Fix parsing error w/ RubyDev benchmark.

PiperOrigin-RevId: 531299491

test/benchmarks/fs/BUILD

@@ -40,5 +40,6 @@ benchmark_test(
         "//pkg/test/dockerutil",
         "//test/benchmarks/fs/fsbench",
         "//test/benchmarks/harness",
+        "//test/benchmarks/tools",
     ],
 )

test/benchmarks/fs/rubydev_test.go

@@ -26,6 +26,7 @@ import (
 
 	"gvisor.dev/gvisor/test/benchmarks/fs/fsbench"
 	"gvisor.dev/gvisor/test/benchmarks/harness"
+	"gvisor.dev/gvisor/test/benchmarks/tools"
 )
 
 func runRubyBenchmark(b *testing.B, bm fsbench.FSBenchmark, cleanupDirPatterns []string) {
@@ -76,7 +77,7 @@ func BenchmarkRubySpecTest(b *testing.B) {
 				b.Errorf("failed to extract load time from fastlane test suite output: %v", err)
 				return
 			}
-			b.ReportMetric(loadTime, "load-sec")
+			tools.ReportCustomMetric(b, loadTime, "load", "sec")
 		},
 	}, []string{
 		// Fastlane tests pollute the filesystem a lot.

test/benchmarks/tools/parser_util.go

@@ -31,7 +31,7 @@ type Parameter struct {
 // Output is parsed and split by these values. Make them illegal in input methods.
 // We are constrained on what characters these can be by 1) docker's allowable
 // container names, 2) golang allowable benchmark names, and 3) golangs allowable
-// charecters in b.ReportMetric calls.
+// characters in b.ReportMetric calls.
 var illegalChars = regexp.MustCompile(`[/\.]`)
 
 // ParametersToName joins parameters into a string format for parsing.