error: process didn't exit successfully

[Wowobot]

I keep getting this message

$ cargo run --release

Finished release [optimized] target(s) in 0.03s
 Running `target\release\apbf.exe`

Generating possible patterns...
Patterns to try: 1614

Pattern: 2-1-0-3
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Passphrase: '3214'
1 / 1614 [>----------------------------------------------] 0.06 % 49019.61/s 0s
thread 'main' panicked at 'failed to invoke decrypt command: Error { kind: NotFound, message: "program not found" }', src\main.rs:139:10
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
error: process didn't exit successfully: target\release\apbf.exe (exit code: 101)