Merge commit 'b52fb5234cd7c11ecfae51897a6f7fa52e8777fc' into clippyup

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diff --git a/src/docs/explicit_write.txt b/src/docs/explicit_write.txt
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+### What it does
+Checks for usage of `write!()` / `writeln()!` which can be
+replaced with `(e)print!()` / `(e)println!()`
+
+### Why is this bad?
+Using `(e)println! is clearer and more concise
+
+### Example
+```
+writeln!(&mut std::io::stderr(), "foo: {:?}", bar).unwrap();
+writeln!(&mut std::io::stdout(), "foo: {:?}", bar).unwrap();
+```
+
+Use instead:
+```
+eprintln!("foo: {:?}", bar);
+println!("foo: {:?}", bar);
+```
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