diff --git a/src/datetime.rs b/src/datetime.rs
index 7a40d4d..1fc7c18 100644
--- a/src/datetime.rs
+++ b/src/datetime.rs
@@ -554,7 +554,7 @@ pub mod rustc_serialize {
     impl Decodable for TsSeconds<FixedOffset> {
         fn decode<D: Decoder>(d: &mut D) -> Result<TsSeconds<FixedOffset>, D::Error> {
             from(FixedOffset::east(0).timestamp_opt(d.read_i64()?, 0), d)
-                .map(|dt| TsSeconds(dt))
+                .map(TsSeconds)
         }
     }
 
@@ -590,7 +590,7 @@ pub mod rustc_serialize {
     impl Decodable for TsSeconds<Utc> {
         fn decode<D: Decoder>(d: &mut D) -> Result<TsSeconds<Utc>, D::Error> {
             from(Utc.timestamp_opt(d.read_i64()?, 0), d)
-                .map(|dt| TsSeconds(dt))
+                .map(TsSeconds)
         }
     }
 
diff --git a/src/naive/datetime.rs b/src/naive/datetime.rs
index 6e628de..50ebd87 100644
--- a/src/naive/datetime.rs
+++ b/src/naive/datetime.rs
@@ -135,7 +135,7 @@ impl NaiveDateTime {
     pub fn from_timestamp_opt(secs: i64, nsecs: u32) -> Option<NaiveDateTime> {
         let (days, secs) = div_mod_floor(secs, 86400);
         let date = days.to_i32().and_then(|days| days.checked_add(719163))
-                                .and_then(|days_ce| NaiveDate::from_num_days_from_ce_opt(days_ce));
+                                .and_then(NaiveDate::from_num_days_from_ce_opt);
         let time = NaiveTime::from_num_seconds_from_midnight_opt(secs as u32, nsecs);
         match (date, time) {
             (Some(date), Some(time)) => Some(NaiveDateTime { date: date, time: time }),