Update libafl-based fuzzers (from AFL++ fork) (google#2027)

Changing forks so @tokatoka can collab with me on this. Supercedes
As requested in google#2020.

Author: addisoncrump

fuzzers/libafl/builder.Dockerfile

@@ -19,6 +19,7 @@ FROM $parent_image
 RUN if which rustup; then rustup self uninstall -y; fi && \
     curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > /rustup.sh && \
     sh /rustup.sh --default-toolchain nightly-2024-08-12 -y && \
+    sh /rustup.sh --default-toolchain nightly-2024-08-12 -y && \
     rm /rustup.sh
 
 # Install dependencies.
@@ -38,17 +39,19 @@ RUN wget https://gist.githubusercontent.com/tokatoka/26f4ba95991c6e3313999997633
 RUN git clone https://github.com/AFLplusplus/LibAFL /libafl
 
 # Checkout a current commit
-RUN cd /libafl && git pull && git checkout f856092f3d393056b010fcae3b086769377cba18 || true
+RUN cd /libafl && git pull && git checkout f3433767bea0cc3d7ee3b4c08be138e61d20c468 || true
 # Note that due a nightly bug it is currently fixed to a known version on top!
 
 # Compile libafl.
 RUN cd /libafl && \
     unset CFLAGS CXXFLAGS && \
     export LIBAFL_EDGES_MAP_SIZE=2621440 && \
     cd ./fuzzers/fuzzbench/fuzzbench && \
+    cd ./fuzzers/fuzzbench/fuzzbench && \
     PATH="/root/.cargo/bin/:$PATH" cargo build --profile release-fuzzbench --features no_link_main
 
 # Auxiliary weak references.
+RUN cd /libafl/fuzzers/fuzzbench/fuzzbench && \
 RUN cd /libafl/fuzzers/fuzzbench/fuzzbench && \
     clang -c stub_rt.c && \
     ar r /stub_rt.a stub_rt.o