wasmtime: fix broken build

Author: xingyaner

projects/wasmtime/Dockerfile

@@ -38,6 +38,7 @@ WORKDIR wasmtime
 
 # The default toolchain used by OSS-Fuzz is too old to build Wasmtime at this
 # time.
-ENV RUSTUP_TOOLCHAIN nightly-2025-07-16
+ENV RUSTUP_TOOLCHAIN=nightly-2025-07-16
+RUN rustup target add wasm32-unknown-unknown wasm32-wasip1 --toolchain nightly-2025-07-16
 
 COPY build.sh *.options $SRC/

projects/wasmtime/build.sh

@@ -50,7 +50,7 @@ build() {
   for f in $fuzz_targets; do
       src_name=$(basename ${f%.*})
       dst_name=$fuzzer_prefix$src_name
-      cp $FUZZ_TARGET_OUTPUT_DIR/$src_name $OUT/$dst_name
+      mv $FUZZ_TARGET_OUTPUT_DIR/$src_name $OUT/$dst_name
 
       if [[ -f $SRC/$dst_name.options ]]; then
         cp $SRC/$dst_name.options $OUT/$dst_name.options