master make failed when fetch go mod

[tisonkun]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

run make under project root path

2. What did you expect to see? (Required)

successfully build tidb-server

3. What did you see instead (Required)

go: github.com/pingcap/tidb/ddl imports
	github.com/go-yaml/yaml: github.com/go-yaml/yaml@v0.0.0-20201117154620-7649d4548cb5: parsing go.mod:
	module declares its path as: gopkg.in/yaml.v2
	        but was required as: github.com/go-yaml/yaml

4. What is your TiDB version? (Required)

master 381ac81

$ uname -a
Darwin tisons-MacBook-Pro.local 19.6.0 Darwin Kernel Version 19.6.0: Tue Nov 10 00:10:30 PST 2020; root:xnu-6153.141.10~1/RELEASE_X86_64 x86_64

$ go version
go version go1.15.8 darwin/amd64

[tisonkun]

the root cause is related to pingcap/tidb-dashboard#850

workaround with comment pingcap/tidb-dashboard#850 (comment)

[ti-srebot]

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5. Affected versions

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[tisonkun]

I don't find a way to "Remove the 'type/bug' label". Is the reason I don't have related credit?