[INFO] updating cached repository https://github.com/Kyledmw/rust-web-thing
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fbfdac95ad57df9b3a4e5fa61237a10216cd458
[INFO] testing Kyledmw/rust-web-thing against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyledmw%2Frust-web-thing" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kyledmw/rust-web-thing on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kyledmw/rust-web-thing
[INFO] finished tweaking git repo https://github.com/Kyledmw/rust-web-thing
[INFO] tweaked toml for git repo https://github.com/Kyledmw/rust-web-thing written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Kyledmw/rust-web-thing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d19a8e5cada96c79f378e0299ea5cedbdc2cd850fb595274a77662d258d7a388
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d19a8e5cada96c79f378e0299ea5cedbdc2cd850fb595274a77662d258d7a388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d19a8e5cada96c79f378e0299ea5cedbdc2cd850fb595274a77662d258d7a388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d19a8e5cada96c79f378e0299ea5cedbdc2cd850fb595274a77662d258d7a388", kill_on_drop: false }`
[INFO] [stdout] d19a8e5cada96c79f378e0299ea5cedbdc2cd850fb595274a77662d258d7a388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7cdbc845e47c5cfa4a0e225bac2322dd2538519af3d3b660859df5d08e6aa329
[INFO] running `Command { std: "docker" "start" "-a" "7cdbc845e47c5cfa4a0e225bac2322dd2538519af3d3b660859df5d08e6aa329", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling rust-web-thing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]    --> src/main.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let word = first_word(&s);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user3`
[INFO] [stdout]    --> src/main.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let user3 = User {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user4`
[INFO] [stdout]    --> src/main.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |     let user4 = User {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]    --> src/main.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |     let black = Color(0, 0, 0);
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]    --> src/main.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 435 |     let home = IpAddrStruct {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loopback`
[INFO] [stdout]    --> src/main.rs:440:9
[INFO] [stdout]     |
[INFO] [stdout] 440 |     let loopback = IpAddrStruct {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]    --> src/main.rs:445:9
[INFO] [stdout]     |
[INFO] [stdout] 445 |     let h = IpAddrS::V4(String::from("127.0.0.1"));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lb`
[INFO] [stdout]    --> src/main.rs:446:9
[INFO] [stdout]     |
[INFO] [stdout] 446 |     let lb = IpAddrS::V6(String::from("::1"));
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_lb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h2`
[INFO] [stdout]    --> src/main.rs:448:9
[INFO] [stdout]     |
[INFO] [stdout] 448 |     let h2  = IpAddr::V4(127, 0, 0, 1);
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_h2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_type`
[INFO] [stdout]    --> src/main.rs:458:10
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]     |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_number`
[INFO] [stdout]    --> src/main.rs:489:9
[INFO] [stdout]     |
[INFO] [stdout] 489 |     let some_number = Some(5);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_string`
[INFO] [stdout]    --> src/main.rs:490:9
[INFO] [stdout]     |
[INFO] [stdout] 490 |     let some_string = Some("a string");
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `absent_number`
[INFO] [stdout]    --> src/main.rs:492:9
[INFO] [stdout]     |
[INFO] [stdout] 492 |     let absent_number: Option<i32> = None;
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/main.rs:499:9
[INFO] [stdout]     |
[INFO] [stdout] 499 |     let sum = y.unwrap() + x;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_POINTS`
[INFO] [stdout]   --> src/main.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const MAX_POINTS: u32 = 100_000;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main_old`
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn main_old() {    
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `another_function`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn another_function(a0: i32, a1: i32, a2: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `five`
[INFO] [stdout]   --> src/main.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn five() -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]   --> src/main.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn plus_one(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `flow_control`
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn flow_control() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ownership`
[INFO] [stdout]    --> src/main.rs:146:4
[INFO] [stdout]     |
[INFO] [stdout] 146 | fn ownership() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `takes_ownership`
