diff --git a/src/connector/mssql/conversion.rs b/src/connector/mssql/conversion.rs
index 76b66fc54..f53ee79e9 100644
--- a/src/connector/mssql/conversion.rs
+++ b/src/connector/mssql/conversion.rs
@@ -17,7 +17,7 @@ pub fn conv_params<'a>(params: &'a [Value<'a>]) -> crate::Result<Vec<&'a dyn ToS
             let mut builder = Error::builder(kind);
             builder.set_original_message(msg);
 
-            return Err(builder.build())
+            return Err(builder.build());
         } else {
             converted.push(param as &dyn ToSql)
         }
diff --git a/src/connector/mssql/error.rs b/src/connector/mssql/error.rs
index 718590204..f5ecff231 100644
--- a/src/connector/mssql/error.rs
+++ b/src/connector/mssql/error.rs
@@ -70,7 +70,8 @@ impl From<tiberius::error::Error> for Error {
             tiberius::error::Error::Server(e) if e.code() == 547 => {
                 let index = e
                     .message()
-                    .split('.').next()
+                    .split('.')
+                    .next()
                     .unwrap()
                     .split_whitespace()
                     .last()
diff --git a/src/connector/mysql/conversion.rs b/src/connector/mysql/conversion.rs
index 682f125ab..d6c79db52 100644
--- a/src/connector/mysql/conversion.rs
+++ b/src/connector/mysql/conversion.rs
@@ -11,7 +11,7 @@ use mysql_async::{
 };
 use std::convert::TryFrom;
 
-pub fn conv_params<'a>(params: &[Value<'a>]) -> crate::Result<my::Params> {
+pub fn conv_params(params: &[Value<'_>]) -> crate::Result<my::Params> {
     if params.is_empty() {
         // If we don't use explicit 'Empty',
         // mysql crashes with 'internal error: entered unreachable code'
@@ -63,7 +63,7 @@ pub fn conv_params<'a>(params: &[Value<'a>]) -> crate::Result<my::Params> {
                     let mut builder = Error::builder(kind);
                     builder.set_original_message(msg);
 
-                    return Err(builder.build())
+                    return Err(builder.build());
                 }
                 #[cfg(feature = "uuid-0_8")]
                 Value::Uuid(u) => u.map(|u| my::Value::Bytes(u.to_hyphenated().to_string().into_bytes())),
@@ -276,12 +276,12 @@ impl TakeRow for my::Row {
                 my::Value::Time(is_neg, days, hours, minutes, seconds, micros) => {
                     if is_neg {
                         let kind = ErrorKind::conversion("Failed to convert a negative time");
-                        return Err(Error::builder(kind).build())
+                        return Err(Error::builder(kind).build());
                     }
 
                     if days != 0 {
                         let kind = ErrorKind::conversion("Failed to read a MySQL `time` as duration");
-                        return Err(Error::builder(kind).build())
+                        return Err(Error::builder(kind).build());
                     }
 
                     let time = NaiveTime::from_hms_micro(hours.into(), minutes.into(), seconds.into(), micros);
@@ -310,7 +310,7 @@ impl TakeRow for my::Row {
                         );
 
                         let kind = ErrorKind::conversion(msg);
-                        return Err(Error::builder(kind).build())
+                        return Err(Error::builder(kind).build());
                     }
                 },
                 #[cfg(not(feature = "chrono-0_4"))]
diff --git a/src/connector/postgres/conversion.rs b/src/connector/postgres/conversion.rs
index 47944b0c3..e88a05111 100644
--- a/src/connector/postgres/conversion.rs
+++ b/src/connector/postgres/conversion.rs
@@ -648,7 +648,7 @@ fn string_to_bits(s: &str) -> crate::Result<BitVec> {
                 let msg = "Unexpected character for bits input. Expected only 1 and 0.";
                 let kind = ErrorKind::conversion(msg);
 
-                return Err(Error::builder(kind).build())
+                return Err(Error::builder(kind).build());
             }
         }
     }
diff --git a/src/connector/sqlite/conversion.rs b/src/connector/sqlite/conversion.rs
index 58058037e..84e625fdc 100644
--- a/src/connector/sqlite/conversion.rs
+++ b/src/connector/sqlite/conversion.rs
@@ -118,7 +118,7 @@ impl<'a> GetRow for SqliteRow<'a> {
                             let msg = format!("Value {} not supported", n);
                             let kind = ErrorKind::conversion(msg);
 
-                            return Err(Error::builder(kind).build())
+                            return Err(Error::builder(kind).build());
                         }
                         None => Value::Integer(None),
                     },
@@ -212,7 +212,7 @@ impl<'a> ToSql for Value<'a> {
                 let mut builder = Error::builder(kind);
                 builder.set_original_message(msg);
 
-                return Err(RusqlError::ToSqlConversionFailure(Box::new(builder.build())))
+                return Err(RusqlError::ToSqlConversionFailure(Box::new(builder.build())));
             }
             #[cfg(feature = "json-1")]
             Value::Json(value) => value.as_ref().map(|value| {
diff --git a/src/visitor/mssql.rs b/src/visitor/mssql.rs
index 4cdf42104..d20c471dd 100644
--- a/src/visitor/mssql.rs
+++ b/src/visitor/mssql.rs
@@ -192,7 +192,7 @@ impl<'a> Visitor<'a> for Mssql<'a> {
                 let mut builder = Error::builder(kind);
                 builder.set_original_message(msg);
 
-                return Err(builder.build())
+                return Err(builder.build());
             }
             #[cfg(feature = "uuid-0_8")]
             Value::Uuid(uuid) => uuid.map(|uuid| {
diff --git a/src/visitor/mysql.rs b/src/visitor/mysql.rs
index 658a45e56..4ca051dd3 100644
--- a/src/visitor/mysql.rs
+++ b/src/visitor/mysql.rs
@@ -80,7 +80,7 @@ impl<'a> Visitor<'a> for Mysql<'a> {
                 let mut builder = Error::builder(kind);
                 builder.set_original_message(msg);
 
-                return Err(builder.build())
+                return Err(builder.build());
             }
             #[cfg(feature = "uuid-0_8")]
             Value::Uuid(uuid) => uuid.map(|uuid| self.write(format!("'{}'", uuid.to_hyphenated().to_string()))),
diff --git a/src/visitor/sqlite.rs b/src/visitor/sqlite.rs
index 7da53d8cf..3a58ccddf 100644
--- a/src/visitor/sqlite.rs
+++ b/src/visitor/sqlite.rs
@@ -64,7 +64,7 @@ impl<'a> Visitor<'a> for Sqlite<'a> {
                 let mut builder = Error::builder(kind);
                 builder.set_original_message(msg);
 
-                return Err(builder.build())
+                return Err(builder.build());
             }
             #[cfg(feature = "uuid-0_8")]
             Value::Uuid(uuid) => uuid.map(|uuid| self.write(format!("'{}'", uuid.to_hyphenated().to_string()))),