use tracing instead, revert this string converter function

Cargo.lock

@@ -1185,6 +1185,7 @@ dependencies = [
  "tokio",
  "toml",
  "tower-http",
+ "tracing",
  "tracing-subscriber",
  "uuid",
 ]
@@ -1587,9 +1588,21 @@ checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
  "log",
  "pin-project-lite",
+ "tracing-attributes",
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-attributes"
+version = "0.1.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tracing-core"
 version = "0.1.32"

Cargo.toml

@@ -36,6 +36,7 @@ axum = { version = "0.7.5", features = ["ws", "macros", "http2"] }
 tower-http = { version = "0.5.2", features = ["trace"] }
 tokio = { version = "1.37.0", features = ["full"] }
 tracing-subscriber = { version = "0.3.18", features = ["env-filter", "chrono"] }
+tracing = "0.1.40"
 
 # TODO: Sort it!
 # TODO: Replace Vec<u8> and &[u8] by Bytes

src/utils.rs

@@ -16,9 +16,27 @@ pub fn rand() -> [u8; 50] {
     nums
 }
 //? What is this guy doing
+#[tracing::instrument]
 pub fn bytes_into_string(code: &[u8]) -> String {
+    // This *might* be the correct way to do it.
+
     // code.iter().map(|byte| format!("{:02x}", byte)).collect::<String>() // ????? Why do you need this? Why not just String::from_utf8()??
-    String::from_utf8_lossy(code).to_string()
+    // So we need to turn each byte into a string with a 2-digit hexadecimal representation apparently...
+
+    // hex::encode_to_slice(input, output)
+
+    let res = code.iter().fold(String::new(), |mut acc, byte| {
+        acc.push_str(&format!("{:02x}", byte));
+        acc
+    }); // This is the same as the above, but with a fold instead of a map
+
+
+    // Can we do this with hex::encode instead?
+
+
+    res
+
+    // String::from_utf8_lossy(code).to_string() // Tried this, causes corrupted string
 }
 // Конец кор функций