[INFO] [stdout]    --> src/main.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn takes_ownership(some_string: String) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `makes_copy`
[INFO] [stdout]    --> src/main.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn makes_copy(some_integer: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gives_ownership`
[INFO] [stdout]    --> src/main.rs:181:4
[INFO] [stdout]     |
[INFO] [stdout] 181 | fn gives_ownership() -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `takes_and_gives_back`
[INFO] [stdout]    --> src/main.rs:186:4
[INFO] [stdout]     |
[INFO] [stdout] 186 | fn takes_and_gives_back(a_string: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_length`
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `references`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn references() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_length_ref`
[INFO] [stdout]    --> src/main.rs:209:4
[INFO] [stdout]     |
[INFO] [stdout] 209 | fn calculate_length_ref(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mut_references`
[INFO] [stdout]    --> src/main.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn mut_references() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `change`
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn change(some_string: &mut String) {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_dangle`
[INFO] [stdout]    --> src/main.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn no_dangle() -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `word_runner`
[INFO] [stdout]    --> src/main.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn word_runner() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word`
[INFO] [stdout]    --> src/main.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn first_word(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_slice`
[INFO] [stdout]    --> src/main.rs:277:4
[INFO] [stdout]     |
[INFO] [stdout] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_improved`
[INFO] [stdout]    --> src/main.rs:288:4
[INFO] [stdout]     |
[INFO] [stdout] 288 | fn first_word_improved(s: &str) -> &str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]    --> src/main.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 299 | struct User {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `my_structs`
[INFO] [stdout]    --> src/main.rs:306:4
[INFO] [stdout]     |
[INFO] [stdout] 306 | fn my_structs() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_user`
[INFO] [stdout]    --> src/main.rs:343:4
[INFO] [stdout]     |
[INFO] [stdout] 343 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_build_user`
[INFO] [stdout]    --> src/main.rs:353:4
[INFO] [stdout]     |
[INFO] [stdout] 353 | fn test_build_user() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]    --> src/main.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 | struct Color(i32, i32, i32); // structs without named fields.
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_tuple_structs`
[INFO] [stdout]    --> src/main.rs:364:4
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn test_tuple_structs() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]    --> src/main.rs:378:8
[INFO] [stdout]     |
[INFO] [stdout] 378 |     fn area(&self) -> u32 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `square`
[INFO] [stdout]    --> src/main.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main_old2`
[INFO] [stdout]    --> src/main.rs:388:4
[INFO] [stdout]     |
[INFO] [stdout] 388 | fn main_old2() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rectangle_examples`
[INFO] [stdout]    --> src/main.rs:392:4
[INFO] [stdout]     |
[INFO] [stdout] 392 | fn rectangle_examples() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testing_referencing`
[INFO] [stdout]    --> src/main.rs:407:4
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn testing_referencing(rect: &Rectangle) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]    --> src/main.rs:411:6
[INFO] [stdout]     |
[INFO] [stdout] 411 | enum IpAddrKind {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `IpAddrStruct`
[INFO] [stdout]    --> src/main.rs:416:8
[INFO] [stdout]     |
[INFO] [stdout] 416 | struct IpAddrStruct {  
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrS`
[INFO] [stdout]    --> src/main.rs:421:6
[INFO] [stdout]     |
[INFO] [stdout] 421 | enum IpAddrS {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddr`
[INFO] [stdout]    --> src/main.rs:426:6
[INFO] [stdout]     |
[INFO] [stdout] 426 | enum IpAddr {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main_old3`
[INFO] [stdout]    --> src/main.rs:431:4
[INFO] [stdout]     |
[INFO] [stdout] 431 | fn main_old3() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]    --> src/main.rs:458:4
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]    --> src/main.rs:460:6
[INFO] [stdout]     |
[INFO] [stdout] 460 | enum Message {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `QuitMessage`
[INFO] [stdout]    --> src/main.rs:467:8
[INFO] [stdout]     |
[INFO] [stdout] 467 | struct QuitMessage; // unit struct
