Rust 1.80

Preserves the fn accessors within the Monero crates so that we can use statics
in some cfgs yet not all (in order to provide support for more low-memory
devices) with the exception of `H` (which truly should be cached).

common/std-shims/Cargo.toml

@@ -17,7 +17,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 workspace = true
 
 [dependencies]
-spin = { version = "0.9", default-features = false, features = ["use_ticket_mutex", "once"] }
+spin = { version = "0.9", default-features = false, features = ["use_ticket_mutex", "lazy"] }
 hashbrown = { version = "0.14", default-features = false, features = ["ahash", "inline-more"] }
 
 [features]

common/std-shims/src/sync.rs

@@ -26,27 +26,6 @@ mod mutex_shim {
 pub use mutex_shim::{ShimMutex as Mutex, MutexGuard};
 
 #[cfg(feature = "std")]
-pub use std::sync::OnceLock;
+pub use std::sync::LazyLock;
 #[cfg(not(feature = "std"))]
-mod oncelock_shim {
-  use spin::Once;
-
-  pub struct OnceLock<T>(Once<T>);
-  impl<T> OnceLock<T> {
-    pub const fn new() -> OnceLock<T> {
-      OnceLock(Once::new())
-    }
-    pub fn get(&self) -> Option<&T> {
-      self.0.poll()
-    }
-    pub fn get_mut(&mut self) -> Option<&mut T> {
-      self.0.get_mut()
-    }
-
-    pub fn get_or_init<F: FnOnce() -> T>(&self, f: F) -> &T {
-      self.0.call_once(f)
-    }
-  }
-}
-#[cfg(not(feature = "std"))]
-pub use oncelock_shim::*;
+pub use spin::Lazy as LazyLock;

networks/bitcoin/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/bitcoin"
 authors = ["Luke Parker <lukeparker5132@gmail.com>", "Vrx <vrx00@proton.me>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/bitcoin/tests/runner.rs

@@ -1,14 +1,11 @@
-use std::sync::OnceLock;
+use std::sync::LazyLock;
 
 use bitcoin_serai::rpc::Rpc;
 
 use tokio::sync::Mutex;
 
-static SEQUENTIAL_CELL: OnceLock<Mutex<()>> = OnceLock::new();
-#[allow(non_snake_case)]
-pub fn SEQUENTIAL() -> &'static Mutex<()> {
-  SEQUENTIAL_CELL.get_or_init(|| Mutex::new(()))
-}
+#[allow(dead_code)]
+pub(crate) static SEQUENTIAL: LazyLock<Mutex<()>> = LazyLock::new(|| Mutex::new(()));
 
 #[allow(dead_code)]
 pub(crate) async fn rpc() -> Rpc {
@@ -34,7 +31,7 @@ macro_rules! async_sequential {
     $(
       #[tokio::test]
       async fn $name() {
-        let guard = runner::SEQUENTIAL().lock().await;
+        let guard = runner::SEQUENTIAL.lock().await;
         let local = tokio::task::LocalSet::new();
         local.run_until(async move {
           if let Err(err) = tokio::task::spawn_local(async move { $body }).await {

networks/monero/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/generators/src/lib.rs

@@ -3,7 +3,7 @@
 #![deny(missing_docs)]
 #![cfg_attr(not(feature = "std"), no_std)]
 
-use std_shims::{sync::OnceLock, vec::Vec};
+use std_shims::{sync::LazyLock, vec::Vec};
 
 use sha3::{Digest, Keccak256};
 
@@ -21,33 +21,30 @@ fn keccak256(data: &[u8]) -> [u8; 32] {
   Keccak256::digest(data).into()
 }
 
-static H_CELL: OnceLock<EdwardsPoint> = OnceLock::new();
 /// Monero's `H` generator.
 ///
 /// Contrary to convention (`G` for values, `H` for randomness), `H` is used by Monero for amounts
 /// within Pedersen commitments.
 #[allow(non_snake_case)]
-pub fn H() -> EdwardsPoint {
-  *H_CELL.get_or_init(|| {
+pub static H: LazyLock<EdwardsPoint> = LazyLock::new(|| {
   decompress_point(keccak256(&ED25519_BASEPOINT_POINT.compress().to_bytes()))
     .unwrap()
     .mul_by_cofactor()
-  })
-}
+});
 
