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More details in this PR to bullet_stream heroku-buildpacks/bullet_stream#47. And this comment reporting the issue #110 (comment). The short version is: This buildpack uses a dependency that accidentally uses a feature stabilized in Rust 1.86, but it didn't correctly update the minimum required Rust version. If it had, when #115 was merged, it would have also triggered the change that's now being made (I'm guessing this field is not linted, but I've not verified). This change corrects the problem by correctly stating the minimum Rust version so all dependencies can compile correctly.
edmorley
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Jul 1, 2025
Co-authored-by: Ed Morley <501702+edmorley@users.noreply.github.com> Signed-off-by: Richard Schneeman <richard.schneeman+no-recruiters@gmail.com>
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## heroku/deb-packages ### Added - Support custom Debian repositories through configuration. ([#116](heroku/buildpacks-deb-packages#116)) ### Changed - Minimum supported Rust version incremented to 1.86 to support syntax introduced in [#115](heroku/buildpacks-deb-packages#115). ([#117](heroku/buildpacks-deb-packages#117))
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More details in this PR to bullet_stream heroku-buildpacks/bullet_stream#47. And this comment reporting the issue #110 (comment).
The short version is: This buildpack uses a dependency that accidentally uses a feature stabilized in Rust 1.86, but it didn't correctly update the minimum required Rust version. If it had, when #115 was merged, it would have also triggered the change that's now being made (I'm guessing this field is not linted, but I've not verified). This change corrects the problem by correctly stating the minimum Rust version so all dependencies can compile correctly.
GUS-W-18939940