refactor: replace doc_auto_cfg with doc_cfg (#52)

`doc_auto_cfg` has been merged into `doc_cfg` in
rust-lang/rust#138907.

Also bumps the Rust nightly version to actually capture the `doc_cfg`
change.

Fixes: [DEV-1000](https://linear.app/veecle/issue/DEV-1000)

---------

Signed-off-by: Julian Schindel <[email protected]>

Author: arctic-alpaca

rust-toolchain-nightly.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "nightly-2025-08-14"
+channel = "nightly-2025-10-01"
 components = [
   "clippy",
   "llvm-tools-preview",

veecle-os-data-support-someip/src/string.rs

@@ -313,7 +313,7 @@ impl<'a> Parse<'a> for EncodedString<'a> {
             let mut slice = reader.remaining_slice();
 
             // Odd-length UTF-16 strings: ignore last byte.
-            if slice.len() % 2 != 0 {
+            if !slice.len().is_multiple_of(2) {
                 slice = &slice[..slice.len() - 1];
             }
 
@@ -336,7 +336,7 @@ impl<'a> Parse<'a> for EncodedString<'a> {
             let mut slice = reader.remaining_slice();
 
             // Odd-length UTF-16 strings: ignore last byte.
-            if slice.len() % 2 != 0 {
+            if !slice.len().is_multiple_of(2) {
                 slice = &slice[..slice.len() - 1];
             }
 

veecle-os-runtime/src/datastore/reader.rs

@@ -1,7 +1,7 @@
 use core::cell::Ref;
 use core::fmt::Debug;
 use core::marker::PhantomData;
-use core::pin::{Pin, pin};
+use core::pin::Pin;
 
 use pin_project::pin_project;
 

veecle-os/src/lib.rs

@@ -2,7 +2,7 @@
 
 #![forbid(unsafe_code)]
 #![no_std]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 #[doc(inline)]
 pub use veecle_os_runtime as runtime;

veecle-telemetry-server/src/main.rs

@@ -100,7 +100,7 @@ async fn handle_stdin(store: Arc<TracingLineStore>) -> anyhow::Result<()> {
     while let Some(line) = reader.next_line().await.context("reading from stdin")? {
         let total_lines = store.push_line(line);
 
-        if total_lines % 10 == 0 || last_log.elapsed() >= Duration::from_millis(100) {
+        if total_lines.is_multiple_of(10) || last_log.elapsed() >= Duration::from_millis(100) {
             print!("\rProcessed {total_lines} lines.\r");
             last_log = Instant::now();
         }