windows endless.go:64:11: undefined: syscall.SIGUSR1

[fmyxyz]

PS C:\Users\xxx\Workspace\xxx-xxx> go env
set GO111MODULE=
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\xxx\AppData\Local\go-build
set GOENV=C:\Users\xxx\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\xxx\go\pkg\mod
set GONOPROXY=.corp.example.com
set GONOSUMDB=.corp.example.com
set GOOS=windows
set GOPATH=C:\Users\xxx\go
set GOPRIVATE=*.corp.example.com
set GOPROXY=https://proxy.golang.com.cn,direct
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.18.1
set GCCGO=gccgo
set GOAMD64=v1
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=C:\Users\xxx\Workspace\xxx-xxx\go.mod
set GOWORK=
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=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\xxx\AppData\Local\Temp\go-build219240513=/tmp/go-build -gno-record-gcc-switches

[FatalReadError]

This repo hasn't been updated since 2016 with 13 outstanding pull requests, so unfortunately this issue is unlikely to be resolved. Perhaps you could look at other Golang graceful restarts libraries, or just remove the offending signal(s) from that list (if that's the only issue).