-static H_POW_2_CELL: OnceLock<[EdwardsPoint; 64]> = OnceLock::new();
+static H_POW_2_CELL: LazyLock<[EdwardsPoint; 64]> = LazyLock::new(|| {
+  let mut res = [*H; 64];
+  for i in 1 .. 64 {
+    res[i] = res[i - 1] + res[i - 1];
+  }
+  res
+});
 /// Monero's `H` generator, multiplied by 2**i for i in 1 ..= 64.
 ///
 /// This table is useful when working with amounts, which are u64s.
 #[allow(non_snake_case)]
 pub fn H_pow_2() -> &'static [EdwardsPoint; 64] {
-  H_POW_2_CELL.get_or_init(|| {
-    let mut res = [H(); 64];
-    for i in 1 .. 64 {
-      res[i] = res[i - 1] + res[i - 1];
-    }
-    res
-  })
+  &H_POW_2_CELL
 }
 
 /// The maximum amount of commitments provable for within a single range proof.
@@ -74,7 +71,7 @@ pub fn bulletproofs_generators(dst: &'static [u8]) -> Generators {
   // The maximum amount of bits used within a single range proof.
   const MAX_MN: usize = MAX_COMMITMENTS * COMMITMENT_BITS;
 
-  let mut preimage = H().compress().to_bytes().to_vec();
+  let mut preimage = H.compress().to_bytes().to_vec();
   preimage.extend(dst);
 
   let mut res = Generators { G: Vec::with_capacity(MAX_MN), H: Vec::with_capacity(MAX_MN) };

networks/monero/io/Cargo.toml

@@ -6,6 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/io"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/primitives/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/primitives"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/primitives/src/lib.rs

@@ -5,7 +5,7 @@
 
 use std_shims::{io, vec::Vec};
 #[cfg(feature = "std")]
-use std_shims::sync::OnceLock;
+use std_shims::sync::LazyLock;
 
 use zeroize::{Zeroize, ZeroizeOnDrop};
 
@@ -28,15 +28,15 @@ mod tests;
 
 // On std, we cache some variables in statics.
 #[cfg(feature = "std")]
-static INV_EIGHT_CELL: OnceLock<Scalar> = OnceLock::new();
-/// The inverse of 8 over l.
+static INV_EIGHT_CELL: LazyLock<Scalar> = LazyLock::new(|| Scalar::from(8u8).invert());
+/// The inverse of 8 over l, the prime factor of the order of Ed25519.
 #[cfg(feature = "std")]
 #[allow(non_snake_case)]
 pub fn INV_EIGHT() -> Scalar {
-  *INV_EIGHT_CELL.get_or_init(|| Scalar::from(8u8).invert())
+  *INV_EIGHT_CELL
 }
 // In no-std environments, we prefer the reduced memory use and calculate it ad-hoc.
-/// The inverse of 8 over l.
+/// The inverse of 8 over l, the prime factor of the order of Ed25519.
 #[cfg(not(feature = "std"))]
 #[allow(non_snake_case)]
 pub fn INV_EIGHT() -> Scalar {
@@ -44,12 +44,13 @@ pub fn INV_EIGHT() -> Scalar {
 }
 
 #[cfg(feature = "std")]
-static G_PRECOMP_CELL: OnceLock<VartimeEdwardsPrecomputation> = OnceLock::new();
+static G_PRECOMP_CELL: LazyLock<VartimeEdwardsPrecomputation> =
+  LazyLock::new(|| VartimeEdwardsPrecomputation::new([ED25519_BASEPOINT_POINT]));
 /// A cached (if std) pre-computation of the Ed25519 generator, G.
 #[cfg(feature = "std")]
 #[allow(non_snake_case)]
 pub fn G_PRECOMP() -> &'static VartimeEdwardsPrecomputation {
-  G_PRECOMP_CELL.get_or_init(|| VartimeEdwardsPrecomputation::new([ED25519_BASEPOINT_POINT]))
+  &G_PRECOMP_CELL
 }
 /// A cached (if std) pre-computation of the Ed25519 generator, G.
 #[cfg(not(feature = "std"))]
@@ -105,7 +106,7 @@ impl Commitment {
 
