rollup merge of #23919: alexcrichton/stabilize-io-error

Conflicts:
	src/libstd/fs/tempdir.rs
	src/libstd/io/error.rs

1 files changed, 2 insertions, 3 deletions

diff --git a/src/libstd/sys/common/net2.rs b/src/libstd/sys/common/net2.rs
index e787442052d..7d42d65d360 100644
--- a/src/libstd/sys/common/net2.rs
+++ b/src/libstd/sys/common/net2.rs
@@ -75,7 +75,7 @@ fn sockaddr_to_addr(storage: &libc::sockaddr_storage,
             })))
         }
         _ => {
-            Err(Error::new(ErrorKind::InvalidInput, "invalid argument", None))
+            Err(Error::new(ErrorKind::InvalidInput, "invalid argument"))
         }
     }
 }
@@ -158,8 +158,7 @@ pub fn lookup_addr(addr: &IpAddr) -> io::Result<String> {
     match from_utf8(data.to_bytes()) {
         Ok(name) => Ok(name.to_string()),
         Err(_) => Err(io::Error::new(io::ErrorKind::Other,
-                                     "failed to lookup address information",
-                                     Some("invalid host name".to_string())))
+                                     "failed to lookup address information"))
     }
 }