diff --git a/configure b/configure
index 4f3375b866817..9b8207ee91555 100755
--- a/configure
+++ b/configure
@@ -717,10 +717,10 @@ probe CFG_MD5              md5
 probe CFG_MD5SUM           md5sum
 if [ -n "$CFG_MD5" ]
 then
-    CFG_HASH_COMMAND="$CFG_MD5 -q | head -c 8"
+    CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 elif [ -n "$CFG_MD5SUM" ]
 then
-    CFG_HASH_COMMAND="$CFG_MD5SUM | head -c 8"
+    CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 else
     err 'could not find one of: md5 md5sum'
 fi
diff --git a/src/doc/trpl/macros.md b/src/doc/trpl/macros.md
index cc7d9b595f910..a45d4824f4123 100644
--- a/src/doc/trpl/macros.md
+++ b/src/doc/trpl/macros.md
@@ -476,9 +476,9 @@ which syntactic form it matches.
 
 There are additional rules regarding the next token after a metavariable:
 
-* `expr` variables must be followed by one of: `=> , ;`
-* `ty` and `path` variables must be followed by one of: `=> , : = > as`
-* `pat` variables must be followed by one of: `=> , =`
+* `expr` variables may only be followed by one of: `=> , ;`
+* `ty` and `path` variables may only be followed by one of: `=> , : = > as`
+* `pat` variables may only be followed by one of: `=> , =`
 * Other variables may be followed by any token.
 
 These rules provide some flexibility for Rust’s syntax to evolve without
diff --git a/src/doc/trpl/strings.md b/src/doc/trpl/strings.md
index abe17a96b39a6..c354fd09edd80 100644
--- a/src/doc/trpl/strings.md
+++ b/src/doc/trpl/strings.md
@@ -123,7 +123,7 @@ let world = "world!".to_string();
 let hello_world = hello + &world;
 ```
 
-This is because `&String` can automatically coerece to a `&str`. This is a
+This is because `&String` can automatically coerce to a `&str`. This is a
 feature called ‘[`Deref` coercions][dc]’.
 
 [dc]: deref-coercions.html
diff --git a/src/libcore/marker.rs b/src/libcore/marker.rs
index 5909c5cc30e51..86e91df38ab35 100644
--- a/src/libcore/marker.rs
+++ b/src/libcore/marker.rs
@@ -120,11 +120,10 @@ pub trait Unsize<T> {
 /// ```
 ///
 /// The `PointList` `struct` cannot implement `Copy`, because `Vec<T>` is not `Copy`. If we
-/// attempt to derive a `Copy` implementation, we'll get an error.
+/// attempt to derive a `Copy` implementation, we'll get an error:
 ///
 /// ```text
-/// error: the trait `Copy` may not be implemented for this type; field `points` does not implement
-/// `Copy`
+/// the trait `Copy` may not be implemented for this type; field `points` does not implement `Copy`
 /// ```
 ///
 /// ## How can I implement `Copy`?