Increase timeouts.

pkgs/compiler-test/tests/compiler/demodularizer/demod-test.rkt

@@ -74,3 +74,8 @@
                       (list "-e"
                             (path->string
                              (collection-file-path "pre-base.rkt" "racket/private")))))))
+
+
+(module+ test
+  (module config info
+    (define timeout 600)))

pkgs/racket-test-extra/tests/racket/many-places.rkt

@@ -8,3 +8,7 @@
   (map place-wait
        (for/list ([i 4])
          (dynamic-place ''#%kernel 'list))))
+
+(module+ test
+  (module config info
+    (define timeout 600)))

pkgs/racket-test/tests/racket/stress/log-receiver.rkt

@@ -2,7 +2,7 @@
 
 (module+ test
   (module config info
-    (define timeout 500)))
+    (define timeout 1000)))
 
 (define (do-thread t) (thread t))
 (set! do-thread do-thread)