Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
+ ruby -Ilib:spec -e 'Dir.glob "./spec/*spec.rb", &method(:require)'
Run options: --seed 53807
# Running:
.......................................................................................................F.........F..................
Finished in 7.228097s, 18.2621 runs/s, 29.0533 assertions/s.
  1) Failure:
Hitimes::TimedValueMetric#test_0008_calculates the stddev of the durations [spec/timed_value_metric_spec.rb:61]:
Expected |0.05 - 0.047793456202974996| (0.002206543797025007) to be <= 0.001.
  2) Failure:
Hitimes::TimedValueMetric#test_0017_can measure a block of code from an instance [spec/timed_value_metric_spec.rb:125]:
Expected |0.15 - 0.16569746200000002| (0.015697462000000023) to be <= 0.004.
132 runs, 210 assertions, 2 failures, 0 errors, 0 skips
Test failure. These tests measure time and comparing that the difference is in range.