diff --git a/src/cmd/go/internal/envcmd/env.go b/src/cmd/go/internal/envcmd/env.go
index 403e0f4a7b..7bd75f7305 100644
--- a/src/cmd/go/internal/envcmd/env.go
+++ b/src/cmd/go/internal/envcmd/env.go
@@ -63,9 +63,6 @@ var (
 )
 
 func MkEnv() []cfg.EnvVar {
-	var b work.Builder
-	b.Init()
-
 	envFile, _ := cfg.EnvFile()
 	env := []cfg.EnvVar{
 		{Name: "GO111MODULE", Value: cfg.Getenv("GO111MODULE")},
diff --git a/src/cmd/go/testdata/script/build_GOTMPDIR.txt b/src/cmd/go/testdata/script/build_GOTMPDIR.txt
index c93ca932ca..1073517c29 100644
--- a/src/cmd/go/testdata/script/build_GOTMPDIR.txt
+++ b/src/cmd/go/testdata/script/build_GOTMPDIR.txt
@@ -1,15 +1,50 @@
-env GO111MODULE=off
-[short] skip
-
 # Set GOCACHE to a clean directory to ensure that 'go build' has work to report.
-env GOCACHE=$WORK/gocache
+[!windows] env GOCACHE=$WORK/gocache
+[windows] env GOCACHE=$WORK\gocache
 
-# Build should use GOTMPDIR if set.
-env GOTMPDIR=$WORK/my-favorite-tmpdir
+# 'go build' should use GOTMPDIR if set.
+[!windows] env GOTMPDIR=$WORK/my-favorite-tmpdir
+[windows] env GOTMPDIR=$WORK\my-favorite-tmpdir
 mkdir $GOTMPDIR
-go build -work hello.go
+go build -x hello.go
 stderr ^WORK=.*my-favorite-tmpdir
 
+# Make GOTMPDIR a regular file. This prevents the creation of work directories,
+# so we can check that certain commands don't create them.
+# This simulates running on a full disk or a read-only volume.
+rm $GOTMPDIR
+cp hello.go $GOTMPDIR # any file will do
+
+# 'go build' should fail if GOTMPDIR is read-only.
+! go build -x .
+stderr '^go: creating work dir: \w+ '$GOTMPDIR
+
+# 'go list' should only fail if it needs to build something.
+go list -x .
+! stderr 'creating work dir'
+stdout m
+go list -m all
+stdout m
+! go list -x -export .
+stderr '^go: creating work dir: \w+ '$GOTMPDIR
+
+# 'go clean -cache' and 'go clean -modcache' should not fail.
+go clean -x -cache
+! stderr 'creating work dir'
+go clean -x -modcache
+! stderr 'creating work dir'
+
+# 'go env' should not fail for specific variables.
+# Without arguments, it needs to initialize a builder to load cgo flags, and
+# that uses a temporary directory.
+! go env
+stderr '^go: creating work dir: \w+ '$GOTMPDIR
+go env GOROOT
+
+-- go.mod --
+module m
+
+go 1.15
 -- hello.go --
 package main
 func main() { println("hello") }