joe 729fd52411 change mod name, fmt code %!s(int64=4) %!d(string=hai) anos
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machine.go 9089f62667 slightly update: Changed mod name; run go mod tidy; rename func names %!s(int64=4) %!d(string=hai) anos
machine_test.go 729fd52411 change mod name, fmt code %!s(int64=4) %!d(string=hai) anos