   /// Calculate the Pedersen commitment, as a point, from this transparent structure.
   pub fn calculate(&self) -> EdwardsPoint {
-    EdwardsPoint::vartime_double_scalar_mul_basepoint(&Scalar::from(self.amount), &H(), &self.mask)
+    EdwardsPoint::vartime_double_scalar_mul_basepoint(&Scalar::from(self.amount), &H, &self.mask)
   }
 
   /// Write the Commitment.

networks/monero/primitives/src/unreduced_scalar.rs

@@ -1,6 +1,6 @@
 use core::cmp::Ordering;
 use std_shims::{
-  sync::OnceLock,
+  sync::LazyLock,
   io::{self, *},
 };
 
@@ -10,18 +10,14 @@ use curve25519_dalek::scalar::Scalar;
 
 use monero_io::*;
 
-static PRECOMPUTED_SCALARS_CELL: OnceLock<[Scalar; 8]> = OnceLock::new();
 // Precomputed scalars used to recover an incorrectly reduced scalar.
-#[allow(non_snake_case)]
-fn PRECOMPUTED_SCALARS() -> [Scalar; 8] {
-  *PRECOMPUTED_SCALARS_CELL.get_or_init(|| {
+static PRECOMPUTED_SCALARS: LazyLock<[Scalar; 8]> = LazyLock::new(|| {
   let mut precomputed_scalars = [Scalar::ONE; 8];
   for (i, scalar) in precomputed_scalars.iter_mut().enumerate().skip(1) {
     *scalar = Scalar::from(u8::try_from((i * 2) + 1).unwrap());
   }
   precomputed_scalars
-  })
-}
+});
 
 /// An unreduced scalar.
 ///
@@ -127,14 +123,12 @@ impl UnreducedScalar {
       return Scalar::from_bytes_mod_order(self.0);
     }
 
-    let precomputed_scalars = PRECOMPUTED_SCALARS();
-
     let mut recovered = Scalar::ZERO;
     for &numb in self.non_adjacent_form().iter().rev() {
       recovered += recovered;
       match numb.cmp(&0) {
-        Ordering::Greater => recovered += precomputed_scalars[usize::try_from(numb).unwrap() / 2],
-        Ordering::Less => recovered -= precomputed_scalars[usize::try_from(-numb).unwrap() / 2],
+        Ordering::Greater => recovered += PRECOMPUTED_SCALARS[usize::try_from(numb).unwrap() / 2],
+        Ordering::Less => recovered -= PRECOMPUTED_SCALARS[usize::try_from(-numb).unwrap() / 2],
         Ordering::Equal => (),
       }
     }

networks/monero/ringct/borromean/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/ringct/borromean"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/ringct/bulletproofs/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/ringct/bulletproofs"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/ringct/bulletproofs/build.rs

@@ -40,17 +40,14 @@ fn generators(prefix: &'static str, path: &str) {
     .write_all(
       format!(
         "
-          static GENERATORS_CELL: OnceLock<Generators> = OnceLock::new();
-          pub(crate) fn GENERATORS() -> &'static Generators {{
-            GENERATORS_CELL.get_or_init(|| Generators {{
+          pub(crate) static GENERATORS: LazyLock<Generators> = LazyLock::new(|| Generators {{
             G: std_shims::vec![
               {G_str}
             ],
             H: std_shims::vec![
               {H_str}
             ],
-            }})
-          }}
+          }});
         ",
       )
       .as_bytes(),
@@ -67,12 +64,9 @@ fn generators(prefix: &'static str, path: &str) {
     .write_all(
       format!(
         r#"
-        static GENERATORS_CELL: OnceLock<Generators> = OnceLock::new();
-        pub(crate) fn GENERATORS() -> &'static Generators {{
-          GENERATORS_CELL.get_or_init(|| {{
+        pub(crate) static GENERATORS: LazyLock<Generators> = LazyLock::new(|| {{
           monero_generators::bulletproofs_generators(b"{prefix}")
-          }})
-        }}
+        }});
       "#,
       )
       .as_bytes(),

networks/monero/ringct/bulletproofs/src/batch_verifier.rs

@@ -7,7 +7,7 @@ use curve25519_dalek::{
   edwards::EdwardsPoint,
 };
 
