[INFO] cloning repository https://github.com/woshiljf/hellow-cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/woshiljf/hellow-cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoshiljf%2Fhellow-cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoshiljf%2Fhellow-cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70d0fbf1f7824378d37d42171b9af29e95d514e3
[INFO] checking woshiljf/hellow-cargo against master#e9182f195b8505c87c4bd055b9f6e114ccda0981 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoshiljf%2Fhellow-cargo" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/woshiljf/hellow-cargo
[INFO] finished tweaking git repo https://github.com/woshiljf/hellow-cargo
[INFO] tweaked toml for git repo https://github.com/woshiljf/hellow-cargo written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/woshiljf/hellow-cargo on toolchain e9182f195b8505c87c4bd055b9f6e114ccda0981
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/woshiljf/hellow-cargo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c3a6c0670bec2cce058f76955616ec7e24d2bab61c8fd4fada31f44a23bbd62
[INFO] running `Command { std: "docker" "start" "-a" "0c3a6c0670bec2cce058f76955616ec7e24d2bab61c8fd4fada31f44a23bbd62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c3a6c0670bec2cce058f76955616ec7e24d2bab61c8fd4fada31f44a23bbd62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c3a6c0670bec2cce058f76955616ec7e24d2bab61c8fd4fada31f44a23bbd62", kill_on_drop: false }`
[INFO] [stdout] 0c3a6c0670bec2cce058f76955616ec7e24d2bab61c8fd4fada31f44a23bbd62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 242d524e1520dee1bc07a33979b171a81e04c0e780c20e38daf9195363d4fe99
[INFO] running `Command { std: "docker" "start" "-a" "242d524e1520dee1bc07a33979b171a81e04c0e780c20e38daf9195363d4fe99", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> src/lib.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |         pub fn seat_at_table() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> src/lib.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |         pub fn seat_at_table() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_order` is never used
[INFO] [stdout]   --> src/lib.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         pub fn take_order() {}
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_order` is never used
[INFO] [stdout]   --> src/lib.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         pub fn take_order() {}
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]   --> src/lib.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         pub fn serve_order() {}
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]   --> src/lib.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         pub fn serve_order() {}
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payment` is never used
[INFO] [stdout]   --> src/lib.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |         pub fn take_payment() {}
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payment` is never used
[INFO] [stdout]   --> src/lib.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |         pub fn take_payment() {}
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | use  rand::Rng;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/enum624.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout]    |                                 ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout] 29 +    let m = Message::ChangeColor(0, (244), (233));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/enum624.rs:29:38
[INFO] [stdout]    |
[INFO] [stdout] 29 |    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout]    |                                      ^   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout] 29 +    let m = Message::ChangeColor((0), 244, (233));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/enum624.rs:29:45
[INFO] [stdout]    |
[INFO] [stdout] 29 |    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout]    |                                             ^   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout] 29 +    let m = Message::ChangeColor((0), (244), 233);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/options714.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let x = (5);
[INFO] [stdout]   |             ^ ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 3 -     let x = (5);
[INFO] [stdout] 3 +     let x = 5;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/options714.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let y = (6);
[INFO] [stdout]   |             ^ ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 4 -     let y = (6);
[INFO] [stdout] 4 +     let y = 6;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | use  rand::Rng;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/enum624.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout]    |                                 ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout] 29 +    let m = Message::ChangeColor(0, (244), (233));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/enum624.rs:29:38
[INFO] [stdout]    |
[INFO] [stdout] 29 |    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout]    |                                      ^   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout] 29 +    let m = Message::ChangeColor((0), 244, (233));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/enum624.rs:29:45
[INFO] [stdout]    |
[INFO] [stdout] 29 |    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout]    |                                             ^   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 -    let m = Message::ChangeColor((0), (244), (233));
[INFO] [stdout] 29 +    let m = Message::ChangeColor((0), (244), 233);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/options714.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let x = (5);
[INFO] [stdout]   |             ^ ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 3 -     let x = (5);
[INFO] [stdout] 3 +     let x = 5;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/options714.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let y = (6);
[INFO] [stdout]   |             ^ ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 4 -     let y = (6);
[INFO] [stdout] 4 +     let y = 6;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/struct623.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user2: User = User {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/struct623.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     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: `origin`
[INFO] [stdout]   --> src/struct623.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let origin = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/struct623.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user2: User = User {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/struct623.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut user1 = User {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/struct623.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     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: variable does not need to be mutable
[INFO] [stdout]   --> src/struct623.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user2: User = User {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `origin`
[INFO] [stdout]   --> src/struct623.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let origin = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/struct623.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut user = User {
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/struct623.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut user1 = User {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/struct623.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user2: User = User {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/struct623.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut user = User {
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip`
[INFO] [stdout]   --> src/enum624.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |    let ip =  route(IpAddrKind::V4);
[INFO] [stdout]    |        ^^ help: if this is intentional, prefix it with an underscore: `_ip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/enum624.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |    let result = x + y;
[INFO] [stdout]    |        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `absent_number`
[INFO] [stdout]  --> src/options714.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     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: `ip`
