chore: cleanup for rust toolchain replacement

.github/workflows/linux_arm64.yml

@@ -126,8 +126,6 @@ jobs:
           bash nodesource_setup.sh
           sudo apt-get install -y nodejs
 
-          rustup default stable
-
           pip3 install --use-pep517 python-dotenv jinja2
 
           df -h .

.github/workflows/linux_ubuntu2204.yml

@@ -179,12 +179,7 @@ jobs:
             # library is instrumented with AddressSanitizer.
             rustup update stable
             if [ "${{ matrix.build_type }}" = "debug" ]; then
-              echo "Setting Rust toolchain to stable with the GNU ASAN target"
-              rustup default stable
               rustup target add --toolchain stable x86_64-unknown-linux-gnuasan
-            else
-              echo "Setting Rust toolchain to stable for Linux release build"
-              rustup default stable
             fi
 
             rustc --version

.github/workflows/mac_arm64.yml

@@ -123,8 +123,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest
@@ -431,8 +429,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest
@@ -604,8 +600,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest
@@ -703,8 +697,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest
@@ -810,8 +802,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest
@@ -917,8 +907,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest

.github/workflows/mac_x64.yml

@@ -123,8 +123,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           brew install gettext
 
@@ -482,8 +480,6 @@ jobs:
           # Due to https://github.com/llvm/llvm-project/issues/155531, we need
           # to use llvm@20 currently, and will switch to llvm when it is solved.
           brew install llvm@20
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2 requests
           go install golang.org/dl/go1.24.3@latest

.github/workflows/tman_full_linux_arm64.yml

@@ -138,8 +138,6 @@ jobs:
 
           cd ${{ github.workspace }}
 
-          rustup default stable
-
           df -h .
 
           EXTRA_ARGS="is_clang=true log_level=1 enable_serialized_actions=true ten_rust_enable_gen_cargo_config=false ten_enable_cargo_clean=true ten_enable_go_lint=false ten_enable_rust_incremental_build=false ten_manager_enable_frontend=true ten_enable_ffmpeg_extensions=false ten_enable_nodejs_binding=false ten_enable_python_binding=false ten_enable_go_binding=false ten_enable_ten_rust=true ten_enable_ten_manager=true"

.github/workflows/tman_full_linux_x64.yml

@@ -139,16 +139,9 @@ jobs:
           export PATH=$(pwd)/core/ten_gn:$PATH
           echo $PATH
 
-          # Linux x64 debug builds use the stable ASAN target, whose standard
-          # library is instrumented with AddressSanitizer.
           rustup update stable
           if [ "${{ matrix.build_type }}" = "debug" ]; then
-            echo "Setting Rust toolchain to stable with the GNU ASAN target"
-            rustup default stable
             rustup target add --toolchain stable x86_64-unknown-linux-gnuasan
-          else
-            echo "Setting Rust toolchain to stable for Linux release build"
-            rustup default stable
           fi
 
           df -h .

.github/workflows/tman_full_mac_arm64.yml

@@ -118,8 +118,6 @@ jobs:
 
       - name: Install tools and dependencies
         run: |
-          rustup default stable
-
           brew install tree
           pip3 install --use-pep517 python-dotenv jinja2
           go install golang.org/dl/go1.24.3@latest

.github/workflows/tman_full_mac_x64.yml

@@ -118,8 +118,6 @@ jobs:
 
       - name: Install tools and dependencies
         run: |
-          rustup default stable
-
           brew install tree
           brew install gettext
 

.github/workflows/win.yml

@@ -34,6 +34,15 @@ jobs:
     runs-on: windows-latest
     env:
       PYTHONIOENCODING: utf-8
+      # Must use nightly for MinGW, otherwise error[E0554] will be triggered
+      # when rustc is building tman.exe, because sysinfo 0.32 uses
+      # "#![cfg_attr(target_os = "windows", feature(windows_by_handle))]"
+      # to use windows file handle API, which "may not be used on the stable
+      # release channel"
+      # For msvc, we also need to use nightly when ten_enable_go_binding=true
+      # because Go always uses MinGW toolchain on Windows (CGO requires
+      # GCC-compatible compiler) and the above issues will also happen.
+      RUSTUP_TOOLCHAIN: ${{ matrix.compiler == 'mingw' && 'nightly-x86_64-pc-windows-gnu' || 'nightly-x86_64-pc-windows-msvc' }}
     strategy:
       fail-fast: false
       matrix:
@@ -216,19 +225,7 @@ jobs:
           go1.24.3 version
           go env -w GOFLAGS="-buildvcs=false"
 
