[INFO] cloning repository https://github.com/chenmeng1996/rdemo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chenmeng1996/rdemo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] adbd0065df0680bfaa26b8787c56c9e816a87b0f
[INFO] checking chenmeng1996/rdemo against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] finished tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] tweaked toml for git repo https://github.com/chenmeng1996/rdemo written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/chenmeng1996/rdemo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07343faa4399a50d71bd316fceda311be46ebce367a48cec7fc5f52ca344ad15
[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" "07343faa4399a50d71bd316fceda311be46ebce367a48cec7fc5f52ca344ad15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07343faa4399a50d71bd316fceda311be46ebce367a48cec7fc5f52ca344ad15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07343faa4399a50d71bd316fceda311be46ebce367a48cec7fc5f52ca344ad15", kill_on_drop: false }`
[INFO] [stdout] 07343faa4399a50d71bd316fceda311be46ebce367a48cec7fc5f52ca344ad15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bedeb8af5b7e9a5cb92b9ddb47fb3cf2800d29f550df2c1ced5f9df6097f686
[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" "0bedeb8af5b7e9a5cb92b9ddb47fb3cf2800d29f550df2c1ced5f9df6097f686", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rdemo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:71:28
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:71:38
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:73:40
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:75:37
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:79:38
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:83:56
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:83:62
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]  --> src/enumeration_test.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddr`
[INFO] [stdout]  --> src/enumeration_test.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]   --> src/enumeration_test.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call`
[INFO] [stdout]   --> src/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point`
[INFO] [stdout]  --> src/generics_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `x`
[INFO] [stdout]  --> src/generics_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance_from_origin`
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point2`
[INFO] [stdout]   --> src/generics_test.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Point2<T, U> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mixup`
[INFO] [stdout]   --> src/generics_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn mixup<V, W>(self, other: Point2<V, W>) -> Point2<T, W> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify`
[INFO] [stdout]   --> src/trait_test.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn notify<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify1`
[INFO] [stdout]   --> src/trait_test.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn notify1(item: impl Summary) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify2`
[INFO] [stdout]   --> src/trait_test.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify3`
[INFO] [stdout]   --> src/trait_test.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify4`
[INFO] [stdout]   --> src/trait_test.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify5`
[INFO] [stdout]   --> src/trait_test.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify6`
[INFO] [stdout]   --> src/trait_test.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/trait_test.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function1`
[INFO] [stdout]   --> src/trait_test.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/trait_test.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/trait_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest`
[INFO] [stdout]  --> src/lifetime_test.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ImportantExcerpt`
[INFO] [stdout]   --> src/lifetime_test.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `level`
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `announce_and_return_part`
[INFO] [stdout]   --> src/lifetime_test.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/vector_test.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 _ => {}
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:71:28
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:71:38
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:73:40
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:75:37
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:79:38
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:83:56
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:83:62
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]    --> src/owner_scope_test.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let s1 = &mut s;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_test.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s = String::new();
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_test.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut s = "hello world".to_string();
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_test.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut s = String::from("hello world");
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/string_test.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let s3 = s1 + &s2;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/struct_test.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let user2 = build_user(String::from("a"), String::from("b"));
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/struct_test.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let user2 = User {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/struct_test.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         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/struct_test.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let origin = Point(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: `four`
[INFO] [stdout]   --> src/enumeration_test.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let four = IpAddrKind::V4;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enumeration_test.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let six = IpAddrKind::V6;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enumeration_test.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let home = IpAddr::V4(127,0,0,0);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enumeration_test.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let home = IpAddr::V6(String::from("::1"));
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/enumeration_test.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let a = Some(5);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/enumeration_test.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let b = Some("he");
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/enumeration_test.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let c: Option<i32> = None;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enumeration_test.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let six = plus_one(five);
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/enumeration_test.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let none = plus_one(None);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]  --> src/vector_test.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let v2 = vec![1, 2, 3];
[INFO] [stdout]   |             ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let f = match f {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f = match f {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let f = File::open("hello.txt").unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lifetime_test.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let i = ImportantExcerpt { part: first_sentence };
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_test.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s = String::new();
[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/string_test.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut s = "hello world".to_string();
[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/string_test.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut s = String::from("hello world");
[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/owner_scope_test.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut a = String::from("a");
[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/struct_test.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut user1 = 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/data_test.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut x = 1;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_string`
[INFO] [stdout]  --> src/string_test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn create_string() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `username`