-use monero_generators::{H, Generators};
+use monero_generators::{H as MONERO_H, Generators};
 
 use crate::{original, plus};
 
@@ -57,7 +57,7 @@ pub(crate) struct BulletproofsBatchVerifier(pub(crate) InternalBatchVerifier);
 impl BulletproofsBatchVerifier {
   #[must_use]
   pub(crate) fn verify(self) -> bool {
-    self.0.verify(ED25519_BASEPOINT_POINT, H(), original::GENERATORS())
+    self.0.verify(ED25519_BASEPOINT_POINT, *MONERO_H, &original::GENERATORS)
   }
 }
 
@@ -68,7 +68,7 @@ impl BulletproofsPlusBatchVerifier {
   pub(crate) fn verify(self) -> bool {
     // Bulletproofs+ is written as per the paper, with G for the value and H for the mask
     // Monero uses H for the value and G for the mask
-    self.0.verify(H(), ED25519_BASEPOINT_POINT, plus::GENERATORS())
+    self.0.verify(*MONERO_H, ED25519_BASEPOINT_POINT, &plus::GENERATORS)
   }
 }
 

networks/monero/ringct/bulletproofs/src/original/inner_product.rs

@@ -96,13 +96,13 @@ impl IpStatement {
     mut transcript: Scalar,
     witness: IpWitness,
   ) -> Result<IpProof, IpError> {
-    let generators = crate::original::GENERATORS();
+    let generators = &crate::original::GENERATORS;
     let g_bold_slice = &generators.G[.. witness.a.len()];
     let h_bold_slice = &generators.H[.. witness.a.len()];
 
     let (mut g_bold, mut h_bold, u, mut a, mut b) = {
       let IpStatement { h_bold_weights, u } = self;
-      let u = H() * u;
+      let u = *H * u;
 
       // Ensure we have the exact amount of weights
       if h_bold_weights.len() != g_bold_slice.len() {
@@ -218,7 +218,7 @@ impl IpStatement {
     verifier_weight: Scalar,
     proof: IpProof,
   ) -> Result<(), IpError> {
-    let generators = crate::original::GENERATORS();
+    let generators = &crate::original::GENERATORS;
     let g_bold_slice = &generators.G[.. ip_rows];
     let h_bold_slice = &generators.H[.. ip_rows];
 

networks/monero/ringct/bulletproofs/src/original/mod.rs

@@ -1,4 +1,4 @@
-use std_shims::{sync::OnceLock, vec::Vec};
+use std_shims::{sync::LazyLock, vec::Vec};
 
 use rand_core::{RngCore, CryptoRng};
 
@@ -6,7 +6,7 @@ use zeroize::Zeroize;
 
 use curve25519_dalek::{constants::ED25519_BASEPOINT_POINT, Scalar, EdwardsPoint};
 
-use monero_generators::{H, Generators, MAX_COMMITMENTS, COMMITMENT_BITS};
+use monero_generators::{H as MONERO_H, Generators, MAX_COMMITMENTS, COMMITMENT_BITS};
 use monero_primitives::{Commitment, INV_EIGHT, keccak256_to_scalar};
 use crate::{core::multiexp, scalar_vector::ScalarVector, BulletproofsBatchVerifier};
 
@@ -107,7 +107,7 @@ impl<'a> AggregateRangeStatement<'a> {
       None?
     };
 
-    let generators = GENERATORS();
+    let generators = &GENERATORS;
 
     let (mut transcript, _) = self.initial_transcript();
 