-          if ("${{ matrix.compiler }}" -eq "mingw") {
-            # Must use nightly for MinGW, otherwise error[E0554] will be triggered
-            # when rustc is building tman.exe, because sysinfo 0.32 uses
-            # "#![cfg_attr(target_os = "windows", feature(windows_by_handle))]"
-            # to use windows file handle API, which "may not be used on the stable
-            # release channel"
-            rustup default nightly-x86_64-pc-windows-gnu
-          } else {
-            # For msvc, we also need to use nightly when ten_enable_go_binding=true
-            # because Go always uses MinGW toolchain on Windows (CGO requires
-            # GCC-compatible compiler) and the above issues will also happen.
-            rustup default nightly-x86_64-pc-windows-msvc
-          }
+          rustup update $env:RUSTUP_TOOLCHAIN
           cargo install --force cbindgen
 
           Write-Output "Verifying Rust toolchain..."
@@ -283,15 +280,6 @@ jobs:
           $argsString = $buildArgs -join " "
           Write-Host "Build arguments: $argsString"
 
-          # Set toolchain or else toolchain may be switched during build
-          if ("${{ matrix.compiler }}" -eq "mingw") {
-            $env:RUSTUP_TOOLCHAIN = "nightly-x86_64-pc-windows-gnu"
-          }
-          else {
-            $env:RUSTUP_TOOLCHAIN = "nightly-x86_64-pc-windows-msvc"
-          }
-          echo $env:RUSTUP_TOOLCHAIN
-
           tgn gen win x64 ${{ matrix.build_type }} -- $argsString
           tgn build win x64 ${{ matrix.build_type }}
 
@@ -1108,13 +1096,6 @@ jobs:
         run: |
           $ENV:PATH += ";$PWD/core/ten_gn"
 
-          if ("${{ matrix.compiler }}" -eq "mingw") {
-            # Set toolchain to force use of the nightly-x86_64-pc-windows-gnu
-            # Or else toolchain may be switched to msvc during build
-            $env:RUSTUP_TOOLCHAIN = "nightly-x86_64-pc-windows-gnu"
-            echo $env:RUSTUP_TOOLCHAIN
-          }
-
           cd out/win/x64/
           pytest -s tests/ten_runtime/integration/python/
 
@@ -1287,13 +1268,6 @@ jobs:
         run: |
           $ENV:PATH += ";$PWD/core/ten_gn"
 
-          if ("${{ matrix.compiler }}" -eq "mingw") {
-            # Set toolchain to force use of the nightly-x86_64-pc-windows-gnu
-            # Or else toolchain may be switched to msvc during build
-            $env:RUSTUP_TOOLCHAIN = "nightly-x86_64-pc-windows-gnu"
-            echo $env:RUSTUP_TOOLCHAIN
-          }
-
           cd out/win/x64/
           pytest -s tests/ten_runtime/integration/cpp/
       #   continue-on-error: true

build/ten_common/rust/rust.gni

@@ -125,13 +125,6 @@ template("rust_target") {
       }
     }
 
-    if (target == "x86_64-unknown-linux-gnuasan") {
-      args += [
-        "--env",
-        "RUSTUP_TOOLCHAIN=stable",
-      ]
-    }
-
     args += [
       "--target",
       target,
@@ -327,13 +320,6 @@ template("rust_test") {
       }
     }
 
-    if (target == "x86_64-unknown-linux-gnuasan") {
-      args += [
-        "--env",
-        "RUSTUP_TOOLCHAIN=stable",
-      ]
-    }
-
     args += [
       "--target",
       target,
@@ -451,13 +437,6 @@ template("rust_gen_cargo_config") {
       rebase_path(_output),
     ]
 
-    args += [ "--compiler" ]
-    if (is_clang) {
-      args += [ "clang" ]
-    } else {
-      args += [ "gcc" ]
-    }
-
     if (is_win) {
       if (is_mingw) {
         # MinGW target for Windows
@@ -505,10 +484,6 @@ template("rust_gen_cargo_config") {
     args += [
       "--target",
       target,
-      "--target-os",
-      target_os,
-      "--target-arch",
-      target_cpu,
     ]
 
     if (enable_sanitizer && ten_rust_enable_gen_cargo_config) {