[INFO] updating cached repository https://github.com/haihuxia/rust-hello
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2a9a5f551d01cd882063730fbb2e7418c1031651
[INFO] testing haihuxia/rust-hello against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaihuxia%2Frust-hello" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/haihuxia/rust-hello on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/haihuxia/rust-hello
[INFO] finished tweaking git repo https://github.com/haihuxia/rust-hello
[INFO] tweaked toml for git repo https://github.com/haihuxia/rust-hello written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/haihuxia/rust-hello already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bebc7cee27fc3e1de70ed0d4786c7ae8a3d7335c6a693bd439e23a59a5153035
[INFO] running `"docker" "start" "-a" "bebc7cee27fc3e1de70ed0d4786c7ae8a3d7335c6a693bd439e23a59a5153035"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rust-hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:134:31
[INFO] [stderr]     |
[INFO] [stderr] 134 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let hello = &s[0..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let hello = &s[0..=4];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let hello = &s[..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let world = &s[6..11];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let world = &s[6..=10];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let world = &s[6..len];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let world = &s[6..];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let hello_world = &s[0..len];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let hello_world = &s[..];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/structs.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let user2 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user3`
[INFO] [stderr]   --> src/structs.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let user3 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/structs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/structs.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let origin = Point(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enums.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let four = IpAddKind::V4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enums.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let six = IpAddKind::V6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let loopback = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let home = IpAddr::V4(String::from("127.0.0.1"));
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/matchs.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let six = plus_one(five);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/matchs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let none = plus_one(None);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |         _ => count += 1,
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         count += 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/vectors.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let v: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/vectors.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let a = vec![1, 2, 3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/vectors.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let six = &b[1];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/vectors.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let row = vec![
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = data.to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s = "initial content".to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let s = String::from("initial content");
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/strings.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let s = format!("{}-{}-{}", s1, s2, s3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/hashmaps.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let s: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/hashmaps.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let score = scores.get(&team_name);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flot`
[INFO] [stderr]   --> src/gennic.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let flot = PointA { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_flot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_integer`
[INFO] [stderr]   --> src/gennic.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let both_integer = PointB { x: 5, y: 10 };
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_float`
[INFO] [stderr]   --> src/gennic.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let both_float = PointB { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `integer_and_float`
[INFO] [stderr]   --> src/gennic.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let integer_and_float = PointB { x: 5, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/traits.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn notyfy<T: Summary>(item1: T, item2: T) {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:24:62
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:24:68
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/lifetimes.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/boxpoints.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let list = Cons(1,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/oop.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first`
[INFO] [stderr]  --> src/slices.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn first() {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_a`
[INFO] [stderr]   --> src/slices.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn first_word_a(s: &String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_b`
[INFO] [stderr]   --> src/slices.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn first_word_b(s: &str) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/structs.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct User {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/structs.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/structs.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]   --> src/structs.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn build_user(username: String, email: String) -> User {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_a`
[INFO] [stderr]   --> src/structs.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn area_a(width: u32, height: u32) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_b`
[INFO] [stderr]   --> src/structs.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn area_b(dimensions: (u32, u32)) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]   --> src/structs.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/structs.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `square`
[INFO] [stderr]   --> src/structs.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_c`
[INFO] [stderr]   --> src/structs.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn area_c(rectangle: &Rectangle) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/enums.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/enums.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/enums.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]   --> src/matchs.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/matchs.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/matchs.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/matchs.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/iflet.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/iflet.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn b(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/iflet.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn c(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]  --> src/modules.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |         pub fn clarinet() {
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `breathe_in`
[INFO] [stderr]  --> src/modules.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn breathe_in() {}
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]   --> src/modules.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 pub fn clarinet() {}
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/modules.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Vegetable`
[INFO] [stderr]   --> src/modules.rs:56:16
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub struct Vegetable {
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/modules.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         pub fn new(name: &str) -> Vegetable {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/vectors.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/vectors.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/vectors.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/vectors.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn d() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/strings.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/strings.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/strings.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/hashmaps.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/hashmaps.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/errors.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/errors.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_a`
