Update no-std-io2 to 0.9.0 (#529)

* Update no-std-io2 to 0.9.0

See https://github.com/wcampbell0x2a/no-std-io2/blob/main/CHANGELOG.md#v090---2025-01-04

* Update MSRV to 1.81

* fix: no std cleanup

---------

Co-authored-by: Emmanuel Thompson <[email protected]>

Author: wcampbell0x2a

.github/workflows/main.yml

@@ -32,7 +32,7 @@ jobs:
       matrix:
         toolchain:
             # msrv
-          - 1.71
+          - 1.81
 
     steps:
       - uses: actions/checkout@v4

Cargo.toml

@@ -9,7 +9,7 @@ keywords = ["deku", "bits", "serialization", "deserialization", "struct"]
 categories = ["encoding", "parsing", "no-std"]
 description = "bit level serialization/deserialization proc-macro for structs"
 readme = "README.md"
-rust-version = "1.71"
+rust-version = "1.81"
 
 [lib]
 bench = false
@@ -32,7 +32,7 @@ bits = ["dep:bitvec", "deku_derive/bits"]
 deku_derive = { version = "^0.18.1", path = "deku-derive", default-features = false}
 bitvec = { version = "1.0.1", default-features = false, optional = true }
 log = { version = "0.4.22", optional = true }
-no_std_io = { version = "0.8.0", default-features = false, features = ["alloc"], package = "no_std_io2" }
+no_std_io = { version = "0.9.0", default-features = false, features = ["alloc"], package = "no_std_io2" }
 rustversion = "1.0.17"
 
 [dev-dependencies]

README.md

@@ -17,7 +17,7 @@ Avoid the requirement of writing redundant, error-prone parsing and writing code
 for binary structs or network headers
 
 ## Usage
-*Compiler support: requires rustc 1.71+*
+*Compiler support: requires rustc 1.81+*
 
 ```toml
 [dependencies]

deku-derive/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 repository = "https://github.com/sharksforarms/deku"
 description = "bit level serialization/deserialization proc-macro for structs"
 readme = "../README.md"
-rust-version = "1.71"
+rust-version = "1.81"
 
 [lib]
 proc-macro = true

ensure_no_std/src/bin/main.rs

@@ -34,7 +34,7 @@ fn main() -> ! {
     {
         use core::mem::MaybeUninit;
         const HEAP_SIZE: usize = 1024;
-        static mut HEAP_MEM: [MaybeUninit<u8>; HEAP_SIZE] = [MaybeUninit::uninit(); HEAP_SIZE];
+        static HEAP_MEM: [MaybeUninit<u8>; HEAP_SIZE] = [MaybeUninit::uninit(); HEAP_SIZE];
         unsafe { HEAP.init(HEAP_MEM.as_ptr() as usize, HEAP_SIZE) }
     }
 

src/noseek.rs

@@ -1,9 +1,10 @@
 //! Wrapper type that provides a fake [`Seek`] implementation.
 
 #[cfg(not(feature = "std"))]
-use alloc::{string::String, vec::Vec};
+use alloc::vec::Vec;
 
 use crate::no_std_io::{Read, Result, Seek, SeekFrom, Write};
+#[cfg(feature = "std")]
 use no_std_io::io::ErrorKind;
 
 /// A wrapper that provides a limited implementation of

src/reader.rs

@@ -7,7 +7,7 @@ use bitvec::prelude::*;
 use no_std_io::io::{ErrorKind, Read, Seek, SeekFrom};
 
 use crate::{ctx::Order, prelude::NeedSize, DekuError};
-use alloc::vec::Vec;
+use alloc::{vec, vec::Vec};
 
 #[cfg(feature = "logging")]
 use log;