mainline 6.2.0

Simple, robust, BitTorrent's Mainline DHT implementation
Documentation
name: Rust CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always

jobs:
  fmt:
    name: Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt

      - name: Check formatting
        run: cargo fmt --all -- --check

  msrv:
    name: MSRV (1.85)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@1.85

      - name: Cache cargo
        uses: Swatinem/rust-cache@v2

      - name: Check MSRV
        run: cargo check --workspace --all-features

  clippy:
    name: Clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy

      - name: Cache cargo
        uses: Swatinem/rust-cache@v2

      - name: Lint with Clippy
        run: cargo clippy --workspace --all-features --bins --tests -- -D warnings

  deny:
    name: Cargo Deny
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Check licenses and advisories
        uses: EmbarkStudios/cargo-deny-action@v2

  build:
    name: Build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Cache cargo
        uses: Swatinem/rust-cache@v2

      - name: Build
        run: cargo build --release --workspace --all-features --verbose

  test:
    name: Test (${{ matrix.os }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
    steps:
      - uses: actions/checkout@v5

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Cache cargo
        uses: Swatinem/rust-cache@v2

      - name: Run tests
        run: cargo test --all-features --workspace --verbose

  docs:
    name: Documentation
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Cache cargo
        uses: Swatinem/rust-cache@v2

      - name: Build docs
        run: cargo doc --workspace --all-features --no-deps --document-private-items --verbose
        env:
          RUSTDOCFLAGS: -D warnings