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The new v0 mangling of Rust seems to have broken our stage 2 (see #520). We're still not sure about the details (see also #521), but disabling the new mangling scheme seems to fix things. So let's do that for now.

Alternative to #521.

Fixes #520.

@Freax13
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Freax13 commented Nov 27, 2025

Is the intention to merge and release this now to unblock users and then investigate this further later?

@phil-opp
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Yes, that's what I would propose. I don't think that they will remove the -Csymbol-mangling-version=legacy option anytime soon, so we can also wait a bit before spending more time on this now. Maybe this is even a bug in rustc and this is fixed by the time that the v0 mangling scheme reaches beta/stable.

@phil-opp phil-opp enabled auto-merge November 27, 2025 12:36
@phil-opp phil-opp merged commit 3fee79b into main Nov 27, 2025
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@phil-opp phil-opp deleted the fix-stage-2-build-take-2 branch November 27, 2025 12:43
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Build failure with nightly-2025-11-23

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