avoid cost overflow and fix principal cost

[github-actions[bot]]

Name	Max Mem (Kb)	Encode	Decode
blob	4_224	20_464_304	12_084_211 ($\textcolor{red}{0.00\%}$)
btreemap	75_456	4_814_047_377	15_380_666_950 ($\textcolor{red}{0.05\%}$)
nns	192	2_277_022	14_343_066 ($\textcolor{red}{0.02\%}$)
option_list	576	7_311_075 ($\textcolor{red}{0.00\%}$)	33_844_365 ($\textcolor{red}{0.04\%}$)
text	6_336	28_847_669	17_839_902 ($\textcolor{red}{0.00\%}$)
variant_list	128	7_518_696	25_484_826 ($\textcolor{red}{0.07\%}$)
vec_int16	16_704	168_590_973	1_031_830_176 ($\textcolor{red}{0.41\%}$)

• Parser cost: 18_351_038
• Extra args: 3_353_135 ($\textcolor{red}{0.00\%}$)
  Click to see raw report

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Benchmark: blob
  total:
    instructions: 32.55 M (0.00%) (change within noise threshold)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 20.46 M (no change)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 12.08 M (0.00%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

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Benchmark: text
  total:
    instructions: 46.69 M (0.00%) (change within noise threshold)
    heap_increase: 99 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 28.85 M (no change)
    heap_increase: 99 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 17.84 M (0.00%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

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Benchmark: vec_int16
  total:
    instructions: 1.20 B (0.35%) (change within noise threshold)
    heap_increase: 261 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 168.59 M (no change)
    heap_increase: 261 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 1.03 B (0.41%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

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Benchmark: btreemap
  total:
    instructions: 20.19 B (0.04%) (change within noise threshold)
    heap_increase: 1179 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 4.81 B (no change)
    heap_increase: 257 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 15.38 B (0.05%) (change within noise threshold)
    heap_increase: 922 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: option_list
  total:
    instructions: 41.16 M (0.03%) (change within noise threshold)
    heap_increase: 9 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 7.31 M (0.00%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 33.84 M (0.04%) (change within noise threshold)
    heap_increase: 9 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: variant_list
  total:
    instructions: 33.01 M (0.06%) (change within noise threshold)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 7.52 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 25.48 M (0.07%) (change within noise threshold)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: nns
  total:
    instructions: 35.72 M (0.01%) (change within noise threshold)
    heap_increase: 3 pages (no change)
    stable_memory_increase: 0 pages (no change)

  0. Parsing (scope):
    instructions: 18.35 M (no change)
    heap_increase: 3 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 2.28 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 14.34 M (0.02%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: extra_args
  total:
    instructions: 3.35 M (0.00%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

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Successfully persisted results to canbench_results.yml