diff --git a/infra/base-images/base-builder-rust/Dockerfile b/infra/base-images/base-builder-rust/Dockerfile
index a4ec327b6702..e828953fcdf5 100644
--- a/infra/base-images/base-builder-rust/Dockerfile
+++ b/infra/base-images/base-builder-rust/Dockerfile
@@ -22,4 +22,15 @@ ENV PATH=$PATH:/rust/bin
 # Set up custom environment variable for source code copy for coverage reports
 ENV OSSFUZZ_RUSTPATH /rust
 
+# Force rustup to ignore `rust-toolchain` and `rust-toolchain.toml` files by
+# manually specifying what toolchain to use. Note that this environment variable
+# is additionally used by `install_rust.sh` as the toolchain to install.
+# cf https://rust-lang.github.io/rustup/overrides.html
+ENV RUSTUP_TOOLCHAIN nightly-2024-06-17
+
+# Configure the linker used by default for x86_64 linux to be `clang` instead of
+# rustc's default of `cc` which is able to find custom-built libraries like
+# `libc++` by default more easily.
+ENV CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER clang
+
 RUN install_rust.sh
diff --git a/infra/base-images/base-builder/install_rust.sh b/infra/base-images/base-builder/install_rust.sh
index 745babdb31e1..eb8806f1b40e 100755
--- a/infra/base-images/base-builder/install_rust.sh
+++ b/infra/base-images/base-builder/install_rust.sh
@@ -15,8 +15,8 @@
 #
 ################################################################################
 
-curl https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly-2024-06-17 --profile=minimal
+curl https://sh.rustup.rs | sh -s -- -y --default-toolchain=$RUSTUP_TOOLCHAIN --profile=minimal
 cargo install cargo-fuzz && rm -rf /rust/registry
 # Needed to recompile rust std library for MSAN
-rustup component add rust-src --toolchain nightly-2024-06-17
+rustup component add rust-src
 cp -r /usr/local/lib/x86_64-unknown-linux-gnu/* /usr/local/lib/
diff --git a/projects/askama/build.sh b/projects/askama/build.sh
index dc9b7030ff28..39ddbc1c39ab 100755
--- a/projects/askama/build.sh
+++ b/projects/askama/build.sh
@@ -23,7 +23,7 @@ for CRATE_DIR in ${FUZZ_CRATE_DIRS[@]};
 do
   echo "Building crate: $CRATE_DIR"
   cd $CRATE_DIR
-  cargo +nightly-2023-12-28 fuzz build -O
+  cargo fuzz build -O
   FUZZ_TARGET_OUTPUT_DIR=fuzz/target/x86_64-unknown-linux-gnu/release
   for f in fuzz/fuzz_targets/*.rs
   do
diff --git a/projects/crosvm/build.sh b/projects/crosvm/build.sh
index cdda20e505c8..869abc36dedf 100755
--- a/projects/crosvm/build.sh
+++ b/projects/crosvm/build.sh
@@ -19,7 +19,7 @@ cd crosvm
 
 # Build crosvm fuzzers
 # Unset the SRC variable as it will interfere with minijail's common.mk framework.
-env -u SRC cargo +nightly-2023-12-28 fuzz build -O
+env -u SRC cargo fuzz build -O
 
