn sqrt(self) -> f64 { num::Float::sqrt(self) }
 
-    /// Take the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
+    /// Takes the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -835,7 +835,7 @@ impl f64 {
     #[inline]
     pub fn log10(self) -> f64 { num::Float::log10(self) }
 
-    /// Convert radians to degrees.
+    /// Converts radians to degrees.
     ///
     /// ```
     /// use std::f64::consts;
@@ -850,7 +850,7 @@ impl f64 {
     #[inline]
     pub fn to_degrees(self) -> f64 { num::Float::to_degrees(self) }
 
-    /// Convert degrees to radians.
+    /// Converts degrees to radians.
     ///
     /// ```
     /// use std::f64::consts;
@@ -978,7 +978,7 @@ impl f64 {
         unsafe { cmath::fdim(self, other) }
     }
 
-    /// Take the cubic root of a number.
+    /// Takes the cubic root of a number.
     ///
     /// ```
     /// let x = 8.0_f64;
@@ -994,7 +994,7 @@ impl f64 {
         unsafe { cmath::cbrt(self) }
     }
 
-    /// Calculate the length of the hypotenuse of a right-angle triangle given
+    /// Calculates the length of the hypotenuse of a right-angle triangle given
     /// legs of length `x` and `y`.
     ///
     /// ```
diff --git a/src/libstd/num/mod.rs b/src/libstd/num/mod.rs
index ea516e5b20b..e0b9c720dbb 100644
--- a/src/libstd/num/mod.rs
+++ b/src/libstd/num/mod.rs
@@ -383,7 +383,7 @@ pub trait Float
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     fn round(self) -> Self;
-    /// Return the integer part of a number.
+    /// Returns the integer part of a number.
     ///
     /// ```
     /// use std::num::Float;
@@ -509,7 +509,7 @@ pub trait Float
     #[unstable(feature = "std_misc",
                reason = "unsure about its place in the world")]
     fn mul_add(self, a: Self, b: Self) -> Self;
-    /// Take the reciprocal (inverse) of a number, `1/x`.
+    /// Takes the reciprocal (inverse) of a number, `1/x`.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -524,7 +524,7 @@ pub trait Float
                reason = "unsure about its place in the world")]
     fn recip(self) -> Self;
 
-    /// Raise a number to an integer power.
+    /// Raises a number to an integer power.
     ///
     /// Using this function is generally faster than using `powf`
     ///
@@ -538,7 +538,7 @@ pub trait Float
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     fn powi(self, n: i32) -> Self;
-    /// Raise a number to a floating point power.
+    /// Raises a number to a floating point power.
     ///
     /// ```
     /// use std::num::Float;
@@ -550,7 +550,7 @@ pub trait Float
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     fn powf(self, n: Self) -> Self;
-    /// Take the square root of a number.
+    /// Takes the square root of a number.
     ///
     /// Returns NaN if `self` is a negative number.
     ///
@@ -569,7 +569,7 @@ pub trait Float
     #[stable(feature = "rust1", since = "1.0.0")]
     fn sqrt(self) -> Self;
 
-    /// Take the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
+    /// Takes the reciprocal (inverse) square root of a number, `1/sqrt(x)`.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -679,7 +679,7 @@ pub trait Float
     #[stable(feature = "rust1", since = "1.0.0")]
     fn log10(self) -> Self;
 
-    /// Convert radians to degrees.
+    /// Converts radians to degrees.
     ///
     /// ```
     /// use std::num::Float;
@@ -693,7 +693,7 @@ pub trait Float
     /// ```
     #[unstable(feature = "std_misc", reason = "desirability is unclear")]
     fn to_degrees(self) -> Self;
-    /// Convert degrees to radians.
+    /// Converts degrees to radians.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -807,7 +807,7 @@ pub trait Float
     /// ```
     #[unstable(feature = "std_misc", reason = "may be renamed")]
     fn abs_sub(self, other: Self) -> Self;
-    /// Take the cubic root of a number.
+    /// Takes the cubic root of a number.
     ///
     /// ```
     /// # #![feature(std_misc)]
@@ -822,7 +822,7 @@ pub trait Float
     /// ```
     #[unstable(feature = "std_misc", reason = "may be renamed")]
     fn cbrt(self) -> Self;
-    /// Calculate the length of the hypotenuse of a right-angle triangle given
+    /// Calculates the length of the hypotenuse of a right-angle triangle given
     /// legs of length `x` and `y`.
     ///
     /// ```
diff --git a/src/libstd/path.rs b/src/libstd/path.rs
index 4471b5afa84..cdc5cecbf38 100644
--- a/src/libstd/path.rs
+++ b/src/libstd/path.rs
@@ -312,7 +312,7 @@ impl<'a> Prefix<'a> {
 
     }
 
-    /// Determine if the prefix is verbatim, i.e. begins `\\?\`.
+    /// Determines if the prefix is verbatim, i.e. begins `\\?\`.
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn is_verbatim(&self) -> bool {
@@ -341,7 +341,7 @@ impl<'a> Prefix<'a> {
 // Exposed parsing helpers
 ////////////////////////////////////////////////////////////////////////////////
 
-/// Determine whether the character is one of the permitted path
+/// Determines whether the character is one of the permitted path
 /// separators for the current platform.
 ///
 /// # Examples
@@ -524,7 +524,7 @@ pub enum Component<'a> {
 }
 
 impl<'a> Component<'a> {
-    /// Extract the underlying `OsStr` slice
+    /// Extracts the underlying `OsStr` slice
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn as_os_str(self) -> &'a OsStr {
         match self {
@@ -629,7 +629,7 @@ impl<'a> Components<'a> {
         }
     }
 
-    /// Extract a slice corresponding to the portion of the path remaining for iteration.
+    /// Extracts a slice corresponding to the portion of the path remaining for iteration.
     ///
     /// # Examples
     ///
@@ -750,7 +750,7 @@ impl<'a> AsRef<OsStr> for Components<'a> {
 }
 
 impl<'a> Iter<'a> {
-    /// Extract a slice corresponding to the portion of the path remaining for iteration.
+    /// Extracts a slice corresponding to the portion of the path remaining for iteration.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn as_path(&self) -> &'a Path {
         self.inner.as_path()
@@ -941,19 +941,19 @@ impl PathBuf {
         unsafe { mem::transmute(self) }
     }
 
-    /// Allocate an empty `PathBuf`.
+    /// Allocates an empty `PathBuf`.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn new() -> PathBuf {
         PathBuf { inner: OsString::new() }
     }
 
-    /// Coerce to a `Path` slice.
+    /// Coerces to a `Path` slice.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn as_path(&self) -> &Path {
         self
     }
 
