Bumping mathlib to 8819c75 would break the build #240

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: 8819c75 — feat: withDensity of compositions of kernels and measures (#41192) (2026-08-25 (Rémy Degenne)).

Last-known-good mathlib commit: aac7f62 — feat(LinearAlgebra/Matrix): add elementary row operations (#38596) (2026-08-25 (Junye))

Verified when LeanMachineLearning/LML was at: c33199e — KL divergence between histories (#236) (2026-09-09 (Rémy Degenne)).
You can reproduce this break by:

• updating mathlib to 8819c75f772c612aa44445c09aca75b9ce667209
• running lake update mathlib
• running lake build

downstream-reports reported at 2026-09-10T12:00:53Z · Workflow run · Job log · Failure log

This issue was last updated on 2026-09-10 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.