Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

17 files changed, 2068 insertions, 0 deletions

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new file mode 100644
index 000000000..32c47092f
--- /dev/null
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+# "normalize" Cargo.toml files for maximal compatibility
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+# to registry (e.g., crates.io) dependencies.
+#
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+
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new file mode 100644
index 000000000..cb38739ee
--- /dev/null
+++ b/vendor/tracing-tree/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
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+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
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+      "Work" shall mean the work of authorship, whether in Source or
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+      "Derivative Works" shall mean any work, whether in Source or Object
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+   2. Grant of Copyright License. Subject to the terms and conditions of
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+      You may add Your own copyright statement to Your modifications and
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+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2021 tracing-tree contributors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/tracing-tree/LICENSE-MIT b/vendor/tracing-tree/LICENSE-MIT
new file mode 100644
index 000000000..d0afab4a5
--- /dev/null
+++ b/vendor/tracing-tree/LICENSE-MIT
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 tracing-tree contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/tracing-tree/README.md b/vendor/tracing-tree/README.md
new file mode 100644
index 000000000..06751d4ec
--- /dev/null
+++ b/vendor/tracing-tree/README.md
@@ -0,0 +1,38 @@
+# tracing-tree
+
+Instrument your application with [tracing](https://github.com/tokio-rs/tracing)
+and get tree-structured summaries of your application activity with timing
+information on the console:
+
+<pre> 
+ <b>server</b>{host=&quot;localhost&quot;, port=8080<b>}</b>
+    0ms <b> INFO</b> starting
+    300ms <b> INFO</b> listening
+    <b>conn</b>{peer_addr=&quot;82.9.9.9&quot;, port=42381<b>}</b>
+      0ms <b>DEBUG</b> connected
+      300ms <b>DEBUG</b> message received, length=2
+    <b>conn</b>{peer_addr=&quot;8.8.8.8&quot;, port=18230<b>}</b>
+      300ms <b>DEBUG</b> connected
+    <b>conn</b>{peer_addr=&quot;82.9.9.9&quot;, port=42381<b>}</b>
+      600ms <b> WARN</b> weak encryption requested, algo=&quot;xor&quot;
+      901ms <b>DEBUG</b> response sent, length=8
+      901ms <b>DEBUG</b> disconnected
+    <b>conn</b>{peer_addr=&quot;8.8.8.8&quot;, port=18230<b>}</b>
+      600ms <b>DEBUG</b> message received, length=5
+      901ms <b>DEBUG</b> response sent, length=8
+      901ms <b>DEBUG</b> disconnected
+    1502ms <b> WARN</b> internal error
+    1502ms <b> INFO</b> exit
+</pre>
+
+(Format inspired by [slog-term](https://github.com/slog-rs/slog#terminal-output-example))
+
+## Setup
+
+After instrumenting your app with
+[tracing](https://github.com/tokio-rs/tracing), add this subscriber like this:
+
+```rust
+let subscriber = Registry::default().with(HierarchicalLayer::new(2));
+tracing::subscriber::set_global_default(subscriber).unwrap();
+```
\ No newline at end of file
diff --git a/vendor/tracing-tree/examples/basic.rs b/vendor/tracing-tree/examples/basic.rs
new file mode 100644
index 000000000..97f6263ff
--- /dev/null
+++ b/vendor/tracing-tree/examples/basic.rs
@@ -0,0 +1,83 @@
+use tracing::{debug, error, info, instrument, span, warn, Level};
+use tracing_subscriber::{layer::SubscriberExt, registry::Registry};
+use tracing_tree::HierarchicalLayer;
+
+fn main() {
+    let layer = HierarchicalLayer::default()
+        .with_writer(std::io::stdout)
+        .with_indent_lines(true)
+        .with_indent_amount(2)
+        .with_thread_names(true)
+        .with_thread_ids(true)
+        .with_verbose_exit(true)
+        .with_verbose_entry(true)
+        .with_targets(true);
+
+    let subscriber = Registry::default().with(layer);
+    tracing::subscriber::set_global_default(subscriber).unwrap();
+    #[cfg(feature = "tracing-log")]
+    tracing_log::LogTracer::init().unwrap();
+
+    let app_span = span!(Level::TRACE, "hierarchical-example", version = %0.1);
+    let _e = app_span.enter();
+
+    let server_span = span!(Level::TRACE, "server", host = "localhost", port = 8080);
+    let _e2 = server_span.enter();
+    info!("starting");
+    std::thread::sleep(std::time::Duration::from_millis(300));
+    info!("listening");
+    let peer1 = span!(Level::TRACE, "conn", peer_addr = "82.9.9.9", port = 42381);
+    peer1.in_scope(|| {
+        debug!("connected");
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!(length = 2, "message received");
+    });
+    drop(peer1);
+    let peer2 = span!(Level::TRACE, "conn", peer_addr = "8.8.8.8", port = 18230);
+    peer2.in_scope(|| {
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!("connected");
+    });
+    drop(peer2);
+    let peer3 = span!(
+        Level::TRACE,
+        "foomp",
+        normal_var = 43,
+        "{} <- format string",
+        42
+    );
+    peer3.in_scope(|| {
+        error!("hello");
+    });
