fix lints

Cargo.toml

@@ -525,9 +525,6 @@ single_use_lifetimes = "warn"
 unsafe_op_in_unsafe_fn = "warn"
 unreachable_pub = "warn"
 
-# not in rust 1.75.0 (doesn't break CI but won't check for it)
-unit_bindings = "warn"
-
 # this seems to suggest broken code and is not working correctly
 unused_braces = "allow"
 
@@ -577,7 +574,6 @@ filetype_is_file = "warn"
 float_cmp_const = "warn"
 format_push_string = "warn"
 impl_trait_in_params = "warn"
-ref_to_mut = "warn"
 lossy_float_literal = "warn"
 mem_forget = "warn"
 missing_assert_message = "warn"

src/main.rs

@@ -7,7 +7,7 @@ use std::os::unix::fs::PermissionsExt as _; /* not unix specific, just only for
 // are not stable as of writing This is the case for every other occurence of
 // sync Mutex/RwLock, except for database related ones
 use std::sync::{Arc, RwLock};
-use std::{any::Any, fs, io, net::SocketAddr, sync::atomic, time::Duration};
+use std::{any::Any, io, net::SocketAddr, sync::atomic, time::Duration};
 
 use api::ruma_wrapper::{Ruma, RumaResponse};
 use axum::{
@@ -576,7 +576,7 @@ impl LogLevelReloadHandles {
 }
 
 #[cfg(feature = "perf_measurements")]
-type TracingFlameGuard = Option<tracing_flame::FlushGuard<io::BufWriter<fs::File>>>;
+type TracingFlameGuard = Option<tracing_flame::FlushGuard<io::BufWriter<std::fs::File>>>;
 #[cfg(not(feature = "perf_measurements"))]
 type TracingFlameGuard = ();
 
@@ -659,6 +659,7 @@ fn init_tracing(config: &Config) -> (LogLevelReloadHandles, TracingFlameGuard) {
 	};
 
 	#[cfg(not(feature = "perf_measurements"))]
+	#[cfg_attr(not(feature = "perf_measurements"), allow(clippy::let_unit_value))]
 	let flame_guard = ();
 
 	tracing::subscriber::set_global_default(subscriber).unwrap();