[INFO] [stderr]   --> src/errors.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn read_username_from_file_a() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_b`
[INFO] [stderr]   --> src/errors.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn read_username_from_file_b() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_c`
[INFO] [stderr]   --> src/errors.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn read_username_from_file_c() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointA`
[INFO] [stderr]  --> src/gennic.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PointA<T> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]  --> src/gennic.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn x(&self) -> &T {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance_from_origin`
[INFO] [stderr]   --> src/gennic.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointB`
[INFO] [stderr]   --> src/gennic.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct PointB<T, U> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mixup`
[INFO] [stderr]   --> src/gennic.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn mixup<V, W>(self, other: PointB<V, W>) -> PointB<T, W> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/gennic.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/gennic.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_b`
[INFO] [stderr]   --> src/traits.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest`
[INFO] [stderr]   --> src/lifetimes.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/lifetimes.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]  --> src/iterators.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/iterators.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn new() -> Counter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/iterators.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/boxpoints.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/boxpoints.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/boxpoints.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/deref.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/deref.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/deref.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new(x: T) -> MyBox<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/rc.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/refcell.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]   --> src/refcell.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Nil,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]  --> src/weak.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]  --> src/weak.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Nil,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]   --> src/weak.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn tail(&self) -> Option<&RefCell<Rc<List>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_a`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn new_a(args: &[String]) -> Config {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_config_a`
[INFO] [stderr]    --> src/lib.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn parse_config_a(args: &[String]) -> (&str, &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `search_a`
[INFO] [stderr]    --> src/lib.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn search_a<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 129 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chapter12`
[INFO] [stderr]   --> src/main.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn chapter12() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chapter13`
[INFO] [stderr]   --> src/main.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn chapter13() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_a`
[INFO] [stderr]    --> src/main.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn generate_workout_a(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_b`
[INFO] [stderr]    --> src/main.rs:117:4
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn generate_workout_b(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_c`
[INFO] [stderr]    --> src/main.rs:132:4
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn generate_workout_c(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]    --> src/main.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]    --> src/main.rs:163:4
[INFO] [stderr]     |
[INFO] [stderr] 163 | fn a() {
[INFO] [stderr]     |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guess_game`
[INFO] [stderr]    --> src/main.rs:168:4
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn guess_game() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]    --> src/main.rs:199:16
[INFO] [stderr]     |
[INFO] [stderr] 199 |         pub fn clarinet() {
[INFO] [stderr]     |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet_trio`
[INFO] [stderr]    --> src/main.rs:208:12
[INFO] [stderr]     |
[INFO] [stderr] 208 |     pub fn clarinet_trio() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `"docker" "inspect" "bebc7cee27fc3e1de70ed0d4786c7ae8a3d7335c6a693bd439e23a59a5153035"`
[INFO] running `"docker" "rm" "-f" "bebc7cee27fc3e1de70ed0d4786c7ae8a3d7335c6a693bd439e23a59a5153035"`
[INFO] [stdout] bebc7cee27fc3e1de70ed0d4786c7ae8a3d7335c6a693bd439e23a59a5153035
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a893feb901c9dd4720473383a8bd82a417592b3313c596e34ac6df4d646d57bf
[INFO] running `"docker" "start" "-a" "a893feb901c9dd4720473383a8bd82a417592b3313c596e34ac6df4d646d57bf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:134:31
[INFO] [stderr]     |
[INFO] [stderr] 134 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let hello = &s[0..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let hello = &s[0..=4];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let hello = &s[..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let world = &s[6..11];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let world = &s[6..=10];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let world = &s[6..len];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let world = &s[6..];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let hello_world = &s[0..len];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let hello_world = &s[..];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/structs.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let user2 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user3`
[INFO] [stderr]   --> src/structs.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let user3 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/structs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/structs.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let origin = Point(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enums.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let four = IpAddKind::V4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enums.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let six = IpAddKind::V6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let loopback = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let home = IpAddr::V4(String::from("127.0.0.1"));
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/matchs.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let six = plus_one(five);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/matchs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let none = plus_one(None);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |         _ => count += 1,
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         count += 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/vectors.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let v: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/vectors.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let a = vec![1, 2, 3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/vectors.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let six = &b[1];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/vectors.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let row = vec![
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = data.to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s = "initial content".to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let s = String::from("initial content");
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/strings.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let s = format!("{}-{}-{}", s1, s2, s3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/hashmaps.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let s: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/hashmaps.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let score = scores.get(&team_name);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flot`
[INFO] [stderr]   --> src/gennic.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let flot = PointA { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_flot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_integer`
[INFO] [stderr]   --> src/gennic.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let both_integer = PointB { x: 5, y: 10 };
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_float`
[INFO] [stderr]   --> src/gennic.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let both_float = PointB { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `integer_and_float`
