Provide Debug impls for all types

src/buf/chain.rs

@@ -26,6 +26,7 @@ use iovec::IoVec;
 /// [`Buf::chain`]: trait.Buf.html#method.chain
 /// [`Buf`]: trait.Buf.html
 /// [`BufMut`]: trait.BufMut.html
+#[derive(Debug)]
 pub struct Chain<T, U> {
     a: T,
     b: U,

src/buf/iter.rs

@@ -22,6 +22,7 @@ use Buf;
 ///
 /// [`iter`]: trait.Buf.html#method.iter
 /// [`Buf`]: trait.Buf.html
+#[derive(Debug)]
 pub struct Iter<T> {
     inner: T,
 }

src/buf/reader.rs

@@ -7,6 +7,7 @@ use std::{cmp, io};
 /// This struct is generally created by calling `reader()` on `Buf`. See
 /// documentation of [`reader()`](trait.Buf.html#method.reader) for more
 /// details.
+#[derive(Debug)]
 pub struct Reader<B> {
     buf: B,
 }

src/buf/take.rs

@@ -6,6 +6,7 @@ use std::cmp;
 ///
 /// This struct is generally created by calling `take()` on `Buf`. See
 /// documentation of [`take()`](trait.Buf.html#method.take) for more details.
+#[derive(Debug)]
 pub struct Take<T> {
     inner: T,
     limit: usize,

src/buf/writer.rs

@@ -7,6 +7,7 @@ use std::{cmp, io};
 /// This struct is generally created by calling `writer()` on `BufMut`. See
 /// documentation of [`writer()`](trait.BufMut.html#method.writer) for more
 /// details.
+#[derive(Debug)]
 pub struct Writer<B> {
     buf: B,
 }

src/lib.rs

@@ -68,7 +68,7 @@
 //! perform a syscall, which has the potential of failing. Operations on `Buf`
 //! and `BufMut` are infallible.
 
-#![deny(warnings, missing_docs)]
+#![deny(warnings, missing_docs, missing_debug_implementations)]
 #![doc(html_root_url = "https://docs.rs/bytes/0.4")]
 
 extern crate byteorder;