Prepare UI tests for rust 1.55 (#9637)

* Prepare UI tests for rust 1.54

* Delete wrong_page.stderr

* CI: run with a staging CI image

* Revert "CI: run with a staging CI image"

This reverts commit 66f5b00d14b50fd9d8fbf773f7e884f380697591.

* CI: debug, again

* LOG_TARGET is only used in std

* Remove unnecessary unsafe

* Fixes

* Use correct rustc locally

* FMT

* Compile with benchmarking

* Review feedback

* Some ui tests

* I know...

* Fix wasm tests

Co-authored-by: Denis P <denis.pisarev@parity.io>
Co-authored-by: thiolliere <gui.thiolliere@gmail.com>

substrate/frame/support/src/traits/hooks.rs

@@ -19,7 +19,7 @@
 
 use impl_trait_for_tuples::impl_for_tuples;
 use sp_arithmetic::traits::Saturating;
-use sp_runtime::traits::{AtLeast32BitUnsigned, MaybeSerializeDeserialize};
+use sp_runtime::traits::AtLeast32BitUnsigned;
 
 /// The block initialization trait.
 ///
@@ -294,7 +294,7 @@ pub trait Hooks<BlockNumber> {
 /// A trait to define the build function of a genesis config, T and I are placeholder for pallet
 /// trait and pallet instance.
 #[cfg(feature = "std")]
-pub trait GenesisBuild<T, I = ()>: Default + MaybeSerializeDeserialize {
+pub trait GenesisBuild<T, I = ()>: Default + sp_runtime::traits::MaybeSerializeDeserialize {
 	/// The build function is called within an externalities allowing storage APIs.
 	/// Thus one can write to storage using regular pallet storages.
 	fn build(&self);