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MoveMessage`
[INFO] [stdout]    --> src/main.rs:468:8
[INFO] [stdout]     |
[INFO] [stdout] 468 | struct MoveMessage {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `WriteMessage`
[INFO] [stdout]    --> src/main.rs:473:8
[INFO] [stdout]     |
[INFO] [stdout] 473 | struct WriteMessage(String);
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ChangeColorMessage`
[INFO] [stdout]    --> src/main.rs:474:8
[INFO] [stdout]     |
[INFO] [stdout] 474 | struct ChangeColorMessage(i32, i32, i32);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call`
[INFO] [stdout]    --> src/main.rs:477:8
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn call(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_stuff`
[INFO] [stdout]    --> src/main.rs:482:4
[INFO] [stdout]     |
[INFO] [stdout] 482 | fn enum_stuff() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional_enum`
[INFO] [stdout]    --> src/main.rs:488:4
[INFO] [stdout]     |
[INFO] [stdout] 488 | fn optional_enum() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]    --> src/main.rs:506:5
[INFO] [stdout]     |
[INFO] [stdout] 506 |     Alabama,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alaska`
[INFO] [stdout]    --> src/main.rs:507:5
[INFO] [stdout]     |
[INFO] [stdout] 507 |     Alaska
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Coin`
[INFO] [stdout]    --> src/main.rs:510:6
[INFO] [stdout]     |
[INFO] [stdout] 510 | enum Coin { 
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_in_cents`
[INFO] [stdout]    --> src/main.rs:517:4
[INFO] [stdout]     |
[INFO] [stdout] 517 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 64 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.83s
[INFO] running `Command { std: "docker" "inspect" "7cdbc845e47c5cfa4a0e225bac2322dd2538519af3d3b660859df5d08e6aa329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cdbc845e47c5cfa4a0e225bac2322dd2538519af3d3b660859df5d08e6aa329", kill_on_drop: false }`
[INFO] [stdout] 7cdbc845e47c5cfa4a0e225bac2322dd2538519af3d3b660859df5d08e6aa329
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 337d03dcac024e39a1b49bc40a914dedf1c1390b4eea3f3e995c331e7cdc7dc1
[INFO] running `Command { std: "docker" "start" "-a" "337d03dcac024e39a1b49bc40a914dedf1c1390b4eea3f3e995c331e7cdc7dc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-web-thing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]    --> src/main.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let word = first_word(&s);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user3`
[INFO] [stdout]    --> src/main.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let user3 = User {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user4`
[INFO] [stdout]    --> src/main.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |     let user4 = User {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]    --> src/main.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |     let black = Color(0, 0, 0);
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]    --> src/main.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 435 |     let home = IpAddrStruct {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loopback`
[INFO] [stdout]    --> src/main.rs:440:9
[INFO] [stdout]     |
[INFO] [stdout] 440 |     let loopback = IpAddrStruct {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]    --> src/main.rs:445:9
[INFO] [stdout]     |
[INFO] [stdout] 445 |     let h = IpAddrS::V4(String::from("127.0.0.1"));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lb`
[INFO] [stdout]    --> src/main.rs:446:9
[INFO] [stdout]     |
[INFO] [stdout] 446 |     let lb = IpAddrS::V6(String::from("::1"));
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_lb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h2`
[INFO] [stdout]    --> src/main.rs:448:9
[INFO] [stdout]     |
[INFO] [stdout] 448 |     let h2  = IpAddr::V4(127, 0, 0, 1);
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_h2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_type`
[INFO] [stdout]    --> src/main.rs:458:10
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]     |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_number`
[INFO] [stdout]    --> src/main.rs:489:9
[INFO] [stdout]     |
[INFO] [stdout] 489 |     let some_number = Some(5);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_string`
[INFO] [stdout]    --> src/main.rs:490:9
[INFO] [stdout]     |
[INFO] [stdout] 490 |     let some_string = Some("a string");
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `absent_number`
[INFO] [stdout]    --> src/main.rs:492:9
[INFO] [stdout]     |
[INFO] [stdout] 492 |     let absent_number: Option<i32> = None;
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/main.rs:499:9
[INFO] [stdout]     |
[INFO] [stdout] 499 |     let sum = y.unwrap() + x;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_POINTS`
[INFO] [stdout]   --> src/main.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const MAX_POINTS: u32 = 100_000;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main_old`
