tokio-rs/tokio

12.5

Adjusted Score

12.5

Raw Score

100%

Time Factor

2026-07-14

Last Push

32.5K

Stars

Rust

Language

188.5K

Lines of Code

849

Files

2.7K

Pattern Hits

2026-07-14

Scan Date

0.00

HC Hit Rate

What These Metrics Mean

Adjusted Score: Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score: The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor: The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits: Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate: High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files: Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 2HIGH 1MEDIUM 35LOW 2674

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 2712 distinct pattern matches across 8 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block2643 hits · 2158 pts

Severity	File	Line	Snippet	Context
LOW	tokio-stream/src/pending.rs	21	/// immediately empty but returns no values.	COMMENT
LOW	tokio-stream/src/empty.rs	21	///	COMMENT
LOW	tokio-stream/src/lib.rs	21	//! an asynchronous version of the standard library's `Iterator` trait.	COMMENT
LOW	tokio-stream/src/lib.rs	41	//! while let Some(value) = stream.next().await {	COMMENT
LOW	tokio-stream/src/lib.rs	61	//! The opposite conversion from an [`AsyncRead`] into a `Stream` is also	COMMENT
LOW	tokio-stream/src/iter.rs	21	/// simply always calls `iter.next()` and returns that.	COMMENT
LOW	tokio-stream/src/stream_close.rs	1	use crate::Stream;	COMMENT
LOW	tokio-stream/src/stream_close.rs	21	/// # async fn main() {	COMMENT
LOW	tokio-stream/src/stream_ext.rs	81	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	101	/// ```	COMMENT
LOW	tokio-stream/src/stream_ext.rs	121	/// crate.	COMMENT
LOW	tokio-stream/src/stream_ext.rs	141	/// assert_eq!(stream.next().await, None);	COMMENT
LOW	tokio-stream/src/stream_ext.rs	161	/// but returns a [`Result<Option<T>, E>`](Result) rather than	COMMENT
LOW	tokio-stream/src/stream_ext.rs	181	/// assert_eq!(stream.try_next().await, Ok(Some(1)));	COMMENT
LOW	tokio-stream/src/stream_ext.rs	201	/// wrapped version of it, similar to the existing `map` methods in the	COMMENT
LOW	tokio-stream/src/stream_ext.rs	221	F: FnMut(Self::Item) -> T,	COMMENT
LOW	tokio-stream/src/stream_ext.rs	241	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	261	fn map_while<T, F>(self, f: F) -> MapWhile<Self, F>	COMMENT
LOW	tokio-stream/src/stream_ext.rs	281	/// returned by this method. To handle this, you can use `tokio::pin!` as in	COMMENT
LOW	tokio-stream/src/stream_ext.rs	301	/// assert_eq!(stream.next().await, Some(5));	COMMENT
LOW	tokio-stream/src/stream_ext.rs	321	/// will break the fairness of the merging.	COMMENT
LOW	tokio-stream/src/stream_ext.rs	341	/// # /*	COMMENT
LOW	tokio-stream/src/stream_ext.rs	361	/// }) as Pin<Box<dyn Stream<Item = usize> + Send>>;	COMMENT
LOW	tokio-stream/src/stream_ext.rs	381	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	401	Self: Sized,	COMMENT
LOW	tokio-stream/src/stream_ext.rs	421	/// ```	COMMENT
LOW	tokio-stream/src/stream_ext.rs	441	Filter::new(self, f)	COMMENT
LOW	tokio-stream/src/stream_ext.rs	461	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	481		COMMENT
LOW	tokio-stream/src/stream_ext.rs	501	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	521	/// # #[tokio::main(flavor = "current_thread")]	COMMENT
LOW	tokio-stream/src/stream_ext.rs	541	/// }	COMMENT
LOW	tokio-stream/src/stream_ext.rs	561	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	581	/// stream until the predicate `f` resolves to `false`. Once one element	COMMENT
LOW	tokio-stream/src/stream_ext.rs	601	F: FnMut(&Self::Item) -> bool,	COMMENT
LOW	tokio-stream/src/stream_ext.rs	621	/// assert_eq!(Some(10), stream.next().await);	COMMENT
LOW	tokio-stream/src/stream_ext.rs	641	/// # Examples	COMMENT
LOW	tokio-stream/src/stream_ext.rs	661	}	COMMENT
LOW	tokio-stream/src/stream_ext.rs	681	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	701	/// ```	COMMENT
LOW	tokio-stream/src/stream_ext.rs	721	AllFuture::new(self, f)	COMMENT
LOW	tokio-stream/src/stream_ext.rs	741	/// An empty stream returns `false`.	COMMENT
LOW	tokio-stream/src/stream_ext.rs	761	/// # #[tokio::main(flavor = "current_thread")]	COMMENT
LOW	tokio-stream/src/stream_ext.rs	781	}	COMMENT
LOW	tokio-stream/src/stream_ext.rs	801	/// assert_eq!(stream.next().await, Some(1));	COMMENT
LOW	tokio-stream/src/stream_ext.rs	821	/// Equivalent to:	COMMENT
LOW	tokio-stream/src/stream_ext.rs	841	where	COMMENT
LOW	tokio-stream/src/stream_ext.rs	861	///	COMMENT
LOW	tokio-stream/src/stream_ext.rs	881	/// # #[tokio::main(flavor = "current_thread")]	COMMENT
LOW	tokio-stream/src/stream_ext.rs	901	/// let values: Result<Vec<i32>, &str> =	COMMENT
LOW	tokio-stream/src/stream_ext.rs	921	T: FromStream<Self::Item>,	COMMENT
LOW	tokio-stream/src/stream_ext.rs	941	/// This function consumes the stream passed into it and returns a	COMMENT
LOW	tokio-stream/src/stream_ext.rs	961	/// // When no items time out, we get the 3 elements in succession:	COMMENT
LOW	tokio-stream/src/stream_ext.rs	981	/// assert_eq!(int_stream.try_next().await, Ok(None));	COMMENT
LOW	tokio-stream/src/stream_ext.rs	1001	/// # }	COMMENT
LOW	tokio-stream/src/stream_ext.rs	1021	/// becomes available before the deadline is reached, additional errors are	COMMENT
LOW	tokio-stream/src/stream_ext.rs	1041	/// use std::time::Duration;	COMMENT
LOW	tokio-stream/src/stream_ext.rs	1061	/// // If we want to stop consuming the source stream the first time an	COMMENT
LOW	tokio-stream/src/stream_ext.rs	1081	/// tokio::pin!(timeout_stream);	COMMENT
LOW	tokio-stream/src/stream_ext.rs	1101	///	COMMENT
2583 more matches not shown…

