[INFO] cloning repository https://github.com/shybyte/exercises-in-programming-style-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shybyte/exercises-in-programming-style-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshybyte%2Fexercises-in-programming-style-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshybyte%2Fexercises-in-programming-style-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeb1242d7416b4a4b163f9be2fdb4c19984f436f
[INFO] testing shybyte/exercises-in-programming-style-rust against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshybyte%2Fexercises-in-programming-style-rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shybyte/exercises-in-programming-style-rust on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shybyte/exercises-in-programming-style-rust
[INFO] finished tweaking git repo https://github.com/shybyte/exercises-in-programming-style-rust
[INFO] tweaked toml for git repo https://github.com/shybyte/exercises-in-programming-style-rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/shybyte/exercises-in-programming-style-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bfa9419461481c568e752eb60e8ac556bebdbf2deac8234fcc68cda4259bc4d
[INFO] running `Command { std: "docker" "start" "-a" "7bfa9419461481c568e752eb60e8ac556bebdbf2deac8234fcc68cda4259bc4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bfa9419461481c568e752eb60e8ac556bebdbf2deac8234fcc68cda4259bc4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bfa9419461481c568e752eb60e8ac556bebdbf2deac8234fcc68cda4259bc4d", kill_on_drop: false }`
[INFO] [stdout] 7bfa9419461481c568e752eb60e8ac556bebdbf2deac8234fcc68cda4259bc4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09557128bc157037cb1ee9353cb0fb91ec17c4998e2cc129f02c2417dadfa920
[INFO] running `Command { std: "docker" "start" "-a" "09557128bc157037cb1ee9353cb0fb91ec17c4998e2cc129f02c2417dadfa920", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises_in_programming_style_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     /// Takes a path to a file and assigns the entire
[INFO] [stdout] 17 | |     /// contents of the file to the global variable data
[INFO] [stdout]    | |________________________________________________________^
[INFO] [stdout] 18 | /     let read_file = |filename: &str| {
[INFO] [stdout] 19 | |         let mut text = String::new();
[INFO] [stdout] 20 | |         File::open(filename).unwrap().read_to_string(&mut text).unwrap();
[INFO] [stdout] 21 | |         data.borrow_mut().append(&mut text.chars().collect());
[INFO] [stdout] 22 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |       /// Replaces all nonalphanumeric chars in data with white space
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 | /     let filter_chars_and_normalize = || {
[INFO] [stdout] 27 | |         for c in data.borrow_mut().iter_mut() {
[INFO] [stdout] 28 | |             if !c.is_alphanumeric() {
[INFO] [stdout] 29 | |                 *c = ' ';
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |         }
[INFO] [stdout] 34 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |       /// Scans data for words, filling the global variable words
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 37 | /     let scan = || {
[INFO] [stdout] 38 | |         let data_str: String = data.borrow().iter().collect();
[INFO] [stdout] 39 | |         words.borrow_mut().append(&mut data_str.split(' ').map(|s| s.to_string()).filter(|s| !s.is_empty()).collect());
[INFO] [stdout] 40 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |       /// Scans data for words, filling the global variable words
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 43 | /     let remove_stop_words = || {
[INFO] [stdout] 44 | |         let mut stop_words: HashSet<String> = BufReader::new(File::open("test-data/stop_words.txt").unwrap())
[INFO] [stdout] 45 | |             .split(b',').map(|b| String::from_utf8_lossy(&b.unwrap()).into()).collect();
[INFO] [stdout] 46 | |         for ascii_lowercase in b'a'..b'z' { stop_words.insert((ascii_lowercase as char).to_string()); }
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |         }
[INFO] [stdout] 59 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |       /// Creates a list of pairs associating words with frequencies
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 62 | /     let frequencies = || {
[INFO] [stdout] 63 | |         let mut word_freqs_mut = word_freqs.borrow_mut();
[INFO] [stdout] 64 | |         for w in words.borrow().iter() {
[INFO] [stdout] 65 | |             if let Some(index) = word_freqs_mut.iter().position(|pair| &pair.0 == w) {
[INFO] [stdout] ...  |
[INFO] [stdout] 70 | |         }
[INFO] [stdout] 71 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |       /// Sorts word_freqs by frequency
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 74 | /     let sort = || {
[INFO] [stdout] 75 | |         word_freqs.borrow_mut().sort_by_key(|p| 0 - p.1);
[INFO] [stdout] 76 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "09557128bc157037cb1ee9353cb0fb91ec17c4998e2cc129f02c2417dadfa920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09557128bc157037cb1ee9353cb0fb91ec17c4998e2cc129f02c2417dadfa920", kill_on_drop: false }`