+    drop(peer3);
+    let peer1 = span!(Level::TRACE, "conn", peer_addr = "82.9.9.9", port = 42381);
+    peer1.in_scope(|| {
+        warn!(algo = "xor", "weak encryption requested");
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!(length = 8, "response sent");
+        debug!("disconnected");
+    });
+    drop(peer1);
+    let peer2 = span!(Level::TRACE, "conn", peer_addr = "8.8.8.8", port = 18230);
+    peer2.in_scope(|| {
+        debug!(length = 5, "message received");
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!(length = 8, "response sent");
+        debug!("disconnected");
+    });
+    drop(peer2);
+    warn!("internal error");
+    log::error!("this is a log message");
+    info!("exit");
+}
+
+#[instrument]
+fn call_a(name: &str) {
+    info!(name, "got a name");
+    call_b(name)
+}
+
+#[instrument]
+fn call_b(name: &str) {
+    info!(name, "got a name");
+}
diff --git a/vendor/tracing-tree/examples/basic.stdout b/vendor/tracing-tree/examples/basic.stdout
new file mode 100644
index 000000000..4a2d83f11
--- /dev/null
+++ b/vendor/tracing-tree/examples/basic.stdout
@@ -0,0 +1,41 @@
+1:main┐basic::hierarchical-example version=0.1
+1:main├┐basic::hierarchical-example version=0.1
+1:main│└┐basic::server host="localhost", port=8080
+1:main│ ├─ms INFO basic starting
+1:main│ ├─ms INFO basic listening
+1:main│ ├┐basic::server host="localhost", port=8080
+1:main│ │└┐basic::conn peer_addr="82.9.9.9", port=42381
+1:main│ │ ├─ms DEBUG basic connected
+1:main│ │ ├─ms DEBUG basic message received, length=2
+1:main│ │┌┘basic::conn peer_addr="82.9.9.9", port=42381
+1:main│ ├┘basic::server host="localhost", port=8080
+1:main│ ├┐basic::server host="localhost", port=8080
+1:main│ │└┐basic::conn peer_addr="8.8.8.8", port=18230
+1:main│ │ ├─ms DEBUG basic connected
+1:main│ │┌┘basic::conn peer_addr="8.8.8.8", port=18230
+1:main│ ├┘basic::server host="localhost", port=8080
+1:main│ ├┐basic::server host="localhost", port=8080
+1:main│ │└┐basic::foomp 42 <- format string, normal_var=43
+1:main│ │ ├─ms ERROR basic hello
+1:main│ │┌┘basic::foomp 42 <- format string, normal_var=43
+1:main│ ├┘basic::server host="localhost", port=8080
+1:main│ ├┐basic::server host="localhost", port=8080
+1:main│ │└┐basic::conn peer_addr="82.9.9.9", port=42381
+1:main│ │ ├─ms WARN basic weak encryption requested, algo="xor"
+1:main│ │ ├─ms DEBUG basic response sent, length=8
+1:main│ │ ├─ms DEBUG basic disconnected
+1:main│ │┌┘basic::conn peer_addr="82.9.9.9", port=42381
+1:main│ ├┘basic::server host="localhost", port=8080
+1:main│ ├┐basic::server host="localhost", port=8080
+1:main│ │└┐basic::conn peer_addr="8.8.8.8", port=18230
+1:main│ │ ├─ms DEBUG basic message received, length=5
+1:main│ │ ├─ms DEBUG basic response sent, length=8
+1:main│ │ ├─ms DEBUG basic disconnected
+1:main│ │┌┘basic::conn peer_addr="8.8.8.8", port=18230
+1:main│ ├┘basic::server host="localhost", port=8080
+1:main│ ├─ms WARN basic internal error
+1:main│ ├─ms ERROR basic this is a log message
+1:main│ ├─ms INFO basic exit
+1:main│┌┘basic::server host="localhost", port=8080
+1:main├┘basic::hierarchical-example version=0.1
+1:main┘basic::hierarchical-example version=0.1
diff --git a/vendor/tracing-tree/examples/quiet.rs b/vendor/tracing-tree/examples/quiet.rs
new file mode 100644
index 000000000..81b0c9c2f
--- /dev/null
+++ b/vendor/tracing-tree/examples/quiet.rs
@@ -0,0 +1,80 @@
+use tracing::{debug, error, info, instrument, span, warn, Level};
+use tracing_subscriber::{layer::SubscriberExt, registry::Registry};
+use tracing_tree::HierarchicalLayer;
+
+fn main() {
+    let layer = HierarchicalLayer::default()
+        .with_writer(std::io::stdout)
+        .with_indent_lines(true)
+        .with_indent_amount(2)
+        .with_thread_names(true)
+        .with_thread_ids(true)
+        .with_verbose_exit(false)
+        .with_verbose_entry(false)
+        .with_targets(true);
+
+    let subscriber = Registry::default().with(layer);
+    tracing::subscriber::set_global_default(subscriber).unwrap();
+
+    let app_span = span!(Level::TRACE, "hierarchical-example", version = %0.1);
+    let _e = app_span.enter();
+
+    let server_span = span!(Level::TRACE, "server", host = "localhost", port = 8080);
+    let _e2 = server_span.enter();
+    info!("starting");
+    std::thread::sleep(std::time::Duration::from_millis(300));
+    info!("listening");
+    let peer1 = span!(Level::TRACE, "conn", peer_addr = "82.9.9.9", port = 42381);
+    peer1.in_scope(|| {
+        debug!("connected");
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!(length = 2, "message received");
+    });
+    drop(peer1);
+    let peer2 = span!(Level::TRACE, "conn", peer_addr = "8.8.8.8", port = 18230);
+    peer2.in_scope(|| {
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!("connected");
+    });
+    drop(peer2);
+    let peer3 = span!(
+        Level::TRACE,
+        "foomp",
+        normal_var = 43,
+        "{} <- format string",
+        42
+    );
+    peer3.in_scope(|| {
+        error!("hello");
+    });
+    drop(peer3);
+    let peer1 = span!(Level::TRACE, "conn", peer_addr = "82.9.9.9", port = 42381);
+    peer1.in_scope(|| {
+        warn!(algo = "xor", "weak encryption requested");
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!(length = 8, "response sent");
+        debug!("disconnected");
+    });
+    drop(peer1);
