cmd/go: TestScript/mod_pseudo_cache and TestScript/mod_invalid_version fail

[cherrymui]

2022-07-25T20:44:49-24dc27a/linux-amd64-longtest
2022-07-22T17:25:27-12e00f6/linux-amd64-longtest

go test proxy running at GOPROXY=http://127.0.0.1:44511/mod
--- FAIL: TestScript (0.01s)
    --- FAIL: TestScript/mod_pseudo_cache (10.17s)
        script_test.go:259: 
            # Regression test for golang.org/issue/27171: after resolving an older
            # pseudo-version of a commit, future resolution of that commit by hash should
            # choose the highest appropriate pseudo-version instead of the cached one. (10.171s)
            > go mod download -json golang.org/x/[email protected]
            [stdout]
            {
            	"Path": "golang.org/x/text",
            	"Version": "v0.0.0-20171215141712-a1b916ed6726",
            	"Error": "golang.org/x/[email protected]: unrecognized import path \"golang.org/x/text\": reading https://golang.org/x/text?go-get=1: 500 Internal Server Error"
            }
            [exit status 1]
            FAIL: testdata/script/mod_pseudo_cache.txt:12: unexpected command failure
            
FAIL
FAIL	cmd/go	168.289s

Possibly network flakiness on go.googlesource.com ?
cc @bcmills

[bcmills]

2022-07-25T20:44:49-24dc27a/linux-amd64-longtest

That looks like a bug in the go.googlesource.com server; possibly another symptom of #52490?

2022-07-22T17:25:27-12e00f6/linux-amd64-longtest

That exactly matches #52851.

[bcmills]

(Closing as a semi-duplicate of the aforementioned issues.)