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn main_old() {    
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `another_function`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn another_function(a0: i32, a1: i32, a2: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `five`
[INFO] [stdout]   --> src/main.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn five() -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]   --> src/main.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn plus_one(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `flow_control`
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn flow_control() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ownership`
[INFO] [stdout]    --> src/main.rs:146:4
[INFO] [stdout]     |
[INFO] [stdout] 146 | fn ownership() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `takes_ownership`
[INFO] [stdout]    --> src/main.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn takes_ownership(some_string: String) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `makes_copy`
[INFO] [stdout]    --> src/main.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn makes_copy(some_integer: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gives_ownership`
[INFO] [stdout]    --> src/main.rs:181:4
[INFO] [stdout]     |
[INFO] [stdout] 181 | fn gives_ownership() -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `takes_and_gives_back`
[INFO] [stdout]    --> src/main.rs:186:4
[INFO] [stdout]     |
[INFO] [stdout] 186 | fn takes_and_gives_back(a_string: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_length`
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `references`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn references() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_length_ref`
[INFO] [stdout]    --> src/main.rs:209:4
[INFO] [stdout]     |
[INFO] [stdout] 209 | fn calculate_length_ref(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mut_references`
[INFO] [stdout]    --> src/main.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn mut_references() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `change`
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn change(some_string: &mut String) {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_dangle`
[INFO] [stdout]    --> src/main.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn no_dangle() -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `word_runner`
[INFO] [stdout]    --> src/main.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn word_runner() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word`
[INFO] [stdout]    --> src/main.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn first_word(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_slice`
[INFO] [stdout]    --> src/main.rs:277:4
[INFO] [stdout]     |
[INFO] [stdout] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_improved`
[INFO] [stdout]    --> src/main.rs:288:4
[INFO] [stdout]     |
[INFO] [stdout] 288 | fn first_word_improved(s: &str) -> &str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]    --> src/main.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 299 | struct User {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `my_structs`
[INFO] [stdout]    --> src/main.rs:306:4
[INFO] [stdout]     |
[INFO] [stdout] 306 | fn my_structs() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_user`
[INFO] [stdout]    --> src/main.rs:343:4
[INFO] [stdout]     |
[INFO] [stdout] 343 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_build_user`
[INFO] [stdout]    --> src/main.rs:353:4
[INFO] [stdout]     |
[INFO] [stdout] 353 | fn test_build_user() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]    --> src/main.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 | struct Color(i32, i32, i32); // structs without named fields.
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_tuple_structs`
[INFO] [stdout]    --> src/main.rs:364:4
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn test_tuple_structs() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]    --> src/main.rs:378:8
[INFO] [stdout]     |
[INFO] [stdout] 378 |     fn area(&self) -> u32 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `square`
[INFO] [stdout]    --> src/main.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main_old2`
[INFO] [stdout]    --> src/main.rs:388:4
[INFO] [stdout]     |
[INFO] [stdout] 388 | fn main_old2() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rectangle_examples`
[INFO] [stdout]    --> src/main.rs:392:4
[INFO] [stdout]     |
[INFO] [stdout] 392 | fn rectangle_examples() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testing_referencing`
[INFO] [stdout]    --> src/main.rs:407:4
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn testing_referencing(rect: &Rectangle) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]    --> src/main.rs:411:6
[INFO] [stdout]     |
[INFO] [stdout] 411 | enum IpAddrKind {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `IpAddrStruct`
[INFO] [stdout]    --> src/main.rs:416:8
[INFO] [stdout]     |
[INFO] [stdout] 416 | struct IpAddrStruct {  