+    let peer2 = span!(Level::TRACE, "conn", peer_addr = "8.8.8.8", port = 18230);
+    peer2.in_scope(|| {
+        debug!(length = 5, "message received");
+        std::thread::sleep(std::time::Duration::from_millis(300));
+        debug!(length = 8, "response sent");
+        debug!("disconnected");
+    });
+    drop(peer2);
+    warn!("internal error");
+    info!("exit");
+}
+
+#[instrument]
+fn call_a(name: &str) {
+    info!(name, "got a name");
+    call_b(name)
+}
+
+#[instrument]
+fn call_b(name: &str) {
+    info!(name, "got a name");
+}
diff --git a/vendor/tracing-tree/examples/quiet.stdout b/vendor/tracing-tree/examples/quiet.stdout
new file mode 100644
index 000000000..96589655a
--- /dev/null
+++ b/vendor/tracing-tree/examples/quiet.stdout
@@ -0,0 +1,28 @@
+1:main┐quiet::hierarchical-example version=0.1
+1:main├─┐quiet::server host="localhost", port=8080
+1:main│ ├─ms INFO quiet starting
+1:main│ ├─ms INFO quiet listening
+1:main│ ├─┐quiet::conn peer_addr="82.9.9.9", port=42381
+1:main│ │ ├─ms DEBUG quiet connected
+1:main│ │ ├─ms DEBUG quiet message received, length=2
+1:main│ ├─┘
+1:main│ ├─┐quiet::conn peer_addr="8.8.8.8", port=18230
+1:main│ │ ├─ms DEBUG quiet connected
+1:main│ ├─┘
+1:main│ ├─┐quiet::foomp 42 <- format string, normal_var=43
+1:main│ │ ├─ms ERROR quiet hello
+1:main│ ├─┘
+1:main│ ├─┐quiet::conn peer_addr="82.9.9.9", port=42381
+1:main│ │ ├─ms WARN quiet weak encryption requested, algo="xor"
+1:main│ │ ├─ms DEBUG quiet response sent, length=8
+1:main│ │ ├─ms DEBUG quiet disconnected
+1:main│ ├─┘
+1:main│ ├─┐quiet::conn peer_addr="8.8.8.8", port=18230
+1:main│ │ ├─ms DEBUG quiet message received, length=5
+1:main│ │ ├─ms DEBUG quiet response sent, length=8
+1:main│ │ ├─ms DEBUG quiet disconnected
+1:main│ ├─┘
+1:main│ ├─ms WARN quiet internal error
+1:main│ ├─ms INFO quiet exit
+1:main├─┘
+1:main┘
diff --git a/vendor/tracing-tree/examples/stderr.rs b/vendor/tracing-tree/examples/stderr.rs
new file mode 100644
index 000000000..75880a376
--- /dev/null
+++ b/vendor/tracing-tree/examples/stderr.rs
@@ -0,0 +1,40 @@
+use tracing::{debug, info, instrument};
+use tracing_subscriber::{layer::SubscriberExt, registry::Registry};
+use tracing_tree::HierarchicalLayer;
+
+#[instrument]
+fn nth_fibonacci(n: u64) -> u64 {
+    if n == 0 || n == 1 {
+        debug!("Base case");
+        1
+    } else {
+        debug!("Recursing");
+        nth_fibonacci(n - 1) + nth_fibonacci(n - 2)
+    }
+}
+
+#[instrument]
+fn fibonacci_seq(to: u64) -> Vec<u64> {
+    let mut sequence = vec![];
+
+    for n in 0..=to {
+        debug!("Pushing {n} fibonacci", n = n);
+        sequence.push(nth_fibonacci(n));
+    }
+
+    sequence
+}
+
+fn main() {
+    let layer = HierarchicalLayer::default()
+        .with_indent_lines(true)
+        .with_indent_amount(2)
+        .with_bracketed_fields(true);
+
+    let subscriber = Registry::default().with(layer);
+    tracing::subscriber::set_global_default(subscriber).unwrap();
+
+    let n = 5;
+    let sequence = fibonacci_seq(n);
+    info!("The first {} fibonacci numbers are {:?}", n, sequence);
+}
diff --git a/vendor/tracing-tree/examples/stderr.stderr b/vendor/tracing-tree/examples/stderr.stderr
new file mode 100644
index 000000000..0060f268f
--- /dev/null
+++ b/vendor/tracing-tree/examples/stderr.stderr
@@ -0,0 +1,111 @@
+┐fibonacci_seq{to=5}
+├─ms DEBUG Pushing 0 fibonacci
+├─┐nth_fibonacci{n=0}
+│ ├─ms DEBUG Base case
+├─┘
+├─ms DEBUG Pushing 1 fibonacci
+├─┐nth_fibonacci{n=1}
+│ ├─ms DEBUG Base case
+├─┘
+├─ms DEBUG Pushing 2 fibonacci
+├─┐nth_fibonacci{n=2}
+│ ├─ms DEBUG Recursing
+│ ├─┐nth_fibonacci{n=1}
+│ │ ├─ms DEBUG Base case
+│ ├─┘
+│ ├─┐nth_fibonacci{n=0}
+│ │ ├─ms DEBUG Base case
+│ ├─┘
+├─┘
+├─ms DEBUG Pushing 3 fibonacci
+├─┐nth_fibonacci{n=3}
+│ ├─ms DEBUG Recursing
+│ ├─┐nth_fibonacci{n=2}
+│ │ ├─ms DEBUG Recursing
+│ │ ├─┐nth_fibonacci{n=1}
+│ │ │ ├─ms DEBUG Base case
+│ │ ├─┘
+│ │ ├─┐nth_fibonacci{n=0}
+│ │ │ ├─ms DEBUG Base case
+│ │ ├─┘
+│ ├─┘
+│ ├─┐nth_fibonacci{n=1}
+│ │ ├─ms DEBUG Base case
+│ ├─┘
+├─┘
+├─ms DEBUG Pushing 4 fibonacci
+├─┐nth_fibonacci{n=4}
+│ ├─ms DEBUG Recursing
+│ ├─┐nth_fibonacci{n=3}
+│ │ ├─ms DEBUG Recursing
+│ │ ├─┐nth_fibonacci{n=2}
+│ │ │ ├─ms DEBUG Recursing
+│ │ │ ├─┐nth_fibonacci{n=1}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ │ ├─┐nth_fibonacci{n=0}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ ├─┘
+│ │ ├─┐nth_fibonacci{n=1}
+│ │ │ ├─ms DEBUG Base case
+│ │ ├─┘
+│ ├─┘
+│ ├─┐nth_fibonacci{n=2}
+│ │ ├─ms DEBUG Recursing
+│ │ ├─┐nth_fibonacci{n=1}
+│ │ │ ├─ms DEBUG Base case
+│ │ ├─┘
+│ │ ├─┐nth_fibonacci{n=0}
+│ │ │ ├─ms DEBUG Base case
+│ │ ├─┘
+│ ├─┘
+├─┘
+├─ms DEBUG Pushing 5 fibonacci
+├─┐nth_fibonacci{n=5}
+│ ├─ms DEBUG Recursing
+│ ├─┐nth_fibonacci{n=4}
+│ │ ├─ms DEBUG Recursing
+│ │ ├─┐nth_fibonacci{n=3}
+│ │ │ ├─ms DEBUG Recursing
+│ │ │ ├─┐nth_fibonacci{n=2}
+│ │ │ │ ├─ms DEBUG Recursing
+│ │ │ │ ├─┐nth_fibonacci{n=1}
+│ │ │ │ │ ├─ms DEBUG Base case
+│ │ │ │ ├─┘
+│ │ │ │ ├─┐nth_fibonacci{n=0}
+│ │ │ │ │ ├─ms DEBUG Base case
+│ │ │ │ ├─┘
+│ │ │ ├─┘
+│ │ │ ├─┐nth_fibonacci{n=1}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ ├─┘
+│ │ ├─┐nth_fibonacci{n=2}
+│ │ │ ├─ms DEBUG Recursing
+│ │ │ ├─┐nth_fibonacci{n=1}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ │ ├─┐nth_fibonacci{n=0}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ ├─┘
+│ ├─┘
+│ ├─┐nth_fibonacci{n=3}
+│ │ ├─ms DEBUG Recursing
