build(rust): Bump fs4 from 0.8.4 to 0.9.1 (#17978)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Stijn de Gooijer <stijndegooijer@gmail.com>

crates/polars-io/Cargo.toml

@@ -50,7 +50,7 @@ url = { workspace = true, optional = true }
 zstd = { workspace = true, optional = true }
 
 [target.'cfg(not(target_family = "wasm"))'.dependencies]
-fs4 = { version = "0.8.3", features = ["sync"], optional = true }
+fs4 = { version = "0.9", features = ["sync"], optional = true }
 home = "0.5.4"
 
 [dev-dependencies]

crates/polars-io/src/file_cache/cache_lock.rs

@@ -2,7 +2,7 @@ use std::sync::atomic::AtomicBool;
 use std::sync::{Arc, RwLock, RwLockReadGuard, RwLockWriteGuard};
 use std::time::Duration;
 
-use fs4::FileExt;
+use fs4::fs_std::FileExt;
 use once_cell::sync::Lazy;
 
 use super::utils::FILE_CACHE_PREFIX;

crates/polars-io/src/file_cache/entry.rs

@@ -3,7 +3,7 @@ use std::path::{Path, PathBuf};
 use std::sync::atomic::AtomicU64;
 use std::sync::{Arc, Mutex};
 
-use fs4::FileExt;
+use fs4::fs_std::FileExt;
 use polars_core::config;
 use polars_error::{polars_bail, to_compute_err, PolarsError, PolarsResult};
 use polars_utils::flatten;

crates/polars-io/src/file_cache/eviction.rs

@@ -3,7 +3,7 @@ use std::sync::atomic::AtomicU64;
 use std::sync::Arc;
 use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
 
-use fs4::FileExt;
+use fs4::fs_std::FileExt;
 use polars_error::{PolarsError, PolarsResult};
 
 use super::cache_lock::{GlobalFileCacheGuardExclusive, GLOBAL_FILE_CACHE_LOCK};

crates/polars-io/src/file_cache/file_lock.rs

@@ -1,7 +1,7 @@
 use std::fs::{File, OpenOptions};
 use std::path::Path;
 
-use fs4::FileExt;
+use fs4::fs_std::FileExt;
 
 /// Note: this creates the file if it does not exist when acquiring locks.
 pub(super) struct FileLock<T: AsRef<Path>>(T);