go: crypto: "error Never include this file directly. Use instead." during test

Hi,

We just got the following report, https://youtrack.jetbrains.com/issue/GO-5653, on our issue tracker but I believe this is a Go issue.

By the looks of it, the user is using at least Go 1.10 on a macOS. I suspect this has something to do with the fact that we force Go to compile the test binary with -gcflags="all=-N -l" in order to improve the debugging experience for the users.

Thank you.

OS: Mac OS X (10.13.4, x86_64) 
GOROOT=/usr/local/go
GOPATH=/Users/xueqzhan/source/go

/usr/local/go/bin/go test -c -o /private/var/folders/fx/2f29vz253_z8grcj9cbkq3jw0000gn/T/___TestFollowerOnly_in_planner_scheduler_election -gcflags "all=-N -l" planner-scheduler/election

# crypto/x509
In file included from /usr/local/go/src/crypto/x509/root_cgo_darwin.go:16:
In file included from /System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoundation.h:43:
In file included from /System/Library/Frameworks/CoreFoundation.framework/Headers/CFBase.h:72:
/usr/local/include/Block.h:16:3: error: Never include this file directly. Use <lzma.h> instead.
#       error Never include this file directly. Use <lzma.h> instead.
        ^
1 error generated.

Compilation finished with exit code 2