Remove fatal/panic exits from diagnostic code

Author: owen-mc

go/extractor/diagnostics/diagnostics.go

@@ -98,7 +98,7 @@ func emitDiagnostic(sourceid, sourcename, markdownMessage string, severity diagn
 
 		targetFile, err := os.CreateTemp(diagnosticDir, "go-extractor.*.json")
 		if err != nil {
-			log.Println("Failed to create temporary file for diagnostic: ")
+			log.Println("Failed to create diagnostic file: ")
 			log.Println(err)
 		}
 		defer func() {
@@ -110,7 +110,8 @@ func emitDiagnostic(sourceid, sourcename, markdownMessage string, severity diagn
 
 		_, err = targetFile.Write(content)
 		if err != nil {
-			log.Fatal(err)
+			log.Println("Failed to write to diagnostic file: ")
+			log.Println(err)
 		}
 	}
 }

go/extractor/extractor.go

@@ -101,10 +101,8 @@ func ExtractWithFlags(buildFlags []string, patterns []string) error {
 
 		wd, err := os.Getwd()
 		if err != nil {
-			log.Fatalf("Unable to determine current directory: %s\n", err.Error())
-		}
-
-		if util.FindGoFiles(wd) {
+			log.Printf("Warning: failed to get working directory: %s\n", err.Error())
+		} else if util.FindGoFiles(wd) {
 			diagnostics.EmitGoFilesFoundButNotProcessed()
 		}
 	}