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrS`
[INFO] [stdout]    --> src/main.rs:421:6
[INFO] [stdout]     |
[INFO] [stdout] 421 | enum IpAddrS {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddr`
[INFO] [stdout]    --> src/main.rs:426:6
[INFO] [stdout]     |
[INFO] [stdout] 426 | enum IpAddr {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main_old3`
[INFO] [stdout]    --> src/main.rs:431:4
[INFO] [stdout]     |
[INFO] [stdout] 431 | fn main_old3() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]    --> src/main.rs:458:4
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]    --> src/main.rs:460:6
[INFO] [stdout]     |
[INFO] [stdout] 460 | enum Message {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `QuitMessage`
[INFO] [stdout]    --> src/main.rs:467:8
[INFO] [stdout]     |
[INFO] [stdout] 467 | struct QuitMessage; // unit struct
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MoveMessage`
[INFO] [stdout]    --> src/main.rs:468:8
[INFO] [stdout]     |
[INFO] [stdout] 468 | struct MoveMessage {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `WriteMessage`
[INFO] [stdout]    --> src/main.rs:473:8
[INFO] [stdout]     |
[INFO] [stdout] 473 | struct WriteMessage(String);
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ChangeColorMessage`
[INFO] [stdout]    --> src/main.rs:474:8
[INFO] [stdout]     |
[INFO] [stdout] 474 | struct ChangeColorMessage(i32, i32, i32);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call`
[INFO] [stdout]    --> src/main.rs:477:8
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn call(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_stuff`
[INFO] [stdout]    --> src/main.rs:482:4
[INFO] [stdout]     |
[INFO] [stdout] 482 | fn enum_stuff() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional_enum`
[INFO] [stdout]    --> src/main.rs:488:4
[INFO] [stdout]     |
[INFO] [stdout] 488 | fn optional_enum() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]    --> src/main.rs:506:5
[INFO] [stdout]     |
[INFO] [stdout] 506 |     Alabama,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alaska`
[INFO] [stdout]    --> src/main.rs:507:5
[INFO] [stdout]     |
[INFO] [stdout] 507 |     Alaska
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Coin`
[INFO] [stdout]    --> src/main.rs:510:6
[INFO] [stdout]     |
[INFO] [stdout] 510 | enum Coin { 
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_in_cents`
[INFO] [stdout]    --> src/main.rs:517:4
[INFO] [stdout]     |
[INFO] [stdout] 517 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 64 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "337d03dcac024e39a1b49bc40a914dedf1c1390b4eea3f3e995c331e7cdc7dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337d03dcac024e39a1b49bc40a914dedf1c1390b4eea3f3e995c331e7cdc7dc1", kill_on_drop: false }`
[INFO] [stdout] 337d03dcac024e39a1b49bc40a914dedf1c1390b4eea3f3e995c331e7cdc7dc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41b84717e99a13f85c36e9c583ea081a225a8a2234c908d9835abb07362c6097
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "41b84717e99a13f85c36e9c583ea081a225a8a2234c908d9835abb07362c6097", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]    --> src/main.rs:241:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |     let word = first_word(&s);
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user3`
[INFO] [stderr]    --> src/main.rs:325:9
[INFO] [stderr]     |
[INFO] [stderr] 325 |     let user3 = User {
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user4`
[INFO] [stderr]    --> src/main.rs:334:9
[INFO] [stderr]     |
[INFO] [stderr] 334 |     let user4 = User {
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user4`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]    --> src/main.rs:365:9
[INFO] [stderr]     |
[INFO] [stderr] 365 |     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: `home`
[INFO] [stderr]    --> src/main.rs:435:9
[INFO] [stderr]     |
[INFO] [stderr] 435 |     let home = IpAddrStruct {
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]    --> src/main.rs:440:9
[INFO] [stderr]     |
[INFO] [stderr] 440 |     let loopback = IpAddrStruct {
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h`
[INFO] [stderr]    --> src/main.rs:445:9
[INFO] [stderr]     |
[INFO] [stderr] 445 |     let h = IpAddrS::V4(String::from("127.0.0.1"));
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lb`
[INFO] [stderr]    --> src/main.rs:446:9
[INFO] [stderr]     |
[INFO] [stderr] 446 |     let lb = IpAddrS::V6(String::from("::1"));
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_lb`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h2`
[INFO] [stderr]    --> src/main.rs:448:9
[INFO] [stderr]     |
[INFO] [stderr] 448 |     let h2  = IpAddr::V4(127, 0, 0, 1);
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_h2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ip_type`
[INFO] [stderr]    --> src/main.rs:458:10
[INFO] [stderr]     |
[INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {}
[INFO] [stderr]     |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_number`
[INFO] [stderr]    --> src/main.rs:489:9
[INFO] [stderr]     |