@@ -186,7 +186,7 @@ impl<'a> AggregateRangeStatement<'a> {
 
     let tau_1 = Scalar::random(&mut *rng);
     let T1 = {
-      let mut T1_terms = [(t1, H()), (tau_1, ED25519_BASEPOINT_POINT)];
+      let mut T1_terms = [(t1, *MONERO_H), (tau_1, ED25519_BASEPOINT_POINT)];
       for term in &mut T1_terms {
         term.0 *= INV_EIGHT();
       }
@@ -196,7 +196,7 @@ impl<'a> AggregateRangeStatement<'a> {
     };
     let tau_2 = Scalar::random(&mut *rng);
     let T2 = {
-      let mut T2_terms = [(t2, H()), (tau_2, ED25519_BASEPOINT_POINT)];
+      let mut T2_terms = [(t2, *MONERO_H), (tau_2, ED25519_BASEPOINT_POINT)];
       for term in &mut T2_terms {
         term.0 *= INV_EIGHT();
       }

networks/monero/ringct/bulletproofs/src/plus/mod.rs

@@ -1,6 +1,6 @@
 #![allow(non_snake_case)]
 
-use std_shims::sync::OnceLock;
+use std_shims::sync::LazyLock;
 
 use curve25519_dalek::{constants::ED25519_BASEPOINT_POINT, scalar::Scalar, edwards::EdwardsPoint};
 
@@ -39,7 +39,7 @@ include!(concat!(env!("OUT_DIR"), "/generators_plus.rs"));
 impl BpPlusGenerators {
   #[allow(clippy::new_without_default)]
   pub(crate) fn new() -> Self {
-    let gens = GENERATORS();
+    let gens = &GENERATORS;
     BpPlusGenerators { g_bold: &gens.G, h_bold: &gens.H }
   }
 
@@ -48,7 +48,7 @@ impl BpPlusGenerators {
   }
 
   pub(crate) fn g() -> EdwardsPoint {
-    H()
+    *H
   }
 
   pub(crate) fn h() -> EdwardsPoint {

networks/monero/ringct/bulletproofs/src/plus/transcript.rs

@@ -1,4 +1,4 @@
-use std_shims::{sync::OnceLock, vec::Vec};
+use std_shims::{sync::LazyLock, vec::Vec};
 
 use curve25519_dalek::{scalar::Scalar, edwards::EdwardsPoint};
 
@@ -6,15 +6,12 @@ use monero_generators::hash_to_point;
 use monero_primitives::{keccak256, keccak256_to_scalar};
 
 // Monero starts BP+ transcripts with the following constant.
-static TRANSCRIPT_CELL: OnceLock<[u8; 32]> = OnceLock::new();
-pub(crate) fn TRANSCRIPT() -> [u8; 32] {
-  // Why this uses a hash_to_point is completely unknown.
-  *TRANSCRIPT_CELL
-    .get_or_init(|| hash_to_point(keccak256(b"bulletproof_plus_transcript")).compress().to_bytes())
-}
+// Why this uses a hash_to_point is completely unknown.
+pub(crate) static TRANSCRIPT: LazyLock<[u8; 32]> =
+  LazyLock::new(|| hash_to_point(keccak256(b"bulletproof_plus_transcript")).compress().to_bytes());
 
 pub(crate) fn initial_transcript(commitments: core::slice::Iter<'_, EdwardsPoint>) -> Scalar {
   let commitments_hash =
     keccak256_to_scalar(commitments.flat_map(|V| V.compress().to_bytes()).collect::<Vec<_>>());
-  keccak256_to_scalar([TRANSCRIPT().as_ref(), &commitments_hash.to_bytes()].concat())
+  keccak256_to_scalar([TRANSCRIPT.as_ref(), &commitments_hash.to_bytes()].concat())
 }

networks/monero/ringct/bulletproofs/src/tests/original/inner_product.rs

@@ -35,12 +35,12 @@ fn test_zero_inner_product() {
 #[test]
 fn test_inner_product() {
   // P = sum(g_bold * a, h_bold * b, g * u * <a, b>)
-  let generators = GENERATORS();
+  let generators = &GENERATORS;
   let mut verifier = BulletproofsBatchVerifier::default();
   verifier.0.g_bold = vec![Scalar::ZERO; 32];
   verifier.0.h_bold = vec![Scalar::ZERO; 32];
   for i in [1, 2, 4, 8, 16, 32] {
-    let g = H();
+    let g = *H;
     let mut g_bold = vec![];
     let mut h_bold = vec![];
     for i in 0 .. i {

networks/monero/ringct/clsag/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/ringct/clsag"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/ringct/mlsag/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/ringct/mlsag"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/ringct/mlsag/src/lib.rs

