Replace rand with fastrand, remove tracing

Cargo.toml

@@ -7,12 +7,11 @@ edition = "2021"
 
 [dependencies]
 bytes = "1"
+fastrand = "2.0.0"
 futures-core = "0.3"
 mime = "0.3"
-rand = { version = "0.8", features = ["small_rng"] }
 tokio = { version = "1", default-features = false, features = [ "io-util" ] }
 tokio-util = { version = "0.7", default-features = false, features = ["io"] }
-tracing = "0.1.37"
 
 [dev-dependencies]
 common-multipart-rfc7578 = "0.6.0"

src/internal.rs

@@ -192,7 +192,6 @@ where
         }
 
         if self.closed {
-            tracing::debug!("Polled for close");
             return Poll::Ready(Ok(()));
         }
 

src/lib.rs

@@ -3,10 +3,10 @@ mod internal;
 use std::{collections::VecDeque, io::Cursor, pin::Pin};
 
 use bytes::Bytes;
+use fastrand::Rng;
 use futures_core::Stream;
 use internal::{SendRead, UnsendRead};
 use mime::Mime;
-use rand::{distributions::Alphanumeric, rngs::SmallRng, Rng, SeedableRng};
 use tokio::io::AsyncRead;
 use tokio_util::io::ReaderStream;
 
@@ -32,11 +32,8 @@ pub struct Empty;
 
 impl<'a> Body<SendRead<'a>> {
     pub fn builder() -> BodyBuilder<SendRead<'a>> {
-        let boundary = SmallRng::from_entropy()
-            .sample_iter(&Alphanumeric)
-            .map(char::from)
-            .take(6)
-            .collect::<String>();
+        let mut rng = Rng::new();
+        let boundary = (0..6).map(|_| rng.alphanumeric()).collect::<String>();
 
         BodyBuilder {
             boundary,