Update ciphersuite/dkg MSRVs

Cargo.toml

@@ -160,6 +160,7 @@ directories-next = { path = "patches/directories-next" }
 [workspace.lints.clippy]
 unwrap_or_default = "allow"
 manual_is_multiple_of = "allow"
+incompatible_msrv = "allow" # Manually verified with a GitHub workflow
 borrow_as_ptr = "deny"
 cast_lossless = "deny"
 cast_possible_truncation = "deny"

crypto/ciphersuite/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/ciphersuite
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["ciphersuite", "ff", "group"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.73"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/ciphersuite/src/lib.rs

@@ -3,8 +3,11 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use core::fmt::Debug;
-#[cfg(any(feature = "alloc", feature = "std"))]
-use std_shims::io::{self, Read};
+#[allow(unused_imports)]
+use std_shims::{
+  prelude::*,
+  io::{self, Read},
+};
 
 use rand_core::{RngCore, CryptoRng};
 

crypto/dkg/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/dkg"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["dkg", "multisig", "threshold", "ff", "group"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.73"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/dkg/dealer/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/dkg/dealer"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["dkg", "multisig", "threshold", "ff", "group"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.73"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/dkg/recovery/Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/serai-dex/serai/tree/develop/crypto/dkg/recover
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 keywords = ["dkg", "multisig", "threshold", "ff", "group"]
 edition = "2021"
-rust-version = "1.74"
+rust-version = "1.73"
 
 [package.metadata.docs.rs]
 all-features = true

crypto/dkg/src/lib.rs

@@ -6,6 +6,8 @@ use core::{
   ops::Deref,
   fmt::{self, Debug},
 };
+#[allow(unused_imports)]
+use std_shims::prelude::*;
 use std_shims::{sync::Arc, vec, vec::Vec, collections::HashMap, io};
 
 use zeroize::{Zeroize, Zeroizing};