Merge #1469

1469: Allow a new macro hygiene lint until we get Diesel 1.4 r=jtgeibel a=jtgeibel

Because we deny warnings, this new lint will cause our CI to fail once
it hits beta.  Allowing `unknown_lints` is necessary because
stable-1.28 isn't aware of this lint.

This patch can be reverted as part of upgrading to Diesel 1.4 once that
is released.  See the [upstream PR] for more information.

[upstream PR]: diesel-rs/diesel#1787

Co-authored-by: Justin Geibel <[email protected]>

Author: bors-voyager[bot]

src/bin/update-downloads.rs

@@ -1,4 +1,5 @@
 #![deny(warnings)]
+#![allow(unknown_lints, proc_macro_derive_resolution_fallback)] // This can be removed after diesel-1.4
 
 extern crate cargo_registry;
 #[macro_use]

src/lib.rs

@@ -7,6 +7,7 @@
 #![deny(missing_debug_implementations, missing_copy_implementations)]
 #![deny(bare_trait_objects)]
 #![recursion_limit = "128"]
+#![allow(unknown_lints, proc_macro_derive_resolution_fallback)] // This can be removed after diesel-1.4
 
 extern crate ammonia;
 extern crate chrono;

src/tests/all.rs

@@ -1,4 +1,5 @@
 #![deny(warnings)]
+#![allow(unknown_lints, proc_macro_derive_resolution_fallback)] // This can be removed after diesel-1.4
 
 extern crate cargo_registry;
 extern crate chrono;