-- $WORK/d2/src/p2/p2.go --
	package p2
	func F() {}
	-- $WORK/p2x.go --
	package p2
	func F() {}
	func G() {}

The bug is that the final phase installs p11 instead of p1. The test failure looks like:

	$ go test -run=Script
	--- FAIL: TestScript (3.75s)
	    --- FAIL: TestScript/install_rebuild_gopath (0.16s)
	        script_test.go:223:
	            # GOPATH with p1 in d2, p2 in d2 (0.000s)

	MOVD $0, R15 // Move SVC args into registers (entry point still in r0 from SVC 08)
	SVC_DELETE
	MOVD R2, R15 // Restore go stack pointer

error:
	MOVD $0, ret+8(FP) // Return 0 on failure

done:
	XOR R0, R0 // Reset r0 to 0
	RET

// func svcUnload(name *byte, fnptr unsafe.Pointer) int64
TEXT ·svcUnload(SB), NOSPLIT, $0
	MOVD R15, R2          // Save go stack pointer

		cname, srvs, err := LookupSRV(tt.service, tt.proto, tt.name)
		if err != nil {
			testenv.SkipFlakyNet(t)
			if attempts < len(backoffDuration) {
				dur := backoffDuration[attempts]
				t.Logf("backoff %v after failure %v\n", dur, err)
				time.Sleep(dur)
				attempts++
				i--
				continue
			}
			t.Fatal(err)
		}
		if len(srvs) == 0 {
			t.Error("got no record")
		}
		if !hasSuffixFold(cname, tt.cname) {

	// if there's already an idle cached connection available.
	GetConn func(hostPort string)

	// GotConn is called after a successful connection is
	// obtained. There is no hook for failure to obtain a
	// connection; instead, use the error from
	// Transport.RoundTrip.
	GotConn func(GotConnInfo)

	// PutIdleConn is called when the connection is returned to

// the manuals for the appropriate operating system.
//
// These calls return err == nil to indicate success; otherwise
// err represents an operating system error describing the failure and
// holds a value of type syscall.ErrorString.
package plan9 // import "golang.org/x/sys/plan9"

import (
	"bytes"
	"strings"
	"unsafe"
)

// ByteSliceFromString returns a NUL-terminated slice of bytes

	out, err := cmd.CombinedOutput()
	if exit == 1 {
		if err == nil {
			log.Fatal("stressExec: unexpected exec success")
		}
		return
	}
	if err != nil {
		log.Fatalf("stressExec: exec failure: %v: %s", err, out)
	}
	wantOutput += "\n"
	if string(out) != wantOutput {
		log.Fatalf("stressExec: exec output = %q; want %q", out, wantOutput)
	}
	Println("did exec")
}

func stressExec() {

// See [golang.org/x/tools/cmd/bisect] for details about using the tool.
//
// To be a bisect target, allowing bisect to help determine which of a set of independent
// changes provokes a failure, a program needs to:
//
//  1. Define a way to accept a change pattern on its command line or in its environment.
//     The most common mechanism is a command-line flag.

		stringslite.HasSuffix(err.Error(), "dns: resource does not exist; negrcode 0") ||
		stringslite.HasSuffix(err.Error(), "dns: resource does not exist; negrcode") ||
		stringslite.HasSuffix(err.Error(), "dns failure") {
		err = errNoSuchHost
	}
	return newDNSError(err, name, "")
}

// toLower returns a lower-case version of in. Restricting us to
// ASCII is sufficient to handle the IP protocol names and allow

// is tricky because we'd have to run updateExprType on the argument first.
// (go.dev/issue/21982.)

// convertibleTo reports whether T(x) is valid. In the failure case, *cause
// may be set to the cause for the failure.
// The check parameter may be nil if convertibleTo is invoked through an
// exported API call, i.e., when all methods have been type-checked.

					leaf = line.Function.Name
				}
			}
			// runtime.sigprof synthesizes call stacks when "normal traceback is
			// impossible or has failed", using particular placeholder functions
			// to represent common failure cases. Look for those functions in
			// the leaf position as a sign that the call stack and its
			// symbolization are more complex than this test can handle.
			//