[INFO] [stderr]   --> src/gennic.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let integer_and_float = PointB { x: 5, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/traits.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn notyfy<T: Summary>(item1: T, item2: T) {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:24:62
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:24:68
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/lifetimes.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/boxpoints.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let list = Cons(1,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/oop.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first`
[INFO] [stderr]  --> src/slices.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn first() {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_a`
[INFO] [stderr]   --> src/slices.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn first_word_a(s: &String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_b`
[INFO] [stderr]   --> src/slices.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn first_word_b(s: &str) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/structs.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct User {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/structs.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/structs.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]   --> src/structs.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn build_user(username: String, email: String) -> User {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_a`
[INFO] [stderr]   --> src/structs.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn area_a(width: u32, height: u32) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_b`
[INFO] [stderr]   --> src/structs.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn area_b(dimensions: (u32, u32)) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]   --> src/structs.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/structs.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `square`
[INFO] [stderr]   --> src/structs.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_c`
[INFO] [stderr]   --> src/structs.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn area_c(rectangle: &Rectangle) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/enums.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/enums.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/enums.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]   --> src/matchs.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/matchs.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/matchs.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/matchs.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/iflet.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/iflet.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn b(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/iflet.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn c(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]  --> src/modules.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |         pub fn clarinet() {
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `breathe_in`
[INFO] [stderr]  --> src/modules.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn breathe_in() {}
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]   --> src/modules.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 pub fn clarinet() {}
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/modules.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Vegetable`
[INFO] [stderr]   --> src/modules.rs:56:16
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub struct Vegetable {
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/modules.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         pub fn new(name: &str) -> Vegetable {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/vectors.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/vectors.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/vectors.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/vectors.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn d() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/strings.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/strings.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/strings.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/hashmaps.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/hashmaps.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/errors.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/errors.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_a`
[INFO] [stderr]   --> src/errors.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn read_username_from_file_a() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_b`
[INFO] [stderr]   --> src/errors.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn read_username_from_file_b() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_c`
[INFO] [stderr]   --> src/errors.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn read_username_from_file_c() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointA`
[INFO] [stderr]  --> src/gennic.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PointA<T> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]  --> src/gennic.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn x(&self) -> &T {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance_from_origin`
[INFO] [stderr]   --> src/gennic.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointB`
[INFO] [stderr]   --> src/gennic.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct PointB<T, U> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mixup`
[INFO] [stderr]   --> src/gennic.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn mixup<V, W>(self, other: PointB<V, W>) -> PointB<T, W> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/gennic.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/gennic.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_b`
[INFO] [stderr]   --> src/traits.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest`
[INFO] [stderr]   --> src/lifetimes.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/lifetimes.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]  --> src/iterators.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/iterators.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn new() -> Counter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/iterators.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/boxpoints.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/boxpoints.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/boxpoints.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/deref.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/deref.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/deref.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new(x: T) -> MyBox<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/rc.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/refcell.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]   --> src/refcell.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Nil,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]  --> src/weak.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]  --> src/weak.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Nil,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]   --> src/weak.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn tail(&self) -> Option<&RefCell<Rc<List>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_a`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn new_a(args: &[String]) -> Config {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_config_a`
[INFO] [stderr]    --> src/lib.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn parse_config_a(args: &[String]) -> (&str, &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `search_a`
[INFO] [stderr]    --> src/lib.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn search_a<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 129 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/pattern.rs:44:14
[INFO] [stderr]    |
[INFO] [stderr] 44 |             1...5 => println!("one through five"), // OK
[INFO] [stderr]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/pattern.rs:54:16
[INFO] [stderr]    |
[INFO] [stderr] 54 |             'a'...'j' => println!("early ASCII letter"), // OK
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/pattern.rs:55:16
[INFO] [stderr]    |
[INFO] [stderr] 55 |             'k'...'z' => println!("late ASCII letter"),
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/pattern.rs:300:49
[INFO] [stderr]     |
[INFO] [stderr] 300 |             Message::Hello { id: id_variable @ 3...7 } => {
[INFO] [stderr]     |                                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/pattern.rs:303:36
[INFO] [stderr]     |
[INFO] [stderr] 303 |             Message::Hello { id: 10...12 } => {
[INFO] [stderr]     |                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:134:31
[INFO] [stderr]     |
[INFO] [stderr] 134 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chapter12`
[INFO] [stderr]   --> src/main.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn chapter12() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chapter13`
[INFO] [stderr]   --> src/main.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn chapter13() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_a`