-    /// Extend `self` with `path`.
+    /// Extends `self` with `path`.
     ///
     /// If `path` is absolute, it replaces the current path.
     ///
@@ -1064,7 +1064,7 @@ impl PathBuf {
         true
     }
 
-    /// Consume the `PathBuf`, yielding its internal `OsString` storage
+    /// Consumes the `PathBuf`, yielding its internal `OsString` storage.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn into_os_string(self) -> OsString {
         self.inner
@@ -1254,7 +1254,7 @@ impl Path {
         unsafe { mem::transmute(s.as_ref()) }
     }
 
-    /// Yield the underlying `OsStr` slice.
+    /// Yields the underlying `OsStr` slice.
     ///
     /// # Examples
     ///
@@ -1268,7 +1268,7 @@ impl Path {
         &self.inner
     }
 
-    /// Yield a `&str` slice if the `Path` is valid unicode.
+    /// Yields a `&str` slice if the `Path` is valid unicode.
     ///
     /// This conversion may entail doing a check for UTF-8 validity.
     ///
@@ -1284,7 +1284,7 @@ impl Path {
         self.inner.to_str()
     }
 
-    /// Convert a `Path` to a `Cow<str>`.
+    /// Converts a `Path` to a `Cow<str>`.
     ///
     /// Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.
     ///
@@ -1300,7 +1300,7 @@ impl Path {
         self.inner.to_string_lossy()
     }
 
-    /// Convert a `Path` to an owned `PathBuf`.
+    /// Converts a `Path` to an owned `PathBuf`.
     ///
     /// # Examples
     ///
@@ -1477,7 +1477,7 @@ impl Path {
         iter_after(self.components().rev(), child.as_ref().components().rev()).is_some()
     }
 
-    /// Extract the stem (non-extension) portion of `self.file()`.
+    /// Extracts the stem (non-extension) portion of `self.file()`.
     ///
     /// The stem is:
     ///
@@ -1500,7 +1500,7 @@ impl Path {
         self.file_name().map(split_file_at_dot).and_then(|(before, after)| before.or(after))
     }
 
-    /// Extract the extension of `self.file()`, if possible.
+    /// Extracts the extension of `self.file()`, if possible.
     ///
     /// The extension is:
     ///
@@ -1714,7 +1714,7 @@ impl cmp::Ord for Path {
 #[unstable(feature = "std_misc")]
 #[deprecated(since = "1.0.0", reason = "use std::convert::AsRef<Path> instead")]
 pub trait AsPath {
-    /// Convert to a `Path`.
+    /// Converts to a `Path`.
     #[unstable(feature = "std_misc")]
     fn as_path(&self) -> &Path;
 }
diff --git a/src/libstd/process.rs b/src/libstd/process.rs
index cac1540d0ec..7306dd38260 100644
--- a/src/libstd/process.rs
+++ b/src/libstd/process.rs
@@ -194,7 +194,7 @@ impl Command {
         self
     }
 
-    /// Set the working directory for the child process.
+    /// Sets the working directory for the child process.
     #[stable(feature = "process", since = "1.0.0")]
     pub fn current_dir<P: AsRef<path::Path>>(&mut self, dir: P) -> &mut Command {
         self.inner.cwd(dir.as_ref().as_ref());
@@ -396,7 +396,7 @@ impl ExitStatus {
         self.0.success()
     }
 
-    /// Return the exit code of the process, if any.
+    /// Returns the exit code of the process, if any.
     ///
     /// On Unix, this will return `None` if the process was terminated
     /// by a signal; `std::os::unix` provides an extension trait for
@@ -453,7 +453,7 @@ impl Child {
         unsafe { self.handle.kill() }
     }
 
-    /// Wait for the child to exit completely, returning the status that it
+    /// Waits for the child to exit completely, returning the status that it
     /// exited with. This function will continue to have the same return value
     /// after it has been called at least once.
     ///
@@ -474,7 +474,7 @@ impl Child {
         }
     }
 
-    /// Simultaneously wait for the child to exit and collect all remaining
+    /// Simultaneously waits for the child to exit and collect all remaining
     /// output on the stdout/stderr handles, returning a `Output`
     /// instance.
     ///
diff --git a/src/libstd/sync/barrier.rs b/src/libstd/sync/barrier.rs
index ebf4d337749..34fcf6cdadd 100644
--- a/src/libstd/sync/barrier.rs
+++ b/src/libstd/sync/barrier.rs
@@ -49,7 +49,7 @@ struct BarrierState {
 pub struct BarrierWaitResult(bool);
 
 impl Barrier {
-    /// Create a new barrier that can block a given number of threads.
+    /// Creates a new barrier that can block a given number of threads.
     ///
     /// A barrier will block `n`-1 threads which call `wait` and then wake up
     /// all threads at once when the `n`th thread calls `wait`.
@@ -65,7 +65,7 @@ impl Barrier {
         }
     }
 
-    /// Block the current thread until all threads has rendezvoused here.
+    /// Blocks the current thread until all threads has rendezvoused here.
     ///
     /// Barriers are re-usable after all threads have rendezvoused once, and can
     /// be used continuously.
@@ -97,7 +97,7 @@ impl Barrier {
 }
 
 impl BarrierWaitResult {
-    /// Return whether this thread from `wait` is the "leader thread".
+    /// Returns whether this thread from `wait` is the "leader thread".
     ///
     /// Only one thread will have `true` returned from their result, all other
     /// threads will have `false` returned.
diff --git a/src/libstd/sync/condvar.rs b/src/libstd/sync/condvar.rs
index 654b33f1a57..fcb0d2c0b2d 100644
--- a/src/libstd/sync/condvar.rs
+++ b/src/libstd/sync/condvar.rs
@@ -102,7 +102,7 @@ impl Condvar {
         }
     }
 
-    /// Block the current thread until this condition variable receives a
+    /// Blocks the current thread until this condition variable receives a
     /// notification.
     ///
     /// This function will atomically unlock the mutex specified (represented by
@@ -137,7 +137,7 @@ impl Condvar {
         }
     }
 
-    /// Wait on this condition variable for a notification, timing out after a
+    /// Waits on this condition variable for a notification, timing out after a
     /// specified duration.
     ///
     /// The semantics of this function are equivalent to `wait()`
@@ -169,7 +169,7 @@ impl Condvar {
         self.wait_timeout_ms(guard, dur.num_milliseconds() as u32)
     }
 
-    /// Wait on this condition variable for a notification, timing out after a
+    /// Waits on this condition variable for a notification, timing out after a
     /// specified duration.
     ///
     /// The semantics of this function are equivalent to `wait_timeout` except
@@ -189,7 +189,7 @@ impl Condvar {
         }
     }
 
