Bump rust toolchain to 1.77 #2441

	name: CI

	on:
	merge_group:
	push:
	pull_request:

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

	env:
	CARGO_TERM_COLOR: always

	defaults:
	run:
	shell: bash

	jobs:
	pr:
	name: pull_request
	if: "github.event_name == 'pull_request'"
	runs-on: ubuntu-20.04
	needs: lint
	steps:
	- name: checkout the source code
	uses: actions/checkout@v4
	- name: install rustup
	uses: ./.github/actions/install-rust-toolchain
	- name: check
	uses: actions-rs/cargo@v1
	with:
	command: check
	- name: test
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: '--lib'
	master:
	name: push
	if: "github.event_name == 'push'"
	runs-on: ubuntu-20.04
	needs: lint
	steps:
	- name: checkout the source code
	uses: actions/checkout@v4
	- name: install rustup
	uses: ./.github/actions/install-rust-toolchain
	- name: check
	uses: actions-rs/cargo@v1
	with:
	command: check
	- name: test
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: '--lib'
	lint:
	name: lint
	runs-on: ubuntu-20.04
	steps:
	- name: checkout the source code
	uses: actions/checkout@v4
	- name: install rustup
	uses: ./.github/actions/install-rust-toolchain
	with:
	components: rustfmt, clippy
	- name: fmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check
	- name: clippy
	uses: actions-rs/cargo@v1
	with:
	command: clippy
	args: --all-targets --all-features -- -D warnings

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