Fix clippy pedantic lints

src/cmds/extras.rs

@@ -1,6 +1,7 @@
 use crate::{db, ACtx, Error, Gaijin};
 use poise::serenity_prelude as serenity;
 use poise::Modal;
+use std::fmt::Write;
 
 /// Get the number of entries in the gaijin table
 #[tracing::instrument(skip_all)]
@@ -117,10 +118,10 @@ pub(crate) async fn get_gaijin_by_name(ctx: ACtx<'_>, name: String) -> Result<()
         } else {
             ctx.say(format!(
                 "Possible matches for {name}: {}",
-                gaijin
+                gaijin.iter().fold(String::new(), |mut s, g| {
-                    .iter()
+                    write!(s, " <@{}>", g.discord_id).expect("String write! is infallible");
-                    .map(|g| format!(" <@{}>", g.discord_id))
+                    s
-                    .collect::<String>()
+                })
             ))
             .await?;
         }

src/cmds/whois.rs

@@ -1,5 +1,6 @@
 use crate::{db, ACtx, Error};
 use poise::serenity_prelude as serenity;
+use std::fmt::Write;
 
 /// Unreachable, used to create whois command folder
 #[allow(clippy::unused_async)]
@@ -55,10 +56,10 @@ pub(crate) async fn whois_by_nickname(ctx: ACtx<'_>, nickname: String) -> Result
             ctx.send(|c| {
                 c.ephemeral(true).content(format!(
                     "Possible matches for {nickname}: {}",
-                    members
+                    members.iter().fold(String::new(), |mut s, g| {
-                        .iter()
+                        write!(s, " <@{}>", g.discord_id).expect("String write! is infallible");
-                        .map(|m| format!(" <@{}>", m.discord_id))
+                        s
-                        .collect::<String>()
+                    })
                 ))
             })
             .await?;
@@ -90,10 +91,10 @@ pub(crate) async fn whois_by_realname(ctx: ACtx<'_>, realname: String) -> Result
             ctx.send(|c| {
                 c.ephemeral(true).content(format!(
                     "Possible matches for {realname}: {}",
-                    members
+                    members.iter().fold(String::new(), |mut s, g| {
-                        .iter()
+                        write!(s, " <@{}>", g.discord_id).expect("String write! is infallible");
-                        .map(|m| format!(" <@{}>", m.discord_id))
+                        s
-                        .collect::<String>()
+                    })
                 ))
             })
             .await?;

src/routes.rs

@@ -41,7 +41,7 @@ pub(crate) async fn verify(
                 )
                 .await
                 {
-                    Ok(_) => {
+                    Ok(()) => {
                         tracing::info!(
                             "ID {} added: {}, {}",
                             id,