[INFO] [stdout] 09557128bc157037cb1ee9353cb0fb91ec17c4998e2cc129f02c2417dadfa920
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cce11ca941e06e72ad92dc4223a5feb498257cef5437d417694965b94ce424f3
[INFO] running `Command { std: "docker" "start" "-a" "cce11ca941e06e72ad92dc4223a5feb498257cef5437d417694965b94ce424f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises_in_programming_style_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     /// Takes a path to a file and assigns the entire
[INFO] [stdout] 17 | |     /// contents of the file to the global variable data
[INFO] [stdout]    | |________________________________________________________^
[INFO] [stdout] 18 | /     let read_file = |filename: &str| {
[INFO] [stdout] 19 | |         let mut text = String::new();
[INFO] [stdout] 20 | |         File::open(filename).unwrap().read_to_string(&mut text).unwrap();
[INFO] [stdout] 21 | |         data.borrow_mut().append(&mut text.chars().collect());
[INFO] [stdout] 22 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |       /// Replaces all nonalphanumeric chars in data with white space
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 | /     let filter_chars_and_normalize = || {
[INFO] [stdout] 27 | |         for c in data.borrow_mut().iter_mut() {
[INFO] [stdout] 28 | |             if !c.is_alphanumeric() {
[INFO] [stdout] 29 | |                 *c = ' ';
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |         }
[INFO] [stdout] 34 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |       /// Scans data for words, filling the global variable words
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 37 | /     let scan = || {
[INFO] [stdout] 38 | |         let data_str: String = data.borrow().iter().collect();
[INFO] [stdout] 39 | |         words.borrow_mut().append(&mut data_str.split(' ').map(|s| s.to_string()).filter(|s| !s.is_empty()).collect());
[INFO] [stdout] 40 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |       /// Scans data for words, filling the global variable words
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 43 | /     let remove_stop_words = || {
[INFO] [stdout] 44 | |         let mut stop_words: HashSet<String> = BufReader::new(File::open("test-data/stop_words.txt").unwrap())
[INFO] [stdout] 45 | |             .split(b',').map(|b| String::from_utf8_lossy(&b.unwrap()).into()).collect();
[INFO] [stdout] 46 | |         for ascii_lowercase in b'a'..b'z' { stop_words.insert((ascii_lowercase as char).to_string()); }
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |         }
[INFO] [stdout] 59 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |       /// Creates a list of pairs associating words with frequencies
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 62 | /     let frequencies = || {
[INFO] [stdout] 63 | |         let mut word_freqs_mut = word_freqs.borrow_mut();
[INFO] [stdout] 64 | |         for w in words.borrow().iter() {
[INFO] [stdout] 65 | |             if let Some(index) = word_freqs_mut.iter().position(|pair| &pair.0 == w) {
[INFO] [stdout] ...  |
[INFO] [stdout] 70 | |         }
[INFO] [stdout] 71 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/bin/04-cookbook.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |       /// Sorts word_freqs by frequency
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 74 | /     let sort = || {
[INFO] [stdout] 75 | |         word_freqs.borrow_mut().sort_by_key(|p| 0 - p.1);
[INFO] [stdout] 76 | |     };
[INFO] [stdout]    | |______- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] [stderr]   Executable unittests src/bin/03-monolith.rs (/opt/rustwide/target/debug/deps/03_monolith-f870cddbe3b62682)
[INFO] [stderr]   Executable unittests src/bin/04-cookbook.rs (/opt/rustwide/target/debug/deps/04_cookbook-f50235bf78fb6d77)
[INFO] [stderr]   Executable unittests src/bin/05-pipeline.rs (/opt/rustwide/target/debug/deps/05_pipeline-f533e87536b64825)
[INFO] [stderr]   Executable unittests src/bin/06-code-golf.rs (/opt/rustwide/target/debug/deps/06_code_golf-17d0e251b71969cf)
[INFO] [stderr]   Executable unittests src/bin/07-infinite-mirror.rs (/opt/rustwide/target/debug/deps/07_infinite_mirror-b630ec849c1c139e)
[INFO] [stderr]   Executable unittests src/bin/09-the-one.rs (/opt/rustwide/target/debug/deps/09_the_one-0a02260ee898dd1b)
[INFO] [stderr]   Executable unittests src/bin/10-things.rs (/opt/rustwide/target/debug/deps/10_things-cc0f59d246268f46)
[INFO] [stderr]   Executable unittests src/bin/42-rusty.rs (/opt/rustwide/target/debug/deps/42_rusty-66c1964ef3d87a40)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/exercises_in_programming_style_rust-4df5dc74126071af)
[INFO] running `Command { std: "docker" "inspect" "cce11ca941e06e72ad92dc4223a5feb498257cef5437d417694965b94ce424f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cce11ca941e06e72ad92dc4223a5feb498257cef5437d417694965b94ce424f3", kill_on_drop: false }`
[INFO] [stdout] cce11ca941e06e72ad92dc4223a5feb498257cef5437d417694965b94ce424f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cfc64f9b7b15c3ef5ebd9ab44ce6b25c0daea20e2c6677d721969d471c978f8b
[INFO] running `Command { std: "docker" "start" "-a" "cfc64f9b7b15c3ef5ebd9ab44ce6b25c0daea20e2c6677d721969d471c978f8b", kill_on_drop: false }`
