Bump MSRV to 1.74.0

tcharding · tcharding · commit 3d1a75113a57 · 2026-01-16T13:45:33.000+11:00
In line with `rust-bitcoin` bump to Rust 1.74.0

Note that other major projects in the Rust Bitcoin eccosystem have or
will, bump to 1.85.0 (in Debian Stable).

The reason I've done this PR is because I'd like to re-write CI in
line with `rust-bitcoin` and bumping the MSRV is easier than debugging
the MSRV job.
diff --git a/Cargo.toml b/Cargo.toml
@@ -9,7 +9,8 @@ readme = "README.md"
 keywords = ["base32", "encoding", "bech32", "bitcoin", "cryptocurrency"]
 categories = ["encoding", "cryptography::cryptocurrencies"]
 license = "MIT"
-edition = "2018"
+edition = "2021"
+rust-version = "1.74.0"
 
 [features]
 default = ["std"]
diff --git a/clippy.toml b/clippy.toml
diff --git a/src/primitives/iter.rs b/src/primitives/iter.rs
@@ -155,7 +155,7 @@ where
 /// The number of fes encoded by n bytes, rounded up because we pad the fes.
 fn bytes_len_to_fes_len(bytes: usize) -> usize {
     let bits = bytes * 8;
-    (bits + 4) / 5
+    bits.div_ceil(5)
 }
 
 impl<I> ExactSizeIterator for BytesToFes<I>

Original file line number	Diff line number	Diff line change
`@@ -155,7 +155,7 @@ where`
`155`	`155`	`/// The number of fes encoded by n bytes, rounded up because we pad the fes.`
`156`	`156`	`fn bytes_len_to_fes_len(bytes: usize) -> usize {`
`157`	`157`	`let bits = bytes * 8;`
`158`		`- (bits + 4) / 5`
	`158`	`+ bits.div_ceil(5)`
`159`	`159`	`}`
`160`	`160`
`161`	`161`	`impl<I> ExactSizeIterator for BytesToFes<I>`