-    /// Wake up one blocked thread on this condvar.
+    /// Wakes up one blocked thread on this condvar.
     ///
     /// If there is a blocked thread on this condition variable, then it will
     /// be woken up from its call to `wait` or `wait_timeout`. Calls to
@@ -199,7 +199,7 @@ impl Condvar {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn notify_one(&self) { unsafe { self.inner.inner.notify_one() } }
 
-    /// Wake up all blocked threads on this condvar.
+    /// Wakes up all blocked threads on this condvar.
     ///
     /// This method will ensure that any current waiters on the condition
     /// variable are awoken. Calls to `notify_all()` are not buffered in any
@@ -218,7 +218,7 @@ impl Drop for Condvar {
 }
 
 impl StaticCondvar {
-    /// Block the current thread until this condition variable receives a
+    /// Blocks the current thread until this condition variable receives a
     /// notification.
     ///
     /// See `Condvar::wait`.
@@ -239,7 +239,7 @@ impl StaticCondvar {
         }
     }
 
-    /// Wait on this condition variable for a notification, timing out after a
+    /// Waits on this condition variable for a notification, timing out after a
     /// specified duration.
     ///
     /// See `Condvar::wait_timeout`.
@@ -260,7 +260,7 @@ impl StaticCondvar {
         }
     }
 
-    /// Wait on this condition variable for a notification, timing out after a
+    /// Waits on this condition variable for a notification, timing out after a
     /// specified duration.
     ///
     /// The implementation will repeatedly wait while the duration has not
@@ -306,21 +306,21 @@ impl StaticCondvar {
         poison::map_result(guard_result, |g| (g, true))
     }
 
-    /// Wake up one blocked thread on this condvar.
+    /// Wakes up one blocked thread on this condvar.
     ///
     /// See `Condvar::notify_one`.
     #[unstable(feature = "std_misc",
                reason = "may be merged with Condvar in the future")]
     pub fn notify_one(&'static self) { unsafe { self.inner.notify_one() } }
 
-    /// Wake up all blocked threads on this condvar.
+    /// Wakes up all blocked threads on this condvar.
     ///
     /// See `Condvar::notify_all`.
     #[unstable(feature = "std_misc",
                reason = "may be merged with Condvar in the future")]
     pub fn notify_all(&'static self) { unsafe { self.inner.notify_all() } }
 
-    /// Deallocate all resources associated with this static condvar.
+    /// Deallocates all resources associated with this static condvar.
     ///
     /// This method is unsafe to call as there is no guarantee that there are no
     /// active users of the condvar, and this also doesn't prevent any future
diff --git a/src/libstd/sync/mpsc/mod.rs b/src/libstd/sync/mpsc/mod.rs
index 93b27b6ce9e..422439fadc1 100644
--- a/src/libstd/sync/mpsc/mod.rs
+++ b/src/libstd/sync/mpsc/mod.rs
@@ -750,7 +750,7 @@ impl<T> Receiver<T> {
         }
     }
 
-    /// Attempt to wait for a value on this receiver, returning an error if the
+    /// Attempts to wait for a value on this receiver, returning an error if the
     /// corresponding channel has hung up.
     ///
     /// This function will always block the current thread if there is no data
diff --git a/src/libstd/sync/mpsc/select.rs b/src/libstd/sync/mpsc/select.rs
index b509b3472ee..b8ad92841f2 100644
--- a/src/libstd/sync/mpsc/select.rs
+++ b/src/libstd/sync/mpsc/select.rs
@@ -254,11 +254,11 @@ impl Select {
 }
 
 impl<'rx, T: Send> Handle<'rx, T> {
-    /// Retrieve the id of this handle.
+    /// Retrieves the id of this handle.
     #[inline]
     pub fn id(&self) -> usize { self.id }
 
-    /// Block to receive a value on the underlying receiver, returning `Some` on
+    /// Blocks to receive a value on the underlying receiver, returning `Some` on
     /// success or `None` if the channel disconnects. This function has the same
     /// semantics as `Receiver.recv`
     pub fn recv(&mut self) -> Result<T, RecvError> { self.rx.recv() }
diff --git a/src/libstd/sync/mutex.rs b/src/libstd/sync/mutex.rs
index 46fb20cd6a2..7896870ea07 100644
--- a/src/libstd/sync/mutex.rs
+++ b/src/libstd/sync/mutex.rs
@@ -232,7 +232,7 @@ impl<T> Mutex<T> {
         }
     }
 
-    /// Determine whether the lock is poisoned.
+    /// Determines whether the lock is poisoned.
     ///
     /// If another thread is active, the lock can still become poisoned at any
     /// time.  You should not trust a `false` value for program correctness
diff --git a/src/libstd/sync/once.rs b/src/libstd/sync/once.rs
index 258cf1d38a8..948965f5efa 100644
--- a/src/libstd/sync/once.rs
+++ b/src/libstd/sync/once.rs
@@ -51,7 +51,7 @@ pub const ONCE_INIT: Once = Once {
 };
 
 impl Once {
-    /// Perform an initialization routine once and only once. The given closure
+    /// Performs an initialization routine once and only once. The given closure
     /// will be executed if this is the first time `call_once` has been called,
     /// and otherwise the routine will *not* be invoked.
     ///
diff --git a/src/libstd/sync/rwlock.rs b/src/libstd/sync/rwlock.rs
index eb6d46a5dda..1ea92d5eff7 100644
--- a/src/libstd/sync/rwlock.rs
+++ b/src/libstd/sync/rwlock.rs
@@ -169,7 +169,7 @@ impl<T> RwLock<T> {
         RwLockReadGuard::new(&*self.inner, &self.data)
     }
 
-    /// Attempt to acquire this lock with shared read access.
+    /// Attempts to acquire this lock with shared read access.
     ///
     /// This function will never block and will return immediately if `read`
     /// would otherwise succeed. Returns `Some` of an RAII guard which will
@@ -194,7 +194,7 @@ impl<T> RwLock<T> {
         }
     }
 
-    /// Lock this rwlock with exclusive write access, blocking the current
+    /// Locks this rwlock with exclusive write access, blocking the current
     /// thread until it can be acquired.
     ///
     /// This function will not return while other writers or other readers
@@ -215,7 +215,7 @@ impl<T> RwLock<T> {
         RwLockWriteGuard::new(&*self.inner, &self.data)
     }
 
