diff --git a/integration_tests/async_await/src/main.rs b/integration_tests/async_await/src/main.rs
index c29a3164..46229e3f 100644
--- a/integration_tests/async_await/src/main.rs
+++ b/integration_tests/async_await/src/main.rs
@@ -1,3 +1,4 @@
+#[cfg(test)]
 use juniper::{graphql_value, GraphQLError, RootNode, Value};
 
 #[derive(juniper::GraphQLEnum)]
@@ -8,13 +9,17 @@ enum UserKind {
 }
 
 struct User {
-    id: u64,
+    id: i32,
     name: String,
     kind: UserKind,
 }
 
 #[juniper::graphql_object]
 impl User {
+    async fn id(&self) -> i32 {
+        self.id
+    }
+
     async fn name(&self) -> &str {
         &self.name
     }
diff --git a/integration_tests/juniper_tests/src/codegen/derive_object.rs b/integration_tests/juniper_tests/src/codegen/derive_object.rs
index edf1aaf9..cbeaac7f 100644
--- a/integration_tests/juniper_tests/src/codegen/derive_object.rs
+++ b/integration_tests/juniper_tests/src/codegen/derive_object.rs
@@ -125,8 +125,8 @@ impl Query {
     }
 }
 
-#[test]
-fn test_doc_comment_simple() {
+#[tokio::test]
+async fn test_doc_comment_simple() {
     let mut registry: juniper::Registry = juniper::Registry::new(FnvHashMap::default());
     let meta = DocComment::meta(&(), &mut registry);
     assert_eq!(meta.description(), Some(&"Object comment.".to_string()));
@@ -136,11 +136,12 @@ fn test_doc_comment_simple() {
         &Value::scalar("Object comment."),
         "regularField",
         &Value::scalar("Field comment."),
-    );
+    )
+    .await;
 }
 
-#[test]
-fn test_multi_doc_comment() {
+#[tokio::test]
+async fn test_multi_doc_comment() {
     let mut registry: juniper::Registry = juniper::Registry::new(FnvHashMap::default());
     let meta = MultiDocComment::meta(&(), &mut registry);
     assert_eq!(
@@ -153,11 +154,12 @@ fn test_multi_doc_comment() {
         &Value::scalar("Doc 1. Doc 2.\n\nDoc 4."),
         "regularField",
         &Value::scalar("Field 1.\nField 2."),
-    );
+    )
+    .await;
 }
 
-#[test]
-fn test_doc_comment_override() {
+#[tokio::test]
+async fn test_doc_comment_override() {
     let mut registry: juniper::Registry = juniper::Registry::new(FnvHashMap::default());
     let meta = OverrideDocComment::meta(&(), &mut registry);
     assert_eq!(meta.description(), Some(&"obj override".to_string()));
@@ -167,7 +169,8 @@ fn test_doc_comment_override() {
         &Value::scalar("obj override"),
         "regularField",
         &Value::scalar("field override"),
-    );
+    )
+    .await;
 }
 
 #[tokio::test]
@@ -291,7 +294,7 @@ async fn test_derived_object_nested() {
 }
 
 #[cfg(test)]
-fn check_descriptions(
+async fn check_descriptions(
     object_name: &str,
     object_description: &Value,
     field_name: &str,
@@ -329,7 +332,8 @@ fn check_descriptions(
             .into_iter()
             .collect(),
         )));
-    });
+    })
+    .await;
 }
 
 #[cfg(test)]
diff --git a/integration_tests/juniper_tests/src/codegen/derive_object_with_raw_idents.rs b/integration_tests/juniper_tests/src/codegen/derive_object_with_raw_idents.rs
index 5130bc6f..45d79630 100644
--- a/integration_tests/juniper_tests/src/codegen/derive_object_with_raw_idents.rs
+++ b/integration_tests/juniper_tests/src/codegen/derive_object_with_raw_idents.rs
@@ -1,12 +1,6 @@
-#[cfg(test)]
-use fnv::FnvHashMap;
-#[cfg(test)]
-use juniper::Object;
-
 #[cfg(test)]
 use juniper::{
-    self, execute, graphql_value, DefaultScalarValue, EmptyMutation, GraphQLInputObject,
-    GraphQLType, RootNode, Value, Variables,
+    self, execute, graphql_value, EmptyMutation, GraphQLInputObject, RootNode, Value, Variables,
 };
 