Decorative Section Separators23 hits · 87 pts

Severity	File	Line	Snippet	Context
MEDIUM	tokio-stream/tests/stream_fused.rs	9	// ── map ──────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	25	// ── filter ───────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	41	// ── filter_map ───────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	57	// ── skip ─────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	73	// ── skip_while ───────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	89	// ── take ─────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	114	// ── take_while ───────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	132	// ── map_while ─────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	152	// ── then ─────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	171	// ── chain ────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	tokio-stream/tests/stream_fused.rs	189	// ── merge ────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	144	// ┌────────────────────────────────────────────────────────┐	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	147	// ┌─────┐ │ `decode_eof` returns After returning │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	148	// Read 0 bytes ├─────▼──┴┐ `Ok(None)` ┌────────┐ ◄───┐ `None` ┌───▼─────┐	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	149	// ┌────────────────►│ Pausing ├───────────────────────►│ Paused ├─┐ └───────────┤ Errored │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	150	// │ └─────────┘ └─┬──▲───┘ │ └───▲───▲─┘	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	152	// ┌──────┐ │ `decode` returns `Some` │ └─────┘ │ │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	153	// │ │ │ ┌──────┐ │ Pending │ │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	154	// │ ┌────▼──┴─┐ Read n>0 bytes ┌┴──────▼─┐ read n>0 bytes │ read │ │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	155	// └─┤ Reading ├───────────────►│ Framing │◄────────────────────────┘ │ │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	156	// └──┬─▲────┘ └─────┬──┬┘ │ │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	158	// │ └───decode` returns `None`──┘ └───────────────────────────────────────────────────────┘ │	COMMENT
MEDIUM⚡	tokio-util/src/codec/framed_impl.rs	160	// └────────────────────────────────────────────────────────────────────────────────────────────┘	COMMENT

