"cannot load p: cannot find module providing package p"

[kelezj]

when use travis-ci, go test failed,
code：
https://github.com/dappledger/AnnChain/tree/codecov
logs:
https://travis-ci.org/dappledger/AnnChain/builds/588744108

抛错信息
”ok github.com/dappledger/AnnChain/gemmill/utils 0.002s
The command "make test" exited with 0.
0.82s$ go test ./... -coverprofile=coverage.txt -covermode=atomic
build github.com/dappledger/AnnChain/go/misc/cgo/testcarchive/src/libgo: cannot load p: cannot find module providing package p
The command "go test ./... -coverprofile=coverage.txt -covermode=atomic" exited with 1.“

[needkane]

"build github.com/dappledger/AnnChain/go/misc/cgo/testcarchive/src/libgo: cannot load p: cannot find module providing package p"

这里的go/misc/cgo/testcarchive/src/libgo 非此项目的代码，是travis 将golang 源码放到了当前路径下