cd pkg/stanza
go test -bench=. ./...

--- FAIL: BenchmarkFromPdataConverter/worker_count=1
    frompdataconverter_test.go:153:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/frompdataconverter_test.go:153
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:219
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:245
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/runtime/asm_arm64.s:1223
                Error:          "[0x140ee047ec0]" should have 250000 item(s), but has 1
                Test:           BenchmarkFromPdataConverter/worker_count=1
--- FAIL: BenchmarkFromPdataConverter/worker_count=2
    frompdataconverter_test.go:153:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/frompdataconverter_test.go:153
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:219
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:245
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/runtime/asm_arm64.s:1223
                Error:          "[0x140ee047ec0]" should have 250000 item(s), but has 1
                Test:           BenchmarkFromPdataConverter/worker_count=2
--- FAIL: BenchmarkFromPdataConverter/worker_count=4
    frompdataconverter_test.go:153:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/frompdataconverter_test.go:153
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:219
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:245
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/runtime/asm_arm64.s:1223
                Error:          "[0x14003bac000]" should have 250000 item(s), but has 1
                Test:           BenchmarkFromPdataConverter/worker_count=4
--- FAIL: BenchmarkFromPdataConverter/worker_count=6
    frompdataconverter_test.go:153:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/frompdataconverter_test.go:153
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:219
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:245
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/runtime/asm_arm64.s:1223
                Error:          "[0x140ee047ec0]" should have 250000 item(s), but has 1
                Test:           BenchmarkFromPdataConverter/worker_count=6
--- FAIL: BenchmarkFromPdataConverter/worker_count=8
    frompdataconverter_test.go:153:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/frompdataconverter_test.go:153
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:219
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/testing/benchmark.go:245
                                                        /opt/homebrew/Cellar/go/1.24.4/libexec/src/runtime/asm_arm64.s:1223
                Error:          "[0x140ee047ec0]" should have 250000 item(s), but has 1
                Test:           BenchmarkFromPdataConverter/worker_count=8
--- FAIL: BenchmarkFromPdataConverter

...

--- FAIL: BenchmarkReadLine
    receiver_test.go:285:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/receiver_test.go:285
                Error:          Received unexpected error:
                                '' unsupported type 'file_input'
                Test:           BenchmarkReadLine
--- FAIL: BenchmarkParseAndMap
    receiver_test.go:369:
                Error Trace:    /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter/receiver_test.go:369
                Error:          Received unexpected error:
                                unsupported type 'file_input'
                Test:           BenchmarkParseAndMap


goleak: Errors on successful test run: found unexpected goroutines:
[Goroutine 28873209 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:171 +0x94
created by github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1 in goroutine 28872828
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:165 +0x60
 Goroutine 23815897 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:171 +0x94
created by github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1 in goroutine 23815515
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:165 +0x60
 Goroutine 26366477 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:171 +0x94
created by github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1 in goroutine 26356999
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:165 +0x60
 Goroutine 2567998 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:171 +0x94
created by github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1 in goroutine 2565493
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:165 +0x60
 Goroutine 24826320 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:171 +0x94
created by github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1 in goroutine 23816817
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:165 +0x60
 Goroutine 2566092 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:171 +0x94
created by github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1 in goroutine 2568291
        /Users/ray.kang/github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex/cache.go:165 +0x60
 Goroutine 20739796 in state select, with github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1 on top of the stack:
github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/parser/regex.(*atomicLimiter).init.func1.1()

(omitted as it is too long)