fix: check whether tmp swap file can be written to #443

	name: C/C++ CI

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest
	continue-on-error: true
	strategy:
	matrix:
	compiler:
	- { name: Clang, cc: clang, cxx: clang++ }
	- { name: GNU, cc: gcc, cxx: g++ }
	build-mode: [Debug, Release]
	timeout-minutes: 60
	steps:
	- name: Install dependencies
	run: sudo apt-get install -y libopenmpi3 libopenmpi-dev libsparsehash-dev
	- uses: actions/checkout@v4
	with:
	submodules: 'recursive'
	- name: export-compiler
	run: \|
	echo CXX=${{ matrix.compiler.cxx }} >> $GITHUB_ENV
	echo CC=${{ matrix.compiler.cc }} >> $GITHUB_ENV
	- name: cpu-cores
	uses: SimenB/github-actions-cpu-cores@v2
	id: cpu-cores
	- name: print-cpu-cores
	run: echo ${{ steps.cpu-cores.outputs.count }}
	- name: cmake
	run: cmake -B build -DCMAKE_BUILD_TYPE=${{ matrix.build-mode }} -DCMAKE_CXX_COMPILER=${{ matrix.compiler.cxx }} -DCMAKE_C_COMPILER=${{ matrix.compiler.cc }} -DKAGEN_WARNINGS_ARE_ERRORS=ON -DKAGEN_BUILD_TESTS=ON
	- name: build
	run: cmake --build build/ --parallel ${{ steps.cpu-cores.outputs.count }}
	- name: test
	run: \|
	cd ./build
	ctest --output-on-failure

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