+│ │ ├─┐nth_fibonacci{n=2}
+│ │ │ ├─ms DEBUG Recursing
+│ │ │ ├─┐nth_fibonacci{n=1}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ │ ├─┐nth_fibonacci{n=0}
+│ │ │ │ ├─ms DEBUG Base case
+│ │ │ ├─┘
+│ │ ├─┘
+│ │ ├─┐nth_fibonacci{n=1}
+│ │ │ ├─ms DEBUG Base case
+│ │ ├─┘
+│ ├─┘
+├─┘
+┘
+INFO The first 5 fibonacci numbers are [1, 1, 2, 3, 5, 8]
diff --git a/vendor/tracing-tree/examples/wraparound.rs b/vendor/tracing-tree/examples/wraparound.rs
new file mode 100644
index 000000000..e045eb9f2
--- /dev/null
+++ b/vendor/tracing-tree/examples/wraparound.rs
@@ -0,0 +1,31 @@
+use tracing::{instrument, warn};
+use tracing_subscriber::{layer::SubscriberExt, registry::Registry};
+use tracing_tree::HierarchicalLayer;
+
+fn main() {
+    let layer = HierarchicalLayer::default()
+        .with_writer(std::io::stdout)
+        .with_indent_lines(true)
+        .with_indent_amount(2)
+        .with_thread_names(true)
+        .with_thread_ids(true)
+        .with_targets(true)
+        .with_wraparound(5);
+
+    let subscriber = Registry::default().with(layer);
+    tracing::subscriber::set_global_default(subscriber).unwrap();
+
+    recurse(0);
+}
+
+#[instrument]
+fn recurse(i: usize) {
+    warn!("boop");
+    if i > 20 {
+        warn!("bop");
+        return;
+    } else {
+        recurse(i + 1);
+    }
+    warn!("bop");
+}
diff --git a/vendor/tracing-tree/examples/wraparound.stdout b/vendor/tracing-tree/examples/wraparound.stdout
new file mode 100644
index 000000000..bbf422545
--- /dev/null
+++ b/vendor/tracing-tree/examples/wraparound.stdout
@@ -0,0 +1,96 @@
+1:main┐wraparound::recurse i=0
+1:main├─ms WARN wraparound boop
+1:main├─┐wraparound::recurse i=1
+1:main│ ├─ms WARN wraparound boop
+1:main│ ├─┐wraparound::recurse i=2
+1:main│ │ ├─ms WARN wraparound boop
+1:main│ │ ├─┐wraparound::recurse i=3
+1:main│ │ │ ├─ms WARN wraparound boop
+1:main│ │ │ ├─┐wraparound::recurse i=4
+1:main────────┘
+1:mainms WARN wraparound boop
+1:main┐wraparound::recurse i=5
+1:main├─ms WARN wraparound boop
+1:main├─┐wraparound::recurse i=6
+1:main│ ├─ms WARN wraparound boop
+1:main│ ├─┐wraparound::recurse i=7
+1:main│ │ ├─ms WARN wraparound boop
+1:main│ │ ├─┐wraparound::recurse i=8
+1:main│ │ │ ├─ms WARN wraparound boop
+1:main│ │ │ ├─┐wraparound::recurse i=9
+1:main────────┘
+1:mainms WARN wraparound boop
+1:main┐wraparound::recurse i=10
+1:main├─ms WARN wraparound boop
+1:main├─┐wraparound::recurse i=11
+1:main│ ├─ms WARN wraparound boop
+1:main│ ├─┐wraparound::recurse i=12
+1:main│ │ ├─ms WARN wraparound boop
+1:main│ │ ├─┐wraparound::recurse i=13
+1:main│ │ │ ├─ms WARN wraparound boop
+1:main│ │ │ ├─┐wraparound::recurse i=14
+1:main────────┘
+1:mainms WARN wraparound boop
+1:main┐wraparound::recurse i=15
+1:main├─ms WARN wraparound boop
+1:main├─┐wraparound::recurse i=16
+1:main│ ├─ms WARN wraparound boop
+1:main│ ├─┐wraparound::recurse i=17
+1:main│ │ ├─ms WARN wraparound boop
+1:main│ │ ├─┐wraparound::recurse i=18
+1:main│ │ │ ├─ms WARN wraparound boop
+1:main│ │ │ ├─┐wraparound::recurse i=19
+1:main────────┘
+1:mainms WARN wraparound boop
+1:main┐wraparound::recurse i=20
+1:main├─ms WARN wraparound boop
+1:main├─┐wraparound::recurse i=21
+1:main│ ├─ms WARN wraparound boop
+1:main│ ├─ms WARN wraparound bop
+1:main├─┘
+1:main├─ms WARN wraparound bop
+1:main┘
+1:mainms WARN wraparound bop
+1:main────────┐
+1:main│ │ │ ├─┘
+1:main│ │ │ ├─ms WARN wraparound bop
+1:main│ │ ├─┘
+1:main│ │ ├─ms WARN wraparound bop
+1:main│ ├─┘
+1:main│ ├─ms WARN wraparound bop
+1:main├─┘
+1:main├─ms WARN wraparound bop
+1:main┘
+1:mainms WARN wraparound bop
+1:main────────┐
+1:main│ │ │ ├─┘
+1:main│ │ │ ├─ms WARN wraparound bop
+1:main│ │ ├─┘
+1:main│ │ ├─ms WARN wraparound bop
+1:main│ ├─┘
+1:main│ ├─ms WARN wraparound bop
+1:main├─┘
+1:main├─ms WARN wraparound bop
+1:main┘
+1:mainms WARN wraparound bop
+1:main────────┐
+1:main│ │ │ ├─┘
+1:main│ │ │ ├─ms WARN wraparound bop
+1:main│ │ ├─┘
+1:main│ │ ├─ms WARN wraparound bop
+1:main│ ├─┘
+1:main│ ├─ms WARN wraparound bop
+1:main├─┘
+1:main├─ms WARN wraparound bop
+1:main┘
+1:mainms WARN wraparound bop
+1:main────────┐
+1:main│ │ │ ├─┘
+1:main│ │ │ ├─ms WARN wraparound bop
+1:main│ │ ├─┘
+1:main│ │ ├─ms WARN wraparound bop
+1:main│ ├─┘
+1:main│ ├─ms WARN wraparound bop
+1:main├─┘
+1:main├─ms WARN wraparound bop
+1:main┘
diff --git a/vendor/tracing-tree/src/format.rs b/vendor/tracing-tree/src/format.rs
new file mode 100644
index 000000000..067ea9771
--- /dev/null
+++ b/vendor/tracing-tree/src/format.rs
@@ -0,0 +1,425 @@
+use ansi_term::Color;
+use std::{
+    fmt::{self, Write as _},
+    io,
+};
+use tracing_core::{
+    field::{Field, Visit},
+    Level,
+};
+
+pub(crate) const LINE_VERT: &str = "│";
+const LINE_HORIZ: &str = "─";
+pub(crate) const LINE_BRANCH: &str = "├";
+pub(crate) const LINE_CLOSE: &str = "┘";
+pub(crate) const LINE_OPEN: &str = "┐";
+
+#[derive(Copy, Clone)]
+pub(crate) enum SpanMode {
+    PreOpen,
+    Open { verbose: bool },
+    Close { verbose: bool },
+    PostClose,
+    Event,
+}
+
+#[derive(Debug)]
+pub struct Config {
+    /// Whether to use colors.
+    pub ansi: bool,
+    /// Whether an ascii art tree is used or (if false) whether to just use whitespace indent
+    pub indent_lines: bool,
+    /// The amount of chars to indent.
+    pub indent_amount: usize,
+    /// Whether to show the module paths.
+    pub targets: bool,
+    /// Whether to show thread ids.