[INFO] [stderr]    --> src/main.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn generate_workout_a(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_b`
[INFO] [stderr]    --> src/main.rs:117:4
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn generate_workout_b(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_c`
[INFO] [stderr]    --> src/main.rs:132:4
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn generate_workout_c(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]    --> src/main.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]    --> src/main.rs:163:4
[INFO] [stderr]     |
[INFO] [stderr] 163 | fn a() {
[INFO] [stderr]     |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guess_game`
[INFO] [stderr]    --> src/main.rs:168:4
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn guess_game() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]    --> src/main.rs:199:16
[INFO] [stderr]     |
[INFO] [stderr] 199 |         pub fn clarinet() {
[INFO] [stderr]     |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet_trio`
[INFO] [stderr]    --> src/main.rs:208:12
[INFO] [stderr]     |
[INFO] [stderr] 208 |     pub fn clarinet_trio() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let hello = &s[0..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let hello = &s[0..=4];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let hello = &s[..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let world = &s[6..11];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let world = &s[6..=10];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let world = &s[6..len];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let world = &s[6..];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let hello_world = &s[0..len];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let hello_world = &s[..];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/structs.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let user2 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user3`
[INFO] [stderr]   --> src/structs.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let user3 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/structs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/structs.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let origin = Point(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enums.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let four = IpAddKind::V4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enums.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let six = IpAddKind::V6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let loopback = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let home = IpAddr::V4(String::from("127.0.0.1"));
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/matchs.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let six = plus_one(five);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/matchs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let none = plus_one(None);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |         _ => count += 1,
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         count += 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/vectors.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let v: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/vectors.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let a = vec![1, 2, 3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/vectors.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let six = &b[1];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/vectors.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let row = vec![
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = data.to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s = "initial content".to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let s = String::from("initial content");
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/strings.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let s = format!("{}-{}-{}", s1, s2, s3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/hashmaps.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let s: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/hashmaps.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let score = scores.get(&team_name);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flot`
[INFO] [stderr]   --> src/gennic.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let flot = PointA { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_flot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_integer`
[INFO] [stderr]   --> src/gennic.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let both_integer = PointB { x: 5, y: 10 };
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_float`
[INFO] [stderr]   --> src/gennic.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let both_float = PointB { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `integer_and_float`
[INFO] [stderr]   --> src/gennic.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let integer_and_float = PointB { x: 5, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/traits.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn notyfy<T: Summary>(item1: T, item2: T) {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:24:62
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:24:68
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/lifetimes.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/boxpoints.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let list = Cons(1,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]   --> src/drop.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let d = CustomSmartPointer { data: String::from("other stuff") };
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/rc.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let b = Cons(3, Rc::clone(&a));
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/rc.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let c = Cons(4, Rc::clone(&a));
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/oop.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/pattern.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let y = 10;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `setting_value` is never read
[INFO] [stderr]    --> src/pattern.rs:196:17
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 setting_value = new_setting_value;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/pattern.rs:215:13
[INFO] [stderr]     |
[INFO] [stderr] 215 |         let y = 10;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first`
[INFO] [stderr]  --> src/slices.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn first() {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/structs.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct User {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/structs.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/structs.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]   --> src/structs.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn build_user(username: String, email: String) -> User {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `square`
[INFO] [stderr]   --> src/structs.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/enums.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/enums.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/enums.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]   --> src/matchs.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/matchs.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/matchs.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/matchs.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/iflet.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/iflet.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn b(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/iflet.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn c(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]  --> src/modules.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |         pub fn clarinet() {
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `breathe_in`
[INFO] [stderr]  --> src/modules.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn breathe_in() {}
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]   --> src/modules.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 pub fn clarinet() {}
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/modules.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/modules.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         id: i32,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/vectors.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/vectors.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/vectors.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/vectors.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn d() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/strings.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/strings.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/strings.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/hashmaps.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/hashmaps.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/errors.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/errors.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_a`
