Bumping mathlib to b2bf051 would break the build #268

mathlib incompatibility detected

An incompatibility has been detected between this project and recent changes in mathlib.
In other words, this project can't advance to the tip of mathlib without breaking.

First incompatible mathlib commit: b2bf051 — chore(MeasureTheory): generalize hypotheses to NullMeasurableSet (#42924) (2026-09-25 (D-Thomine)).

Last-known-good mathlib commit: f35c415 — feat(cache): retire the legacy container (#44174) (2026-09-25 (Marcelo Lynch))

Verified when LeanMachineLearning/LML was at: 44ac9f3 — Bump mathlib dependency to v4.35.0-rc3 (#262) (2026-10-03 (Rémy Degenne)).
You can reproduce this break by:

• updating mathlib to b2bf051988bf69448bce88722cc09a05fea31662
• running lake update mathlib
• running lake build

downstream-reports reported at 2026-10-04T18:25:32Z · Workflow run · Job log · Failure log

This issue was last updated on 2026-10-04 by this workflow run. It is maintained automatically by downstream-reports/track-incompatibility. When the incompatibility is resolved, the issue is closed automatically with a comment.