build: bump rustc requirement to >=1.86

Signed-off-by: Renegade334 <contact.9a5d6388@renegade334.me.uk>
PR-URL: #64543
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

Author: Renegade334

.github/workflows/coverage-windows.yml

@@ -60,7 +60,7 @@ concurrency:
 env:
   PYTHON_VERSION: '3.14'
   FLAKY_TESTS: keep_retrying
-  RUSTC_VERSION: '1.83'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

.github/workflows/stress-test.yml

@@ -36,7 +36,7 @@ env:
   PYTHON_VERSION: '3.14'
   XCODE_VERSION: '16.4'
   CLANG_VERSION: '19'
-  RUSTC_VERSION: '1.83'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

.github/workflows/test-linux-quic.yml

@@ -37,7 +37,7 @@ env:
   CXX: ${{ (github.base_ref == 'main' || github.ref_name == 'main') && 'sccache' || '' }} clang++-19
   SCCACHE_GHA_ENABLED: ${{ github.base_ref == 'main' || github.ref_name == 'main' }}
   SCCACHE_IDLE_TIMEOUT: '0'
-  RUSTC_VERSION: '1.83'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

.github/workflows/test-linux.yml

@@ -44,7 +44,7 @@ env:
   CXX: ${{ (github.base_ref == 'main' || github.ref_name == 'main') && 'sccache' || '' }} clang++-19
   SCCACHE_GHA_ENABLED: ${{ github.base_ref == 'main' || github.ref_name == 'main' }}
   SCCACHE_IDLE_TIMEOUT: '0'
-  RUSTC_VERSION: '1.83'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

.github/workflows/test-macos.yml

@@ -66,7 +66,7 @@ env:
   PYTHON_VERSION: '3.14'
   XCODE_VERSION: '16.4'
   FLAKY_TESTS: keep_retrying
-  RUSTC_VERSION: '1.83'
+  RUSTC_VERSION: '1.86'
 
 permissions:
   contents: read

BUILDING.md

@@ -1057,8 +1057,8 @@ Node.js supports the [Temporal](https://github.com/tc39/proposal-temporal) APIs,
 linking statically or dynamically with a version of [temporal\_rs](https://github.com/boa-dev/temporal).
 Building it requires a Rust toolchain:
 
-* rustc >= 1.83 (with LLVM >= 19)
-* cargo >= 1.83
+* rustc >= 1.86 (with LLVM >= 19)
+* cargo >= 1.86
 
 Refer to [Install Rust](https://rust-lang.org/tools/install/) for instructions.
 Individual packages such as `rust` and `cargo` in some operating system distributions may be considered