[INFO] [stderr]   --> src/errors.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn read_username_from_file_a() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_b`
[INFO] [stderr]   --> src/errors.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn read_username_from_file_b() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_c`
[INFO] [stderr]   --> src/errors.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn read_username_from_file_c() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointA`
[INFO] [stderr]  --> src/gennic.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PointA<T> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]  --> src/gennic.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn x(&self) -> &T {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance_from_origin`
[INFO] [stderr]   --> src/gennic.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/gennic.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/gennic.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_b`
[INFO] [stderr]   --> src/traits.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest`
[INFO] [stderr]   --> src/lifetimes.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/lifetimes.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/iterators.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/boxpoints.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/boxpoints.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/boxpoints.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/deref.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/deref.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]   --> src/pattern.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |         struct Point {
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/pattern.rs:81:12
[INFO] [stderr]    |
[INFO] [stderr] 81 |         fn main() {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quit`
[INFO] [stderr]    --> src/pattern.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             Quit,
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]    --> src/pattern.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Move { x: i32, y: i32 },
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Write`
[INFO] [stderr]    --> src/pattern.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Write(String),
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rgb`
[INFO] [stderr]    --> src/pattern.rs:143:13
[INFO] [stderr]     |
[INFO] [stderr] 143 |             Rgb(i32, i32, i32),
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quit`
[INFO] [stderr]    --> src/pattern.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |             Quit,
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]    --> src/pattern.rs:149:13
[INFO] [stderr]     |
[INFO] [stderr] 149 |             Move { x: i32, y: i32 },
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Write`
[INFO] [stderr]    --> src/pattern.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |             Write(String),
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]    --> src/pattern.rs:233:13
[INFO] [stderr]     |
[INFO] [stderr] 233 |             y: i32,
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `z`
[INFO] [stderr]    --> src/pattern.rs:234:13
[INFO] [stderr]     |
[INFO] [stderr] 234 |             z: i32,
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/unsafe_spuerpowers.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/unsafe_spuerpowers.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn d() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `f`
[INFO] [stderr]   --> src/unsafe_spuerpowers.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn f() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_a`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn new_a(args: &[String]) -> Config {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_config_a`
[INFO] [stderr]    --> src/lib.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn parse_config_a(args: &[String]) -> (&str, &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `search_a`
[INFO] [stderr]    --> src/lib.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn search_a<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 135 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `"docker" "inspect" "a893feb901c9dd4720473383a8bd82a417592b3313c596e34ac6df4d646d57bf"`
[INFO] running `"docker" "rm" "-f" "a893feb901c9dd4720473383a8bd82a417592b3313c596e34ac6df4d646d57bf"`
[INFO] [stdout] a893feb901c9dd4720473383a8bd82a417592b3313c596e34ac6df4d646d57bf
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9d4e8f080844bf459f77c34d67e84cbf31fd4174ab2d12334662f2c197affce1
[INFO] running `"docker" "start" "-a" "9d4e8f080844bf459f77c34d67e84cbf31fd4174ab2d12334662f2c197affce1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/pattern.rs:44:14
[INFO] [stderr]    |
[INFO] [stderr] 44 |             1...5 => println!("one through five"), // OK
[INFO] [stderr]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/pattern.rs:54:16
[INFO] [stderr]    |
[INFO] [stderr] 54 |             'a'...'j' => println!("early ASCII letter"), // OK
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/pattern.rs:55:16
[INFO] [stderr]    |
[INFO] [stderr] 55 |             'k'...'z' => println!("late ASCII letter"),
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/pattern.rs:300:49
[INFO] [stderr]     |
[INFO] [stderr] 300 |             Message::Hello { id: id_variable @ 3...7 } => {
[INFO] [stderr]     |                                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/pattern.rs:303:36
[INFO] [stderr]     |
[INFO] [stderr] 303 |             Message::Hello { id: 10...12 } => {
[INFO] [stderr]     |                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:134:31
[INFO] [stderr]     |
[INFO] [stderr] 134 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let hello = &s[0..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let hello = &s[0..=4];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let hello = &s[..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let world = &s[6..11];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let world = &s[6..=10];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let world = &s[6..len];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let world = &s[6..];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let hello_world = &s[0..len];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let hello_world = &s[..];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/structs.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let user2 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user3`
[INFO] [stderr]   --> src/structs.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let user3 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/structs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/structs.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let origin = Point(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enums.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let four = IpAddKind::V4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enums.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let six = IpAddKind::V6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let loopback = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let home = IpAddr::V4(String::from("127.0.0.1"));
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/matchs.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let six = plus_one(five);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/matchs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let none = plus_one(None);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |         _ => count += 1,
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         count += 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/vectors.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let v: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/vectors.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let a = vec![1, 2, 3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/vectors.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let six = &b[1];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/vectors.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let row = vec![
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = data.to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s = "initial content".to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let s = String::from("initial content");
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/strings.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let s = format!("{}-{}-{}", s1, s2, s3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/hashmaps.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let s: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/hashmaps.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let score = scores.get(&team_name);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flot`
[INFO] [stderr]   --> src/gennic.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let flot = PointA { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_flot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_integer`
[INFO] [stderr]   --> src/gennic.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let both_integer = PointB { x: 5, y: 10 };
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_float`
[INFO] [stderr]   --> src/gennic.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let both_float = PointB { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `integer_and_float`
