Blazingly Fast: The Rust Meme Explained

“Blazingly fast” is a running joke about Rust projects. So many tools written in Rust describe themselves as blazingly fast, often in a README full of rocket and crab emojis, that the phrase became a meme. Saying something is “blazingly fast” now means: it was rewritten in Rust, and you will hear about it.

Where “blazingly fast” comes from

The phrase has an official source. In late 2014 the Rust homepage described the language like this, according to a Wayback Machine capture from 2 December 2014:

“Rust is a systems programming language that runs blazingly fast, prevents almost all crashes, and eliminates data races.”

By mid-2016 the tagline read “runs blazingly fast, prevents segfaults, and guarantees thread safety”. The redesigned site still uses the phrase today: rust-lang.org says “Rust is blazingly fast and memory-efficient” (checked 30 October 2026).

So the language introduced itself with those words, and many projects copied them. When exactly it turned into a joke is not documented. By August 2020 it was already a familiar complaint: in a Hacker News thread about the Alacritty terminal, someone asked “Why does every rust project claim to be ‘blazing fast’?”. We found no earlier, dated source for the meme itself, so we will not invent one.

How the meme looks

The typical parody is a README that stacks every Rust buzzword in one line:

# hello-rs

Blazingly fast 🚀, memory-safe 🦀, zero-cost hello world.
Rewritten in Rust.

The Rust community jokes about it too. The cve-rs project describes itself as “Blazingly 🔥 fast 🚀 memory vulnerabilities, written in 100% safe Rust. 🦀”. It is a joke crate that produces buffer overflows and segfaults while denying unsafe code in the whole codebase, and its tagline mocks the phrase on purpose.

Related phrases travel with it: “rewrite it in Rust” (often shortened to RIIR), “fearless concurrency” and “zero-cost abstractions”. Together they form the standard Rust pitch, and the standard Rust joke.

Is Rust actually fast?

Yes, which is why the joke works. Rust compiles to native machine code through LLVM. It has no garbage collector, so there are no collection pauses. Its abstractions, like iterators, are designed to compile down to the same code you would write by hand. In most benchmarks it lands in the same range as C and C++.

The meme is not about Rust being slow. It is about the claim coming before the measurement. “Blazingly fast” says nothing about what was measured, against what, or on which input. A fair benchmark answers those questions. With hyperfine, a command-line benchmarking tool (also written in Rust), a comparison looks like this:

hyperfine 'grep -r TODO .' 'rg TODO'

Even this is not a fair fight: by default rg skips files listed in .gitignore and hidden files, while grep -r reads everything. A faster tool that does less work is not the same as a faster algorithm. Details like that are why engineers roll their eyes at the slogan.

The other classic mistake runs the other way. A Rust program built in debug mode is much slower than the same program built with optimisations. Benchmark the release build:

cargo build --release
./target/release/my-tool

Why developers find it funny

It is a joke about marketing in a culture that distrusts marketing. Developers like numbers. “Blazingly fast” is an adjective doing the work of a benchmark.

It is also affectionate. Most people who use the meme like Rust. They laugh at the enthusiasm, not the language. The same way PHP developers laugh at “PHP is dead” posts, Rust developers laugh at their own README clichés. See our page on the PHP is dead meme for the other side of that coin.

And there is a quiet irony: Rust is famous for fast programs and slow compile times. The binary is blazingly fast. The build, on a big project, is time for a coffee.

The shirt

Our Blazingly Fast shirt prints the phrase in monospace, with a terminal cursor. It is the unofficial uniform of the rewrite-it-in-Rust crowd. Find it in our developer t-shirts.

Unisex fit, S to 5XL, printed on demand. Check the size guide, or browse the Christmas gift guide for programmers.

FAQ

What does “blazingly fast” mean?

Literally, very fast. In developer culture it is a joke about Rust projects that use the phrase in every README.

Did Rust really call itself blazingly fast?

Yes. The Rust homepage used “runs blazingly fast” in its tagline from at least December 2014, and the current site still says “Rust is blazingly fast and memory-efficient”.

Who started the blazingly fast meme?

Nobody documented it. The phrase comes from Rust’s own marketing; the joke grew out of how often projects repeated it.