feat: set internal warnings as errors

crates/dagger-core/src/downloader.rs

@@ -1,6 +1,6 @@
 use std::{
     fs::File,
-    io::{copy, Read, Write},
+    io::{copy, Write},
     os::unix::prelude::PermissionsExt,
     path::PathBuf,
 };

crates/dagger-core/src/introspection.rs

@@ -241,6 +241,7 @@ pub struct SchemaTypes {
     pub full_type: FullType,
 }
 
+#[allow(dead_code)]
 #[derive(Clone, Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct SchemaDirectivesArgs {
@@ -257,6 +258,7 @@ pub struct SchemaDirectives {
     pub args: Option<Vec<Option<SchemaDirectivesArgs>>>,
 }
 
+#[allow(dead_code)]
 #[derive(Clone, Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Schema {

crates/dagger-core/src/lib.rs

@@ -1,3 +1,5 @@
+#![deny(warnings)]
+
 pub mod cli_session;
 pub mod config;
 pub mod connect_params;