[INFO] [stderr]   --> src/gennic.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let integer_and_float = PointB { x: 5, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/traits.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn notyfy<T: Summary>(item1: T, item2: T) {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:24:62
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:24:68
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/lifetimes.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/boxpoints.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let list = Cons(1,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]   --> src/drop.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let d = CustomSmartPointer { data: String::from("other stuff") };
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/rc.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let b = Cons(3, Rc::clone(&a));
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/rc.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let c = Cons(4, Rc::clone(&a));
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/oop.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/pattern.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let y = 10;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `setting_value` is never read
[INFO] [stderr]    --> src/pattern.rs:196:17
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 setting_value = new_setting_value;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/pattern.rs:215:13
[INFO] [stderr]     |
[INFO] [stderr] 215 |         let y = 10;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first`
[INFO] [stderr]  --> src/slices.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn first() {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/structs.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct User {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/structs.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/structs.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]   --> src/structs.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn build_user(username: String, email: String) -> User {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `square`
[INFO] [stderr]   --> src/structs.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/enums.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/enums.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/enums.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]   --> src/matchs.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/matchs.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/matchs.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/matchs.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/iflet.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/iflet.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn b(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/iflet.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn c(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]  --> src/modules.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |         pub fn clarinet() {
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `breathe_in`
[INFO] [stderr]  --> src/modules.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn breathe_in() {}
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]   --> src/modules.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 pub fn clarinet() {}
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/modules.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/modules.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         id: i32,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/vectors.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/vectors.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/vectors.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/vectors.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn d() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/strings.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/strings.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/strings.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/hashmaps.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/hashmaps.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/errors.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:121:31
[INFO] [stderr]     |
[INFO] [stderr] 121 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/lib.rs:134:31
[INFO] [stderr]     |
[INFO] [stderr] 134 |             results.push(line.trim_left());
[INFO] [stderr]     |                               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let hello = &s[0..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let hello = &s[0..=4];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]  --> src/slices.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let hello = &s[..5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let world = &s[6..11];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let world = &s[6..=10];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let world = &s[6..len];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> src/slices.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let world = &s[6..];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let hello_world = &s[0..len];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello_world`
[INFO] [stderr]   --> src/slices.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let hello_world = &s[..];
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/structs.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let user2 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user3`
[INFO] [stderr]   --> src/structs.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let user3 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/structs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/structs.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let origin = Point(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enums.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let four = IpAddKind::V4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enums.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let six = IpAddKind::V6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let loopback = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let home = IpAddr::V4(String::from("127.0.0.1"));
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enums.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/enums.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let loopback = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/matchs.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let six = plus_one(five);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/matchs.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let none = plus_one(None);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |         _ => count += 1,
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/iflet.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/iflet.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         count += 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/vectors.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let v: Vec<i32> = Vec::new();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/vectors.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let a = vec![1, 2, 3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/vectors.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let six = &b[1];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/vectors.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let row = vec![
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let s = data.to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let s = "initial content".to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/strings.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let s = String::from("initial content");
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/strings.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let s = format!("{}-{}-{}", s1, s2, s3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/hashmaps.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let s: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/hashmaps.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let score = scores.get(&team_name);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/errors.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flot`
[INFO] [stderr]   --> src/gennic.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let flot = PointA { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_flot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_integer`
[INFO] [stderr]   --> src/gennic.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let both_integer = PointB { x: 5, y: 10 };
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `both_float`
[INFO] [stderr]   --> src/gennic.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let both_float = PointB { x: 1.0, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `integer_and_float`
[INFO] [stderr]   --> src/gennic.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let integer_and_float = PointB { x: 5, y: 4.0 };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/traits.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn notyfy<T: Summary>(item1: T, item2: T) {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:24:62