@@ -203,7 +203,7 @@ impl AggregateRingMatrixBuilder {
     AggregateRingMatrixBuilder {
       key_ring: vec![],
       amounts_ring: vec![],
-      sum_out: commitments.iter().sum::<EdwardsPoint>() + (H() * Scalar::from(fee)),
+      sum_out: commitments.iter().sum::<EdwardsPoint>() + (*H * Scalar::from(fee)),
     }
   }
 

networks/monero/rpc/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/rpc"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/rpc/simple-request/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/rpc/simple-request"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/rpc/simple-request/tests/tests.rs

@@ -1,4 +1,4 @@
-use std::sync::OnceLock;
+use std::sync::LazyLock;
 use tokio::sync::Mutex;
 
 use monero_address::{Network, MoneroAddress};
@@ -8,7 +8,7 @@ use monero_address::{Network, MoneroAddress};
 // Accordingly, we test monero-rpc here (implicitly testing the simple-request transport)
 use monero_simple_request_rpc::*;
 
-static SEQUENTIAL: OnceLock<Mutex<()>> = OnceLock::new();
+static SEQUENTIAL: LazyLock<Mutex<()>> = LazyLock::new(|| Mutex::new(()));
 
 const ADDRESS: &str =
   "4B33mFPMq6mKi7Eiyd5XuyKRVMGVZz1Rqb9ZTyGApXW5d1aT7UBDZ89ewmnWFkzJ5wPd2SFbn313vCT8a4E2Qf4KQH4pNey";
@@ -17,7 +17,7 @@ const ADDRESS: &str =
 async fn test_rpc() {
   use monero_rpc::Rpc;
 
-  let guard = SEQUENTIAL.get_or_init(|| Mutex::new(())).lock().await;
+  let guard = SEQUENTIAL.lock().await;
 
   let rpc =
     SimpleRequestRpc::new("http://serai:seraidex@127.0.0.1:18081".to_string()).await.unwrap();
@@ -68,7 +68,7 @@ async fn test_rpc() {
 async fn test_decoy_rpc() {
   use monero_rpc::{Rpc, DecoyRpc};
 
-  let guard = SEQUENTIAL.get_or_init(|| Mutex::new(())).lock().await;
+  let guard = SEQUENTIAL.lock().await;
 
   let rpc =
     SimpleRequestRpc::new("http://serai:seraidex@127.0.0.1:18081".to_string()).await.unwrap();
@@ -122,7 +122,7 @@ async fn test_decoy_rpc() {
 async fn test_zero_out_tx_o_indexes() {
   use monero_rpc::Rpc;
 
-  let guard = SEQUENTIAL.get_or_init(|| Mutex::new(())).lock().await;
+  let guard = SEQUENTIAL.lock().await;
 
   let rpc = SimpleRequestRpc::new("https://node.sethforprivacy.com".to_string()).await.unwrap();
 

networks/monero/verify-chain/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/verify-chain"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 publish = false
 
 [package.metadata.docs.rs]

networks/monero/wallet/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/wallet"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/wallet/address/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/wallet/address"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/wallet/polyseed/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/wallet/polyseed"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/wallet/polyseed/src/lib.rs

@@ -4,7 +4,7 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use core::fmt;
-use std_shims::{sync::OnceLock, string::String, collections::HashMap};
+use std_shims::{sync::LazyLock, string::String, collections::HashMap};
 #[cfg(feature = "std")]
 use std::time::{SystemTime, UNIX_EPOCH};
 
