diff --git a/Cargo.lock b/Cargo.lock
index 60c88b0..b7dec58 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1000,7 +1000,7 @@ dependencies = [
 
 [[package]]
 name = "librqbit"
-version = "3.3.0"
+version = "4.0.0-beta.0"
 dependencies = [
  "anyhow",
  "axum",
@@ -1066,7 +1066,7 @@ version = "2.2.1"
 
 [[package]]
 name = "librqbit-core"
-version = "3.0.0"
+version = "3.1.0"
 dependencies = [
  "anyhow",
  "hex 0.4.3",
@@ -1076,13 +1076,15 @@ dependencies = [
  "librqbit-clone-to-owned",
  "parking_lot",
  "serde",
+ "tokio",
+ "tracing",
  "url",
  "uuid",
 ]
 
 [[package]]
 name = "librqbit-dht"
-version = "3.1.0"
+version = "3.2.0"
 dependencies = [
  "anyhow",
  "directories",
@@ -1105,7 +1107,7 @@ dependencies = [
 
 [[package]]
 name = "librqbit-peer-protocol"
-version = "3.0.0"
+version = "3.1.0"
 dependencies = [
  "anyhow",
  "bincode",
@@ -1704,7 +1706,7 @@ dependencies = [
 
 [[package]]
 name = "rqbit"
-version = "3.3.0"
+version = "4.0.0-beta.0"
 dependencies = [
  "anyhow",
  "clap",
diff --git a/crates/dht/Cargo.toml b/crates/dht/Cargo.toml
index fa69e28..ec5c9d5 100644
--- a/crates/dht/Cargo.toml
+++ b/crates/dht/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "librqbit-dht"
-version = "3.1.0"
+version = "3.2.0"
 edition = "2021"
 description = "DHT implementation, used in rqbit torrent client."
 license = "Apache-2.0"
@@ -33,7 +33,7 @@ indexmap = "2"
 directories = "5"
 
 clone_to_owned = {path="../clone_to_owned", package="librqbit-clone-to-owned", version = "2.2.1"}
-librqbit-core = {path="../librqbit_core", version = "3.0.0"}
+librqbit-core = {path="../librqbit_core", version = "3.1.0"}
 
 [dev-dependencies]
 tracing-subscriber = "0.3"
\ No newline at end of file
diff --git a/crates/dht/src/dht.rs b/crates/dht/src/dht.rs
index bcbc576..f2331e2 100644
--- a/crates/dht/src/dht.rs
+++ b/crates/dht/src/dht.rs
@@ -18,7 +18,7 @@ use bencode::ByteString;
 use futures::{stream::FuturesUnordered, Stream, StreamExt};
 use indexmap::IndexSet;
 use leaky_bucket::RateLimiter;
-use librqbit_core::{id20::Id20, peer_id::generate_peer_id};
+use librqbit_core::{id20::Id20, peer_id::generate_peer_id, spawn_utils::spawn};
 use parking_lot::RwLock;
 use rand::Rng;
 use serde::Serialize;
@@ -27,7 +27,7 @@ use tokio::{
     sync::mpsc::{channel, unbounded_channel, Sender, UnboundedReceiver, UnboundedSender},
 };
 use tokio_stream::wrappers::{errors::BroadcastStreamRecvError, BroadcastStream};
-use tracing::{debug, info, trace, warn};
+use tracing::{debug, debug_span, error_span, info, trace, warn, Instrument};
 
 #[derive(Debug, Serialize)]
 pub struct DhtStats {
@@ -513,7 +513,7 @@ impl DhtWorker {
         bootstrap_addrs: &[String],
     ) -> anyhow::Result<()> {
         let (out_tx, mut out_rx) = channel(1);
-        let framer = run_framer(&self.socket, in_rx, out_tx);
+        let framer = run_framer(&self.socket, in_rx, out_tx).instrument(debug_span!("dht_framer"));
 
         let bootstrap = async {
             let mut futs = FuturesUnordered::new();
@@ -521,34 +521,40 @@ impl DhtWorker {
             for addr in bootstrap_addrs.iter() {
                 let this = &self;
                 let in_tx = &in_tx;
-                futs.push(async move {
-                    match tokio::net::lookup_host(addr).await {
-                        Ok(addrs) => {
-                            for addr in addrs {
-                                let request = this
-                                    .state
-                                    .write()
-                                    .create_request(Request::FindNode(this.peer_id), addr);
-                                in_tx.send((request, addr))?;
+                futs.push(
+                    async move {
+                        match tokio::net::lookup_host(addr).await {
+                            Ok(addrs) => {
+                                for addr in addrs {
+                                    let request = this
+                                        .state
+                                        .write()
+                                        .create_request(Request::FindNode(this.peer_id), addr);
+                                    in_tx.send((request, addr))?;
+                                }
+                            }
+                            Err(e) => {
+                                warn!("error looking up {}: {}", addr, e);
+                                return Err(e.into());
                             }
                         }
-                        Err(e) => warn!("error looking up {}: {}", addr, e),
+                        Ok::<_, anyhow::Error>(())
                     }
-                    Ok::<_, anyhow::Error>(())
-                });
+                    .instrument(error_span!("dht_bootstrap", addr = addr)),
+                );
             }
             let mut successes = 0;
             while let Some(resp) = futs.next().await {
-                match resp {
-                    Ok(_) => successes += 1,
-                    Err(e) => warn!("error in one of the bootstrappers: {}", e),
+                if resp.is_ok() {
+                    successes += 1
                 }
             }
             if successes == 0 {
                 anyhow::bail!("bootstrapping did not succeed")
             }
             Ok(())
-        };
+        }
+        .instrument(debug_span!("dht_bootstrapper"));
         let mut bootstrap_done = false;
 
