chore!: Upgrade to rust 2024 edition and bump MSRV to 1.85 (#57)

## Description

- Upgrades the rust edition from 2021 to 2024 in iroh-metrics and
iroh-metrics-derive
- Bumps the MSRV from 1.81 to 1.85 in all crates and CI.

## Breaking Changes

- Rust edition bumped to 2024
- Minimum supported rust version bumped to 1.85

## Change checklist
- [x] Self-review.
- [x] All breaking changes documented.

Author: matheus23

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ env:
   RUST_BACKTRACE: 1
   RUSTFLAGS: -Dwarnings
   RUSTDOCFLAGS: -Dwarnings
-  MSRV: "1.81"
+  MSRV: "1.85"
   SCCACHE_CACHE_SIZE: "10G"
   IROH_FORCE_STAGING_RELAYS: "1"
 

Cargo.toml

@@ -4,15 +4,15 @@ members = ["iroh-metrics-derive"]
 [package]
 name = "iroh-metrics"
 version = "0.36.2"
-edition = "2021"
+edition = "2024"
 readme = "README.md"
 description = "metrics for iroh"
 license = "MIT OR Apache-2.0"
 authors = ["arqu <[email protected]>", "n0 team"]
 repository = "https://github.com/n0-computer/iroh-metrics"
 
 # Sadly this also needs to be updated in .github/workflows/ci.yml
-rust-version = "1.81"
+rust-version = "1.85"
 
 [lints.rust]
 missing_debug_implementations = "warn"

iroh-metrics-derive/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
 name = "iroh-metrics-derive"
 version = "0.3.1"
-edition = "2021"
+edition = "2024"
 description = "derive macros for iroh-metrics"
 license = "MIT OR Apache-2.0"
 authors = ["Frando <[email protected]>", "n0 team"]
 repository = "https://github.com/n0-computer/iroh-metrics"
 
 # Sadly this also needs to be updated in .github/workflows/ci.yml
-rust-version = "1.81"
+rust-version = "1.85"
 
 [lib]
 proc-macro = true

iroh-metrics-derive/src/lib.rs

@@ -2,8 +2,8 @@ use heck::ToSnakeCase;
 use proc_macro::TokenStream;
 use quote::quote;
 use syn::{
-    meta::ParseNestedMeta, parse_macro_input, spanned::Spanned, Attribute, Data, DeriveInput,
-    Error, Expr, ExprLit, Fields, Ident, Lit, LitStr,
+    Attribute, Data, DeriveInput, Error, Expr, ExprLit, Fields, Ident, Lit, LitStr,
+    meta::ParseNestedMeta, parse_macro_input, spanned::Spanned,
 };
 
 #[proc_macro_derive(MetricsGroup, attributes(metrics, default))]

src/base.rs

@@ -1,9 +1,9 @@
 use std::{any::Any, sync::Arc};
 
 use crate::{
+    Metric, MetricType, MetricValue,
     encoding::EncodableMetric,
     iterable::{FieldIter, IntoIterable, Iterable},
-    Metric, MetricType, MetricValue,
 };
 
 /// Trait for structs containing metric items.
@@ -120,9 +120,9 @@ mod tests {
 
     use super::*;
     use crate::{
+        Counter, Gauge, Histogram, MetricType, MetricsGroupSet, MetricsSource, Registry,
         encoding::{Decoder, Encoder},
         iterable::Iterable,
-        Counter, Gauge, Histogram, MetricType, MetricsGroupSet, MetricsSource, Registry,
     };
 
     #[derive(Debug, Iterable, Serialize, Deserialize)]

src/registry.rs

@@ -5,12 +5,12 @@ use std::{
     fmt::{self, Write},
     ops::Deref,
     sync::{
-        atomic::{AtomicU64, Ordering},
         Arc, RwLock,
+        atomic::{AtomicU64, Ordering},
     },
 };
 
-use crate::{encoding::write_eof, Error, MetricsGroup, MetricsGroupSet};
+use crate::{Error, MetricsGroup, MetricsGroupSet, encoding::write_eof};
 
 /// A registry for [`MetricsGroup`].
 #[derive(Debug, Default)]

src/service.rs

@@ -5,11 +5,11 @@ use std::{
     time::{Duration, Instant},
 };
 
-use hyper::{service::service_fn, Request, Response};
+use hyper::{Request, Response, service::service_fn};
 use tokio::{io::AsyncWriteExt as _, net::TcpListener};
 use tracing::{debug, error, info, warn};
 
-use crate::{parse_prometheus_metrics, Error, MetricsSource};
+use crate::{Error, MetricsSource, parse_prometheus_metrics};
 
 type BytesBody = http_body_util::Full<hyper::body::Bytes>;
 

src/static_core.rs

@@ -12,7 +12,7 @@
 //! ```rust
 //! use std::sync::Arc;
 //!
-//! use iroh_metrics::{inc, inc_by, static_core::Core, Counter, MetricsGroup};
+//! use iroh_metrics::{Counter, MetricsGroup, inc, inc_by, static_core::Core};
 //!
 //! #[derive(Debug, Default, MetricsGroup)]
 //! #[metrics(name = "my_metrics")]