build: build failure on x_telemetry-go1.25-linux-mips64le

```
#!watchflakes
default <- builder == "x_telemetry-go1.25-linux-mips64le" && repo == "telemetry" && mode == "build"
```

Issue created automatically to collect these failures.

Example ([log](https://ci.chromium.org/b/8690955201353891153)):

Use of LUCI is subject to the Google [Terms of Service](https://policies.google.com/terms) and [Privacy Policy](https://policies.google.com/privacy)

[I2026-02-03T13:37:43.059589+08:00 660388 0 sink.go:354] SinkServer: warm-up started
[I2026-02-03T13:37:43.059955+08:00 660388 0 sink.go:427] SinkServer: starting HTTP server...
[I2026-02-03T13:37:43.063653+08:00 660388 0 sink.go:359] SinkServer: warm-up ended
[I2026-02-03T13:37:43.064353+08:00 660388 0 cmd_stream.go:577] rdb-stream: starting the test command - ["/home/swarming/.swarming/w/ir/cache/tools/bin/result_adapter" "go" "-v=false" "-dump-json" "/home/swarming/.swarming/w/ir/x/w/go.testjson" "--" "/home/swarming/.swarming/w/ir/x/w/goroot/bin/go" "test" "-json" "-short" "./..."]
SIGSEGV: segmentation violation
PC=0x7bc18 m=10 sigcode=1 addr=0x1d0

goroutine 0 gp=0xc0002b7500 m=10 mp=0xc0006ab008 [idle]:
...
[W2026-02-03T13:38:30.263638+08:00 660388 0 cmd_stream.go:589] rdb-stream: test process exited with error: exit status 2
[I2026-02-03T13:38:30.264113+08:00 660388 0 cmd_stream.go:573] rdb-stream: the test process terminated
[I2026-02-03T13:38:30.265546+08:00 660388 0 sink.go:452] SinkServer: shutdown started
[I2026-02-03T13:38:30.265841+08:00 660388 0 sink.go:430] SinkServer: HTTP server stopped with "http: Server closed"
[I2026-02-03T13:38:30.265906+08:00 660388 0 sink_server.go:96] SinkServer: draining TestResult channel started
[I2026-02-03T13:38:30.266054+08:00 660388 0 sink_server.go:98] SinkServer: draining TestResult channel ended
[I2026-02-03T13:38:30.266108+08:00 660388 0 sink_server.go:100] SinkServer: draining Artifact channel started
[I2026-02-03T13:38:30.266406+08:00 660388 0 sink_server.go:102] SinkServer: draining Artifact channel ended
[I2026-02-03T13:38:30.266657+08:00 660388 0 sink.go:455] SinkServer: shutdown completed successfully
[I2026-02-03T13:38:30.266814+08:00 660388 0 cmd_stream.go:498] rdb-stream: exiting with 2

— [watchflakes](https://go.dev/wiki/Watchflakes)