Index: build/ci.go
--- build/ci.go.orig	2018-02-14 13:51:30.000000000 +0100
+++ build/ci.go	2018-02-14 20:51:42.322044000 +0100
@@ -202,6 +202,7 @@
 
 	if *arch == "" || *arch == runtime.GOARCH {
 		goinstall := goTool("install", buildFlags(env)...)
+		goinstall.Args = append(goinstall.Args, "-x")
 		goinstall.Args = append(goinstall.Args, "-v")
 		goinstall.Args = append(goinstall.Args, packages...)
 		build.MustRun(goinstall)
@@ -216,6 +217,7 @@
 	}
 	// Seems we are cross compiling, work around forbidden GOBIN
 	goinstall := goToolArch(*arch, *cc, "install", buildFlags(env)...)
+	goinstall.Args = append(goinstall.Args, "-x")
 	goinstall.Args = append(goinstall.Args, "-v")
 	goinstall.Args = append(goinstall.Args, []string{"-buildmode", "archive"}...)
 	goinstall.Args = append(goinstall.Args, packages...)
@@ -230,6 +232,7 @@
 			for name := range pkgs {
 				if name == "main" {
 					gobuild := goToolArch(*arch, *cc, "build", buildFlags(env)...)
+					gobuild.Args = append(gobuild.Args, "-x")
 					gobuild.Args = append(gobuild.Args, "-v")
 					gobuild.Args = append(gobuild.Args, []string{"-o", executablePath(cmd.Name())}...)
 					gobuild.Args = append(gobuild.Args, "."+string(filepath.Separator)+filepath.Join("cmd", cmd.Name()))