diff --git a/Cargo.lock b/Cargo.lock
index 9870528a07c..6a140a5e033 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -365,7 +365,7 @@ dependencies = [
  "regex",
  "serde",
  "serde_cbor",
- "serde_derive",
+ "serde_derive 1.0.125 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json",
  "tinytemplate",
  "walkdir",
@@ -1737,9 +1737,9 @@ checksum = "b18befed8bc2b61abc79a457295e7e838417326da1586050b919414073977f19"
 
 [[package]]
 name = "postcard"
-version = "0.7.0"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9083a4e478606d952014ad10e2fad31c43030942cec1f2bf8f12d4cc7089e62d"
+checksum = "c8863e251332eb18520388099b8b0acc4810ed6e602e3b6f674e8a46ba20e15c"
 dependencies = [
  "heapless",
  "postcard-cobs",
@@ -2108,10 +2108,8 @@ dependencies = [
 [[package]]
 name = "serde"
 version = "1.0.125"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "558dc50e1a5a5fa7112ca2ce4effcb321b0300c0d4ccf0776a9f60cd89031171"
 dependencies = [
- "serde_derive",
+ "serde_derive 1.0.125",
 ]
 
 [[package]]
@@ -2144,6 +2142,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_derive"
+version = "1.0.125"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.125"
diff --git a/Cargo.toml b/Cargo.toml
index b81df2092ca..2b9165d2b5a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -56,3 +56,6 @@ lto = true
 [profile.bench]
 debug = true
 debug-assertions = false
+
+[patch.crates-io]
+serde = { path = "../Git/serde/serde" }
diff --git a/ffi/capi/Cargo.toml b/ffi/capi/Cargo.toml
index 2841f173ec0..68d44abba7a 100644
--- a/ffi/capi/Cargo.toml
+++ b/ffi/capi/Cargo.toml
@@ -37,7 +37,7 @@ skip_optional_dependencies = true
 denylist = ["bench", "wearos", "freertos", "x86tiny", "smaller_static", "malloc"]
 
 [lib]
-crate-type = ["staticlib", "rlib", "cdylib"]
+crate-type = ["staticlib"]
 path = "src/lib.rs"
 
 [features]
diff --git a/ffi/cpp/examples/fixeddecimal_wasm/Makefile b/ffi/cpp/examples/fixeddecimal_wasm/Makefile
index c41aa8e1a02..fee1305d0c7 100644
--- a/ffi/cpp/examples/fixeddecimal_wasm/Makefile
+++ b/ffi/cpp/examples/fixeddecimal_wasm/Makefile
@@ -15,11 +15,11 @@ $(ALL_HEADERS):
 
 
 
-../../../../target/wasm32-unknown-emscripten/debug/libicu_capi.a: $(ALL_RUST)
-	cargo +nightly build -p icu_capi --target wasm32-unknown-emscripten -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort
+../../../../target/wasm32-unknown-emscripten/release/libicu_capi.a: $(ALL_RUST)
+	RUSTFLAGS="-Cpanic=abort" cargo +nightly build --release -p icu_capi --target wasm32-unknown-emscripten -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort
 
 # Currently this doesn't run successfully, however it's the status quo of compiling ICU4X in C++ to WASM
-main.html: ../../../../target/wasm32-unknown-emscripten/debug/libicu_capi.a $(ALL_HEADERS) test.cpp
-	emcc -std=c++17 test.cpp ../../../../target/wasm32-unknown-emscripten/debug/libicu_capi.a -ldl -lpthread -lm -g  -o main.html --emrun -sWASM=1
+main.html: ../../../../target/wasm32-unknown-emscripten/release/libicu_capi.a $(ALL_HEADERS) test.cpp
+	emcc -std=c++17 test.cpp ../../../../target/wasm32-unknown-emscripten/release/libicu_capi.a -ldl -lpthread -lm -g  -o main.html --emrun -sWASM=1
 
 build: main.html
diff --git a/ffi/cpp/examples/fixeddecimal_wasm/test.cpp b/ffi/cpp/examples/fixeddecimal_wasm/test.cpp
index d6ea355bed9..2eba355913b 100644
--- a/ffi/cpp/examples/fixeddecimal_wasm/test.cpp
+++ b/ffi/cpp/examples/fixeddecimal_wasm/test.cpp
@@ -7,8 +7,8 @@
 #include <iostream>
 
 extern "C" void diplomat_init();
-extern "C" void trace_js(char* s) {
-    std::cout<<"TRACE: " <<s <<std::endl;
+extern "C" void log_js(char* s) {
+    std::cout<<"LOG: " <<s <<std::endl;
 }
 
 int main() {