h.Lock()
	defer h.Unlock()
	h.LastCheckFailure = reqStartTime
}

func (h *metrics) updateLastFullMinute(currReqMinute time.Time) {
	// Assumes the caller has h.Lock()'ed
	h.lastFullMinute = h.currentMinute
	h.currentMinute = serviceRTTMinuteStats{
		statsTime: currReqMinute,
	}
}

func (h *metrics) accumRequestRTT(reqStartTime time.Time, rttMs float64, isSuccess bool) {

   *     a
   *    /
   *   b   e <----> f
   *  / \ /
   * c   d
   * }
   */
  private static final SuccessorsFunction<Character> CYCLIC_GRAPH_CONTAINING_TREE =
      createDirectedGraph("ab", "bc", "bd", "ed", "ef", "fe");

  /**
   * A graph that is not a tree (for example, {@code h} is reachable from {@code f} via both {@code
   * e} and {@code g}) but is a valid input to {@link Traverser#forTree} when starting e.g. at node

        @Override
        public String toString() {
            return name;
        }

        public int value() {
            return value;
        }
    }

    /**
     * ED (Erase in Display) / EL (Erase in Line) parameter (see
     * <a href="https://en.wikipedia.org/wiki/ANSI_escape_code#CSI_sequences">CSI sequence J and K</a>)
     * @see Ansi#eraseScreen(Erase)
     * @see Ansi#eraseLine(Erase)

					t.Errorf("Test %d: read returns wrong file content", i)
				}
			}
		}
	}
}

// Test erasureDecode with random offset and lengths.
// This test is t.Skip()ed as it a long time to run, hence should be run
// explicitly after commenting out t.Skip()
func TestErasureDecodeRandomOffsetLength(t *testing.T) {
	if testing.Short() {
		t.Skip()
	}

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