style: introduce workspace-wide lint tables

Author: rami3l

Cargo.toml

@@ -130,6 +130,9 @@ trycmd = "0.15.0"
 platforms.workspace = true
 regex = "1"
 
+[lints]
+workspace = true
+
 [workspace]
 members = ["download"]
 
@@ -158,6 +161,9 @@ tracing-subscriber = "0.3.16"
 url = "2.4"
 walkdir = "2"
 
+[workspace.lints.rust]
+rust_2018_idioms = "deny"
+
 [lib]
 name = "rustup"
 path = "src/lib.rs"

download/Cargo.toml

@@ -32,3 +32,6 @@ http-body-util = "0.1.0"
 hyper = { version = "1.0", default-features = false, features = ["server", "http1"] }
 hyper-util = { version = "0.1.1", features = ["tokio"] }
 tempfile.workspace = true
+
+[lints]
+workspace = true

download/src/lib.rs

@@ -1,5 +1,4 @@
 //! Easy file downloading
-#![deny(rust_2018_idioms)]
 
 use std::fs::remove_file;
 use std::path::Path;

src/lib.rs

@@ -1,4 +1,3 @@
-#![deny(rust_2018_idioms)]
 #![allow(
     clippy::type_complexity,
     clippy::result_large_err, // 288 bytes is our 'large' variant today, which is unlikely to be a performance problem