Panic during transform - no entry for key

[deevyansh]

Description

Panic during the capture function of the builtin.rs

Steps to Reproduce

1. The following code to be included in the main.rs

use jslt::Jslt;
use serde_json::json;
use std::fs;
fn main() -> Result<(), Box <dyn std::error::Error> > {
  let jslt: Jslt = r#"
  let val = "Hi_there"
let options = {
let option = capture($val, "^(?<key>[^_]+)_(?<val>.+)$")
$option.key : $option.val
}
$options
  "#.parse()?;
  let input = json!({
    "data": [
       [1, 2, 3, 4, 5],
       [6, 7, 8, 9, 10]
    ]
  });
  let output = jslt.transform_value(&input)?;
  println!("{}",output);
  assert_eq!("{\"Hi\":\"there\"}",output.to_string());
  Ok(())
}

Actual Output

thread 'main' panicked at jslt_dev/jslt/src/transform/value.rs:275:34: no entry found for key note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

Expected Output

{"Hi":"there"}

Environment

Nightly Rust Toolchain