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+# Maintenance Delivery :mailbox:
+
+**The [invoice form :pencil:](https://docs.google.com/forms/d/e/1FAIpQLSfmNYaoCgrxyhzgoKQ0ynQvnNRoTmgApz9NrMp-hd8mhIiO0A/viewform) has been filled out correctly for this delivery**  
+
+* **Application Document:** https://github.com/w3f/Grants-Program/blob/master/applications/maintenance/wasm-opt-for-rust.md
+* **Delivery Number:** 11
+* **Delivery Date:** 2023/11/02
+
+
+**Context**
+
+This is a project to maintain Rust bindings to Binaryen's wasm-opt tool.
+
+We fixed the big regression related to DWARF passes by adding an optional "dwarf" feature to the crate, and published 0.114.2.
+We upgraded to binaryen 116 and and published 0.116.0.
+
+
+**Deliverables**
+
+Note: a full hourly accounting of work performed is included with the invoice.
+
+| Number | Deliverable | Link | Notes |
+| ------------- | ------------- | ------------- |------------- |
+| 1. | Fixes for DWARF regression | https://github.com/brson/wasm-opt-rs/pull/156 | |
+| 2. | wasm-opt 0.114.2 | https://crates.io/crates/wasm-opt/0.114.2 | |
+| 3. | Upgrade to binaryen 116 | https://github.com/brson/wasm-opt-rs/pull/155 | |
+| 4. | wasm-opt 0.116.0 | https://crates.io/crates/wasm-opt/0.116.0 | |
+| 5. | Discussion of the DWARF regression | https://github.com/brson/wasm-opt-rs/issues/154#issuecomment-1769743989 | |
+| 6. | Update substrate to 0.116.0 | https://github.com/paritytech/polkadot-sdk/pull/1995 | |
+
+**Additional Information**
+
+N/A