 use futures;
diff --git a/integration_tests/juniper_tests/src/issue_371.rs b/integration_tests/juniper_tests/src/issue_371.rs
index b29296b3..e2bcdf06 100644
--- a/integration_tests/juniper_tests/src/issue_371.rs
+++ b/integration_tests/juniper_tests/src/issue_371.rs
@@ -14,13 +14,13 @@ pub struct Query;
 )]
 impl Query {
     fn users(exec: &Executor) -> Vec<User> {
-        let lh = executor.look_ahead();
+        let lh = exec.look_ahead();
         assert_eq!(lh.field_name(), "users");
         vec![User]
     }
 
     fn countries(exec: &Executor) -> Vec<Country> {
-        let lh = executor.look_ahead();
+        let lh = exec.look_ahead();
         assert_eq!(lh.field_name(), "countries");
         vec![Country]
     }
diff --git a/juniper/src/executor/mod.rs b/juniper/src/executor/mod.rs
index ce7c831d..5b3d29fb 100644
--- a/juniper/src/executor/mod.rs
+++ b/juniper/src/executor/mod.rs
@@ -2,7 +2,7 @@ use std::{
     borrow::Cow,
     cmp::Ordering,
     collections::HashMap,
-    fmt::{self, Debug, Display},
+    fmt::{Debug, Display},
     sync::RwLock,
 };
 
diff --git a/juniper/src/executor_tests/async_await/mod.rs b/juniper/src/executor_tests/async_await/mod.rs
index ffaf0ae7..28d5fb73 100644
--- a/juniper/src/executor_tests/async_await/mod.rs
+++ b/juniper/src/executor_tests/async_await/mod.rs
@@ -8,13 +8,17 @@ enum UserKind {
 }
 
 struct User {
-    id: u64,
+    id: i32,
     name: String,
     kind: UserKind,
 }
 
 #[crate::graphql_object_internal]
 impl User {
+    async fn id(&self) -> i32 {
+        self.id
+    }
+
     async fn name(&self) -> &str {
         &self.name
     }
diff --git a/juniper/src/executor_tests/executor.rs b/juniper/src/executor_tests/executor.rs
index 111eee19..0b14f1ba 100644
--- a/juniper/src/executor_tests/executor.rs
+++ b/juniper/src/executor_tests/executor.rs
@@ -464,7 +464,7 @@ mod dynamic_context_switching {
 
     #[crate::graphql_object_internal(Context = OuterContext)]
     impl Schema {
-        fn item_opt(context: &OuterContext, key: i32) -> Option<(&InnerContext, ItemRef)> {
+        fn item_opt(_context: &OuterContext, key: i32) -> Option<(&InnerContext, ItemRef)> {
             executor.context().items.get(&key).map(|c| (c, ItemRef))
         }
 
@@ -1085,6 +1085,7 @@ mod named_operations {
     #[crate::graphql_object_internal]
     impl Schema {
         fn a(p: Option<String>) -> &str {
+            dbg!(p);
             "b"
         }
     }
diff --git a/juniper/src/http/mod.rs b/juniper/src/http/mod.rs
index 03ddda2a..1209780e 100644
--- a/juniper/src/http/mod.rs
+++ b/juniper/src/http/mod.rs
@@ -93,6 +93,10 @@ where
         ))
     }
 
+    /// Execute a GraphQL request using the specified schema and context
+    ///
+    /// This is a simple wrapper around the `execute` function exposed at the
+    /// top level of this crate.
     pub async fn execute<'a, CtxT, QueryT, MutationT>(
         &'a self,
         root_node: &'a RootNode<'a, QueryT, MutationT, S>,
diff --git a/juniper/src/macros/tests/args.rs b/juniper/src/macros/tests/args.rs
index 6a355376..f7292355 100644
--- a/juniper/src/macros/tests/args.rs
+++ b/juniper/src/macros/tests/args.rs
@@ -23,7 +23,7 @@ Syntax to validate:
 
