Merge rust-lang#76

76: Update CI to Debian bookworm. r=ptersilie a=vext01



Co-authored-by: Edd Barrett <vext01@gmail.com>

Author: bors[bot]

.buildbot_dockerfile_debian

@@ -1,16 +1,16 @@
-FROM debian:bullseye
+FROM debian:bookworm
 ARG CI_UID
 RUN useradd -m -u ${CI_UID} ci
 RUN apt-get update && \
-    apt-get -y install clang-13 make curl cmake python3-distutils git \
+    apt-get -y install clang-15 make curl cmake python3-distutils git \
     ninja-build
 WORKDIR /ci
-RUN update-alternatives --install /usr/bin/cc cc /usr/bin/clang-13 999
-RUN update-alternatives --set cc /usr/bin/clang-13
-RUN update-alternatives --install /usr/bin/c++ c++ /usr/bin/clang++-13 999
-RUN update-alternatives --set c++ /usr/bin/clang++-13
-RUN ln -sf /usr/bin/clang-13 /usr/bin/clang
-RUN ln -sf /usr/bin/clang++-13 /usr/bin/clang++
+RUN update-alternatives --install /usr/bin/cc cc /usr/bin/clang-15 999
+RUN update-alternatives --set cc /usr/bin/clang-15
+RUN update-alternatives --install /usr/bin/c++ c++ /usr/bin/clang++-15 999
+RUN update-alternatives --set c++ /usr/bin/clang++-15
+RUN ln -sf /usr/bin/clang-15 /usr/bin/clang
+RUN ln -sf /usr/bin/clang++-15 /usr/bin/clang++
 RUN chown ${CI_UID}:${CI_UID} .
 COPY --chown=${CI_UID}:${CI_UID} . .
 CMD sh -x .buildbot.sh