$ cargo test
   Compiling minigrep v0.1.0 (file:///projects/minigrep)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.97s
     Running unittests src/lib.rs (target/debug/deps/minigrep-9cd200e5fac0fc94)

running 1 test
test tests::one_result ... FAILED

failures:

---- tests::one_result stdout ----

thread 'tests::one_result' panicked at src/lib.rs:17:9:
assertion `left == right` failed
  left: ["safe, fast, productive."]
 right: []
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace


failures:
    tests::one_result

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

error: test failed, to rerun pass `--lib`
