Update fuchsia commit, and SDK to 21.20240610.2.1

This includes a fix to the race when publishing multiple packages at the
same time.

src/ci/docker/host-x86_64/x86_64-gnu-integration/Dockerfile

@@ -26,27 +26,27 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # Duplicated in dist-various-2 Dockerfile.
 # FIXME: Move to canonical triple
 ENV \
-    AR_x86_64_fuchsia=x86_64-unknown-fuchsia-ar \
-    CC_x86_64_fuchsia=x86_64-unknown-fuchsia-clang \
-    CFLAGS_x86_64_fuchsia="--target=x86_64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot -I/usr/local/core-linux-amd64-fuchsia-sdk/pkg/fdio/include" \
-    CXX_x86_64_fuchsia=x86_64-unknown-fuchsia-clang++ \
-    CXXFLAGS_x86_64_fuchsia="--target=x86_64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot -I/usr/local/core-linux-amd64-fuchsia-sdk/pkg/fdio/include" \
-    LDFLAGS_x86_64_fuchsia="--target=x86_64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot -L/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/lib"
+    AR_x86_64_unknown_fuchsia=x86_64-unknown-fuchsia-ar \
+    CC_x86_64_unknown_fuchsia=x86_64-unknown-fuchsia-clang \
+    CFLAGS_x86_64_unknown_fuchsia="--target=x86_64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot -I/usr/local/core-linux-amd64-fuchsia-sdk/pkg/fdio/include" \
+    CXX_x86_64_unknown_fuchsia=x86_64-unknown-fuchsia-clang++ \
+    CXXFLAGS_x86_64_unknown_fuchsia="--target=x86_64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot -I/usr/local/core-linux-amd64-fuchsia-sdk/pkg/fdio/include" \
+    LDFLAGS_x86_64_unknown_fuchsia="--target=x86_64-unknown-fuchsia --sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot -L/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/lib"
 
 WORKDIR /tmp
 COPY scripts/shared.sh /tmp/
 COPY scripts/build-fuchsia-toolchain.sh /tmp/
 RUN /tmp/build-fuchsia-toolchain.sh
 
-ENV CARGO_TARGET_X86_64_FUCHSIA_AR /usr/local/bin/llvm-ar
-ENV CARGO_TARGET_X86_64_FUCHSIA_RUSTFLAGS \
+ENV CARGO_TARGET_X86_64_UNKNOWN_FUCHSIA_AR /usr/local/bin/llvm-ar
+ENV CARGO_TARGET_X86_64_UNKNOWN_FUCHSIA_RUSTFLAGS \
   -C panic=abort \
   -C force-unwind-tables=yes \
   -C link-arg=--sysroot=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot \
   -Lnative=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/sysroot/lib \
   -Lnative=/usr/local/core-linux-amd64-fuchsia-sdk/arch/x64/lib
 
-ENV TARGETS=x86_64-fuchsia
+ENV TARGETS=x86_64-unknown-fuchsia
 ENV TARGETS=$TARGETS,x86_64-unknown-linux-gnu
 ENV TARGETS=$TARGETS,wasm32-unknown-unknown
 
@@ -69,11 +69,11 @@ ENV RUST_CONFIGURE_ARGS \
   --llvm-libunwind=in-tree \
   --enable-extended \
   --disable-docs \
-  --set target.x86_64-fuchsia.cc=/usr/local/bin/clang \
-  --set target.x86_64-fuchsia.cxx=/usr/local/bin/clang++ \
-  --set target.x86_64-fuchsia.ar=/usr/local/bin/llvm-ar \
-  --set target.x86_64-fuchsia.ranlib=/usr/local/bin/llvm-ranlib \
-  --set target.x86_64-fuchsia.linker=/usr/local/bin/ld.lld
+  --set target.x86_64-unknown-fuchsia.cc=/usr/local/bin/clang \
+  --set target.x86_64-unknown-fuchsia.cxx=/usr/local/bin/clang++ \
+  --set target.x86_64-unknown-fuchsia.ar=/usr/local/bin/llvm-ar \
+  --set target.x86_64-unknown-fuchsia.ranlib=/usr/local/bin/llvm-ranlib \
+  --set target.x86_64-unknown-fuchsia.linker=/usr/local/bin/ld.lld
 ENV SCRIPT \
     python3 ../x.py install --target $TARGETS compiler/rustc library/std clippy && \
     bash ../src/ci/docker/host-x86_64/x86_64-gnu-integration/build-fuchsia.sh

src/ci/docker/host-x86_64/x86_64-gnu-integration/build-fuchsia.sh

@@ -35,7 +35,7 @@ PICK_REFS=()
 # commit hash of fuchsia.git and some other repos in the "monorepo" checkout, in
 # addition to versions of prebuilts. It should be bumped regularly by the
 # Fuchsia team – we aim for every 1-2 months.
-INTEGRATION_SHA=1011e3298775ee7cdf6f6dc73e808d6a86e33bd6
+INTEGRATION_SHA=737ebdd83afa47b742ca8325fad0176952fcefbd
 
 checkout=fuchsia
 jiri=.jiri_root/bin/jiri

src/ci/docker/scripts/build-fuchsia-toolchain.sh

@@ -4,13 +4,13 @@ set -ex
 source shared.sh
 
 FUCHSIA_SDK_URL=https://chrome-infra-packages.appspot.com/dl/fuchsia/sdk/core/linux-amd64
-FUCHSIA_SDK_ID=version:20.20240412.3.1
-FUCHSIA_SDK_SHA256=cc52f3497487dd813c89d9316e6967efcea89c7759edccf3e40fcf3662e53f19
+FUCHSIA_SDK_ID=version:21.20240610.2.1
+FUCHSIA_SDK_SHA256=2d2d057fc3f0404197cced2200f88cbcdaaf5fbf6475955045091f8676791ce7
 FUCHSIA_SDK_USR_DIR=/usr/local/core-linux-amd64-fuchsia-sdk
 CLANG_DOWNLOAD_URL=\
 https://chrome-infra-packages.appspot.com/dl/fuchsia/third_party/clang/linux-amd64
-CLANG_DOWNLOAD_ID=git_revision:c777c011a709dffd4fa5e79cad7947b7c3405d02
-CLANG_DOWNLOAD_SHA256=779167422ad73c292f049dcea5569f84577af9292189ed2749518b966a4d0844
+CLANG_DOWNLOAD_ID=git_revision:3809e20afc68d7d03821f0ec59b928dcf9befbf4
+CLANG_DOWNLOAD_SHA256=3c2c442b61cd9e8f1b567738f6d53cffe11b3fc820e7dae87a82a0859be8f204
 
 install_clang() {
   mkdir -p clang_download

src/ci/docker/scripts/fuchsia-test-runner.py

@@ -286,7 +286,7 @@ def start(self):
         # Look up the product bundle transfer manifest.
         self.log_info("Looking up the product bundle transfer manifest...")
         product_name = "minimal." + self.triple_to_arch(self.target)
-        fuchsia_version = "20.20240412.3.1"
+        fuchsia_version = "21.20240610.2.1"
 
         out = self.check_output(
             [