Use tracing-log feature flag instead of manual initialization

This also formats `log` events more nicely. Instead of

```
Mar 29 09:46:16.775  INFO log: Found message after comparing 82 lines log.target="testcontainers::core::wait_for_message" log.module_path="testcontainers::core::wait_for_message" log.file="/home/thomas/.cargo/registry/src/github.com-1ecc6299db9ec823/testcontainers-0.12.0/src/core/wait_for_message.rs" log.line=35
```

We now have

```
Mar 29 09:57:15.860  INFO testcontainers::core::wait_for_message: Found message after comparing 81 lines
```

Cargo.lock

@@ -2004,7 +2004,6 @@ dependencies = [
  "testcontainers 0.12.0",
  "tokio",
  "tracing",
- "tracing-log",
  "tracing-subscriber",
 ]
 
@@ -3472,7 +3471,6 @@ dependencies = [
  "toml",
  "tracing",
  "tracing-futures",
- "tracing-log",
  "tracing-subscriber",
  "url",
  "uuid",
@@ -3862,6 +3860,7 @@ dependencies = [
  "thread_local",
  "tracing",
  "tracing-core",
+ "tracing-log",
 ]
 
 [[package]]

monero-harness/Cargo.toml

@@ -14,5 +14,4 @@ spectral = "0.6"
 testcontainers = "0.12"
 tokio = { version = "1", default-features = false, features = ["rt-multi-thread", "time", "macros"] }
 tracing = "0.1"
-tracing-log = "0.1"
+tracing-subscriber = { version = "0.2", default-features = false, features = ["fmt", "ansi", "env-filter", "tracing-log"] }
-tracing-subscriber = { version = "0.2", default-features = false, features = ["fmt", "ansi", "env-filter"] }

monero-harness/tests/testutils/mod.rs

@@ -1,5 +1,4 @@
 use tracing::subscriber::DefaultGuard;
-use tracing_log::LogTracer;
 
 /// Utility function to initialize logging in the test environment.
 /// Note that you have to keep the `_guard` in scope after calling in test:
@@ -8,11 +7,6 @@ use tracing_log::LogTracer;
 /// let _guard = init_tracing();
 /// ```
 pub fn init_tracing() -> DefaultGuard {
-    // converts all log records into tracing events
-    // Note: Make sure to initialize without unwrapping, otherwise this causes
-    // trouble when running multiple tests.
-    let _ = LogTracer::init();
-
     let global_filter = tracing::Level::WARN;
     let test_filter = tracing::Level::DEBUG;
     let monero_harness_filter = tracing::Level::DEBUG;

swap/Cargo.toml

@@ -52,8 +52,7 @@ tokio-util = { version = "0.6", features = ["io"] }
 toml = "0.5"
 tracing = { version = "0.1", features = ["attributes"] }
 tracing-futures = { version = "0.2", features = ["std-future", "futures-03"] }
-tracing-log = "0.1"
+tracing-subscriber = { version = "0.2", default-features = false, features = ["fmt", "ansi", "env-filter", "chrono", "tracing-log"] }
-tracing-subscriber = { version = "0.2", default-features = false, features = ["fmt", "ansi", "env-filter", "chrono"] }
 url = { version = "2", features = ["serde"] }
 uuid = { version = "0.8", features = ["serde", "v4"] }
 void = "1"

swap/src/trace.rs

@@ -1,5 +1,4 @@
 use anyhow::Result;
-use tracing_log::LogTracer;
 use tracing_subscriber::filter::LevelFilter;
 use tracing_subscriber::FmtSubscriber;
 
@@ -8,9 +7,6 @@ pub fn init_tracing(level: LevelFilter) -> Result<()> {
         return Ok(());
     }
 
-    // We want upstream library log messages, just only at Info level.
-    LogTracer::init_with_filter(tracing_log::log::LevelFilter::Info)?;
-
     let is_terminal = atty::is(atty::Stream::Stderr);
 
     let builder = FmtSubscriber::builder()

swap/tests/testutils/mod.rs

@@ -29,7 +29,6 @@ use tokio::sync::mpsc;
 use tokio::task::JoinHandle;
 use tokio::time::interval;
 use tracing::dispatcher::DefaultGuard;
-use tracing_log::LogTracer;
 use url::Url;
 use uuid::Uuid;
 
@@ -666,11 +665,6 @@ struct Containers<'a> {
 /// let _guard = init_tracing();
 /// ```
 pub fn init_tracing() -> DefaultGuard {
-    // converts all log records into tracing events
-    // Note: Make sure to initialize without unwrapping, otherwise this causes
-    // trouble when running multiple tests.
-    let _ = LogTracer::init();
-
     use tracing_subscriber::util::SubscriberInitExt as _;
     tracing_subscriber::fmt()
         .with_env_filter("warn,swap=debug,monero_harness=debug,monero_rpc=info,bitcoin_harness=info,testcontainers=info")