Added some debugging print statements #1

Job	Run time
contrib-unit-test-coverage	2m 14s
contrib-build (amd64)	1m 37s
contrib-lint (contrib/nydusify)	1m 22s
nydus-build (amd64)	5m 31s
contrib-build (arm64)	3m 40s
contrib-lint (contrib/ctr-remote)	1m 4s
cargo-deny	39s
nydus-build (arm64)	5m 38s
contrib-build (ppc64le)	1m 33s
contrib-lint (contrib/nydus-overlayfs)	51s
nydus-build (ppc64le)	5m 12s
contrib-build (riscv64)	1m 34s
nydusd-build-macos (amd64)	6m 4s
nydusd-build-macos (arm64)	6m 57s
nydus-build (riscv64)	5m 44s
nydus-unit-test	5m 8s
nydus-unit-test-coverage	3m 46s
upload-coverage-to-codecov	5s
takeover-test	1m 34s
nydus-integration-test	1m 2s
performance-test (fs-version-5)	1m 38s
performance-test (fs-version-6)	1m 20s
performance-test (zran)	1m 20s
	1h 5m 33s

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