@@ -163,10 +163,7 @@ impl WordList {
   }
 }
 
-static LANGUAGES_CELL: OnceLock<HashMap<Language, WordList>> = OnceLock::new();
-#[allow(non_snake_case)]
-fn LANGUAGES() -> &'static HashMap<Language, WordList> {
-  LANGUAGES_CELL.get_or_init(|| {
+static LANGUAGES: LazyLock<HashMap<Language, WordList>> = LazyLock::new(|| {
   HashMap::from([
     (Language::Czech, WordList::new(include!("./words/cs.rs"), true, false)),
     (Language::French, WordList::new(include!("./words/fr.rs"), true, true)),
@@ -185,8 +182,7 @@ fn LANGUAGES() -> &'static HashMap<Language, WordList> {
       WordList::new(include!("./words/zh_traditional.rs"), false, false),
     ),
   ])
-  })
-}
+});
 
 /// A Polyseed.
 #[derive(Clone, PartialEq, Eq, Zeroize, ZeroizeOnDrop)]
@@ -317,7 +313,7 @@ impl Polyseed {
     let mut poly = [0; POLYSEED_LENGTH];
 
     // Validate words are in the lang word list
-    let lang_word_list: &WordList = &LANGUAGES()[&lang];
+    let lang_word_list: &WordList = &LANGUAGES[&lang];
     for (i, word) in seed.split_whitespace().enumerate() {
       // Find the word's index
       fn check_if_matches<S: AsRef<str>, I: Iterator<Item = S>>(
@@ -464,7 +460,7 @@ impl Polyseed {
 
     // Output words
     let mut seed = Zeroizing::new(String::new());
-    let words = &LANGUAGES()[&self.language].words;
+    let words = &LANGUAGES[&self.language].words;
     for i in 0 .. poly.len() {
       seed.push_str(words[usize::from(poly[i])]);
       if i < poly.len() - 1 {

networks/monero/wallet/seed/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/wallet/seed"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

networks/monero/wallet/seed/src/lib.rs

@@ -5,7 +5,7 @@
 
 use core::{ops::Deref, fmt};
 use std_shims::{
-  sync::OnceLock,
+  sync::LazyLock,
   vec,
   vec::Vec,
   string::{String, ToString},
@@ -102,10 +102,7 @@ impl WordList {
   }
 }
 
-static LANGUAGES_CELL: OnceLock<HashMap<Language, WordList>> = OnceLock::new();
-#[allow(non_snake_case)]
-fn LANGUAGES() -> &'static HashMap<Language, WordList> {
-  LANGUAGES_CELL.get_or_init(|| {
+static LANGUAGES: LazyLock<HashMap<Language, WordList>> = LazyLock::new(|| {
   HashMap::from([
     (Language::Chinese, WordList::new(include!("./words/zh.rs"), 1)),
     (Language::English, WordList::new(include!("./words/en.rs"), 3)),
@@ -121,8 +118,7 @@ fn LANGUAGES() -> &'static HashMap<Language, WordList> {
     (Language::Lojban, WordList::new(include!("./words/jbo.rs"), 4)),
     (Language::DeprecatedEnglish, WordList::new(include!("./words/ang.rs"), 4)),
   ])
-  })
-}
+});
 
 fn checksum_index(words: &[Zeroizing<String>], lang: &WordList) -> usize {
   let mut trimmed_words = Zeroizing::new(String::new());
@@ -170,7 +166,7 @@ fn key_to_seed(lang: Language, key: Zeroizing<Scalar>) -> Seed {
   let bytes = Zeroizing::new(key.to_bytes());
 
   // get the language words
-  let words = &LANGUAGES()[&lang].word_list;
+  let words = &LANGUAGES[&lang].word_list;
   let list_len = u64::try_from(words.len()).unwrap();
 
   // To store the found words & add the checksum word later.
@@ -204,7 +200,7 @@ fn key_to_seed(lang: Language, key: Zeroizing<Scalar>) -> Seed {
 
