The following table shows known good combinations of toolchain versions.
-| | Clang 7 | Clang 8 | Clang 9 | Clang 10 |
-|-----------|-----------|-----------|-----------|-----------|
-| Rust 1.34 | ✗ | ✓ | ✗ | ✗ |
-| Rust 1.35 | ✗ | ✓ | ✗ | ✗ |
-| Rust 1.36 | ✗ | ✓ | ✗ | ✗ |
-| Rust 1.37 | ✗ | ✓ | ✗ | ✗ |
-| Rust 1.38 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.39 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.40 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.41 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.42 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.43 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.44 | ✗ | ✗ | ✓ | ✗ |
-| Rust 1.45 | ✗ | ✗ | ✗ | ✓ |
-| Rust 1.46 | ✗ | ✗ | ✗ | ✓ |
+| Rust Version | Clang Version |
+|--------------|---------------|
+| Rust 1.34 | Clang 8 |
+| Rust 1.35 | Clang 8 |
+| Rust 1.36 | Clang 8 |
+| Rust 1.37 | Clang 8 |
+| Rust 1.38 | Clang 9 |
+| Rust 1.39 | Clang 9 |
+| Rust 1.40 | Clang 9 |
+| Rust 1.41 | Clang 9 |
+| Rust 1.42 | Clang 9 |
+| Rust 1.43 | Clang 9 |
+| Rust 1.44 | Clang 9 |
+| Rust 1.45 | Clang 10 |
+| Rust 1.46 | Clang 10 |
Note that the compatibility policy for this feature might change in the future.