+    pub render_thread_ids: bool,
+    /// Whether to show thread names.
+    pub render_thread_names: bool,
+    /// Specifies after how many indentation levels we will wrap back around to zero
+    pub wraparound: usize,
+    /// Whether to print the current span before activating a new one
+    pub verbose_entry: bool,
+    /// Whether to print the current span before exiting it.
+    pub verbose_exit: bool,
+    /// Whether to print squiggly brackets (`{}`) around the list of fields in a span.
+    pub bracketed_fields: bool,
+}
+
+impl Config {
+    pub fn with_ansi(self, ansi: bool) -> Self {
+        Self { ansi, ..self }
+    }
+
+    pub fn with_indent_lines(self, indent_lines: bool) -> Self {
+        Self {
+            indent_lines,
+            ..self
+        }
+    }
+
+    pub fn with_targets(self, targets: bool) -> Self {
+        Self { targets, ..self }
+    }
+
+    pub fn with_thread_ids(self, render_thread_ids: bool) -> Self {
+        Self {
+            render_thread_ids,
+            ..self
+        }
+    }
+
+    pub fn with_thread_names(self, render_thread_names: bool) -> Self {
+        Self {
+            render_thread_names,
+            ..self
+        }
+    }
+
+    pub fn with_wraparound(self, wraparound: usize) -> Self {
+        Self { wraparound, ..self }
+    }
+
+    pub fn with_verbose_entry(self, verbose_entry: bool) -> Self {
+        Self {
+            verbose_entry,
+            ..self
+        }
+    }
+
+    pub fn with_verbose_exit(self, verbose_exit: bool) -> Self {
+        Self {
+            verbose_exit,
+            ..self
+        }
+    }
+
+    pub fn with_bracketed_fields(self, bracketed_fields: bool) -> Self {
+        Self {
+            bracketed_fields,
+            ..self
+        }
+    }
+
+    pub(crate) fn prefix(&self) -> String {
+        let mut buf = String::new();
+        if self.render_thread_ids {
+            write!(buf, "{:?}", std::thread::current().id()).unwrap();
+            if buf.ends_with(')') {
+                buf.truncate(buf.len() - 1);
+            }
+            if buf.starts_with("ThreadId(") {
+                buf.drain(0.."ThreadId(".len());
+            }
+        }
+        if self.render_thread_names {
+            if let Some(name) = std::thread::current().name() {
+                if self.render_thread_ids {
+                    buf.push(':');
+                }
+                buf.push_str(name);
+            }
+        }
+        buf
+    }
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            ansi: true,
+            indent_lines: false,
+            indent_amount: 2,
+            targets: false,
+            render_thread_ids: false,
+            render_thread_names: false,
+            wraparound: usize::max_value(),
+            verbose_entry: false,
+            verbose_exit: false,
+            bracketed_fields: false,
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct Buffers {
+    pub current_buf: String,
+    pub indent_buf: String,
+}
+
+impl Buffers {
+    pub fn new() -> Self {
+        Self {
+            current_buf: String::new(),
+            indent_buf: String::new(),
+        }
+    }
+
+    pub fn flush_current_buf(&mut self, mut writer: impl io::Write) {
+        write!(writer, "{}", &self.current_buf).unwrap();
+        self.current_buf.clear();
+    }
+
+    pub fn flush_indent_buf(&mut self) {
+        self.current_buf.push_str(&self.indent_buf);
+        self.indent_buf.clear();
+    }
+
+    pub(crate) fn indent_current(&mut self, indent: usize, config: &Config, style: SpanMode) {
+        self.current_buf.push('\n');
+        let prefix = config.prefix();
+
+        // Render something when wraparound occurs so the user is aware of it
+        if config.indent_lines {
+            match style {
+                SpanMode::Close { .. } | SpanMode::PostClose => {
+                    if indent > 0 && (indent + 1) % config.wraparound == 0 {
+                        self.indent_buf.push_str(&prefix);
+                        for _ in 0..(indent % config.wraparound * config.indent_amount) {
+                            self.indent_buf.push_str(LINE_HORIZ);
+                        }
+                        self.indent_buf.push_str(LINE_OPEN);
+                        self.indent_buf.push('\n');
+                    }
+                }
+                _ => {}
+            }
+        }
+
+        indent_block(
+            &mut self.current_buf,
+            &mut self.indent_buf,
+            indent % config.wraparound,
+            config.indent_amount,
+            config.indent_lines,
+            &prefix,
+            style,
+        );
+        self.current_buf.clear();
+        self.flush_indent_buf();
+
+        // Render something when wraparound occurs so the user is aware of it
+        if config.indent_lines {
+            match style {
+                SpanMode::PreOpen | SpanMode::Open { .. } => {
+                    if indent > 0 && (indent + 1) % config.wraparound == 0 {
+                        self.current_buf.push_str(&prefix);
+                        for _ in 0..(indent % config.wraparound * config.indent_amount) {
+                            self.current_buf.push_str(LINE_HORIZ);
+                        }
+                        self.current_buf.push_str(LINE_CLOSE);
+                        self.current_buf.push('\n');
+                    }
+                }
+                _ => {}
+            }
+        }
+    }
+}
+
+pub struct FmtEvent<'a> {
+    pub bufs: &'a mut Buffers,
+    pub comma: bool,
+}
+
+impl<'a> Visit for FmtEvent<'a> {
+    fn record_debug(&mut self, field: &Field, value: &dyn fmt::Debug) {
+        let buf = &mut self.bufs.current_buf;
+        let comma = if self.comma { "," } else { "" };
+        match field.name() {
+            "message" => {
+                write!(buf, "{} {:?}", comma, value).unwrap();
+                self.comma = true;
+            }
+            // Skip fields that are actually log metadata that have already been handled
+            #[cfg(feature = "tracing-log")]
+            name if name.starts_with("log.") => {}
+            name => {
+                write!(buf, "{} {}={:?}", comma, name, value).unwrap();
+                self.comma = true;
+            }
+        }
+    }
+}
+
+pub struct ColorLevel<'a>(pub &'a Level);
+
+impl<'a> fmt::Display for ColorLevel<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self.0 {
+            Level::TRACE => Color::Purple.bold().paint("TRACE"),
+            Level::DEBUG => Color::Blue.bold().paint("DEBUG"),
+            Level::INFO => Color::Green.bold().paint(" INFO"),
+            Level::WARN => Color::RGB(252, 234, 160).bold().paint(" WARN"), // orange
+            Level::ERROR => Color::Red.bold().paint("ERROR"),
+        }
+        .fmt(f)
+    }
+}
+
+fn indent_block_with_lines(
+    lines: &[&str],
+    buf: &mut String,
+    indent: usize,
+    indent_amount: usize,
+    prefix: &str,
+    style: SpanMode,
+) {
+    let indent_spaces = indent * indent_amount;
+    if lines.is_empty() {
+        return;
+    } else if indent_spaces == 0 {
+        for line in lines {
+            buf.push_str(prefix);
+            // The first indent is special, we only need to print open/close and nothing else
+            if indent == 0 {
+                match style {
+                    SpanMode::Open { .. } => buf.push_str(LINE_OPEN),
+                    SpanMode::Close { .. } => buf.push_str(LINE_CLOSE),
+                    SpanMode::PreOpen | SpanMode::PostClose => {}
+                    SpanMode::Event => {}
+                }
+            }
+            buf.push_str(line);
+            buf.push('\n');
+        }
+        return;
+    }
+    let mut s = String::with_capacity(indent_spaces + prefix.len());
+    s.push_str(prefix);
+
+    // instead of using all spaces to indent, draw a vertical line at every indent level
+    // up until the last indent
+    for i in 0..(indent_spaces - indent_amount) {
+        if i % indent_amount == 0 {
+            s.push_str(LINE_VERT);
+        } else {
+            s.push(' ');
+        }
+    }
+
+    // draw branch
+    buf.push_str(&s);
+
+    match style {
+        SpanMode::PreOpen => {
+            buf.push_str(LINE_BRANCH);
+            for _ in 1..(indent_amount / 2) {
+                buf.push_str(LINE_HORIZ);
+            }
+            buf.push_str(LINE_OPEN);
+        }
+        SpanMode::Open { verbose: false } => {
+            buf.push_str(LINE_BRANCH);
+            for _ in 1..indent_amount {
+                buf.push_str(LINE_HORIZ);
+            }
+            buf.push_str(LINE_OPEN);
+        }
+        SpanMode::Open { verbose: true } => {
+            buf.push_str(LINE_VERT);
+            for _ in 1..(indent_amount / 2) {
+                buf.push(' ');
+            }
+            // We don't have the space for fancy rendering at single space indent.
