diff --git a/diesel/src/pg/types/floats/mod.rs b/diesel/src/pg/types/floats/mod.rs
index e5810b7837a3..47d7bca9aa0e 100644
--- a/diesel/src/pg/types/floats/mod.rs
+++ b/diesel/src/pg/types/floats/mod.rs
@@ -37,6 +37,7 @@ pub enum PgNumeric {
 }
 
 #[derive(Debug, Clone, Copy)]
+#[allow(dead_code)] // that's used by debug in the error impl
 struct InvalidNumericSign(u16);
 
 impl ::std::fmt::Display for InvalidNumericSign {
diff --git a/diesel/src/sqlite/connection/raw.rs b/diesel/src/sqlite/connection/raw.rs
index 9f31a58106a4..bf5e910d3fab 100644
--- a/diesel/src/sqlite/connection/raw.rs
+++ b/diesel/src/sqlite/connection/raw.rs
@@ -261,7 +261,7 @@ impl Drop for RawConnection {
 enum SqliteCallbackError {
     Abort(&'static str),
     DieselError(crate::result::Error),
-    Panic(Box<dyn std::any::Any + Send>, String),
+    Panic(String),
 }
 
 impl SqliteCallbackError {
@@ -273,7 +273,7 @@ impl SqliteCallbackError {
                 s = e.to_string();
                 &s
             }
-            SqliteCallbackError::Panic(_, msg) => msg,
+            SqliteCallbackError::Panic(msg) => msg,
         };
         unsafe {
             context_error_str(ctx, msg);
@@ -347,12 +347,7 @@ extern "C" fn run_custom_function<F, Ret, RetSqlType>(
         }
         Ok(())
     })
-    .unwrap_or_else(|p| {
-        Err(SqliteCallbackError::Panic(
-            p,
-            data_ptr.function_name.clone(),
-        ))
-    });
+    .unwrap_or_else(|p| Err(SqliteCallbackError::Panic(data_ptr.function_name.clone())));
     if let Err(e) = result {
         e.emit(ctx);
     }
@@ -383,10 +378,10 @@ extern "C" fn run_aggregator_step_function<ArgsSqlType, RetSqlType, Args, Ret, A
         run_aggregator_step::<A, Args, ArgsSqlType>(ctx, args)
     })
     .unwrap_or_else(|e| {
-        Err(SqliteCallbackError::Panic(
-            e,
-            format!("{}::step() panicked", std::any::type_name::<A>()),
-        ))
+        Err(SqliteCallbackError::Panic(format!(
+            "{}::step() panicked",
+            std::any::type_name::<A>()
+        )))
     });
 
     match result {
@@ -496,11 +491,11 @@ extern "C" fn run_aggregator_final_function<ArgsSqlType, RetSqlType, Args, Ret,
         }
         Ok(())
     })
-    .unwrap_or_else(|e| {
-        Err(SqliteCallbackError::Panic(
-            e,
-            format!("{}::finalize() panicked", std::any::type_name::<A>()),
-        ))
+    .unwrap_or_else(|_e| {
+        Err(SqliteCallbackError::Panic(format!(
+            "{}::finalize() panicked",
+            std::any::type_name::<A>()
+        )))
     });
     if let Err(e) = result {
         e.emit(ctx);
@@ -570,7 +565,6 @@ where
     })
     .unwrap_or_else(|p| {
         Err(SqliteCallbackError::Panic(
-            p,
             user_ptr
                 .map(|u| u.collation_name.clone())
                 .unwrap_or_default(),
@@ -601,7 +595,7 @@ where
             );
             std::process::abort()
         }
-        Err(SqliteCallbackError::Panic(_, msg)) => {
+        Err(SqliteCallbackError::Panic(msg)) => {
             eprintln!("Collation function {} panicked", msg);
             std::process::abort()
         }
diff --git a/diesel_derives/src/parsers/belongs_to.rs b/diesel_derives/src/parsers/belongs_to.rs
index 50e00957c2d2..653e30deecfa 100644
--- a/diesel_derives/src/parsers/belongs_to.rs
+++ b/diesel_derives/src/parsers/belongs_to.rs
@@ -6,7 +6,7 @@ use syn::{Ident, TypePath};
 use crate::util::{parse_eq, unknown_attribute, BELONGS_TO_NOTE};
 
 enum Attr {
-    ForeignKey(Ident, Ident),
+    ForeignKey(Ident),
 }
 
 impl Parse for Attr {
@@ -15,7 +15,7 @@ impl Parse for Attr {
         let name_str = name.to_string();
 
         match &*name_str {
-            "foreign_key" => Ok(Attr::ForeignKey(name, parse_eq(input, BELONGS_TO_NOTE)?)),
+            "foreign_key" => Ok(Attr::ForeignKey(parse_eq(input, BELONGS_TO_NOTE)?)),
 