   // create a checksum word for all languages except old english
   if lang != Language::DeprecatedEnglish {
-    let checksum = seed[checksum_index(&seed, &LANGUAGES()[&lang])].clone();
+    let checksum = seed[checksum_index(&seed, &LANGUAGES[&lang])].clone();
     seed.push(checksum);
   }
 
@@ -232,7 +228,7 @@ fn seed_to_bytes(lang: Language, words: &str) -> Result<Zeroizing<[u8; 32]>, See
   }
 
   // Validate words are in the language word list
-  let lang_word_list: &WordList = &LANGUAGES()[&lang];
+  let lang_word_list: &WordList = &LANGUAGES[&lang];
   let matched_indices = (|| {
     let has_checksum = words.len() == SEED_LENGTH_WITH_CHECKSUM;
     let mut matched_indices = Zeroizing::new(vec![]);

networks/monero/wallet/seed/src/tests.rs

@@ -183,7 +183,7 @@ fn test_original_seed() {
   for vector in vectors {
     fn trim_by_lang(word: &str, lang: Language) -> String {
       if lang != Language::DeprecatedEnglish {
-        word.chars().take(LANGUAGES()[&lang].unique_prefix_length).collect()
+        word.chars().take(LANGUAGES[&lang].unique_prefix_length).collect()
       } else {
         word.to_string()
       }

networks/monero/wallet/tests/runner/mod.rs

@@ -1,5 +1,5 @@
 use core::ops::Deref;
-use std_shims::sync::OnceLock;
+use std_shims::sync::LazyLock;
 
 use zeroize::Zeroizing;
 use rand_core::OsRng;
@@ -145,7 +145,7 @@ pub async fn rpc() -> SimpleRequestRpc {
   rpc
 }
 
-pub static SEQUENTIAL: OnceLock<Mutex<()>> = OnceLock::new();
+pub(crate) static SEQUENTIAL: LazyLock<Mutex<()>> = LazyLock::new(|| Mutex::new(()));
 
 #[macro_export]
 macro_rules! async_sequential {
@@ -153,7 +153,7 @@ macro_rules! async_sequential {
     $(
       #[tokio::test]
       async fn $name() {
-        let guard = runner::SEQUENTIAL.get_or_init(|| tokio::sync::Mutex::new(())).lock().await;
+        let guard = runner::SEQUENTIAL.lock().await;
         let local = tokio::task::LocalSet::new();
         local.run_until(async move {
           if let Err(err) = tokio::task::spawn_local(async move { $body }).await {

networks/monero/wallet/util/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 repository = "https://github.com/serai-dex/serai/tree/develop/networks/monero/wallet/util"
 authors = ["Luke Parker <lukeparker5132@gmail.com>"]
 edition = "2021"
-rust-version = "1.79"
+rust-version = "1.80"
 
 [package.metadata.docs.rs]
 all-features = true

orchestration/runtime/Dockerfile

@@ -1,5 +1,5 @@
-# rust:1.79.0-slim-bookworm as of June 14th, 2024 (GMT)
-FROM --platform=linux/amd64 rust@sha256:fa189cd885739dd17fc6bb4e132687fce43f2bf42983c0ac39b60e4943201e9c as deterministic
+# rust:1.80.0-slim-bookworm as of July 27th, 2024 (GMT)
+FROM --platform=linux/amd64 rust@sha256:37e6f90f98b3afd15c2526d7abb257a1f4cb7d49808fe3729d9d62020b07b544 as deterministic
 
 # Move to a Debian package snapshot
 RUN rm -rf /etc/apt/sources.list.d/debian.sources && \

orchestration/src/main.rs

@@ -146,7 +146,7 @@ fn build_serai_service(prelude: &str, release: bool, features: &str, package: &s
 
   format!(
     r#"
-FROM rust:1.79-slim-bookworm as builder
+FROM rust:1.80-slim-bookworm as builder
 
 COPY --from=mimalloc-debian libmimalloc.so /usr/lib
 RUN echo "/usr/lib/libmimalloc.so" >> /etc/ld.so.preload

rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.79"
+channel = "1.80"
 targets = ["wasm32-unknown-unknown"]
 profile = "minimal"
 components = ["rust-src", "rustfmt", "clippy"]