ci: Improve performance of no-std tests

.github/workflows/ci.yml

@@ -615,9 +615,9 @@ jobs:
         with:
           toolchain: ${{ matrix.rust }}
       - uses: taiki-e/install-action@cargo-hack
-        if: startsWith(matrix.rust, 'nightly')
+        if: matrix.rust == 'stable'
       - uses: taiki-e/install-action@espup
-        if: startsWith(matrix.rust, 'nightly')
+        if: matrix.rust == 'stable'
       - run: |
           retry() {
             for i in {1..10}; do
@@ -645,17 +645,19 @@ jobs:
           retry sudo apt-get -o Acquire::Retries=10 -qq update
           retry sudo apt-get -o Acquire::Retries=10 -o Dpkg::Use-Pty=0 install -y --no-install-recommends "${apt_packages[@]}"
           # APT's qemu package doesn't provide firmware for riscv32: https://packages.ubuntu.com/en/jammy/all/qemu-system-data/filelist
-          OPENSBI_VERSION=1.5.1 # https://github.com/riscv-software-src/opensbi/releases
-          retry curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused "https://github.com/riscv-software-src/opensbi/releases/download/v${OPENSBI_VERSION}/opensbi-${OPENSBI_VERSION}-rv-bin.tar.xz" \
+          opensbi_version=1.5.1 # https://github.com/riscv-software-src/opensbi/releases
+          retry curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused "https://github.com/riscv-software-src/opensbi/releases/download/v${opensbi_version}/opensbi-${opensbi_version}-rv-bin.tar.xz" \
             | tar xJf -
-          sudo mv -- "opensbi-${OPENSBI_VERSION}-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.bin" /usr/share/qemu/opensbi-riscv32-generic-fw_dynamic.bin
-          sudo mv -- "opensbi-${OPENSBI_VERSION}-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.elf" /usr/share/qemu/opensbi-riscv32-generic-fw_dynamic.elf
-          rm -rf -- "opensbi-${OPENSBI_VERSION}-rv-bin"
+          sudo mv -- "opensbi-${opensbi_version}-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.bin" /usr/share/qemu/opensbi-riscv32-generic-fw_dynamic.bin
+          sudo mv -- "opensbi-${opensbi_version}-rv-bin/share/opensbi/ilp32/generic/firmware/fw_dynamic.elf" /usr/share/qemu/opensbi-riscv32-generic-fw_dynamic.elf
+          rm -rf -- "opensbi-${opensbi_version}-rv-bin"
           if [[ "${{ matrix.rust }}" == "nightly"* ]]; then
             mkdir -p -- "${HOME}"/msp430-gcc
+            # https://www.ti.com/tool/MSP430-GCC-OPENSOURCE
             retry curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused https://dr-download.ti.com/software-development/ide-configuration-compiler-or-debugger/MD-LlCjWuAbzH/9.3.1.2/msp430-gcc-9.3.1.11_linux64.tar.bz2 \
               | tar xjf - --strip-components 1 -C "${HOME}"/msp430-gcc
             printf '%s\n' "${HOME}"/msp430-gcc/bin >>"${GITHUB_PATH}"
+          elif [[ "${{ matrix.rust }}" == "stable" ]]; then
             retry espup install --targets esp32s2
           fi
         env:
@@ -676,9 +678,9 @@ jobs:
         if: startsWith(matrix.rust, 'nightly-')
       - run: tools/no-std.sh
       - run: tools/build.sh +esp xtensa-esp32s2-none-elf
-        if: startsWith(matrix.rust, 'nightly')
+        if: matrix.rust == 'stable'
       - run: tools/no-std.sh +esp xtensa-esp32s2-none-elf
-        if: startsWith(matrix.rust, 'nightly')
+        if: matrix.rust == 'stable'
 
   miri:
     needs: tidy

tests/msp430/.cargo/config.toml

@@ -1,6 +1,3 @@
-[build]
-target-dir = "../../target"
-
 [target.'cfg(all(target_arch = "msp430", target_os = "none"))']
 # Not in PATH (handled in tools/no-std.sh).
 # runner = "mspdebug-test-runner.sh"