reduce 0.1.5+deprecated

Fold an iterator without an initial value
Documentation 
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
32
33
34
35
36
37
38
39
40

name: CI

on:
  push:
  pull_request:
  schedule: [cron: "40 1 * * *"]

permissions:
  contents: read

env:
  RUSTFLAGS: -Dwarnings

jobs:
  test:
    name: Rust ${{matrix.rust}}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        rust: [nightly, beta, stable, 1.50.0, 1.31.0]
    timeout-minutes: 45
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{matrix.rust}}
      - run: cargo check
      - run: cargo test
        if: matrix.rust == '1.50.0' || matrix.rust == '1.31.0'

  clippy:
    name: Clippy
    runs-on: ubuntu-latest
    if: github.event_name != 'pull_request'
    timeout-minutes: 45
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@clippy
      - run: cargo clippy -- -Dclippy::all -Dclippy::pedantic