env TESTGO_VERSION=go1.21 | |
env GOTOOLCHAIN=local | |
! go mod download rsc.io/future@v1.0.0 | |
stderr '^go: rsc.io/future@v1.0.0 requires go >= 1.999 \(running go 1.21; GOTOOLCHAIN=local\)$' | |
-- go.mod -- | |
module m | |
go 1.21 | |
-- x.go -- | |
package p | |
import "rsc.io/future/foo" |