diff --git a/codegen/src/sqlstate.rs b/codegen/src/sqlstate.rs
index eaad7015..07194216 100644
--- a/codegen/src/sqlstate.rs
+++ b/codegen/src/sqlstate.rs
@@ -83,6 +83,7 @@ fn make_enum(codes: &[Code], file: &mut BufWriter<File>) {
     write!(file,
 r#"/// SQLSTATE error codes
 #[derive(PartialEq, Eq, Clone, Debug)]
+#[allow(enum_variant_names)]
 pub enum SqlState {{
 "#
            ).unwrap();
diff --git a/src/error/sqlstate.rs b/src/error/sqlstate.rs
index e7b5c292..12590048 100644
--- a/src/error/sqlstate.rs
+++ b/src/error/sqlstate.rs
@@ -3,6 +3,7 @@ use phf;
 
 /// SQLSTATE error codes
 #[derive(PartialEq, Eq, Clone, Debug)]
+#[allow(enum_variant_names)]
 pub enum SqlState {
     /// `00000`
     SuccessfulCompletion,
diff --git a/src/lib.rs b/src/lib.rs
index 2ed852e9..17fcd739 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -40,7 +40,7 @@
 //! ```
 #![doc(html_root_url="https://sfackler.github.io/rust-postgres/doc/v0.11.11")]
 #![warn(missing_docs)]
-#![allow(unknown_lints, needless_lifetimes)] // for clippy
+#![allow(unknown_lints, needless_lifetimes, doc_markdown)] // for clippy
 
 extern crate bufstream;
 extern crate byteorder;
@@ -510,7 +510,7 @@ impl InnerConnection {
             let info = SessionInfo::new(&self.parameters);
             let r = self.stream.write_message(|buf| {
                 frontend::bind(portal_name,
-                               &stmt_name,
+                               stmt_name,
                                Some(1),
                                params.iter().zip(param_types),
                                |(param, ty), buf| {
@@ -654,27 +654,27 @@ impl InnerConnection {
 
         let (name, type_, elem_oid, rngsubtype, basetype, schema, relid) = {
             let ctx = SessionInfo::new(&self.parameters);
-            let name = try!(String::from_sql(&Type::Name, &mut &**row[0].as_ref().unwrap(), &ctx)
+            let name = try!(String::from_sql(&Type::Name, row[0].as_ref().unwrap(), &ctx)
                 .map_err(Error::Conversion));
-            let type_ = try!(i8::from_sql(&Type::Char, &mut &**row[1].as_ref().unwrap(), &ctx)
+            let type_ = try!(i8::from_sql(&Type::Char, row[1].as_ref().unwrap(), &ctx)
                 .map_err(Error::Conversion));
-            let elem_oid = try!(Oid::from_sql(&Type::Oid, &mut &**row[2].as_ref().unwrap(), &ctx)
+            let elem_oid = try!(Oid::from_sql(&Type::Oid, row[2].as_ref().unwrap(), &ctx)
                 .map_err(Error::Conversion));
             let rngsubtype = match row[3] {
                 Some(ref data) => {
-                    try!(Option::<Oid>::from_sql(&Type::Oid, &mut &**data, &ctx)
+                    try!(Option::<Oid>::from_sql(&Type::Oid, data, &ctx)
                         .map_err(Error::Conversion))
                 }
                 None => {
                     try!(Option::<Oid>::from_sql_null(&Type::Oid, &ctx).map_err(Error::Conversion))
                 }
             };
-            let basetype = try!(Oid::from_sql(&Type::Oid, &mut &**row[4].as_ref().unwrap(), &ctx)
+            let basetype = try!(Oid::from_sql(&Type::Oid, row[4].as_ref().unwrap(), &ctx)
                 .map_err(Error::Conversion));
             let schema =
-                try!(String::from_sql(&Type::Name, &mut &**row[5].as_ref().unwrap(), &ctx)
+                try!(String::from_sql(&Type::Name, row[5].as_ref().unwrap(), &ctx)
                     .map_err(Error::Conversion));
-            let relid = try!(Oid::from_sql(&Type::Oid, &mut &**row[6].as_ref().unwrap(), &ctx)
+            let relid = try!(Oid::from_sql(&Type::Oid, row[6].as_ref().unwrap(), &ctx)
                 .map_err(Error::Conversion));
             (name, type_, elem_oid, rngsubtype, basetype, schema, relid)
         };
@@ -734,7 +734,7 @@ impl InnerConnection {
         let ctx = SessionInfo::new(&self.parameters);
         let mut variants = vec![];
         for row in rows {
-            variants.push(try!(String::from_sql(&Type::Name, &mut &**row[0].as_ref().unwrap(), &ctx)
+            variants.push(try!(String::from_sql(&Type::Name, row[0].as_ref().unwrap(), &ctx)
                     .map_err(Error::Conversion)));
         }
 
@@ -769,9 +769,9 @@ impl InnerConnection {
             let (name, type_) = {
                 let ctx = SessionInfo::new(&self.parameters);
                 let name =
-                    try!(String::from_sql(&Type::Name, &mut &**row[0].as_ref().unwrap(), &ctx)
+                    try!(String::from_sql(&Type::Name, row[0].as_ref().unwrap(), &ctx)
                         .map_err(Error::Conversion));
-                let type_ = try!(Oid::from_sql(&Type::Oid, &mut &**row[1].as_ref().unwrap(), &ctx)
+                let type_ = try!(Oid::from_sql(&Type::Oid, row[1].as_ref().unwrap(), &ctx)
                     .map_err(Error::Conversion));
                 (name, type_)
             };
diff --git a/src/rows.rs b/src/rows.rs
index 34056ee8..de3769ba 100644
--- a/src/rows.rs
+++ b/src/rows.rs
@@ -239,7 +239,7 @@ impl<'a> Row<'a> {
         let conn = self.stmt.conn().conn.borrow();
         let value = match self.data[idx] {
             Some(ref data) => {
-                FromSql::from_sql(ty, &mut &**data, &SessionInfo::new(&conn.parameters))
+                FromSql::from_sql(ty, data, &SessionInfo::new(&conn.parameters))
             }
             None => FromSql::from_sql_null(ty, &SessionInfo::new(&conn.parameters)),
         };
diff --git a/src/types/mod.rs b/src/types/mod.rs
index ba1082a6..a2c989b2 100644
--- a/src/types/mod.rs
+++ b/src/types/mod.rs
@@ -365,8 +365,8 @@ impl<T: FromSql> FromSql for Vec<T> {
         array.values()
             .and_then(|v| {
                 match v {
-                    Some(v) => T::from_sql(&member_type, v, info),
-                    None => T::from_sql_null(&member_type, info),
+                    Some(v) => T::from_sql(member_type, v, info),
+                    None => T::from_sql_null(member_type, info),
                 }
             })
             .collect()