-    /// Attempt to lock this rwlock with exclusive write access.
+    /// Attempts to lock this rwlock with exclusive write access.
     ///
     /// This function does not ever block, and it will return `None` if a call
     /// to `write` would otherwise block. If successful, an RAII guard is
@@ -237,7 +237,7 @@ impl<T> RwLock<T> {
         }
     }
 
-    /// Determine whether the lock is poisoned.
+    /// Determines whether the lock is poisoned.
     ///
     /// If another thread is active, the lock can still become poisoned at any
     /// time.  You should not trust a `false` value for program correctness
@@ -287,7 +287,7 @@ impl StaticRwLock {
         RwLockReadGuard::new(self, &DUMMY.0)
     }
 
-    /// Attempt to acquire this lock with shared read access.
+    /// Attempts to acquire this lock with shared read access.
     ///
     /// See `RwLock::try_read`.
     #[inline]
@@ -302,7 +302,7 @@ impl StaticRwLock {
         }
     }
 
-    /// Lock this rwlock with exclusive write access, blocking the current
+    /// Locks this rwlock with exclusive write access, blocking the current
     /// thread until it can be acquired.
     ///
     /// See `RwLock::write`.
@@ -314,7 +314,7 @@ impl StaticRwLock {
         RwLockWriteGuard::new(self, &DUMMY.0)
     }
 
-    /// Attempt to lock this rwlock with exclusive write access.
+    /// Attempts to lock this rwlock with exclusive write access.
     ///
     /// See `RwLock::try_write`.
     #[inline]
@@ -329,7 +329,7 @@ impl StaticRwLock {
         }
     }
 
-    /// Deallocate all resources associated with this static lock.
+    /// Deallocates all resources associated with this static lock.
     ///
     /// This method is unsafe to call as there is no guarantee that there are no
     /// active users of the lock, and this also doesn't prevent any future users
diff --git a/src/libstd/sys/common/condvar.rs b/src/libstd/sys/common/condvar.rs
index 32fa6ec5903..9f46b0c3824 100644
--- a/src/libstd/sys/common/condvar.rs
+++ b/src/libstd/sys/common/condvar.rs
@@ -31,15 +31,15 @@ impl Condvar {
     #[inline]
     pub unsafe fn new() -> Condvar { Condvar(imp::Condvar::new()) }
 
-    /// Signal one waiter on this condition variable to wake up.
+    /// Signals one waiter on this condition variable to wake up.
     #[inline]
     pub unsafe fn notify_one(&self) { self.0.notify_one() }
 
-    /// Awaken all current waiters on this condition variable.
+    /// Awakens all current waiters on this condition variable.
     #[inline]
     pub unsafe fn notify_all(&self) { self.0.notify_all() }
 
-    /// Wait for a signal on the specified mutex.
+    /// Waits for a signal on the specified mutex.
     ///
     /// Behavior is undefined if the mutex is not locked by the current thread.
     /// Behavior is also undefined if more than one mutex is used concurrently
@@ -47,7 +47,7 @@ impl Condvar {
     #[inline]
     pub unsafe fn wait(&self, mutex: &Mutex) { self.0.wait(mutex::raw(mutex)) }
 
-    /// Wait for a signal on the specified mutex with a timeout duration
+    /// Waits for a signal on the specified mutex with a timeout duration
     /// specified by `dur` (a relative time into the future).
     ///
     /// Behavior is undefined if the mutex is not locked by the current thread.
@@ -58,7 +58,7 @@ impl Condvar {
         self.0.wait_timeout(mutex::raw(mutex), dur)
     }
 
-    /// Deallocate all resources associated with this condition variable.
+    /// Deallocates all resources associated with this condition variable.
     ///
     /// Behavior is undefined if there are current or will be future users of
     /// this condition variable.
diff --git a/src/libstd/sys/common/mutex.rs b/src/libstd/sys/common/mutex.rs
index 0ca22826700..1f9dd54192c 100644
--- a/src/libstd/sys/common/mutex.rs
+++ b/src/libstd/sys/common/mutex.rs
@@ -24,14 +24,14 @@ unsafe impl Sync for Mutex {}
 pub const MUTEX_INIT: Mutex = Mutex(imp::MUTEX_INIT);
 
 impl Mutex {
-    /// Lock the mutex blocking the current thread until it is available.
+    /// Locks the mutex blocking the current thread until it is available.
     ///
     /// Behavior is undefined if the mutex has been moved between this and any
     /// previous function call.
     #[inline]
     pub unsafe fn lock(&self) { self.0.lock() }
 
-    /// Attempt to lock the mutex without blocking, returning whether it was
+    /// Attempts to lock the mutex without blocking, returning whether it was
     /// successfully acquired or not.
     ///
     /// Behavior is undefined if the mutex has been moved between this and any
@@ -39,14 +39,14 @@ impl Mutex {
     #[inline]
     pub unsafe fn try_lock(&self) -> bool { self.0.try_lock() }
 
-    /// Unlock the mutex.
+    /// Unlocks the mutex.
     ///
     /// Behavior is undefined if the current thread does not actually hold the
     /// mutex.
     #[inline]
     pub unsafe fn unlock(&self) { self.0.unlock() }
 
-    /// Deallocate all resources associated with this mutex.
+    /// Deallocates all resources associated with this mutex.
     ///
     /// Behavior is undefined if there are current or will be future users of
     /// this mutex.
diff --git a/src/libstd/sys/common/poison.rs b/src/libstd/sys/common/poison.rs
index 347cd0b464e..6deb4a48007 100644
--- a/src/libstd/sys/common/poison.rs
+++ b/src/libstd/sys/common/poison.rs
@@ -116,7 +116,7 @@ impl<T: Send> Error for PoisonError<T> {
 }
 
 impl<T> PoisonError<T> {
-    /// Create a `PoisonError`.
+    /// Creates a `PoisonError`.
     #[unstable(feature = "std_misc")]
     pub fn new(guard: T) -> PoisonError<T> {
         PoisonError { guard: guard }
diff --git a/src/libstd/sys/common/rwlock.rs b/src/libstd/sys/common/rwlock.rs
index f7d7a5715bc..725a09bcc86 100644
--- a/src/libstd/sys/common/rwlock.rs
+++ b/src/libstd/sys/common/rwlock.rs
@@ -21,7 +21,7 @@ pub struct RWLock(imp::RWLock);
 pub const RWLOCK_INIT: RWLock = RWLock(imp::RWLOCK_INIT);
 
 impl RWLock {
-    /// Acquire shared access to the underlying lock, blocking the current
+    /// Acquires shared access to the underlying lock, blocking the current
     /// thread to do so.
     ///
     /// Behavior is undefined if the rwlock has been moved between this and any
@@ -29,7 +29,7 @@ impl RWLock {
     #[inline]
     pub unsafe fn read(&self) { self.0.read() }
 