+            if indent_amount > 1 {
+                buf.push('└');
+            }
+            for _ in (indent_amount / 2)..(indent_amount - 1) {
+                buf.push_str(LINE_HORIZ);
+            }
+            // We don't have the space for fancy rendering at single space indent.
+            if indent_amount > 1 {
+                buf.push_str(LINE_OPEN);
+            } else {
+                buf.push_str(LINE_VERT);
+            }
+        }
+        SpanMode::Close { verbose: false } => {
+            buf.push_str(LINE_BRANCH);
+            for _ in 1..indent_amount {
+                buf.push_str(LINE_HORIZ);
+            }
+            buf.push_str(LINE_CLOSE);
+        }
+        SpanMode::Close { verbose: true } => {
+            buf.push_str(LINE_VERT);
+            for _ in 1..(indent_amount / 2) {
+                buf.push(' ');
+            }
+            // We don't have the space for fancy rendering at single space indent.
+            if indent_amount > 1 {
+                buf.push('┌');
+            }
+            for _ in (indent_amount / 2)..(indent_amount - 1) {
+                buf.push_str(LINE_HORIZ);
+            }
+            // We don't have the space for fancy rendering at single space indent.
+            if indent_amount > 1 {
+                buf.push_str(LINE_CLOSE);
+            } else {
+                buf.push_str(LINE_VERT);
+            }
+        }
+        SpanMode::PostClose => {
+            buf.push_str(LINE_BRANCH);
+            for _ in 1..(indent_amount / 2) {
+                buf.push_str(LINE_HORIZ);
+            }
+            buf.push_str(LINE_CLOSE);
+        }
+        SpanMode::Event => {
+            buf.push_str(LINE_BRANCH);
+
+            // add `indent_amount - 1` horizontal lines before the span/event
+            for _ in 0..(indent_amount - 1) {
+                buf.push_str(LINE_HORIZ);
+            }
+        }
+    }
+    buf.push_str(lines[0]);
+    buf.push('\n');
+
+    // add the rest of the indentation, since we don't want to draw horizontal lines
+    // for subsequent lines
+    for i in 0..indent_amount {
+        if i % indent_amount == 0 {
+            s.push_str(LINE_VERT);
+        } else {
+            s.push(' ');
+        }
+    }
+
+    // add all of the actual content, with each line preceded by the indent string
+    for line in &lines[1..] {
+        buf.push_str(&s);
+        buf.push_str(line);
+        buf.push('\n');
+    }
+}
+
+fn indent_block(
+    block: &mut String,
+    buf: &mut String,
+    indent: usize,
+    indent_amount: usize,
+    indent_lines: bool,
+    prefix: &str,
+    style: SpanMode,
+) {
+    let lines: Vec<&str> = block.lines().collect();
+    let indent_spaces = indent * indent_amount;
+    buf.reserve(block.len() + (lines.len() * indent_spaces));
+    if indent_lines {
+        indent_block_with_lines(&lines, buf, indent, indent_amount, prefix, style);
+    } else {
+        let indent_str = String::from(" ").repeat(indent_spaces);
+        for line in lines {
+            buf.push_str(prefix);
+            buf.push_str(&indent_str);
+            buf.push_str(line);
+            buf.push('\n');
+        }
+    }
+}
diff --git a/vendor/tracing-tree/src/lib.rs b/vendor/tracing-tree/src/lib.rs
new file mode 100644
index 000000000..dbacaa57e
--- /dev/null
+++ b/vendor/tracing-tree/src/lib.rs
@@ -0,0 +1,395 @@
+pub(crate) mod format;
+
+use ansi_term::{Color, Style};
+use format::{Buffers, ColorLevel, Config, FmtEvent, SpanMode};
+use std::{
+    fmt::{self, Write as _},
+    io,
+    sync::Mutex,
+    time::Instant,
+};
+use tracing_core::{
+    field::{Field, Visit},
+    span::{Attributes, Id},
+    Event, Subscriber,
+};
+#[cfg(feature = "tracing-log")]
+use tracing_log::NormalizeEvent;
+use tracing_subscriber::{
+    fmt::MakeWriter,
+    layer::{Context, Layer},
+    registry::{self, LookupSpan},
+};
+
+pub(crate) struct Data {
+    start: Instant,
+    kvs: Vec<(&'static str, String)>,
+}
+
+impl Data {
+    pub fn new(attrs: &Attributes<'_>) -> Self {
+        let mut span = Self {
+            start: Instant::now(),
+            kvs: Vec::new(),
+        };
+        attrs.record(&mut span);
+        span
+    }
+}
+
+impl Visit for Data {
+    fn record_debug(&mut self, field: &Field, value: &dyn fmt::Debug) {
+        self.kvs.push((field.name(), format!("{:?}", value)))
+    }
+}
+#[derive(Debug)]
+pub struct HierarchicalLayer<W = fn() -> io::Stderr>
+where
+    W: for<'writer> MakeWriter<'writer> + 'static,
+{
+    make_writer: W,
+    bufs: Mutex<Buffers>,
+    config: Config,
+}
+
+impl Default for HierarchicalLayer {
+    fn default() -> Self {
+        Self::new(2)
+    }
+}
+
+impl HierarchicalLayer<fn() -> io::Stderr> {
+    pub fn new(indent_amount: usize) -> Self {
+        let ansi = atty::is(atty::Stream::Stderr);
+        let config = Config {
+            ansi,
+            indent_amount,
+            ..Default::default()
+        };
+        Self {
+            make_writer: io::stderr,
+            bufs: Mutex::new(Buffers::new()),
+            config,
+        }
+    }
+}
+
+impl<W> HierarchicalLayer<W>
+where
+    W: for<'writer> MakeWriter<'writer> + 'static,
+{
+    /// Enables terminal colors, boldness and italics.
