What version of Go are you using (go version)?

$ go version
go version devel +280c735b07 Fri Mar 5 16:02:44 2021 +0000 windows/arm64

Does this issue reproduce with the latest release?

N/A, cloned from master (280c735)

What operating system and processor architecture are you using (go env)?

$ go env
C:\Users\u\code\go\src>..\bin\go env

set GO111MODULE=

set GOARCH=arm64

set GOBIN=

set GOCACHE=C:\Users\u\AppData\Local\go-build

set GOENV=C:\Users\u\AppData\Roaming\go\env

set GOEXE=.exe

set GOFLAGS=

set GOHOSTARCH=arm64

set GOHOSTOS=windows

set GOINSECURE=

set GOMODCACHE=C:\Users\u\go\pkg\mod

set GONOPROXY=

set GONOSUMDB=

set GOOS=windows

set GOPATH=C:\Users\u\go

set GOPRIVATE=

set GOPROXY=https://proxy.golang.org,direct

set GOROOT=C:\Users\u\code\go

set GOSUMDB=sum.golang.org

set GOTMPDIR=

set GOTOOLDIR=C:\Users\u\code\go\pkg\tool\windows_arm64

set GOVCS=

set GOVERSION=devel +280c735b07 Fri Mar 5 16:02:44 2021 +0000

set GCCGO=gccgo

set AR=ar

set CC=gcc

set CXX=g++

set CGO_ENABLED=0

set GOMOD=C:\Users\u\code\go\src\go.mod

set CGO_CFLAGS=-g -O2

set CGO_CPPFLAGS=

set CGO_CXXFLAGS=-g -O2

set CGO_FFLAGS=-g -O2

set CGO_LDFLAGS=-g -O2

set PKG_CONFIG=pkg-config

set GOGCCFLAGS=-fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\u\AppData\Local\Temp\go-build4225962944=/tmp/go-build -gno-record-gcc-switches

What did you do?

Trying to build Windows arm64 go on a Surface Pro X.
Cloned latest go source, ran src\all.bat with a bootstrapped version of go cross compiled from my macbook and copied over. First run I hit a test failure of:

##### GOMAXPROCS=2 runtime -cpu=1,2,4 -quick
--- FAIL: TestGcLastTime (0.00s)
    gc_test.go:126: bad last GC time: got 1614963630000702600, want [1614963630099702800, 1614963630000702600]
FAIL
FAIL    runtime 21.884s
FAIL
2021/03/05 09:00:48 Failed: exit status 1

Running again I hit a different test failure:

--- FAIL: TestClientCallsCloseOnlyOnce (21.49s)
    client_test.go:2048: dial tcp 127.0.0.1:57933: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
FAIL
FAIL    net/http        22.909s

On the third run everything passed successfully, and I appear to have a working go build.