io: expose std{in, out, err} under io feature (#1759)

This exposes `std{in, out, err}` under io feature by moving
`fs::blocking` module into `io::blocking`.
As `fs` feature depends on `io-trait` feature, `fs` implementations can
always access `io` module.

1 files changed, 1 insertions, 1 deletions

diff --git a/tokio/src/fs/file.rs b/tokio/src/fs/file.rs
index 0ff45025..af7be586 100644
--- a/tokio/src/fs/file.rs
+++ b/tokio/src/fs/file.rs
@@ -3,8 +3,8 @@
 //! [`File`]: file/struct.File.html
 
 use self::State::*;
-use crate::fs::blocking::Buf;
 use crate::fs::{asyncify, sys};
+use crate::io::blocking::Buf;
 use crate::io::{AsyncRead, AsyncWrite};
 
 use std::fmt;