Added error log

resolver-go/internal/closure/cache.go

@@ -3,6 +3,7 @@ package closure
 import (
 	"context"
 	"errors"
+	"log"
 	"time"
 )
 
@@ -77,6 +78,7 @@ func (c *CompileCache) worker() {
 			c.results[job.Hash] = out
 			delete(c.errors, job.Hash)
 		} else {
+			log.Printf("compile failed: %v", err)
 			c.states[job.Hash] = CompileFailed
 			c.errors[job.Hash] = err
 		}