+    pub fn with_ansi(self, ansi: bool) -> Self {
+        Self {
+            config: self.config.with_ansi(ansi),
+            ..self
+        }
+    }
+
+    pub fn with_writer<W2>(self, make_writer: W2) -> HierarchicalLayer<W2>
+    where
+        W2: for<'writer> MakeWriter<'writer>,
+    {
+        HierarchicalLayer {
+            make_writer,
+            config: self.config,
+            bufs: self.bufs,
+        }
+    }
+
+    pub fn with_indent_amount(self, indent_amount: usize) -> Self {
+        let config = Config {
+            indent_amount,
+            ..self.config
+        };
+        Self { config, ..self }
+    }
+
+    /// Renders an ascii art tree instead of just using whitespace indentation.
+    pub fn with_indent_lines(self, indent_lines: bool) -> Self {
+        Self {
+            config: self.config.with_indent_lines(indent_lines),
+            ..self
+        }
+    }
+
+    /// Whether to render the event and span targets. Usually targets are the module path to the
+    /// event/span macro invocation.
+    pub fn with_targets(self, targets: bool) -> Self {
+        Self {
+            config: self.config.with_targets(targets),
+            ..self
+        }
+    }
+
+    /// Whether to render the thread id in the beginning of every line. This is helpful to
+    /// untangle the tracing statements emitted by each thread.
+    pub fn with_thread_ids(self, thread_ids: bool) -> Self {
+        Self {
+            config: self.config.with_thread_ids(thread_ids),
+            ..self
+        }
+    }
+
+    /// Whether to render the thread name in the beginning of every line. Not all threads have
+    /// names, but if they do, this may be more helpful than the generic thread ids.
+    pub fn with_thread_names(self, thread_names: bool) -> Self {
+        Self {
+            config: self.config.with_thread_names(thread_names),
+            ..self
+        }
+    }
+
+    /// Resets the indentation to zero after `wraparound` indentation levels.
+    /// This is helpful if you expect very deeply nested spans as otherwise the indentation
+    /// just runs out of your screen.
+    pub fn with_wraparound(self, wraparound: usize) -> Self {
+        Self {
+            config: self.config.with_wraparound(wraparound),
+            ..self
+        }
+    }
+
+    /// Whether to print the currently active span's message again before entering a new span.
+    /// This helps if the entry to the current span was quite a while back (and with scrolling
+    /// upwards in logs).
+    pub fn with_verbose_entry(self, verbose_entry: bool) -> Self {
+        Self {
+            config: self.config.with_verbose_entry(verbose_entry),
+            ..self
+        }
+    }
+
+    /// Whether to print the currently active span's message again before dropping it.
+    /// This helps if the entry to the current span was quite a while back (and with scrolling
+    /// upwards in logs).
+    pub fn with_verbose_exit(self, verbose_exit: bool) -> Self {
+        Self {
+            config: self.config.with_verbose_exit(verbose_exit),
+            ..self
+        }
+    }
+
+    /// Whether to print `{}` around the fields when printing a span.
+    /// This can help visually distinguish fields from the rest of the message.
+    pub fn with_bracketed_fields(self, bracketed_fields: bool) -> Self {
+        Self {
+            config: self.config.with_bracketed_fields(bracketed_fields),
+            ..self
+        }
+    }
+
+    fn styled(&self, style: Style, text: impl AsRef<str>) -> String {
+        if self.config.ansi {
+            style.paint(text.as_ref()).to_string()
+        } else {
+            text.as_ref().to_string()
+        }
+    }
+
+    fn print_kvs<'a, I, V>(&self, buf: &mut impl fmt::Write, kvs: I) -> fmt::Result
+    where
+        I: IntoIterator<Item = (&'a str, V)>,
+        V: fmt::Display + 'a,
+    {
+        let mut kvs = kvs.into_iter();
+        if let Some((k, v)) = kvs.next() {
+            if k == "message" {
+                write!(buf, "{}", v)?;
+            } else {
+                write!(buf, "{}={}", k, v)?;
+            }
+        }
+        for (k, v) in kvs {
+            write!(buf, ", {}={}", k, v)?;
+        }
+        Ok(())
+    }
+
+    fn write_span_info<S>(&self, id: &Id, ctx: &Context<S>, style: SpanMode)
+    where
+        S: Subscriber + for<'span> LookupSpan<'span>,
+    {
+        let span = ctx
+            .span(id)
+            .expect("in on_enter/on_exit but span does not exist");
+        let ext = span.extensions();
+        let data = ext.get::<Data>().expect("span does not have data");
+
+        let mut guard = self.bufs.lock().unwrap();
+        let bufs = &mut *guard;
+        let mut current_buf = &mut bufs.current_buf;
+
+        let indent = ctx
+            .lookup_current()
+            .as_ref()
+            .map(registry::SpanRef::scope)
+            .map(registry::Scope::from_root)
+            .into_iter()
+            .flatten()
+            .count();
+
+        if self.config.verbose_entry || matches!(style, SpanMode::Open { .. } | SpanMode::Event) {
+            if self.config.targets {
+                let target = span.metadata().target();
+                write!(
+                    &mut current_buf,
+                    "{}::",
+                    self.styled(Style::new().dimmed(), target,),
+                )
+                .expect("Unable to write to buffer");
+            }
+
+            write!(
+                current_buf,
+                "{name}",
+                name = self.styled(Style::new().fg(Color::Green).bold(), span.metadata().name())
+            )
+            .unwrap();
+            if self.config.bracketed_fields {
+                write!(
+                    current_buf,
+                    "{}",
+                    self.styled(Style::new().fg(Color::Green).bold(), "{") // Style::new().fg(Color::Green).dimmed().paint("{")
+                )
+                .unwrap();
+            } else {
+                write!(current_buf, " ").unwrap();
+            }
+            self.print_kvs(&mut current_buf, data.kvs.iter().map(|(k, v)| (*k, v)))
+                .unwrap();
+            if self.config.bracketed_fields {
+                write!(
+                    current_buf,
+                    "{}",
+                    self.styled(Style::new().fg(Color::Green).bold(), "}") // Style::new().dimmed().paint("}")
+                )
+                .unwrap();
+            }
+        }
+
+        bufs.indent_current(indent, &self.config, style);
+        let writer = self.make_writer.make_writer();
+        bufs.flush_current_buf(writer)
+    }
+}
+
+impl<S, W> Layer<S> for HierarchicalLayer<W>
+where
+    S: Subscriber + for<'span> LookupSpan<'span>,
+    W: for<'writer> MakeWriter<'writer> + 'static,
+{
+    fn on_new_span(&self, attrs: &Attributes, id: &Id, ctx: Context<S>) {
+        let span = ctx.span(id).expect("in new_span but span does not exist");
+        if span.extensions().get::<Data>().is_none() {
+            let data = Data::new(attrs);
+            span.extensions_mut().insert(data);
+        }
+
+        if self.config.verbose_exit {
+            if let Some(span) = span.parent() {
+                self.write_span_info(&span.id(), &ctx, SpanMode::PreOpen);
+            }
+        }
+
+        self.write_span_info(
+            id,
+            &ctx,
+            SpanMode::Open {
+                verbose: self.config.verbose_entry,
+            },
+        );
+    }
+
+    fn on_event(&self, event: &Event<'_>, ctx: Context<S>) {
+        let mut guard = self.bufs.lock().unwrap();
+        let bufs = &mut *guard;
+        let mut event_buf = &mut bufs.current_buf;
+
+        // printing the indentation
+        let indent = if ctx.current_span().id().is_some() {
+            // size hint isn't implemented on Scope.
