[pkg-go] Bug#918619: golang-github-go-errors-errors FTBFS with Go 1.11

[Adrian Bunk]

Source: golang-github-go-errors-errors
Version: 1.0.1-1
Severity: serious
Tags: ftbfs

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/golang-github-go-errors-errors.html

...
=== RUN   TestStackFormat
--- FAIL: TestStackFormat (0.00s)
    error_test.go:33: Stack trace does not contain source line: 'a: b(5)'
    error_test.go:34: /build/1st/golang-github-go-errors-errors-1.0.1/obj-x86_64-linux-gnu/src/github.com/go-errors/errors/error_test.go:21 (0x4f5f35)
        	TestStackFormat.func1: e, expected := Errorf("hi"), callers()
        /usr/lib/go-1.11/src/runtime/asm_amd64.s:522 (0x455b3b)
        	call32: CALLFN(·call32, 32)
        /usr/lib/go-1.11/src/runtime/panic.go:513 (0x429df9)
        	gopanic: reflectcall(nil, unsafe.Pointer(d.fn), deferArgs(d), uint32(d.siz), uint32(d.siz))
        /build/1st/golang-github-go-errors-errors-1.0.1/obj-x86_64-linux-gnu/src/github.com/go-errors/errors/error_test.go:245 (0x4f38ff)
        	TestStackFormat: panic('a')
        /usr/lib/go-1.11/src/testing/testing.go:827 (0x4b573f)
        	tRunner: fn(t)
        /usr/lib/go-1.11/src/runtime/asm_amd64.s:1333 (0x4576d1)
        	goexit: BYTE	$0x90	// NOP
...