[INFO] [stderr] 489 |     let some_number = Some(5);
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_string`
[INFO] [stderr]    --> src/main.rs:490:9
[INFO] [stderr]     |
[INFO] [stderr] 490 |     let some_string = Some("a string");
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `absent_number`
[INFO] [stderr]    --> src/main.rs:492:9
[INFO] [stderr]     |
[INFO] [stderr] 492 |     let absent_number: Option<i32> = None;
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sum`
[INFO] [stderr]    --> src/main.rs:499:9
[INFO] [stderr]     |
[INFO] [stderr] 499 |     let sum = y.unwrap() + x;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `MAX_POINTS`
[INFO] [stderr]   --> src/main.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const MAX_POINTS: u32 = 100_000;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main_old`
[INFO] [stderr]   --> src/main.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn main_old() {    
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `another_function`
[INFO] [stderr]   --> src/main.rs:79:4
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn another_function(a0: i32, a1: i32, a2: i32) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `five`
[INFO] [stderr]   --> src/main.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn five() -> i32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/main.rs:89:4
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn plus_one(x: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `flow_control`
[INFO] [stderr]   --> src/main.rs:93:4
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn flow_control() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ownership`
[INFO] [stderr]    --> src/main.rs:146:4
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn ownership() {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `takes_ownership`
[INFO] [stderr]    --> src/main.rs:171:4
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn takes_ownership(some_string: String) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `makes_copy`
[INFO] [stderr]    --> src/main.rs:176:4
[INFO] [stderr]     |
[INFO] [stderr] 176 | fn makes_copy(some_integer: i32) {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gives_ownership`
[INFO] [stderr]    --> src/main.rs:181:4
[INFO] [stderr]     |
[INFO] [stderr] 181 | fn gives_ownership() -> String {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `takes_and_gives_back`
[INFO] [stderr]    --> src/main.rs:186:4
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn takes_and_gives_back(a_string: String) -> String {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_length`
[INFO] [stderr]    --> src/main.rs:190:4
[INFO] [stderr]     |
[INFO] [stderr] 190 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `references`
[INFO] [stderr]    --> src/main.rs:197:4
[INFO] [stderr]     |
[INFO] [stderr] 197 | fn references() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_length_ref`
[INFO] [stderr]    --> src/main.rs:209:4
[INFO] [stderr]     |
[INFO] [stderr] 209 | fn calculate_length_ref(s: &String) -> usize {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mut_references`
[INFO] [stderr]    --> src/main.rs:215:4
[INFO] [stderr]     |
[INFO] [stderr] 215 | fn mut_references() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `change`
[INFO] [stderr]    --> src/main.rs:222:4
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn change(some_string: &mut String) {
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `no_dangle`
[INFO] [stderr]    --> src/main.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 | fn no_dangle() -> String {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `word_runner`
[INFO] [stderr]    --> src/main.rs:238:4
[INFO] [stderr]     |
[INFO] [stderr] 238 | fn word_runner() {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word`
[INFO] [stderr]    --> src/main.rs:264:4
[INFO] [stderr]     |
[INFO] [stderr] 264 | fn first_word(s: &String) -> usize {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_slice`
[INFO] [stderr]    --> src/main.rs:277:4
[INFO] [stderr]     |
[INFO] [stderr] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_improved`
[INFO] [stderr]    --> src/main.rs:288:4
[INFO] [stderr]     |
[INFO] [stderr] 288 | fn first_word_improved(s: &str) -> &str {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]    --> src/main.rs:299:8
[INFO] [stderr]     |
[INFO] [stderr] 299 | struct User {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `my_structs`
[INFO] [stderr]    --> src/main.rs:306:4
[INFO] [stderr]     |
[INFO] [stderr] 306 | fn my_structs() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]    --> src/main.rs:343:4
[INFO] [stderr]     |
[INFO] [stderr] 343 | fn build_user(email: String, username: String) -> User {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_build_user`
[INFO] [stderr]    --> src/main.rs:353:4
[INFO] [stderr]     |
[INFO] [stderr] 353 | fn test_build_user() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Color`
[INFO] [stderr]    --> src/main.rs:362:8
[INFO] [stderr]     |
[INFO] [stderr] 362 | struct Color(i32, i32, i32); // structs without named fields.