-    /// Attempt to acquire shared access to this lock, returning whether it
+    /// Attempts to acquire shared access to this lock, returning whether it
     /// succeeded or not.
     ///
     /// This function does not block the current thread.
@@ -39,7 +39,7 @@ impl RWLock {
     #[inline]
     pub unsafe fn try_read(&self) -> bool { self.0.try_read() }
 
-    /// Acquire write access to the underlying lock, blocking the current thread
+    /// Acquires write access to the underlying lock, blocking the current thread
     /// to do so.
     ///
     /// Behavior is undefined if the rwlock has been moved between this and any
@@ -47,7 +47,7 @@ impl RWLock {
     #[inline]
     pub unsafe fn write(&self) { self.0.write() }
 
-    /// Attempt to acquire exclusive access to this lock, returning whether it
+    /// Attempts to acquire exclusive access to this lock, returning whether it
     /// succeeded or not.
     ///
     /// This function does not block the current thread.
@@ -57,20 +57,20 @@ impl RWLock {
     #[inline]
     pub unsafe fn try_write(&self) -> bool { self.0.try_write() }
 
-    /// Unlock previously acquired shared access to this lock.
+    /// Unlocks previously acquired shared access to this lock.
     ///
     /// Behavior is undefined if the current thread does not have shared access.
     #[inline]
     pub unsafe fn read_unlock(&self) { self.0.read_unlock() }
 
-    /// Unlock previously acquired exclusive access to this lock.
+    /// Unlocks previously acquired exclusive access to this lock.
     ///
     /// Behavior is undefined if the current thread does not currently have
     /// exclusive access.
     #[inline]
     pub unsafe fn write_unlock(&self) { self.0.write_unlock() }
 
-    /// Destroy OS-related resources with this RWLock.
+    /// Destroys OS-related resources with this RWLock.
     ///
     /// Behavior is undefined if there are any currently active users of this
     /// lock.
diff --git a/src/libstd/sys/common/thread_local.rs b/src/libstd/sys/common/thread_local.rs
index 5995d7ac10f..618a389110a 100644
--- a/src/libstd/sys/common/thread_local.rs
+++ b/src/libstd/sys/common/thread_local.rs
@@ -207,7 +207,7 @@ impl StaticKey {
 }
 
 impl Key {
-    /// Create a new managed OS TLS key.
+    /// Creates a new managed OS TLS key.
     ///
     /// This key will be deallocated when the key falls out of scope.
     ///
diff --git a/src/libstd/sys/common/wtf8.rs b/src/libstd/sys/common/wtf8.rs
index 987a12293da..34a4a773f8e 100644
--- a/src/libstd/sys/common/wtf8.rs
+++ b/src/libstd/sys/common/wtf8.rs
@@ -69,7 +69,7 @@ impl fmt::Debug for CodePoint {
 }
 
 impl CodePoint {
-    /// Unsafely create a new `CodePoint` without checking the value.
+    /// Unsafely creates a new `CodePoint` without checking the value.
     ///
     /// Only use when `value` is known to be less than or equal to 0x10FFFF.
     #[inline]
@@ -77,9 +77,9 @@ impl CodePoint {
         CodePoint { value: value }
     }
 
-    /// Create a new `CodePoint` if the value is a valid code point.
+    /// Creates a new `CodePoint` if the value is a valid code point.
     ///
-    /// Return `None` if `value` is above 0x10FFFF.
+    /// Returns `None` if `value` is above 0x10FFFF.
     #[inline]
     pub fn from_u32(value: u32) -> Option<CodePoint> {
         match value {
@@ -88,7 +88,7 @@ impl CodePoint {
         }
     }
 
-    /// Create a new `CodePoint` from a `char`.
+    /// Creates a new `CodePoint` from a `char`.
     ///
     /// Since all Unicode scalar values are code points, this always succeeds.
     #[inline]
@@ -96,15 +96,15 @@ impl CodePoint {
         CodePoint { value: value as u32 }
     }
 
-    /// Return the numeric value of the code point.
+    /// Returns the numeric value of the code point.
     #[inline]
     pub fn to_u32(&self) -> u32 {
         self.value
     }
 
-    /// Optionally return a Unicode scalar value for the code point.
+    /// Optionally returns a Unicode scalar value for the code point.
     ///
-    /// Return `None` if the code point is a surrogate (from U+D800 to U+DFFF).
+    /// Returns `None` if the code point is a surrogate (from U+D800 to U+DFFF).
     #[inline]
     pub fn to_char(&self) -> Option<char> {
         match self.value {
@@ -113,9 +113,9 @@ impl CodePoint {
         }
     }
 
-    /// Return a Unicode scalar value for the code point.
+    /// Returns a Unicode scalar value for the code point.
     ///
-    /// Return `'\u{FFFD}'` (the replacement character “�”)
+    /// Returns `'\u{FFFD}'` (the replacement character “�”)
     /// if the code point is a surrogate (from U+D800 to U+DFFF).
     #[inline]
     pub fn to_char_lossy(&self) -> char {
@@ -151,19 +151,19 @@ impl fmt::Debug for Wtf8Buf {
 }
 
 impl Wtf8Buf {
-    /// Create an new, empty WTF-8 string.
+    /// Creates an new, empty WTF-8 string.
     #[inline]
     pub fn new() -> Wtf8Buf {
         Wtf8Buf { bytes: Vec::new() }
     }
 
-    /// Create an new, empty WTF-8 string with pre-allocated capacity for `n` bytes.
+    /// Creates an new, empty WTF-8 string with pre-allocated capacity for `n` bytes.
     #[inline]
     pub fn with_capacity(n: usize) -> Wtf8Buf {
         Wtf8Buf { bytes: Vec::with_capacity(n) }
     }
 
-    /// Create a WTF-8 string from an UTF-8 `String`.
+    /// Creates a WTF-8 string from an UTF-8 `String`.
     ///
     /// This takes ownership of the `String` and does not copy.
     ///
@@ -173,7 +173,7 @@ impl Wtf8Buf {
         Wtf8Buf { bytes: string.into_bytes() }
     }
 
-    /// Create a WTF-8 string from an UTF-8 `&str` slice.
+    /// Creates a WTF-8 string from an UTF-8 `&str` slice.
     ///
     /// This copies the content of the slice.
     ///
@@ -183,7 +183,7 @@ impl Wtf8Buf {
         Wtf8Buf { bytes: <[_]>::to_vec(str.as_bytes()) }
     }
 
