Fix compile error/warning with --no-default-features

Author: w1th0utnam3

splashsurf_lib/Cargo.toml

@@ -51,7 +51,7 @@ fxhash = "0.2"
 bitflags = "2.4"
 smallvec = { version = "1.11", features = ["union"] }
 arrayvec = "0.7"
-bytemuck = "1.9"
+bytemuck = { version = "1.9", features = ["extern_crate_alloc"] }
 bytemuck_derive = "1.3"
 numeric_literals = "0.2"
 rstar = "0.11"

splashsurf_lib/src/utils.rs

@@ -7,6 +7,7 @@ use std::cell::UnsafeCell;
 /// "Convert" an empty vector to preserve allocated memory if size and alignment matches
 /// See https://users.rust-lang.org/t/pattern-how-to-reuse-a-vec-str-across-loop-iterations/61657/5
 /// See https://github.com/rust-lang/rfcs/pull/2802
+#[allow(unused)]
 pub(crate) fn recycle<A, B>(mut v: Vec<A>) -> Vec<B> {
     v.clear();
     v.into_iter().map(|_| unreachable!()).collect()