+            ctx.event_scope(event)
+                .expect("Unable to get span scope; this is a bug")
+                .count()
+        } else {
+            0
+        };
+
+        // check if this event occurred in the context of a span.
+        // if it has, get the start time of this span.
+        let start = match ctx.current_span().id() {
+            Some(id) => match ctx.span(id) {
+                // if the event is in a span, get the span's starting point.
+                Some(ctx) => {
+                    let ext = ctx.extensions();
+                    let data = ext
+                        .get::<Data>()
+                        .expect("Data cannot be found in extensions");
+                    Some(data.start)
+                }
+                None => None,
+            },
+            None => None,
+        };
+        if let Some(start) = start {
+            let elapsed = start.elapsed();
+            write!(
+                &mut event_buf,
+                "{timestamp}{unit} ",
+                timestamp = self.styled(Style::new().dimmed(), elapsed.as_millis().to_string()),
+                unit = self.styled(Style::new().dimmed(), "ms"),
+            )
+            .expect("Unable to write to buffer");
+        }
+
+        #[cfg(feature = "tracing-log")]
+        let normalized_meta = event.normalized_metadata();
+        #[cfg(feature = "tracing-log")]
+        let metadata = normalized_meta.as_ref().unwrap_or_else(|| event.metadata());
+        #[cfg(not(feature = "tracing-log"))]
+        let metadata = event.metadata();
+
+        let level = metadata.level();
+        let level = if self.config.ansi {
+            ColorLevel(level).to_string()
+        } else {
+            level.to_string()
+        };
+        write!(&mut event_buf, "{level}", level = level).expect("Unable to write to buffer");
+
+        if self.config.targets {
+            let target = metadata.target();
+            write!(
+                &mut event_buf,
+                " {}",
+                self.styled(Style::new().dimmed(), target,),
+            )
+            .expect("Unable to write to buffer");
+        }
+
+        let mut visitor = FmtEvent { comma: false, bufs };
+        event.record(&mut visitor);
+        visitor
+            .bufs
+            .indent_current(indent, &self.config, SpanMode::Event);
+        let writer = self.make_writer.make_writer();
+        bufs.flush_current_buf(writer)
+    }
+
+    fn on_close(&self, id: Id, ctx: Context<S>) {
+        self.write_span_info(
+            &id,
+            &ctx,
+            SpanMode::Close {
+                verbose: self.config.verbose_exit,
+            },
+        );
+
+        if self.config.verbose_exit {
+            if let Some(span) = ctx.span(&id).and_then(|span| span.parent()) {
+                self.write_span_info(&span.id(), &ctx, SpanMode::PostClose);
+            }
+        }
+    }
+}
diff --git a/vendor/tracing-tree/tests/ui.rs b/vendor/tracing-tree/tests/ui.rs
new file mode 100644
index 000000000..68c54e66e
--- /dev/null
+++ b/vendor/tracing-tree/tests/ui.rs
@@ -0,0 +1,79 @@
+use assert_cmd::prelude::*;
+
+use std::process::Command;
+
+// Timings are flaky, so tests would spuriously fail.
+// Thus we replace all `/([0-9]+)ms/` with underscores
+fn replace_ms(data: &[u8]) -> Vec<u8> {
+    let mut skip = false;
+    let mut seen_s = false;
+    let mut v: Vec<u8> = data
+        .iter()
+        .rev()
+        .filter_map(|&b| match (b, skip, seen_s) {
+            (b'0'..=b'9', true, _) => None,
+            (_, true, _) => {
+                skip = false;
+                Some(b)
+            }
+            (b's', _, _) => {
+                seen_s = true;
+                Some(b)
+            }
+            (b'm', _, true) => {
+                seen_s = false;
+                skip = true;
+                Some(b)
+            }
+            _ => Some(b),
+        })
+        .collect();
+    v.reverse();
+    v
+}
+
+fn main() {
+    for entry in glob::glob("examples/*.rs").expect("Failed to read glob pattern") {
+        let entry = entry.unwrap();
+        let mut cmd = Command::cargo_bin(entry.with_extension("").to_str().unwrap()).unwrap();
+        let output = cmd.unwrap();
+        let stderr = entry.with_extension("stderr");
+        let stdout = entry.with_extension("stdout");
+
+        if std::env::args().any(|arg| arg == "--bless") {
+            if output.stderr.is_empty() {
+                let _ = std::fs::remove_file(stderr);
+            } else {
+                std::fs::write(stderr, replace_ms(&output.stderr)).unwrap();
+            }
+            if output.stdout.is_empty() {
+                let _ = std::fs::remove_file(stdout);
+            } else {
+                std::fs::write(stdout, replace_ms(&output.stdout)).unwrap();
+            }
+        } else {
+            if output.stderr.is_empty() {
+                assert!(
+                    !stderr.exists(),
+                    "{} exists but there was no stderr output",
+                    stderr.display()
+                );
+            } else {
+                assert!(
+                    std::fs::read(&stderr).unwrap() == replace_ms(&output.stderr),
+                    "{} is not the expected output, rerun the test with `cargo test -- -- --bless`",
+                    stderr.display()
+                );
+            }
+            if output.stdout.is_empty() {
+                assert!(!stdout.exists());
+            } else {
+                assert!(
+                    std::fs::read(&stdout).unwrap() == replace_ms(&output.stdout),
+                    "{} is not the expected output, rerun the test with `cargo test -- -- --bless`",
+                    stdout.display()
+                );
+            }
+        }
+    }
+}