-    /// Create a WTF-8 string from a potentially ill-formed UTF-16 slice of 16-bit code units.
+    /// Creates a WTF-8 string from a potentially ill-formed UTF-16 slice of 16-bit code units.
     ///
     /// This is lossless: calling `.encode_wide()` on the resulting string
     /// will always return the original code units.
@@ -319,7 +319,7 @@ impl Wtf8Buf {
         self.bytes.truncate(new_len)
     }
 
-    /// Consume the WTF-8 string and try to convert it to UTF-8.
+    /// Consumes the WTF-8 string and tries to convert it to UTF-8.
     ///
     /// This does not copy the data.
     ///
@@ -333,7 +333,7 @@ impl Wtf8Buf {
         }
     }
 
-    /// Consume the WTF-8 string and convert it lossily to UTF-8.
+    /// Consumes the WTF-8 string and converts it lossily to UTF-8.
     ///
     /// This does not copy the data (but may overwrite parts of it in place).
     ///
@@ -454,7 +454,7 @@ impl fmt::Debug for Wtf8 {
 }
 
 impl Wtf8 {
-    /// Create a WTF-8 slice from a UTF-8 `&str` slice.
+    /// Creates a WTF-8 slice from a UTF-8 `&str` slice.
     ///
     /// Since WTF-8 is a superset of UTF-8, this always succeeds.
     #[inline]
@@ -462,13 +462,13 @@ impl Wtf8 {
         unsafe { mem::transmute(value.as_bytes()) }
     }
 
-    /// Return the length, in WTF-8 bytes.
+    /// Returns the length, in WTF-8 bytes.
     #[inline]
     pub fn len(&self) -> usize {
         self.bytes.len()
     }
 
-    /// Return the code point at `position` if it is in the ASCII range,
+    /// Returns the code point at `position` if it is in the ASCII range,
     /// or `b'\xFF' otherwise.
     ///
     /// # Panics
@@ -482,7 +482,7 @@ impl Wtf8 {
         }
     }
 
-    /// Return the code point at `position`.
+    /// Returns the code point at `position`.
     ///
     /// # Panics
     ///
@@ -494,7 +494,7 @@ impl Wtf8 {
         code_point
     }
 
-    /// Return the code point at `position`
+    /// Returns the code point at `position`
     /// and the position of the next code point.
     ///
     /// # Panics
@@ -507,15 +507,15 @@ impl Wtf8 {
         (CodePoint { value: c }, n)
     }
 
-    /// Return an iterator for the string’s code points.
+    /// Returns an iterator for the string’s code points.
     #[inline]
     pub fn code_points(&self) -> Wtf8CodePoints {
         Wtf8CodePoints { bytes: self.bytes.iter() }
     }
 
-    /// Try to convert the string to UTF-8 and return a `&str` slice.
+    /// Tries to convert the string to UTF-8 and return a `&str` slice.
     ///
-    /// Return `None` if the string contains surrogates.
+    /// Returns `None` if the string contains surrogates.
     ///
     /// This does not copy the data.
     #[inline]
@@ -528,8 +528,8 @@ impl Wtf8 {
         }
     }
 
-    /// Lossily convert the string to UTF-8.
-    /// Return an UTF-8 `&str` slice if the contents are well-formed in UTF-8.
+    /// Lossily converts the string to UTF-8.
+    /// Returns an UTF-8 `&str` slice if the contents are well-formed in UTF-8.
     ///
     /// Surrogates are replaced with `"\u{FFFD}"` (the replacement character “�”).
     ///
@@ -559,7 +559,7 @@ impl Wtf8 {
         }
     }
 
-    /// Convert the WTF-8 string to potentially ill-formed UTF-16
+    /// Converts the WTF-8 string to potentially ill-formed UTF-16
     /// and return an iterator of 16-bit code units.
     ///
     /// This is lossless:
diff --git a/src/libstd/sys/unix/ext.rs b/src/libstd/sys/unix/ext.rs
index fbfbb40701f..a95cb85e74a 100644
--- a/src/libstd/sys/unix/ext.rs
+++ b/src/libstd/sys/unix/ext.rs
@@ -53,7 +53,7 @@ pub mod io {
     /// and `AsRawSocket` set of traits.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait AsRawFd {
-        /// Extract the raw file descriptor.
+        /// Extracts the raw file descriptor.
         ///
         /// This method does **not** pass ownership of the raw file descriptor
         /// to the caller. The descriptor is only guarantee to be valid while
@@ -216,11 +216,11 @@ pub mod ffi {
     /// Unix-specific extensions to `OsString`.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait OsStringExt {
-        /// Create an `OsString` from a byte vector.
+        /// Creates an `OsString` from a byte vector.
         #[stable(feature = "rust1", since = "1.0.0")]
         fn from_vec(vec: Vec<u8>) -> Self;
 
-        /// Yield the underlying byte vector of this `OsString`.
+        /// Yields the underlying byte vector of this `OsString`.
         #[stable(feature = "rust1", since = "1.0.0")]
         fn into_vec(self) -> Vec<u8>;
     }
@@ -241,7 +241,7 @@ pub mod ffi {
         #[stable(feature = "rust1", since = "1.0.0")]
         fn from_bytes(slice: &[u8]) -> &Self;
 
-        /// Get the underlying byte view of the `OsStr` slice.
+        /// Gets the underlying byte view of the `OsStr` slice.
         #[stable(feature = "rust1", since = "1.0.0")]
         fn as_bytes(&self) -> &[u8];
     }
@@ -280,7 +280,7 @@ pub mod fs {
 
     /// Unix-specific extensions to `OpenOptions`
     pub trait OpenOptionsExt {
-        /// Set the mode bits that a new file will be created with.
+        /// Sets the mode bits that a new file will be created with.
         ///
         /// If a new file is created as part of a `File::open_opts` call then this
         /// specified `mode` will be used as the permission bits for the new file.
diff --git a/src/libstd/sys/unix/fd.rs b/src/libstd/sys/unix/fd.rs
index d86c77624e8..e5bdb554359 100644
--- a/src/libstd/sys/unix/fd.rs
+++ b/src/libstd/sys/unix/fd.rs
@@ -28,7 +28,7 @@ impl FileDesc {
 
     pub fn raw(&self) -> c_int { self.fd }
 
-    /// Extract the actual filedescriptor without closing it.
+    /// Extracts the actual filedescriptor without closing it.
     pub fn into_raw(self) -> c_int {
         let fd = self.fd;
         unsafe { mem::forget(self) };
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index 6121105f10b..c74d6b7e077 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -130,7 +130,7 @@ impl FileDesc {
         }
     }
 