 # Copy fuzzer binaries to $OUT
 FUZZ_TARGET_OUTPUT_DIR="target/x86_64-unknown-linux-gnu/release"
diff --git a/projects/gitoxide/build.sh b/projects/gitoxide/build.sh
index 8bd52d90230b..7ed2666e0874 100755
--- a/projects/gitoxide/build.sh
+++ b/projects/gitoxide/build.sh
@@ -25,19 +25,19 @@ for CRATE_DIR in ${FUZZ_CRATE_DIRS[@]};
 do
   echo "Building crate: $CRATE_DIR"
   cd $CRATE_DIR
-  cargo +nightly-2023-12-28 fuzz build -O --debug-assertions
+  cargo fuzz build -O --debug-assertions
   FUZZ_TARGET_OUTPUT_DIR=$CARGO_BUILD_TARGET_DIR/x86_64-unknown-linux-gnu/release
   for f in fuzz/fuzz_targets/*.rs
   do
       FUZZ_TARGET_NAME=$(basename ${f%.*})
       CRATE_NAME=$(basename $CRATE_DIR)
       OUT_FUZZER_NAME=$OUT/$CRATE_NAME-$FUZZ_TARGET_NAME
-      cp $FUZZ_TARGET_OUTPUT_DIR/$FUZZ_TARGET_NAME $OUT_FUZZER_NAME 
-      FUZZ_CORPUS_BUILDER=./fuzz/fuzz_targets/${FUZZ_TARGET_NAME}_corpus_builder.sh      
+      cp $FUZZ_TARGET_OUTPUT_DIR/$FUZZ_TARGET_NAME $OUT_FUZZER_NAME
+      FUZZ_CORPUS_BUILDER=./fuzz/fuzz_targets/${FUZZ_TARGET_NAME}_corpus_builder.sh
       if test -f "$FUZZ_CORPUS_BUILDER"; then
           $FUZZ_CORPUS_BUILDER $SRC/gitoxide ${OUT_FUZZER_NAME}_seed_corpus.zip
       fi
-      FUZZ_DICT=./fuzz/fuzz_targets/${FUZZ_TARGET_NAME}.dict      
+      FUZZ_DICT=./fuzz/fuzz_targets/${FUZZ_TARGET_NAME}.dict
       if test -f "$FUZZ_DICT"; then
             cp $FUZZ_DICT ${OUT_FUZZER_NAME}.dict
       fi
diff --git a/projects/linkerd2-proxy/build.sh b/projects/linkerd2-proxy/build.sh
index 3a1a4cc457f2..f592c56067e7 100755
--- a/projects/linkerd2-proxy/build.sh
+++ b/projects/linkerd2-proxy/build.sh
@@ -23,7 +23,7 @@ then
   export CFLAGS=""
 fi
 
-BUILD_FUZZER="cargo +nightly-2023-12-28 fuzz build "
+BUILD_FUZZER="cargo fuzz build "
 TARGET_PATH="./fuzz/target/x86_64-unknown-linux-gnu/release"
 BASE="$SRC/linkerd2-proxy/linkerd"
 
diff --git a/projects/naga/build.sh b/projects/naga/build.sh
index b7d68cacf9e2..b8e7c0224d8a 100755
--- a/projects/naga/build.sh
+++ b/projects/naga/build.sh
@@ -15,7 +15,7 @@
 #
 ################################################################################
 
-cargo +nightly-2023-12-28 fuzz build -O
+cargo fuzz build -O
 fuzz_release=$SRC/wgpu/target/x86_64-unknown-linux-gnu/release
 cp $fuzz_release/spv_parser $OUT/
 cp $fuzz_release/wgsl_parser $OUT/
diff --git a/projects/opendal/build.sh b/projects/opendal/build.sh
index b915530efd1e..351f25aa70bb 100644
--- a/projects/opendal/build.sh
+++ b/projects/opendal/build.sh
@@ -15,7 +15,7 @@
 
 # build fuzz targets
 cd $SRC/opendal/core
-cargo +nightly-2023-12-28 fuzz build -O --debug-assertions
+cargo fuzz build -O --debug-assertions
 
 # copy fuzz targets to $OUT
 targets=(
diff --git a/projects/opensk/build.sh b/projects/opensk/build.sh
index 8ee826f2964d..66e51fdd2193 100755
--- a/projects/opensk/build.sh
+++ b/projects/opensk/build.sh
@@ -17,10 +17,6 @@
 
 FUZZ_TARGET_OUTPUT_DIR=fuzz/target/x86_64-unknown-linux-gnu/release
 
-# do not use override toolchain
-# cf https://rust-lang.github.io/rustup/overrides.html
-export RUSTUP_TOOLCHAIN=nightly-2023-12-28
-
 build_and_copy() {
   pushd "$1"
   cargo fuzz build --release --debug-assertions