Make Caller::new crate private

[Robbepop]

No description provided.

[paritytech-cicd-pr]

BENCHMARKS

	NATIVE			WASMTIME
BENCHMARK	MASTER	PR	DIFF	MASTER	PR	DIFF	WASMTIME OVERHEAD
execute/ count_until	887.71µs	888.16µs	⚪ 0.02%	2.36ms	2.36ms	⚪ 0.05%	🔴 166%
execute/ factorial_iterative	398.78ns	404.06ns	🔴 1.30%	993.67ns	992.87ns	⚪ 0.02%	🔴 146%
execute/ factorial_recursive	752.17ns	751.16ns	⚪ -0.32%	1.60µs	1.58µs	⚪ -1.08%	🔴 110%
execute/ fib_iterative	1.79ms	1.79ms	⚪ -0.04%	5.12ms	5.13ms	⚪ 0.16%	🔴 187%
execute/ fib_recursive	6.91ms	6.81ms	⚪ -2.25%	14.33ms	14.34ms	⚪ 0.07%	🔴 111%
execute/ global_bump	1.43ms	1.43ms	⚪ -0.19%	3.65ms	3.63ms	⚪ -0.32%	🔴 155%
execute/ host_calls	31.80µs	31.81µs	⚪ 0.05%	44.86µs	44.86µs	⚪ -0.01%	🟢 41%
execute/ memory_fill	1.53ms	1.53ms	⚪ -0.13%	4.33ms	4.33ms	⚪ -0.11%	🔴 182%
execute/ memory_sum	1.52ms	1.52ms	⚪ -0.20%	4.36ms	4.39ms	⚪ 0.81%	🔴 189%
execute/ memory_vec_add	3.07ms	3.03ms	🟢 -1.35%	8.96ms	8.96ms	⚪ 0.02%	🔴 196%
execute/ recursive_is_even	1.31ms	1.28ms	⚪ -1.57%	2.56ms	2.66ms	🔴 4.29%	🔴 107%
execute/ recursive_ok	173.17µs	172.82µs	⚪ -0.18%	358.29µs	359.01µs	⚪ 0.18%	🔴 108%
execute/ recursive_scan	209.59µs	209.23µs	⚪ -0.09%	463.63µs	465.44µs	⚪ 0.31%	🔴 122%
execute/ recursive_trap	17.32µs	17.17µs	⚪ -0.84%	36.06µs	35.84µs	⚪ -0.66%	🔴 109%
execute/ regex_redux	664.23µs	654.80µs	🟢 -1.73%	1.60ms	1.60ms	⚪ -0.09%	🔴 144%
execute/ rev_complement	585.73µs	586.37µs	⚪ 0.00%	1.55ms	1.55ms	⚪ 0.11%	🔴 165%
execute/ tiny_keccak	462.13µs	448.12µs	🟢 -3.01%	1.45ms	1.46ms	⚪ 0.32%	🔴 225%
execute/ trunc_f2i	1.08ms	1.07ms	⚪ -0.20%	2.74ms	2.75ms	⚪ 0.26%	🔴 156%
instantiate/ wasm_kernel	70.80µs	68.88µs	🟢 -3.09%	96.17µs	125.88µs	🔴 30.94%	🟡 83%
translate/ wasm_kernel	4.84ms	4.85ms	⚪ 0.02%	9.53ms	9.35ms	🟢 -1.75%	🟡 93%

Link to pipeline