Redundant / Tautological Comments28 hits · 42 pts

Severity	File	Line	Snippet	Context
LOW	tokio/src/net/udp.rs	511	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	587	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	736	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	807	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	1203	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	1341	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	1601	/// # Return value	COMMENT
LOW	tokio/src/net/udp.rs	1746	/// # Return value	COMMENT
LOW	tokio/src/net/unix/stream.rs	282	/// # Return value	COMMENT
LOW	tokio/src/net/unix/stream.rs	598	/// # Return value	COMMENT
LOW	tokio/src/net/unix/pipe.rs	585	/// # Return value	COMMENT
LOW	tokio/src/net/unix/pipe.rs	1137	/// # Return value	COMMENT
LOW	tokio/src/net/unix/datagram/socket.rs	260	/// # Return value	COMMENT
LOW	tokio/src/net/unix/datagram/socket.rs	356	/// # Return value	COMMENT
LOW	tokio/src/net/unix/datagram/socket.rs	1168	/// # Return value	COMMENT
LOW	tokio/src/net/unix/datagram/socket.rs	1208	/// # Return value	COMMENT
LOW	tokio/src/net/unix/datagram/socket.rs	1243	/// # Return value	COMMENT
LOW	tokio/src/net/unix/datagram/socket.rs	1272	/// # Return value	COMMENT
LOW	tokio/src/net/tcp/stream.rs	335	/// # Return value	COMMENT
LOW	tokio/src/net/tcp/stream.rs	543	/// # Return value	COMMENT
LOW	tokio/src/net/tcp/stream.rs	855	/// # Return value	COMMENT
LOW	tokio/src/net/windows/named_pipe.rs	375	/// # Return value	COMMENT
LOW	tokio/src/net/windows/named_pipe.rs	682	/// # Return value	COMMENT
LOW	tokio/src/net/windows/named_pipe.rs	1169	/// # Return value	COMMENT
LOW	tokio/src/net/windows/named_pipe.rs	1473	/// # Return value	COMMENT
LOW	tokio/src/io/async_write.rs	95	/// # Return value	COMMENT
LOW	tokio/src/io/util/copy_bidirectional.rs	71	/// # Return value	COMMENT
LOW	tokio/src/sync/oneshot.rs	793	/// # Return value	COMMENT

AI Slop Vocabulary11 hits · 33 pts

Severity	File	Line	Snippet	Context
MEDIUM	tokio-util/src/io/sync_bridge.rs	16	/// might not fully leverage the async capabilities of the system.	COMMENT
MEDIUM	tokio-util/src/io/sync_bridge.rs	121	/// blocking and inefficient code. Instead, you can utilize an async compression library	COMMENT
MEDIUM	tokio/src/runtime/time_alt/entry.rs	81	/// An ZST to allow [`super::registration_queue`] to utilize the [`Entry::extra_pointers`]	COMMENT
MEDIUM	tokio/src/runtime/time_alt/entry.rs	112	/// An ZST to allow [`super::cancellation_queue`] to utilize the [`Entry::cancel_pointers`]	COMMENT
MEDIUM	tokio/src/runtime/time_alt/entry.rs	143	/// An ZST to allow [`super::WakeQueue`] to utilize the [`Entry::extra_pointers`]	COMMENT
MEDIUM	tokio/src/runtime/task/trace/tree.rs	14	/// There should only be one root, but the code is robust to multiple roots.	COMMENT
MEDIUM	tokio/src/sync/semaphore.rs	200	/// work, but it doesn't matter which test runs first. We can leverage a	COMMENT
MEDIUM	tokio/src/sync/mod.rs	129	//! given time. Properly setting this value is key in implementing robust	COMMENT
MEDIUM	tokio/src/process/mod.rs	662	/// a [`Child`] handle where possible, and instead utilize `child.wait().await`	COMMENT
MEDIUM	examples/print_each_packet.rs	89	// Essentially here we're executing a new task to run concurrently,	COMMENT
MEDIUM	examples/echo-tcp.rs	57	// Essentially here we're executing a new task to run concurrently,	COMMENT

Hallucination Indicators2 hits · 20 pts

Severity	File	Line	Snippet	Context
CRITICAL	tokio/src/runtime/scheduler/multi_thread/worker.rs	645	let task = self.worker.handle.shared.owned.assert_owner(task);	CODE
CRITICAL	tokio/src/runtime/scheduler/multi_thread/worker.rs	764	let task = self.worker.handle.shared.owned.assert_owner(task);	CODE

Synthetic Comment Markers1 hit · 8 pts

Severity	File	Line	Snippet	Context
HIGH	tokio/src/runtime/metrics/histogram/h2_histogram.rs	251	// this by one to ensure we are at least as granular as requested.	COMMENT

Slop Phrases2 hits · 4 pts

Severity	File	Line	Snippet	Context
MEDIUM	tokio-util/src/codec/length_delimited.rs	366	//! Here is a simple example, given a `FramedWrite` with the following	COMMENT
LOW	examples/udp-client.rs	24	//! Don't forget to pass `EOF` to the standard input of the client!	COMMENT

Example Usage Blocks2 hits · 3 pts

Severity	File	Line	Snippet	Context
LOW	tokio/src/runtime/dump.rs	237	/// Example usage:	COMMENT
LOW	tokio/src/macros/cfg.rs	8	/// ## Example usage:	COMMENT

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings