Use stable channel in CI

.github/rust_ci.yml

@@ -35,7 +35,7 @@ jobs:
         uses: dtolnay/rust-toolchain@v1
         with:
           target: {{ rust_target }}
-          toolchain: nightly
+          toolchain: stable
           components: rust-src, rustfmt, clippy
       {%- else %}
         uses: esp-rs/[email protected]

.github/workflows/ci.yml

@@ -54,9 +54,9 @@ jobs:
 
       # Rust toolchain for RISC-V:
       - if: matrix.chip != 'esp32' && matrix.chip != 'esp32s2' && matrix.chip != 'esp32s3'
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@stable
         with:
-          target: riscv32imac-unknown-none-elf
+          target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf
           components: clippy,rustfmt,rust-src
 
       - uses: Swatinem/rust-cache@v2

pre-script.rhai

@@ -69,7 +69,7 @@ if mcu in ["esp32", "esp32s2", "esp32s3"] {
     variable::set("arch", "riscv");
     variable::set("gcc_target", "riscv32-esp-elf");
     variable::set("rust_target", `riscv32${extensions}-unknown-none-elf`);
-    variable::set("toolchain", "nightly");
+    variable::set("toolchain", "stable");
 }
 
 let advanced = variable::get("advanced");