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/04-cookbook.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     /// Takes a path to a file and assigns the entire
[INFO] [stderr] 17 | |     /// contents of the file to the global variable data
[INFO] [stderr]    | |________________________________________________________^
[INFO] [stderr] 18 | /     let read_file = |filename: &str| {
[INFO] [stderr] 19 | |         let mut text = String::new();
[INFO] [stderr] 20 | |         File::open(filename).unwrap().read_to_string(&mut text).unwrap();
[INFO] [stderr] 21 | |         data.borrow_mut().append(&mut text.chars().collect());
[INFO] [stderr] 22 | |     };
[INFO] [stderr]    | |______- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/04-cookbook.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |       /// Replaces all nonalphanumeric chars in data with white space
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 26 | /     let filter_chars_and_normalize = || {
[INFO] [stderr] 27 | |         for c in data.borrow_mut().iter_mut() {
[INFO] [stderr] 28 | |             if !c.is_alphanumeric() {
[INFO] [stderr] 29 | |                 *c = ' ';
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     };
[INFO] [stderr]    | |______- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/04-cookbook.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |       /// Scans data for words, filling the global variable words
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 37 | /     let scan = || {
[INFO] [stderr] 38 | |         let data_str: String = data.borrow().iter().collect();
[INFO] [stderr] 39 | |         words.borrow_mut().append(&mut data_str.split(' ').map(|s| s.to_string()).filter(|s| !s.is_empty()).collect());
[INFO] [stderr] 40 | |     };
[INFO] [stderr]    | |______- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/04-cookbook.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |       /// Scans data for words, filling the global variable words
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 43 | /     let remove_stop_words = || {
[INFO] [stderr] 44 | |         let mut stop_words: HashSet<String> = BufReader::new(File::open("test-data/stop_words.txt").unwrap())
[INFO] [stderr] 45 | |             .split(b',').map(|b| String::from_utf8_lossy(&b.unwrap()).into()).collect();
[INFO] [stderr] 46 | |         for ascii_lowercase in b'a'..b'z' { stop_words.insert((ascii_lowercase as char).to_string()); }
[INFO] [stderr] ...  |
[INFO] [stderr] 58 | |         }
[INFO] [stderr] 59 | |     };
[INFO] [stderr]    | |______- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/04-cookbook.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |       /// Creates a list of pairs associating words with frequencies
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 62 | /     let frequencies = || {
[INFO] [stderr] 63 | |         let mut word_freqs_mut = word_freqs.borrow_mut();
[INFO] [stderr] 64 | |         for w in words.borrow().iter() {
[INFO] [stderr] 65 | |             if let Some(index) = word_freqs_mut.iter().position(|pair| &pair.0 == w) {
[INFO] [stderr] ...  |
[INFO] [stderr] 70 | |         }
[INFO] [stderr] 71 | |     };
[INFO] [stderr]    | |______- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/04-cookbook.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |       /// Sorts word_freqs by frequency
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 74 | /     let sort = || {
[INFO] [stderr] 75 | |         word_freqs.borrow_mut().sort_by_key(|p| 0 - p.1);
[INFO] [stderr] 76 | |     };
[INFO] [stderr]    | |______- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: `exercises_in_programming_style_rust` (bin "04-cookbook" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/bin/03-monolith.rs (/opt/rustwide/target/debug/deps/03_monolith-f870cddbe3b62682)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/04-cookbook.rs (/opt/rustwide/target/debug/deps/04_cookbook-f50235bf78fb6d77)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/05-pipeline.rs (/opt/rustwide/target/debug/deps/05_pipeline-f533e87536b64825)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/06-code-golf.rs (/opt/rustwide/target/debug/deps/06_code_golf-17d0e251b71969cf)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/07-infinite-mirror.rs (/opt/rustwide/target/debug/deps/07_infinite_mirror-b630ec849c1c139e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/09-the-one.rs (/opt/rustwide/target/debug/deps/09_the_one-0a02260ee898dd1b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/10-things.rs (/opt/rustwide/target/debug/deps/10_things-cc0f59d246268f46)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/42-rusty.rs (/opt/rustwide/target/debug/deps/42_rusty-66c1964ef3d87a40)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/exercises_in_programming_style_rust-4df5dc74126071af)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cfc64f9b7b15c3ef5ebd9ab44ce6b25c0daea20e2c6677d721969d471c978f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc64f9b7b15c3ef5ebd9ab44ce6b25c0daea20e2c6677d721969d471c978f8b", kill_on_drop: false }`
[INFO] [stdout] cfc64f9b7b15c3ef5ebd9ab44ce6b25c0daea20e2c6677d721969d471c978f8b