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

$ go1.15.15 version
go version go1.15.15 darwin/amd64

Does this issue reproduce with the latest release?

N/A

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

$ go1.15.15 env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/andrew/Library/Caches/go-build"
GOENV="/Users/andrew/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/andrew/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/andrew/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/Users/andrew/sdk/go1.15.15"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/andrew/sdk/go1.15.15/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/_w/xf7pz9xj08v6rqptdykvbcnm0000gn/T/go-build196002086=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

GO111MODULE=on go1.15.15 get github.com/zricethezav/gitleaks/v7

What did you expect to see?

The target package (github.com/zricethezav/gitleaks/v7) has a go.mod file that specifies minimum version go 1.16. (https://github.com/zricethezav/gitleaks/blob/master/go.mod)
Therefore, I expect to see a meaningful error like this:

Unable to get package. github.com/zricethezav/gitleaks/v7 requires minimum version [go1.16]. You are running [go1.15.15].

What did you see instead?

...
pkg/mod/github.com/zricethezav/gitleaks/v7@v7.6.1/config/config.go:4:2: package embed is not in GOROOT (/Users/andrew/sdk/go1.15.15/src/embed)

The error message is somewhat misleading. The command actually fails because embed did not exist before go1.16.

Instead, it seems to me the commands should fail immediately because the go version does not satisfy the minimum version specified in the package's go.mod file. It would be great to see something like this:

Unable to get package. github.com/zricethezav/gitleaks/v7 requires minimum version [go1.16]. You are running [go1.15.15].