[INFO] [stdout]  --> src/struct_test.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         username: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sign_in_count`
[INFO] [stdout]  --> src/struct_test.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         sign_in_count: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `active`
[INFO] [stdout]  --> src/struct_test.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         active: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]  --> src/enumeration_test.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddr`
[INFO] [stdout]  --> src/enumeration_test.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]   --> src/enumeration_test.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call`
[INFO] [stdout]   --> src/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_enum`
[INFO] [stdout]   --> src/enumeration_test.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn create_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_method`
[INFO] [stdout]   --> src/enumeration_test.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn enum_method() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `option_test`
[INFO] [stdout]   --> src/enumeration_test.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn option_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Coin`
[INFO] [stdout]   --> src/enumeration_test.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     enum Coin {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]   --> src/enumeration_test.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Alabama,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alaska`
[INFO] [stdout]   --> src/enumeration_test.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Alaska,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_in_cents`
[INFO] [stdout]   --> src/enumeration_test.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `one_match`
[INFO] [stdout]    --> src/enumeration_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn one_match() {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `if_let`
[INFO] [stdout]    --> src/enumeration_test.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn if_let() {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_vector`
[INFO] [stdout]  --> src/vector_test.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fn create_vector() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_vector`
[INFO] [stdout]   --> src/vector_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn read_vector() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insert_hashmap`
[INFO] [stdout]   --> src/hashmap_test.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn insert_hashmap() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unwrap_test`
[INFO] [stdout]   --> src/err_handle_test.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn unwrap_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expect_test`
[INFO] [stdout]   --> src/err_handle_test.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn expect_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_result`
[INFO] [stdout]   --> src/err_handle_test.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn return_result() -> Result<String, io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_result_2`
[INFO] [stdout]   --> src/err_handle_test.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn return_result_2() -> Result<String, io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_result_3`
[INFO] [stdout]   --> src/err_handle_test.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn return_result_3() -> Result<String, io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> src/generics_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     y: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance_from_origin`
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_i32`
[INFO] [stdout]   --> src/generics_test.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn largest_i32(list: &[i32]) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest`
[INFO] [stdout]   --> src/generics_test.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify`
[INFO] [stdout]   --> src/trait_test.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn notify<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify1`
[INFO] [stdout]   --> src/trait_test.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn notify1(item: impl Summary) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify2`
[INFO] [stdout]   --> src/trait_test.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify3`
[INFO] [stdout]   --> src/trait_test.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify4`
[INFO] [stdout]   --> src/trait_test.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify5`
[INFO] [stdout]   --> src/trait_test.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify6`
[INFO] [stdout]   --> src/trait_test.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/trait_test.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function1`
[INFO] [stdout]   --> src/trait_test.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/trait_test.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/trait_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `part`
[INFO] [stdout]   --> src/lifetime_test.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     part: &'a str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `level`
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `announce_and_return_part`
[INFO] [stdout]   --> src/lifetime_test.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 88 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking restaurant v0.1.0 (/opt/rustwide/workdir/restaurant)
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let order1 = back_of_house::Appetizer::Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let order2 = back_of_house::Appetizer::Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let order1 = back_of_house::Appetizer::Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let order2 = back_of_house::Appetizer::Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]  --> restaurant/src/front_of_house/hosting.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | 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 is never used: `take_order`
[INFO] [stdout]  --> restaurant/src/front_of_house.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn take_order() {}
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]  --> restaurant/src/front_of_house.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn server_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_payment`
[INFO] [stdout]  --> restaurant/src/front_of_house.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn take_payment() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fix_incorrect_order`
[INFO] [stdout]  --> restaurant/src/back_of_house.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn fix_incorrect_order() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cook_order`
[INFO] [stdout]  --> restaurant/src/back_of_house.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn cook_order() {}
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `seasonal_fruit`
[INFO] [stdout]   --> restaurant/src/back_of_house.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     seasonal_fruit: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]  --> restaurant/src/front_of_house/hosting.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | 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 is never used: `take_order`
[INFO] [stdout]  --> restaurant/src/front_of_house.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn take_order() {}
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]  --> restaurant/src/front_of_house.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn server_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_payment`
[INFO] [stdout]  --> restaurant/src/front_of_house.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn take_payment() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fix_incorrect_order`
[INFO] [stdout]  --> restaurant/src/back_of_house.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn fix_incorrect_order() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cook_order`
[INFO] [stdout]  --> restaurant/src/back_of_house.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn cook_order() {}
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `seasonal_fruit`
[INFO] [stdout]   --> restaurant/src/back_of_house.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     seasonal_fruit: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking restaurant-cli v0.1.0 (/opt/rustwide/workdir/cmd/restaurant-cli)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.25s
[INFO] running `Command { std: "docker" "inspect" "0bedeb8af5b7e9a5cb92b9ddb47fb3cf2800d29f550df2c1ced5f9df6097f686", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bedeb8af5b7e9a5cb92b9ddb47fb3cf2800d29f550df2c1ced5f9df6097f686", kill_on_drop: false }`
[INFO] [stdout] 0bedeb8af5b7e9a5cb92b9ddb47fb3cf2800d29f550df2c1ced5f9df6097f686