Remove Display trait

Inline match command to subcommand for make_cargo_build_command

src/command.rs

@@ -1,5 +1,4 @@
 use clap::{AppSettings, Args, Parser, ValueEnum};
-use std::fmt::{Display, Formatter};
 
 #[derive(Parser)]
 #[clap(name = "cargo")]
@@ -35,14 +34,3 @@ impl CargoCommand {
         )
     }
 }
-
-impl Display for CargoCommand {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        match self {
-            CargoCommand::Build | CargoCommand::Run => write!(f, "build"),
-            CargoCommand::Test => write!(f, "test"),
-            CargoCommand::Check => write!(f, "check"),
-            CargoCommand::Clippy => write!(f, "clippy"),
-        }
-    }
-}

src/lib.rs

@@ -118,9 +118,16 @@ pub fn make_cargo_build_command(
         command.arg("-Z").arg("build-std");
     }
 
+    let cmd = match cmd {
+        CargoCommand::Build | CargoCommand::Run => "build",
+        CargoCommand::Test => "test",
+        CargoCommand::Check => "check",
+        CargoCommand::Clippy => "clippy",
+    };
+
     command
         .env("RUSTFLAGS", rust_flags)
-        .arg(&cmd.to_string())
+        .arg(cmd)
         .arg("--target")
         .arg("armv6k-nintendo-3ds")
         .arg("--message-format")