         let response_reader = {
@@ -563,7 +569,8 @@ impl DhtWorker {
                     "closed response reader, nowhere to send results to, DHT closed"
                 ))
             }
-        };
+        }
+        .instrument(debug_span!("dht_responese_reader"));
 
         tokio::pin!(framer);
         tokio::pin!(bootstrap);
@@ -676,7 +683,7 @@ impl Dht {
             listen_addr,
         )));
 
-        tokio::spawn({
+        spawn(error_span!("dht"), {
             let state = state.clone();
             async move {
                 let worker = DhtWorker {
@@ -684,8 +691,8 @@ impl Dht {
                     peer_id,
                     state,
                 };
-                let result = worker.start(in_tx, in_rx, &bootstrap_addrs).await;
-                warn!("DHT worker finished with {:?}", result);
+                worker.start(in_tx, in_rx, &bootstrap_addrs).await?;
+                Ok(())
             }
         });
         Ok(Dht { state })
diff --git a/crates/dht/src/persistence.rs b/crates/dht/src/persistence.rs
index d22ad6b..a4f091e 100644
--- a/crates/dht/src/persistence.rs
+++ b/crates/dht/src/persistence.rs
@@ -1,5 +1,6 @@
 // TODO: this now stores only the routing table, but we also need AT LEAST the same socket address...
 
+use librqbit_core::spawn_utils::spawn;
 use serde::{Deserialize, Serialize};
 use std::fs::OpenOptions;
 use std::io::{BufReader, BufWriter};
@@ -8,8 +9,7 @@ use std::path::{Path, PathBuf};
 use std::time::Duration;
 
 use anyhow::Context;
-use tokio::spawn;
-use tracing::{debug, error, info, trace, warn};
+use tracing::{debug, error, error_span, info, trace, warn};
 
 use crate::dht::{Dht, DhtConfig};
 use crate::routing_table::RoutingTable;
@@ -110,7 +110,7 @@ impl PersistentDht {
         };
         let dht = Dht::with_config(dht_config).await?;
 
-        spawn({
+        spawn(error_span!("dht_persistence"), {
             let dht = dht.clone();
             let dump_interval = config
                 .dump_interval
diff --git a/crates/librqbit/Cargo.toml b/crates/librqbit/Cargo.toml
index 01beab9..1104017 100644
--- a/crates/librqbit/Cargo.toml
+++ b/crates/librqbit/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "librqbit"
-version = "3.3.0"
+version = "4.0.0-beta.0"
 authors = ["Igor Katson <igor.katson@gmail.com>"]
 edition = "2021"
 description = "The main library used by rqbit torrent client. The binary is just a small wrapper on top of it."
@@ -24,11 +24,11 @@ rust-tls = ["reqwest/rustls-tls"]
 [dependencies]
 bencode = {path = "../bencode", default-features=false, package="librqbit-bencode", version="2.2.1"}
 buffers = {path = "../buffers", package="librqbit-buffers", version = "2.2.1"}
-librqbit-core = {path = "../librqbit_core", version = "3.0.0"}
+librqbit-core = {path = "../librqbit_core", version = "3.1.0"}
 clone_to_owned = {path = "../clone_to_owned", package="librqbit-clone-to-owned", version = "2.2.1"}
-peer_binary_protocol = {path = "../peer_binary_protocol", package="librqbit-peer-protocol", version = "3.0.0"}
+peer_binary_protocol = {path = "../peer_binary_protocol", package="librqbit-peer-protocol", version = "3.1.0"}
 sha1w = {path = "../sha1w", default-features=false, package="librqbit-sha1-wrapper", version="2.2.1"}
-dht = {path = "../dht", package="librqbit-dht", version="3.1.0"}
+dht = {path = "../dht", package="librqbit-dht", version="3.2.0"}
 
 tokio = {version = "1", features = ["macros", "rt-multi-thread"]}
 axum = {version = "0.6"}
diff --git a/crates/librqbit/src/spawn_utils.rs b/crates/librqbit/src/spawn_utils.rs
index 1e404bd..3cb4aff 100644
--- a/crates/librqbit/src/spawn_utils.rs
+++ b/crates/librqbit/src/spawn_utils.rs
@@ -1,23 +1,9 @@
-use tracing::{debug, trace, warn, Instrument};
-
 pub fn spawn(
     _name: &str,
     span: tracing::Span,
     fut: impl std::future::Future<Output = anyhow::Result<()>> + Send + 'static,
 ) -> tokio::task::JoinHandle<()> {
-    let fut = async move {
-        trace!("started");
-        match fut.await {
-            Ok(_) => {
-                debug!("finished");
-            }
-            Err(e) => {
-                warn!("finished with error: {:#}", e)
-            }
-        }
-    }
-    .instrument(span.or_current());
-    tokio::task::spawn(fut)
+    librqbit_core::spawn_utils::spawn(span, fut)
 }
 