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_tuple_structs`
[INFO] [stderr]    --> src/main.rs:364:4
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn test_tuple_structs() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]    --> src/main.rs:378:8
[INFO] [stderr]     |
[INFO] [stderr] 378 |     fn area(&self) -> u32 {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `square`
[INFO] [stderr]    --> src/main.rs:383:8
[INFO] [stderr]     |
[INFO] [stderr] 383 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main_old2`
[INFO] [stderr]    --> src/main.rs:388:4
[INFO] [stderr]     |
[INFO] [stderr] 388 | fn main_old2() {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rectangle_examples`
[INFO] [stderr]    --> src/main.rs:392:4
[INFO] [stderr]     |
[INFO] [stderr] 392 | fn rectangle_examples() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `testing_referencing`
[INFO] [stderr]    --> src/main.rs:407:4
[INFO] [stderr]     |
[INFO] [stderr] 407 | fn testing_referencing(rect: &Rectangle) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `IpAddrKind`
[INFO] [stderr]    --> src/main.rs:411:6
[INFO] [stderr]     |
[INFO] [stderr] 411 | enum IpAddrKind {
[INFO] [stderr]     |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IpAddrStruct`
[INFO] [stderr]    --> src/main.rs:416:8
[INFO] [stderr]     |
[INFO] [stderr] 416 | struct IpAddrStruct {  
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `IpAddrS`
[INFO] [stderr]    --> src/main.rs:421:6
[INFO] [stderr]     |
[INFO] [stderr] 421 | enum IpAddrS {
[INFO] [stderr]     |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `IpAddr`
[INFO] [stderr]    --> src/main.rs:426:6
[INFO] [stderr]     |
[INFO] [stderr] 426 | enum IpAddr {
[INFO] [stderr]     |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main_old3`
[INFO] [stderr]    --> src/main.rs:431:4
[INFO] [stderr]     |
[INFO] [stderr] 431 | fn main_old3() {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `route`
[INFO] [stderr]    --> src/main.rs:458:4
[INFO] [stderr]     |
[INFO] [stderr] 458 | fn route(ip_type: IpAddrKind) {}
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Message`
[INFO] [stderr]    --> src/main.rs:460:6
[INFO] [stderr]     |
[INFO] [stderr] 460 | enum Message {
[INFO] [stderr]     |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `QuitMessage`
[INFO] [stderr]    --> src/main.rs:467:8
[INFO] [stderr]     |
[INFO] [stderr] 467 | struct QuitMessage; // unit struct
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MoveMessage`
[INFO] [stderr]    --> src/main.rs:468:8
[INFO] [stderr]     |
[INFO] [stderr] 468 | struct MoveMessage {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `WriteMessage`
[INFO] [stderr]    --> src/main.rs:473:8
[INFO] [stderr]     |
[INFO] [stderr] 473 | struct WriteMessage(String);
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ChangeColorMessage`
[INFO] [stderr]    --> src/main.rs:474:8
[INFO] [stderr]     |
[INFO] [stderr] 474 | struct ChangeColorMessage(i32, i32, i32);
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `call`
[INFO] [stderr]    --> src/main.rs:477:8
[INFO] [stderr]     |
[INFO] [stderr] 477 |     fn call(&self) {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enum_stuff`
[INFO] [stderr]    --> src/main.rs:482:4
[INFO] [stderr]     |
[INFO] [stderr] 482 | fn enum_stuff() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `optional_enum`
[INFO] [stderr]    --> src/main.rs:488:4
[INFO] [stderr]     |
[INFO] [stderr] 488 | fn optional_enum() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Alabama`
[INFO] [stderr]    --> src/main.rs:506:5
[INFO] [stderr]     |
[INFO] [stderr] 506 |     Alabama,
[INFO] [stderr]     |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Alaska`
[INFO] [stderr]    --> src/main.rs:507:5
[INFO] [stderr]     |
[INFO] [stderr] 507 |     Alaska
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Coin`
[INFO] [stderr]    --> src/main.rs:510:6
[INFO] [stderr]     |
[INFO] [stderr] 510 | enum Coin { 
[INFO] [stderr]     |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]    --> src/main.rs:517:4
[INFO] [stderr]     |
[INFO] [stderr] 517 | fn value_in_cents(coin: Coin) -> u32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 64 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_web_thing-e2dfb8af9118b1a9
[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 `Command { std: "docker" "inspect" "41b84717e99a13f85c36e9c583ea081a225a8a2234c908d9835abb07362c6097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41b84717e99a13f85c36e9c583ea081a225a8a2234c908d9835abb07362c6097", kill_on_drop: false }`
[INFO] [stdout] 41b84717e99a13f85c36e9c583ea081a225a8a2234c908d9835abb07362c6097