 */
 
-#[derive(GraphQLInputObject)]
+#[derive(GraphQLInputObject, Debug)]
 struct Point {
     x: i32,
 }
@@ -33,28 +33,28 @@ impl Root {
     fn simple() -> i32 {
         0
     }
-    fn exec_arg(executor: &Executor) -> i32 {
+    fn exec_arg(_executor: &Executor) -> i32 {
         0
     }
-    fn exec_arg_and_more(executor: &Executor, arg: i32) -> i32 {
-        0
+    fn exec_arg_and_more(_executor: &Executor, arg: i32) -> i32 {
+        arg
     }
 
     fn single_arg(arg: i32) -> i32 {
-        0
+        arg
     }
 
     fn multi_args(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     fn multi_args_trailing_comma(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     #[graphql(arguments(arg(description = "The arg")))]
     fn single_arg_descr(arg: i32) -> i32 {
-        0
+        arg
     }
 
     #[graphql(arguments(
@@ -62,7 +62,7 @@ impl Root {
         arg2(description = "The second arg")
     ))]
     fn multi_args_descr(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     #[graphql(arguments(
@@ -70,7 +70,7 @@ impl Root {
         arg2(description = "The second arg")
     ))]
     fn multi_args_descr_trailing_comma(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     // TODO: enable once [parameter attributes are supported by proc macros]
@@ -87,22 +87,22 @@ impl Root {
 
     #[graphql(arguments(arg(default = 123,),))]
     fn arg_with_default(arg: i32) -> i32 {
-        0
+        arg
     }
 
     #[graphql(arguments(arg1(default = 123,), arg2(default = 456,)))]
     fn multi_args_with_default(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     #[graphql(arguments(arg1(default = 123,), arg2(default = 456,),))]
     fn multi_args_with_default_trailing_comma(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     #[graphql(arguments(arg(default = 123, description = "The arg")))]
     fn arg_with_default_descr(arg: i32) -> i32 {
-        0
+        arg
     }
 
     #[graphql(arguments(
@@ -110,7 +110,7 @@ impl Root {
         arg2(default = 456, description = "The second arg")
     ))]
     fn multi_args_with_default_descr(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     #[graphql(arguments(
@@ -118,7 +118,7 @@ impl Root {
         arg2(default = 456, description = "The second arg",)
     ))]
     fn multi_args_with_default_trailing_comma_descr(arg1: i32, arg2: i32) -> i32 {
-        0
+        arg1 + arg2
     }
 
     #[graphql(
@@ -134,6 +134,8 @@ impl Root {
         ),
     )]
     fn args_with_complex_default(arg1: String, arg2: Point) -> i32 {
+        dbg!(arg1);
+        dbg!(arg2);
         0
     }
 }
diff --git a/juniper/src/types/containers.rs b/juniper/src/types/containers.rs
index 50cecac8..399163d2 100644
--- a/juniper/src/types/containers.rs
+++ b/juniper/src/types/containers.rs
@@ -256,7 +256,7 @@ where
     fn resolve_async<'a>(
         &'a self,
         info: &'a Self::TypeInfo,
-        selection_set: Option<&'a [Selection<S>]>,
+        _selection_set: Option<&'a [Selection<S>]>,
         executor: &'a Executor<Self::Context, S>,
     ) -> crate::BoxFuture<'a, ExecutionResult<S>> {
         let f = resolve_into_list_async(executor, info, self.iter());
@@ -274,7 +274,7 @@ where
     fn resolve_async<'a>(
         &'a self,
         info: &'a Self::TypeInfo,
-        selection_set: Option<&'a [Selection<S>]>,
+        _selection_set: Option<&'a [Selection<S>]>,
         executor: &'a Executor<Self::Context, S>,
     ) -> crate::BoxFuture<'a, ExecutionResult<S>> {
         let f = resolve_into_list_async(executor, info, self.iter());
@@ -292,7 +292,7 @@ where
     fn resolve_async<'a>(
         &'a self,
         info: &'a Self::TypeInfo,
-        selection_set: Option<&'a [Selection<S>]>,
+        _selection_set: Option<&'a [Selection<S>]>,
         executor: &'a Executor<Self::Context, S>,
     ) -> crate::BoxFuture<'a, ExecutionResult<S>> {
         let f = async move {