 #[derive(Clone, Copy, Debug)]
diff --git a/crates/librqbit_core/Cargo.toml b/crates/librqbit_core/Cargo.toml
index 73ac147..4d1df54 100644
--- a/crates/librqbit_core/Cargo.toml
+++ b/crates/librqbit_core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "librqbit-core"
-version = "3.0.0"
+version = "3.1.0"
 edition = "2021"
 description = "Important utilities used throughout librqbit useful for working with torrents."
 license = "Apache-2.0"
@@ -17,6 +17,8 @@ sha1-openssl = ["bencode/sha1-openssl"]
 sha1-rust = ["bencode/sha1-rust"]
 
 [dependencies]
+tracing = "0.1.40"
+tokio = "1"
 hex = "0.4"
 anyhow = "1"
 url = "2"
diff --git a/crates/librqbit_core/src/lib.rs b/crates/librqbit_core/src/lib.rs
index 1c4d034..16e42d3 100644
--- a/crates/librqbit_core/src/lib.rs
+++ b/crates/librqbit_core/src/lib.rs
@@ -3,5 +3,6 @@ pub mod id20;
 pub mod lengths;
 pub mod magnet;
 pub mod peer_id;
+pub mod spawn_utils;
 pub mod speed_estimator;
 pub mod torrent_metainfo;
diff --git a/crates/librqbit_core/src/spawn_utils.rs b/crates/librqbit_core/src/spawn_utils.rs
new file mode 100644
index 0000000..81e9b00
--- /dev/null
+++ b/crates/librqbit_core/src/spawn_utils.rs
@@ -0,0 +1,20 @@
+use tracing::{debug, error, trace, Instrument};
+
+pub fn spawn(
+    span: tracing::Span,
+    fut: impl std::future::Future<Output = anyhow::Result<()>> + Send + 'static,
+) -> tokio::task::JoinHandle<()> {
+    let fut = async move {
+        trace!("started");
+        match fut.await {
+            Ok(_) => {
+                debug!("finished");
+            }
+            Err(e) => {
+                error!("finished with error: {:#}", e)
+            }
+        }
+    }
+    .instrument(span);
+    tokio::task::spawn(fut)
+}
diff --git a/crates/peer_binary_protocol/Cargo.toml b/crates/peer_binary_protocol/Cargo.toml
index aa0df2e..6da24f1 100644
--- a/crates/peer_binary_protocol/Cargo.toml
+++ b/crates/peer_binary_protocol/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "librqbit-peer-protocol"
-version = "3.0.0"
+version = "3.1.0"
 edition = "2021"
 description = "Protocol for working with torrent peers. Used in rqbit torrent client."
 license = "Apache-2.0"
@@ -23,6 +23,6 @@ byteorder = "1"
 buffers = {path="../buffers", package="librqbit-buffers", version = "2.2.1"}
 bencode = {path = "../bencode", default-features=false, package="librqbit-bencode", version="2.2.1"}
 clone_to_owned = {path="../clone_to_owned", package="librqbit-clone-to-owned", version = "2.2.1"}
-librqbit-core = {path="../librqbit_core", version = "3.0.0"}
+librqbit-core = {path="../librqbit_core", version = "3.1.0"}
 bitvec = "1"
 anyhow = "1"
\ No newline at end of file
diff --git a/crates/rqbit/Cargo.toml b/crates/rqbit/Cargo.toml
index e2a1d97..f879940 100644
--- a/crates/rqbit/Cargo.toml
+++ b/crates/rqbit/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rqbit"
-version = "3.3.0"
+version = "4.0.0-beta.0"
 authors = ["Igor Katson <igor.katson@gmail.com>"]
 edition = "2021"
 description = "A bittorrent command line client and server."
@@ -23,8 +23,8 @@ default-tls = ["librqbit/default-tls"]
 rust-tls = ["librqbit/rust-tls"]
 
 [dependencies]
-librqbit = {path="../librqbit", default-features=false, version = "3.3.0"}
-dht = {path="../dht", package="librqbit-dht", version="3.1.0"}
+librqbit = {path="../librqbit", default-features=false, version = "4.0.0-beta.0"}
+dht = {path="../dht", package="librqbit-dht", version="3.2.0"}
 tokio = {version = "1", features = ["macros", "rt-multi-thread"]}
 console-subscriber = {version = "0.2", optional = true}
 anyhow = "1"