rustc option "instrument-coverage" stabilized

.github/workflows/CICD.yml

@@ -79,12 +79,12 @@ jobs:
           key: test-${{ runner.os }}-cargo-gcc-${{ matrix.gcc }}-clang-${{ matrix.clang }}-${{ hashFiles('**/Cargo.lock') }}
       - name: Build
         env:
-          RUSTFLAGS: -Zinstrument-coverage
+          RUSTFLAGS: -Cinstrument-coverage
         run: cargo build
       - name: Test
         env:
           LLVM_PROFILE_FILE: grcov-%p-%m.profraw
-          RUSTFLAGS: -Zinstrument-coverage
+          RUSTFLAGS: -Cinstrument-coverage
         run: cargo test
       - name: Generate coverage
         run: |

README.md

@@ -159,8 +159,7 @@ you can run `cargo install grcov`.
 
 ## Usage
 
-**Nightly Rust is required** to use grcov for Rust coverage. Alternatively, you can `export
-RUSTC_BOOTSTRAP=1`, which basically turns your stable rustc into a Nightly one.
+Build your code with rust compiler flag `-C instrument-coverage`. and run with `LLWM_PROFILE_FILE` environment variable.
 
 ### Example: How to generate source-based coverage for a Rust project
 
@@ -173,7 +172,7 @@ RUSTC_BOOTSTRAP=1`, which basically turns your stable rustc into a Nightly one.
 2. Ensure that the following environment variable is set up:
 
    ```sh
-   export RUSTFLAGS="-Zinstrument-coverage"
+   export RUSTFLAGS="-C instrument-coverage"
    ```
 
 3. Build your code:
@@ -265,11 +264,11 @@ before_install:
 matrix:
   include:
     - os: linux
-      rust: nightly
+      rust: stable
 
 script:
     - rustup component add llvm-tools-preview
-    - export RUSTFLAGS="-Zinstrument-coverage"
+    - export RUSTFLAGS="-Cinstrument-coverage"
     - cargo build --verbose
     - LLVM_PROFILE_FILE="your_name-%p-%m.profraw" cargo test --verbose
     - ./grcov . --binary-path ./target/debug/ -s . -t lcov --branch --ignore-not-existing --ignore "/*" -o lcov.info
@@ -287,7 +286,7 @@ before_install:
 matrix:
   include:
     - os: linux
-      rust: nightly
+      rust: stable
 
 script:
     - export CARGO_INCREMENTAL=0