echoes 0.7.0

Find duplicated Rust doctests, functions and contexts
Documentation 
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---
name: Mutants

"on":
  pull_request:
  push:
    branches:
      - main

permissions:
  contents: read

concurrency:
  group: mutants-${{ github.workflow }}-${{ github.ref }}
  # A push to `main` runs to the end, and only the newest waiting push follows it.
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

env:
  CARGO_TERM_COLOR: always
  CARGO_PROFILE_TEST_DEBUG: "0"
  NEXTEST_PROFILE: mutants
  RUSTC_WRAPPER: sccache

jobs:
  mutants:
    name: Mutation testing ${{ strategy.job-index }}
    runs-on: ubuntu-latest
    timeout-minutes: 330
    if: >-
      github.event_name == 'push' ||
      (github.event.pull_request.head.repo.full_name == github.repository &&
      github.event.pull_request.user.login != 'dependabot[bot]')
    strategy:
      fail-fast: false
      matrix:
        # A pull request mutates only its own change, `main` the whole workspace.
        shard: ${{ fromJSON(github.event_name == 'pull_request' && '[0,1,2,3,4,5,6,7]' || '[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31]') }}
    steps:
      - uses: actions/checkout@v4
        timeout-minutes: 3
        with:
          fetch-depth: 2
      - name: Cache cargo downloads
        uses: actions/cache@v6
        timeout-minutes: 3
        with:
          path: |
            ~/.cargo/registry/index
            ~/.cargo/registry/cache
            ~/.cargo/git/db
          key: dl-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            dl-${{ runner.os }}-
      - uses: dtolnay/rust-toolchain@6bed0761d98439e5a578e2877258200ad565ba87 # stable
        with:
          toolchain: stable
        timeout-minutes: 5
      - uses: mozilla-actions/sccache-action@7d986dd989559c6ecdb630a3fd2557667be217ad # v0.0.9
        timeout-minutes: 5
      - name: Install cargo-mutants and cargo-nextest
        uses: taiki-e/install-action@8cca0918f8471c33515202b73f56ab27f2bed283 # v2.87.29
        timeout-minutes: 5
        with:
          tool: cargo-mutants@27.1.0,cargo-nextest
      - name: Diff the pull request
        if: github.event_name == 'pull_request'
        run: git diff HEAD^1 HEAD > git.diff
      - name: Run mutants
        timeout-minutes: 300
        run: >-
          cargo mutants --workspace --jobs 2
          --shard ${{ strategy.job-index }}/${{ strategy.job-total }}
          ${{ github.event_name == 'pull_request' && '--in-diff git.diff' || '' }}
      - name: Upload mutation outcome
        if: always()
        uses: actions/upload-artifact@v4
        timeout-minutes: 3
        with:
          name: mutants-shard-${{ strategy.job-index }}
          path: mutants.out