Remove unused imports and a couple unused muts

sqlx-core/src/mysql/connection.rs

@@ -121,7 +121,7 @@ impl MySqlConnection {
         // We must have a separate buffer around the stream as we can't operate directly
         // on bytes returned from the stream. We have various kinds of payload manipulation
         // that must be handled before decoding.
-        let mut payload = ret_if_none!(self.stream.peek(self.packet_len).await?);
+        let payload = ret_if_none!(self.stream.peek(self.packet_len).await?);
         self.packet.extend_from_slice(payload);
         self.stream.consume(self.packet_len);
 

sqlx-core/src/mysql/types/chrono.rs

@@ -1,6 +1,6 @@
 use std::convert::TryFrom;
 
-use byteorder::{BigEndian, ByteOrder, LittleEndian};
+use byteorder::{ByteOrder, LittleEndian};
 use chrono::{DateTime, Datelike, NaiveDate, NaiveDateTime, NaiveTime, Timelike, Utc};
 
 use crate::decode::{Decode, DecodeError};

sqlx-core/src/mysql/types/int.rs

@@ -22,7 +22,7 @@ impl Encode<MySql> for i8 {
 }
 
 impl Decode<MySql> for i8 {
-    fn decode(mut buf: &[u8]) -> Result<Self, DecodeError> {
+    fn decode(buf: &[u8]) -> Result<Self, DecodeError> {
         Ok(buf[0] as i8)
     }
 }

sqlx-macros/src/lib.rs

@@ -10,13 +10,14 @@ use proc_macro_hack::proc_macro_hack;
 
 use quote::quote;
 
-use syn::{parse, parse_macro_input};
+use syn::parse_macro_input;
 
 use async_std::task;
 
 use url::Url;
 
 type Error = Box<dyn std::error::Error>;
+
 type Result<T> = std::result::Result<T, Error>;
 
 mod database;

sqlx-macros/src/query_macros/args.rs

@@ -1,5 +1,3 @@
-use std::path::Path;
-
 use proc_macro2::TokenStream;
 use quote::{quote, quote_spanned, ToTokens};
 use syn::spanned::Spanned;

sqlx-macros/src/query_macros/input.rs

@@ -5,7 +5,7 @@ use proc_macro2::Span;
 use syn::parse::{Parse, ParseStream};
 use syn::punctuated::Punctuated;
 use syn::Token;
-use syn::{Expr, ExprLit, ExprPath, Lit, Path};
+use syn::{Expr, ExprLit, ExprPath, Lit};
 
 use sqlx::describe::Describe;
 use sqlx::Connection;

sqlx-macros/src/query_macros/mod.rs

@@ -1,14 +1,13 @@
 use std::fmt::Display;
 
-use proc_macro2::{Ident, Span, TokenStream};
-use quote::{format_ident, quote};
+use proc_macro2::TokenStream;
+use quote::quote;
 
 pub use input::{QueryAsMacroInput, QueryMacroInput};
 pub use query::expand_query;
 
 use crate::database::DatabaseExt;
 
-use sqlx::describe::Describe;
 use sqlx::types::HasTypeMetadata;
 use sqlx::Connection;
 

sqlx-macros/src/query_macros/output.rs

@@ -1,6 +1,6 @@
 use proc_macro2::{Ident, TokenStream};
 use quote::quote;
-use syn::{Path, Token};
+use syn::Path;
 
 use sqlx::describe::Describe;
 

sqlx-macros/src/query_macros/query.rs

@@ -2,18 +2,13 @@ use std::fmt::Display;
 
 use proc_macro2::Span;
 use proc_macro2::TokenStream;
-use syn::{
-    parse::{self, Parse, ParseStream},
-    punctuated::Punctuated,
-    spanned::Spanned,
-    Expr, ExprLit, Ident, Lit, Path, Token,
-};
+use syn::{Ident, Path};
 
-use quote::{format_ident, quote, quote_spanned, ToTokens};
-use sqlx::{describe::Describe, types::HasTypeMetadata, Connection};
+use quote::quote;
+use sqlx::{types::HasTypeMetadata, Connection};
 
 use super::{args, output, QueryMacroInput};
-use crate::database::{DatabaseExt, ParamChecking};
+use crate::database::DatabaseExt;
 
 /// Given an input like `query!("SELECT * FROM accounts WHERE account_id > ?", account_id)`,
 /// expand to an anonymous record