-    /// Extract the actual filedescriptor without closing it.
+    /// Extracts the actual filedescriptor without closing it.
     pub fn unwrap(self) -> fd_t {
         let fd = self.fd;
         unsafe { mem::forget(self) };
diff --git a/src/libstd/sys/unix/mod.rs b/src/libstd/sys/unix/mod.rs
index e8409bb4fd4..71da2f9219c 100644
--- a/src/libstd/sys/unix/mod.rs
+++ b/src/libstd/sys/unix/mod.rs
@@ -85,7 +85,7 @@ pub fn last_gai_error(s: libc::c_int) -> IoError {
     err
 }
 
-/// Convert an `errno` value into a high-level error variant and description.
+/// Converts an `errno` value into a high-level error variant and description.
 #[allow(deprecated)]
 pub fn decode_error(errno: i32) -> IoError {
     // FIXME: this should probably be a bit more descriptive...
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index d2220bdec32..52ec6063d7a 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -86,7 +86,7 @@ pub fn errno() -> i32 {
     }
 }
 
-/// Get a detailed string description for the given error number
+/// Gets a detailed string description for the given error number.
 pub fn error_string(errno: i32) -> String {
     #[cfg(target_os = "linux")]
     extern {
diff --git a/src/libstd/sys/windows/ext.rs b/src/libstd/sys/windows/ext.rs
index 2dd61861bd6..022407ebc02 100644
--- a/src/libstd/sys/windows/ext.rs
+++ b/src/libstd/sys/windows/ext.rs
@@ -38,7 +38,7 @@ pub mod io {
     /// Extract raw handles.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait AsRawHandle {
-        /// Extract the raw handle, without taking any ownership.
+        /// Extracts the raw handle, without taking any ownership.
         #[stable(feature = "rust1", since = "1.0.0")]
         fn as_raw_handle(&self) -> RawHandle;
     }
@@ -47,7 +47,7 @@ pub mod io {
     #[unstable(feature = "from_raw_os",
                reason = "recent addition to the std::os::windows::io module")]
     pub trait FromRawHandle {
-        /// Construct a new I/O object from the specified raw handle.
+        /// Constructs a new I/O object from the specified raw handle.
         ///
         /// This function will **consume ownership** of the handle given,
         /// passing responsibility for closing the handle to the returned
@@ -112,7 +112,7 @@ pub mod io {
     /// Extract raw sockets.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait AsRawSocket {
-        /// Extract the underlying raw socket from this object.
+        /// Extracts the underlying raw socket from this object.
         #[stable(feature = "rust1", since = "1.0.0")]
         fn as_raw_socket(&self) -> RawSocket;
     }
@@ -214,7 +214,7 @@ pub mod ffi {
     /// Windows-specific extensions to `OsString`.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait OsStringExt {
-        /// Create an `OsString` from a potentially ill-formed UTF-16 slice of
+        /// Creates an `OsString` from a potentially ill-formed UTF-16 slice of
         /// 16-bit code units.
         ///
         /// This is lossless: calling `.encode_wide()` on the resulting string
@@ -233,7 +233,7 @@ pub mod ffi {
     /// Windows-specific extensions to `OsStr`.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub trait OsStrExt {
-        /// Re-encode an `OsStr` as a wide character sequence,
+        /// Re-encodes an `OsStr` as a wide character sequence,
         /// i.e. potentially ill-formed UTF-16.
         ///
         /// This is lossless. Note that the encoding does not include a final
@@ -258,25 +258,25 @@ pub mod fs {
 
     /// Windows-specific extensions to `OpenOptions`
     pub trait OpenOptionsExt {
-        /// Override the `dwDesiredAccess` argument to the call to `CreateFile`
+        /// Overrides the `dwDesiredAccess` argument to the call to `CreateFile`
         /// with the specified value.
         fn desired_access(&mut self, access: i32) -> &mut Self;
 
-        /// Override the `dwCreationDisposition` argument to the call to
+        /// Overrides the `dwCreationDisposition` argument to the call to
         /// `CreateFile` with the specified value.
         ///
         /// This will override any values of the standard `create` flags, for
         /// example.
         fn creation_disposition(&mut self, val: i32) -> &mut Self;
 
-        /// Override the `dwFlagsAndAttributes` argument to the call to
+        /// Overrides the `dwFlagsAndAttributes` argument to the call to
         /// `CreateFile` with the specified value.
         ///
         /// This will override any values of the standard flags on the
         /// `OpenOptions` structure.
         fn flags_and_attributes(&mut self, val: i32) -> &mut Self;
 
-        /// Override the `dwShareMode` argument to the call to `CreateFile` with
+        /// Overrides the `dwShareMode` argument to the call to `CreateFile` with
         /// the specified value.
         ///
         /// This will override any values of the standard flags on the
diff --git a/src/libstd/sys/windows/mod.rs b/src/libstd/sys/windows/mod.rs
index e9d5fca531f..eb031e9b745 100644
--- a/src/libstd/sys/windows/mod.rs
+++ b/src/libstd/sys/windows/mod.rs
@@ -95,7 +95,7 @@ pub fn last_gai_error(_errno: i32) -> IoError {
     last_net_error()
 }
 
-/// Convert an `errno` value into a high-level error variant and description.
+/// Converts an `errno` value into a high-level error variant and description.
 #[allow(deprecated)]
 pub fn decode_error(errno: i32) -> IoError {
     let (kind, desc) = match errno {
diff --git a/src/libstd/sys/windows/os.rs b/src/libstd/sys/windows/os.rs
index d5843a2f998..232e5669c2b 100644
--- a/src/libstd/sys/windows/os.rs
+++ b/src/libstd/sys/windows/os.rs
@@ -42,7 +42,7 @@ pub fn errno() -> i32 {
     unsafe { libc::GetLastError() as i32 }
 }
 
-/// Get a detailed string description for the given error number
+/// Gets a detailed string description for the given error number.
 pub fn error_string(errnum: i32) -> String {
     use libc::types::os::arch::extra::DWORD;
     use libc::types::os::arch::extra::LPWSTR;
diff --git a/src/libstd/thread/local.rs b/src/libstd/thread/local.rs
index f5a1093be2b..cc4031cc180 100644
--- a/src/libstd/thread/local.rs
+++ b/src/libstd/thread/local.rs
@@ -226,7 +226,7 @@ pub enum LocalKeyState {
 }
 
 impl<T: 'static> LocalKey<T> {
-    /// Acquire a reference to the value in this TLS key.
+    /// Acquires a reference to the value in this TLS key.
     ///
     /// This will lazily initialize the value if this thread has not referenced
     /// this key yet.
diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index 0e5fee27ffe..5db7e9773c9 100644
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -215,7 +215,7 @@ pub struct Builder {
 }
 
 impl Builder {
-    /// Generate the base configuration for spawning a thread, from which
+    /// Generates the base configuration for spawning a thread, from which
     /// configuration methods can be chained.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn new() -> Builder {
@@ -225,7 +225,7 @@ impl Builder {
         }
     }
 
