build: golang.org/x/tools/cmd/signature-fuzzer/internal/fuzz-generator failures

[gopherbot]

#!watchflakes
default <- repo == "tools" && pkg == "" && test == "golang.org/x/tools/cmd/signature-fuzzer/internal/fuzz-generator"

Issue created automatically to collect these failures.

Example (log):

FAIL	golang.org/x/tools/cmd/signature-fuzzer/internal/fuzz-generator	720.023s

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- repo == "tools" && pkg == "" && test == "golang.org/x/tools/cmd/signature-fuzzer/internal/fuzz-generator"

2024-06-06 18:30 x_tools-gotip-plan9-arm tools@5e0f1d8d go@4b0dd556 golang.org/x/tools/cmd/signature-fuzzer/internal/fuzz-generator (log)

FAIL	golang.org/x/tools/cmd/signature-fuzzer/internal/fuzz-generator	720.023s

— watchflakes

[cherrymui]

Dup of #49338