Ergonomic, hermetic, user-friendly software build system for Python, Go, Java, Kotlin, Protobuf, Scala, Shell. Pants lets you fearlessly scale up your codebase!

Pants

We just won’t know which change fixed it…

hm, i was able to get it building with just that change on that sha. if there is something you'd like me to try, let me know.

Basically I’m trying to establish which commit fixed this: <https://github.com/pantsbuild/pants/issues/4664>

Is there anything I need to nuke other than ` ~/.cache/pants/rust/` ?

<@U051221NF>: yes, see what Daniel mentioned earlier... everything matching `~/.cache/pants/rust*`, essentially... on latest master it's all under a single `rust` directory, but it used to be flattened in a toplevel dir

Yep, but I only have `rust` there currently

<https://pantsbuild.slack.com/archives/C0D7TNJHL/p1515143272000248>

I started fresh in a newly cloned repo, with that patch, and that seems to work now

OK, so that worked for that specific commit, but if I go back in time to May, when I discovered the issue, that patch no longer applies.

i think that in may we might not have been pinning the rust toolchain, so you might experience a different set of issues.

But I did ascertain that it wasn’t 3e5f680c76b0c87272049d0af78d5777a8889f2f that fixed the issue

Yeah, this isn’t worth the time it’s taking

since the issue is not reproducible, I’ll leave it closed

<@U051221NF> I just went through the same kind of bisecting process, and it was *so* painful :disappointed: Sorry for the hassle

<@U06A03HV1> Would love a hand on <https://github.com/pantsbuild/pants/pull/5293> to somehow pass ownership of bytes into the stream, while lazily chunking it…

<@U6YPB4SJX>: i think it should be possible to generate a stream of chunks using <http://alexcrichton.com/futures-rs/futures/stream/fn.unfold.html>

probably you're going to want to use `Bytes`, which is the reference counted buffer type used elsewhere in tokio

because i think even with unfold, you're not going to be able to give out references into the unfolded buffer... ie, would need to copy

maybe then it's only N+1 copies (total + 1 buffer), but

<https://carllerche.github.io/bytes/bytes/>

Bytes has a `chunks` method as well, but it gives you owned values