[INFO] [stdout]   --> src/enum624.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |    let ip =  route(IpAddrKind::V4);
[INFO] [stdout]    |        ^^ help: if this is intentional, prefix it with an underscore: `_ip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/enum624.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |    let result = x + y;
[INFO] [stdout]    |        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `absent_number`
[INFO] [stdout]  --> src/options714.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     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: struct `User` is never constructed
[INFO] [stdout]  --> src/struct623.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct User {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]   --> src/struct623.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Color(i32, i32, i32);
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lean_struct` is never used
[INFO] [stdout]   --> src/struct623.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn lean_struct() -> User {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/struct623.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/struct_rectangle623.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Rectangle { 
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `square`, `area`, `can_hold`, and `other_area` are never used
[INFO] [stdout]   --> src/struct_rectangle623.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn other_area(&self, name: String) -> String {  
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enter_struct` is never used
[INFO] [stdout]   --> src/struct_rectangle623.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn enter_struct() { 
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> src/struct_rectangle623.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn area(rect: &Rectangle) -> u32 { 
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enum624.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind { 
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IpAddr` is never constructed
[INFO] [stdout]  --> src/enum624.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct IpAddr { 
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enum624.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message { 
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enum624.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Message { 
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 20 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testEnum` is never used
[INFO] [stdout]   --> src/enum624.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn testEnum() { 
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `route` is never used
[INFO] [stdout]   --> src/enum624.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |  fn route(ip_kind: IpAddrKind) -> IpAddrKind { 
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testOptions` is never used
[INFO] [stdout]  --> src/options714.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn testOptions() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/match714.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Coin { 
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]   --> src/match714.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | enum UsState { 
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Alaska,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/struct623.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct User {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/match714.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum Coin1 {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 17 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]   --> src/struct623.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Color(i32, i32, i32);
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lean_struct` is never used
[INFO] [stdout]   --> src/struct623.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn lean_struct() -> User {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/struct623.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/struct_rectangle623.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Rectangle { 
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testEnum` should have a snake case name
[INFO] [stdout]   --> src/enum624.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn testEnum() { 
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case: `test_enum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `square`, `area`, `can_hold`, and `other_area` are never used
[INFO] [stdout]   --> src/struct_rectangle623.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn other_area(&self, name: String) -> String {  
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testOptions` should have a snake case name
[INFO] [stdout]  --> src/options714.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn testOptions() {
[INFO] [stdout]   |        ^^^^^^^^^^^ help: convert the identifier to snake case: `test_options`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enter_struct` is never used
[INFO] [stdout]   --> src/struct_rectangle623.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn enter_struct() { 
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> src/struct_rectangle623.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn area(rect: &Rectangle) -> u32 { 
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mainTest1` should have a snake case name
[INFO] [stdout]   --> src/match714.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn mainTest1() {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `main_test1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enum624.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind { 
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IpAddr` is never constructed
[INFO] [stdout]  --> src/enum624.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct IpAddr { 
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enum624.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message { 
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enum624.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Message { 
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 20 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testEnum` is never used
[INFO] [stdout]   --> src/enum624.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn testEnum() { 
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `route` is never used
[INFO] [stdout]   --> src/enum624.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |  fn route(ip_kind: IpAddrKind) -> IpAddrKind { 
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testOptions` is never used
[INFO] [stdout]  --> src/options714.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn testOptions() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/match714.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Coin { 
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]   --> src/match714.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | enum UsState { 
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Alaska,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/match714.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum Coin1 {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 17 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testEnum` should have a snake case name
[INFO] [stdout]   --> src/enum624.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn testEnum() { 
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case: `test_enum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testOptions` should have a snake case name
[INFO] [stdout]  --> src/options714.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn testOptions() {
[INFO] [stdout]   |        ^^^^^^^^^^^ help: convert the identifier to snake case: `test_options`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mainTest1` should have a snake case name
[INFO] [stdout]   --> src/match714.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn mainTest1() {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `main_test1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "242d524e1520dee1bc07a33979b171a81e04c0e780c20e38daf9195363d4fe99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "242d524e1520dee1bc07a33979b171a81e04c0e780c20e38daf9195363d4fe99", kill_on_drop: false }`
[INFO] [stdout] 242d524e1520dee1bc07a33979b171a81e04c0e780c20e38daf9195363d4fe99