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:24:68
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn some_function_a<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/traits.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/traits.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/lifetimes.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/boxpoints.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let list = Cons(1,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/oop.rs:40:27
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first`
[INFO] [stderr]  --> src/slices.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn first() {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_a`
[INFO] [stderr]   --> src/slices.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn first_word_a(s: &String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_b`
[INFO] [stderr]   --> src/slices.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn first_word_b(s: &str) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/structs.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct User {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/structs.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/structs.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]   --> src/structs.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn build_user(username: String, email: String) -> User {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_a`
[INFO] [stderr]   --> src/structs.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn area_a(width: u32, height: u32) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_b`
[INFO] [stderr]   --> src/structs.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn area_b(dimensions: (u32, u32)) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]   --> src/structs.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn area(&self) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/structs.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `square`
[INFO] [stderr]   --> src/structs.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area_c`
[INFO] [stderr]   --> src/structs.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn area_c(rectangle: &Rectangle) -> u32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/enums.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/enums.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/enums.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]   --> src/matchs.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/matchs.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/matchs.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/matchs.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/iflet.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/iflet.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn b(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/iflet.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn c(coin: Coin) {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]  --> src/modules.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |         pub fn clarinet() {
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `breathe_in`
[INFO] [stderr]  --> src/modules.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn breathe_in() {}
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]   --> src/modules.rs:23:24
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 pub fn clarinet() {}
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fna`
[INFO] [stderr]   --> src/modules.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn fna() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/modules.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Vegetable`
[INFO] [stderr]   --> src/modules.rs:56:16
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub struct Vegetable {
[INFO] [stderr]    |                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/modules.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         pub fn new(name: &str) -> Vegetable {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/vectors.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/vectors.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/vectors.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/vectors.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn d() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/strings.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/strings.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/errors.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_a`
[INFO] [stderr]   --> src/errors.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn read_username_from_file_a() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `c`
[INFO] [stderr]   --> src/strings.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn c() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/hashmaps.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/hashmaps.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_b`
[INFO] [stderr]   --> src/errors.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn read_username_from_file_b() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_c`
[INFO] [stderr]   --> src/errors.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn read_username_from_file_c() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/errors.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/errors.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointA`
[INFO] [stderr]  --> src/gennic.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PointA<T> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]  --> src/gennic.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn x(&self) -> &T {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance_from_origin`
[INFO] [stderr]   --> src/gennic.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_a`
[INFO] [stderr]   --> src/errors.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn read_username_from_file_a() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_b`
[INFO] [stderr]   --> src/errors.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn read_username_from_file_b() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file_c`
[INFO] [stderr]   --> src/errors.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn read_username_from_file_c() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/gennic.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/gennic.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointA`
[INFO] [stderr]  --> src/gennic.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct PointA<T> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]  --> src/gennic.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn x(&self) -> &T {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance_from_origin`
[INFO] [stderr]   --> src/gennic.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_b`
[INFO] [stderr]   --> src/traits.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest`
[INFO] [stderr]   --> src/lifetimes.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/lifetimes.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointB`
[INFO] [stderr]   --> src/gennic.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct PointB<T, U> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mixup`
[INFO] [stderr]   --> src/gennic.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn mixup<V, W>(self, other: PointB<V, W>) -> PointB<T, W> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/iterators.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/boxpoints.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/gennic.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/gennic.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/boxpoints.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/boxpoints.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/deref.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_b`
[INFO] [stderr]   --> src/traits.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn some_function_b<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest`
[INFO] [stderr]   --> src/lifetimes.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/lifetimes.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/deref.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]   --> src/pattern.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |         struct Point {
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/pattern.rs:81:12
[INFO] [stderr]    |
[INFO] [stderr] 81 |         fn main() {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]  --> src/iterators.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/iterators.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn new() -> Counter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]   --> src/iterators.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn a() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quit`
[INFO] [stderr]    --> src/pattern.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             Quit,
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]    --> src/pattern.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Move { x: i32, y: i32 },
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Write`
[INFO] [stderr]    --> src/pattern.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Write(String),