             _ => Err(unknown_attribute(&name, &["foreign_key"])),
         }
@@ -39,7 +39,7 @@ impl Parse for BelongsTo {
 
         for attr in Punctuated::<Attr, Comma>::parse_terminated(input)? {
             match attr {
-                Attr::ForeignKey(_, value) => foreign_key = Some(value),
+                Attr::ForeignKey(value) => foreign_key = Some(value),
             }
         }
 
diff --git a/diesel_derives/src/parsers/mysql_type.rs b/diesel_derives/src/parsers/mysql_type.rs
index baa2dbe66e2f..0266d9598175 100644
--- a/diesel_derives/src/parsers/mysql_type.rs
+++ b/diesel_derives/src/parsers/mysql_type.rs
@@ -6,7 +6,7 @@ use syn::{Ident, LitStr};
 use crate::util::{parse_eq, unknown_attribute, MYSQL_TYPE_NOTE};
 
 enum Attr {
-    Name(Ident, LitStr),
+    Name(LitStr),
 }
 
 impl Parse for Attr {
@@ -15,7 +15,7 @@ impl Parse for Attr {
         let name_str = name.to_string();
 
         match &*name_str {
-            "name" => Ok(Attr::Name(name, parse_eq(input, MYSQL_TYPE_NOTE)?)),
+            "name" => Ok(Attr::Name(parse_eq(input, MYSQL_TYPE_NOTE)?)),
 
             _ => Err(unknown_attribute(&name, &["name"])),
         }
@@ -32,7 +32,7 @@ impl Parse for MysqlType {
 
         for attr in Punctuated::<Attr, Comma>::parse_terminated(input)? {
             match attr {
-                Attr::Name(_, value) => name = Some(value),
+                Attr::Name(value) => name = Some(value),
             }
         }
 
diff --git a/diesel_derives/src/parsers/sqlite_type.rs b/diesel_derives/src/parsers/sqlite_type.rs
index 063ed65f4734..a2b190c39874 100644
--- a/diesel_derives/src/parsers/sqlite_type.rs
+++ b/diesel_derives/src/parsers/sqlite_type.rs
@@ -6,7 +6,7 @@ use syn::{Ident, LitStr};
 use crate::util::{parse_eq, unknown_attribute, SQLITE_TYPE_NOTE};
 
 enum Attr {
-    Name(Ident, LitStr),
+    Name(LitStr),
 }
 
 impl Parse for Attr {
@@ -15,7 +15,7 @@ impl Parse for Attr {
         let name_str = name.to_string();
 
         match &*name_str {
-            "name" => Ok(Attr::Name(name, parse_eq(input, SQLITE_TYPE_NOTE)?)),
+            "name" => Ok(Attr::Name(parse_eq(input, SQLITE_TYPE_NOTE)?)),
 
             _ => Err(unknown_attribute(&name, &["name"])),
         }
@@ -32,7 +32,7 @@ impl Parse for SqliteType {
 
         for attr in Punctuated::<Attr, Comma>::parse_terminated(input)? {
             match attr {
-                Attr::Name(_, value) => name = Some(value),
+                Attr::Name(value) => name = Some(value),
             }
         }
 
diff --git a/diesel_tests/tests/insert_from_select.rs b/diesel_tests/tests/insert_from_select.rs
index 582ccd60d6ba..edf14da6fdac 100644
--- a/diesel_tests/tests/insert_from_select.rs
+++ b/diesel_tests/tests/insert_from_select.rs
@@ -395,6 +395,7 @@ fn on_conflict_do_update_with_boxed_select() {
 
     users
         .select((id, name.concat(" says hi")))
+        .order(id)
         .into_boxed()
         .insert_into(posts)
         .into_columns((user_id, title))
@@ -411,6 +412,7 @@ fn on_conflict_do_update_with_boxed_select() {
 
     users
         .select((id, name.concat(" says hi")))
+        .order(id)
         .into_boxed()
         .insert_into(posts)
         .into_columns((user_id, title))