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Account age
3 yrs
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![Day 5, a picture worth a thousand words 👇
I put an API-breaking `#[doc(hidden)]` in my local build of the Rust standard library, and asked cargo-semver-checks to find it. See for yourself!
#rust #rustlang #semver](/img?u=https%3A%2F%2Fmedia.hachyderm.io%2Fmedia_attachments%2Ffiles%2F116%2F857%2F062%2F452%2F045%2F186%2Fsmall%2F91f17abf4b776d71.png)
7 views
Day 5, a picture worth a thousand words 👇
I put an API-breaking `#[doc(hidden)]` in my local build of the Rust standard library, and asked cargo-semver-checks to find it. See for yourself!
#rust #rustlang #semver
3 views
"If your rules aren't checkable with a tool, they are just entertainment. They aren't being followed."
- Gerard Holzmann #systemsdistributed
📊 Post engagement
6
Avg engagement / post
0.6%
Engagement vs followers
Nov 2022
On Mastodon since
🔥 Top post: Happy cargo-semver-checks release day 🎉 After 30+ PRs and 15kLoC · 26 likes + reposts
📊 Activity & format
Posting cadence
2.8 / week
Posts several times a week.
Content mix
Mostly text
Recent: 10 text · 2 image · 0 video.
Follower / following
2.5×
Follows 392 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
If you use the Trustfall query engine via Python, please upgrade to v0.3.2.
In v0.1.6 - 0.3.1, using the exposed APIs in a sufficiently contrived manner could trigger use-after-free. Your code *probably didn't do this*, but I yanked the af…
"If your rules aren't checkable with a tool, they are just entertainment. They aren't being followed."
- Gerard Holzmann #systemsdistributed
Still some cleanup to do before this can merge, but I'm exhausted. I'm 30 PRs and 15080 cumulative lines in on my week off from work 😅
I'm calling this a win, and going to lay down and read a book.
#rust #rustlang #semver
Day 5, a picture worth a thousand words 👇
I put an API-breaking `#[doc(hidden)]` in my local build of the Rust standard library, and asked cargo-semver-checks to find it. See for yourself!
#rust #rustlang #semver
Second, an improvement to how we normalize types.
We'll need this to implement type-checking lints in the future. This will eliminate a large class of expensive type-checks where the previous logic was unnecessarily conservative and quite …
It's Thursday, day 4. Today's haul so far is ~2500 LoC.
First, making use of default-value stability which we previously exposed in rustdoc JSON. Pairing with Codex on this caught a subtle new edge case that affects which traits are consid…
I had to take a brief detour to triage a surprising new class of SemVer breakage.
It's always *a time* when the net result is "8 issues across 5 repos" 😅
The net result is the same: even more lints!
https://github.com/obi1kenobi/cargo-semv…
It's Wednesday, day 3.
Default-stability is in rustdoc JSON in today's nightly Rust. Only *stable* defaults are public API, so we pretend unstable values don't exist.
I'm working on a PR for this, and also on type normalization improvement…
RE: https://hachyderm.io/@predrag/116840347170828291
Day 2 of trying to scan the Rust standard library for accidental breakage with cargo-semver-checks 👇
#rust #rustlang #semver
Second, the last required upstream PR got merged into rustdoc!
It lets us know which default values (like on associated consts, or default method impls in traits) are considered stable and therefore public API. This is the last "partial st…
It's Tuesday, and so far so good!
Two things happened today, by which I mean after midnight last night.
First, I merged a PR to allow unstable stdlib items to be considered non-public-API. Similarly, const-unstable items are considered non…
"If your rules aren't checkable with a tool, they are just entertainment. They aren't being followed."
- Gerard Holzmann #systemsdistributed
Still some cleanup to do before this can merge, but I'm exhausted. I'm 30 PRs and 15080 cumulative lines in on my week off from work 😅
I'm calling this a win, and going to lay down and read a book.
#rust #rustlang #semver
Day 5, a picture worth a thousand words 👇
I put an API-breaking `#[doc(hidden)]` in my local build of the Rust standard library, and asked cargo-semver-checks to find it. See for yourself!
#rust #rustlang #semver
Second, an improvement to how we normalize types.
We'll need this to implement type-checking lints in the future. This will eliminate a large class of expensive type-checks where the previous logic was unnecessarily conservative and quite …
It's Thursday, day 4. Today's haul so far is ~2500 LoC.
First, making use of default-value stability which we previously exposed in rustdoc JSON. Pairing with Codex on this caught a subtle new edge case that affects which traits are consid…
I had to take a brief detour to triage a surprising new class of SemVer breakage.
It's always *a time* when the net result is "8 issues across 5 repos" 😅
The net result is the same: even more lints!
https://github.com/obi1kenobi/cargo-semv…
It's Wednesday, day 3.
Default-stability is in rustdoc JSON in today's nightly Rust. Only *stable* defaults are public API, so we pretend unstable values don't exist.
I'm working on a PR for this, and also on type normalization improvement…
RE: https://hachyderm.io/@predrag/116840347170828291
Day 2 of trying to scan the Rust standard library for accidental breakage with cargo-semver-checks 👇
#rust #rustlang #semver
Second, the last required upstream PR got merged into rustdoc!
It lets us know which default values (like on associated consts, or default method impls in traits) are considered stable and therefore public API. This is the last "partial st…
It's Tuesday, and so far so good!
Two things happened today, by which I mean after midnight last night.
First, I merged a PR to allow unstable stdlib items to be considered non-public-API. Similarly, const-unstable items are considered non…
🐘 Community & instance
Home server
hachyderm.io
A tech & engineering server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 6 views per post.
📤Posts about 2.8× per week.
🛡️ Audience credibility
75/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~0.6% of followers engage each post) is around typical for Mastodon.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Author of cargo-semver-checks & Trustfall // https://github.com/obi1kenobi // https://predr.ag/blog // ex Principal Eng @Kensho // MIT alum // not from around here // he-him
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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