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/boxpoints.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/boxpoints.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/boxpoints.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rgb`
[INFO] [stderr]    --> src/pattern.rs:143:13
[INFO] [stderr]     |
[INFO] [stderr] 143 |             Rgb(i32, i32, i32),
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quit`
[INFO] [stderr]    --> src/pattern.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |             Quit,
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/deref.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn a() {
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/deref.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn b() {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/deref.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new(x: T) -> MyBox<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]    --> src/pattern.rs:149:13
[INFO] [stderr]     |
[INFO] [stderr] 149 |             Move { x: i32, y: i32 },
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Write`
[INFO] [stderr]    --> src/pattern.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |             Write(String),
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]    --> src/pattern.rs:233:13
[INFO] [stderr]     |
[INFO] [stderr] 233 |             y: i32,
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `List`
[INFO] [stderr]  --> src/rc.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum List {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/refcell.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]   --> src/refcell.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Nil,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `z`
[INFO] [stderr]    --> src/pattern.rs:234:13
[INFO] [stderr]     |
[INFO] [stderr] 234 |             z: i32,
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `b`
[INFO] [stderr]   --> src/unsafe_spuerpowers.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn b() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/unsafe_spuerpowers.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn d() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]  --> src/weak.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]  --> src/weak.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Nil,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]   --> src/weak.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn tail(&self) -> Option<&RefCell<Rc<List>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `f`
[INFO] [stderr]   --> src/unsafe_spuerpowers.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn f() {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_a`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn new_a(args: &[String]) -> Config {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_config_a`
[INFO] [stderr]    --> src/lib.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn parse_config_a(args: &[String]) -> (&str, &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_a`
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn new_a(args: &[String]) -> Config {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_config_a`
[INFO] [stderr]    --> src/lib.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn parse_config_a(args: &[String]) -> (&str, &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `search_a`
[INFO] [stderr]    --> src/lib.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn search_a<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `search_a`
[INFO] [stderr]    --> src/lib.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn search_a<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 135 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 129 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chapter12`
[INFO] [stderr]   --> src/main.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn chapter12() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chapter13`
[INFO] [stderr]   --> src/main.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn chapter13() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_a`
[INFO] [stderr]    --> src/main.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn generate_workout_a(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_b`
[INFO] [stderr]    --> src/main.rs:117:4
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn generate_workout_b(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_workout_c`
[INFO] [stderr]    --> src/main.rs:132:4
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn generate_workout_c(intensity: u32, random_number: u32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]    --> src/main.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]    --> src/main.rs:163:4
[INFO] [stderr]     |
[INFO] [stderr] 163 | fn a() {
[INFO] [stderr]     |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guess_game`
[INFO] [stderr]    --> src/main.rs:168:4
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn guess_game() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet`
[INFO] [stderr]    --> src/main.rs:199:16
[INFO] [stderr]     |
[INFO] [stderr] 199 |         pub fn clarinet() {
[INFO] [stderr]     |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clarinet_trio`
[INFO] [stderr]    --> src/main.rs:208:12
[INFO] [stderr]     |
[INFO] [stderr] 208 |     pub fn clarinet_trio() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_hello-03aa369fe87a563b
[INFO] [stdout] 
[INFO] [stdout] running 63 tests
[INFO] [stdout] test modules::tests::a ... ok
[INFO] [stdout] test advanced_traits::tests::d ... ok
[INFO] [stdout] test advanced_traits::tests::b ... ok
[INFO] [stdout] test iterators::tests::using_other_iterator_trait_methods ... ok
[INFO] [stdout] test deref::tests::a ... ok
[INFO] [stdout] test mutex::tests::a ... ok
[INFO] [stdout] test iterators::tests::iterator_sum ... ok
[INFO] [stdout] test iterators::tests::iterator_demonstration ... ok
[INFO] [stdout] test advanced_traits::tests::c ... ok
[INFO] [stdout] test drop::tests::a ... ok
[INFO] [stdout] test iterators::tests::filters_by_size ... ok
[INFO] [stdout] test iterators::tests::calling_next_directly ... ok
[INFO] [stdout] test gennic::tests::a ... ok
[INFO] [stdout] test advanced_traits::tests::a ... ok
[INFO] [stdout] test oop::tests::a ... ok
[INFO] [stdout] test pattern::tests::f ... ok
[INFO] [stdout] test pattern::tests::g ... ok
[INFO] [stdout] test pattern::tests::h ... ok
[INFO] [stdout] test pattern::tests::b ... ok
[INFO] [stdout] test pattern::tests::d ... ok
[INFO] [stdout] test pattern::tests::i ... ok
[INFO] [stdout] test pattern::tests::c ... ok
[INFO] [stdout] test pattern::tests::a ... ok
[INFO] [stdout] test pattern::tests::l ... ok
[INFO] [stdout] test pattern::tests::m ... ok
[INFO] [stdout] test mutex::tests::b ... ok
[INFO] [stdout] test pattern::tests::e ... ok
[INFO] [stdout] test pattern::tests::j ... ok
[INFO] [stdout] test channel::test::a ... ok
[INFO] [stdout] test pattern::tests::k ... ok
[INFO] [stdout] test pattern::tests::n ... ok
[INFO] [stdout] test pattern::tests::p ... ok
[INFO] [stdout] test pattern::tests::q ... ok
[INFO] [stdout] test pattern::tests::r ... ok
[INFO] [stdout] test refcell::tests::a ... ok
[INFO] [stdout] test pattern::tests::t ... ok
[INFO] [stdout] test pattern::tests::o ... ok
[INFO] [stdout] test pattern::tests::s ... ok
[INFO] [stdout] test rc::tests::a ... ok
[INFO] [stdout] test pattern::tests::u ... ok
[INFO] [stdout] test traits::tests::a ... ok
[INFO] [stdout] test structs::tests::test_rectangle ... ok
[INFO] [stdout] test tests::one_work ... ok
[INFO] [stdout] test tests::case_insensitive ... ok
[INFO] [stdout] Here is vector: [1, 2, 3]
[INFO] [stdout] hi number 1 from the spawned thread!
[INFO] [stdout] hi number 2 from the spawned thread!
[INFO] [stdout] test unsafe_spuerpowers::tests::c ... ok
[INFO] [stdout] test unsafe_spuerpowers::tests::a ... ok
[INFO] [stdout] test structs::tests::test_area_a ... ok
[INFO] [stdout] test structs::tests::test_area_b ... ok
[INFO] [stdout] test slices::tests::c ... ok
[INFO] [stdout] test slices::tests::b ... ok
[INFO] [stdout] test slices::tests::a ... ok
[INFO] [stdout] test tests::case_sensitive ... ok
[INFO] [stdout] test refcell::tests::it_sends_an_over_75_percent_warning_message ... ok
[INFO] [stdout] test structs::tests::test_area_c ... ok
[INFO] [stdout] test traits::tests::b ... ok
[INFO] [stdout] hi number 3 from the spawned thread!
[INFO] [stdout] test unsafe_spuerpowers::tests::e ... ok
[INFO] [stdout] hi number 4 from the spawned thread!
[INFO] [stdout] hi number 5 from the spawned thread!
[INFO] [stdout] test weak::tests::b ... ok
[INFO] [stdout] test thread::tests::b ... ok
[INFO] [stdout] hi number 6 from the spawned thread!
[INFO] [stdout] hi number 7 from the spawned thread!
[INFO] [stdout] test weak::tests::c ... ok
[INFO] [stdout] hi number 8 from the spawned thread!
[INFO] [stdout] test weak::tests::a ... ok
[INFO] [stdout] hi number 9 from the spawned thread!
[INFO] [stdout] test thread::tests::a ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_hello-aab7dcec6696497d
[INFO] [stdout] test channel::test::b ... ok
[INFO] [stdout] test channel::test::c ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 63 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust-hello
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9d4e8f080844bf459f77c34d67e84cbf31fd4174ab2d12334662f2c197affce1"`
[INFO] running `"docker" "rm" "-f" "9d4e8f080844bf459f77c34d67e84cbf31fd4174ab2d12334662f2c197affce1"`
[INFO] [stdout] 9d4e8f080844bf459f77c34d67e84cbf31fd4174ab2d12334662f2c197affce1