Ignore explicit_auto_deref clippy lint

    error: deref which would be done by auto-deref
        --> serde/src/de/impls.rs:2014:59
         |
    2014 | ...                   Err(Error::unknown_field(&*value, FIELDS))
         |                                                 ^^^^^^ help: try this: `value`
         |
         = note: `-D clippy::explicit-auto-deref` implied by `-D clippy::all`
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_auto_deref

    error: deref which would be done by auto-deref
        --> serde/src/de/impls.rs:2354:55
         |
    2354 | ...                   Err(Error::unknown_field(&*value, FIELDS))
         |                                                 ^^^^^^ help: try this: `value`
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_auto_deref

serde/src/lib.rs

@@ -120,6 +120,7 @@
         // correctly used
         derive_partial_eq_without_eq,
         enum_glob_use,
+        explicit_auto_deref,
         let_underscore_drop,
         map_err_ignore,
         result_unit_err,