-    /// Name the thread-to-be. Currently the name is used for identification
+    /// Names the thread-to-be. Currently the name is used for identification
     /// only in panic messages.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn name(mut self, name: String) -> Builder {
@@ -233,14 +233,14 @@ impl Builder {
         self
     }
 
-    /// Set the size of the stack for the new thread.
+    /// Sets the size of the stack for the new thread.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn stack_size(mut self, size: usize) -> Builder {
         self.stack_size = Some(size);
         self
     }
 
-    /// Spawn a new thread, and return a join handle for it.
+    /// Spawns a new thread, and returns a join handle for it.
     ///
     /// The child thread may outlive the parent (unless the parent thread
     /// is the main thread; the whole process is terminated when the main
@@ -259,8 +259,8 @@ impl Builder {
         self.spawn_inner(Box::new(f)).map(|i| JoinHandle(i))
     }
 
-    /// Spawn a new child thread that must be joined within a given
-    /// scope, and return a `JoinGuard`.
+    /// Spawns a new child thread that must be joined within a given
+    /// scope, and returns a `JoinGuard`.
     ///
     /// The join guard can be used to explicitly join the child thread (via
     /// `join`), returning `Result<T>`, or it will implicitly join the child
@@ -355,7 +355,7 @@ impl Builder {
 // Free functions
 ////////////////////////////////////////////////////////////////////////////////
 
-/// Spawn a new thread, returning a `JoinHandle` for it.
+/// Spawns a new thread, returning a `JoinHandle` for it.
 ///
 /// The join handle will implicitly *detach* the child thread upon being
 /// dropped. In this case, the child thread may outlive the parent (unless
@@ -374,7 +374,7 @@ pub fn spawn<F>(f: F) -> JoinHandle where F: FnOnce(), F: Send + 'static {
     Builder::new().spawn(f).unwrap()
 }
 
-/// Spawn a new *scoped* thread, returning a `JoinGuard` for it.
+/// Spawns a new *scoped* thread, returning a `JoinGuard` for it.
 ///
 /// The join guard can be used to explicitly join the child thread (via
 /// `join`), returning `Result<T>`, or it will implicitly join the child
@@ -400,7 +400,7 @@ pub fn current() -> Thread {
     thread_info::current_thread()
 }
 
-/// Cooperatively give up a timeslice to the OS scheduler.
+/// Cooperatively gives up a timeslice to the OS scheduler.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn yield_now() {
     unsafe { imp::yield_now() }
@@ -413,7 +413,7 @@ pub fn panicking() -> bool {
     unwind::panicking()
 }
 
-/// Invoke a closure, capturing the cause of panic if one occurs.
+/// Invokes a closure, capturing the cause of panic if one occurs.
 ///
 /// This function will return `Ok(())` if the closure does not panic, and will
 /// return `Err(cause)` if the closure panics. The `cause` returned is the
@@ -462,7 +462,7 @@ pub fn catch_panic<F, R>(f: F) -> Result<R>
     Ok(result.unwrap())
 }
 
-/// Put the current thread to sleep for the specified amount of time.
+/// Puts the current thread to sleep for the specified amount of time.
 ///
 /// The thread may sleep longer than the duration specified due to scheduling
 /// specifics or platform-dependent functionality. Note that on unix platforms
@@ -482,7 +482,7 @@ pub fn sleep(dur: Duration) {
     imp::sleep(dur)
 }
 
-/// Block unless or until the current thread's token is made available (may wake spuriously).
+/// Blocks unless or until the current thread's token is made available (may wake spuriously).
 ///
 /// See the module doc for more detail.
 //
@@ -501,7 +501,7 @@ pub fn park() {
     *guard = false;
 }
 
-/// Block unless or until the current thread's token is made available or
+/// Blocks unless or until the current thread's token is made available or
 /// the specified duration has been reached (may wake spuriously).
 ///
 /// The semantics of this function are equivalent to `park()` except that the
@@ -573,7 +573,7 @@ impl Thread {
         }
     }
 
-    /// Get the thread's name.
+    /// Gets the thread's name.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn name(&self) -> Option<&str> {
         self.inner.name.as_ref().map(|s| &**s)
@@ -638,13 +638,13 @@ impl<T> JoinInner<T> {
 pub struct JoinHandle(JoinInner<()>);
 
 impl JoinHandle {
-    /// Extract a handle to the underlying thread
+    /// Extracts a handle to the underlying thread
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn thread(&self) -> &Thread {
         &self.0.thread
     }
 
-    /// Wait for the associated thread to finish.
+    /// Waits for the associated thread to finish.
     ///
     /// If the child thread panics, `Err` is returned with the parameter given
     /// to `panic`.
@@ -684,13 +684,13 @@ pub struct JoinGuard<'a, T: Send + 'a> {
 unsafe impl<'a, T: Send + 'a> Sync for JoinGuard<'a, T> {}
 
 impl<'a, T: Send + 'a> JoinGuard<'a, T> {
-    /// Extract a handle to the thread this guard will join on.
+    /// Extracts a handle to the thread this guard will join on.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn thread(&self) -> &Thread {
         &self.inner.thread
     }
 
-    /// Wait for the associated thread to finish, returning the result of the
+    /// Waits for the associated thread to finish, returning the result of the
     /// thread's calculation.
     ///
     /// # Panics
diff --git a/src/libstd/thread/scoped_tls.rs b/src/libstd/thread/scoped_tls.rs
index fa980954c2f..9c0b4a5d833 100644
--- a/src/libstd/thread/scoped_tls.rs
+++ b/src/libstd/thread/scoped_tls.rs
@@ -135,7 +135,7 @@ macro_rules! __scoped_thread_local_inner {
            reason = "scoped TLS has yet to have wide enough use to fully consider \
                      stabilizing its interface")]
 impl<T> ScopedKey<T> {
-    /// Insert a value into this scoped thread local storage slot for a
+    /// Inserts a value into this scoped thread local storage slot for a
     /// duration of a closure.
     ///
     /// While `cb` is running, the value `t` will be returned by `get` unless
@@ -188,7 +188,7 @@ impl<T> ScopedKey<T> {
         cb()
     }
 
-    /// Get a value out of this scoped variable.
+    /// Gets a value out of this scoped variable.
     ///
     /// This function takes a closure which receives the value of this
     /// variable.