Merge pull request #120 from Burning1020/fix-priv-netns #915

Job	Run time
checks (vmm/sandbox, --all-features)	4m 26s
checks (vmm/task, --all-features)	3m 45s
tests (vmm/sandbox, --all-features)	3m 23s
checks (shim, --all-features)	3m 55s
tests (vmm/task, --all-features)	2m 38s
checks (quark, --all-features)	3m 46s
tests (shim, --all-features)	2m 38s
checks (runc, --all-features)	3m 58s
tests (quark, --all-features)	2m 19s
tests (runc, --all-features)	2m 43s
checks (wasm, --features=wasmedge, 0.11.2)	4m 2s
tests (wasm, --features=wasmedge, 0.11.2)	2m 43s
checks (wasm, --features=wasmtime)	4m 8s
tests (wasm, --features=wasmtime)	3m 21s
	47m 45s

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