[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] 15b574d454a9c9bcb83d9fe9e3bae2034701cbe7
[INFO] testing chenmeng1996/rdemo against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-5-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abnf-core v0.5.0
[INFO] [stderr]   Downloaded abnf v0.12.0
[INFO] [stderr]   Downloaded mail-builder v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c8e57d9473d40c1c3feab4cba57c8541f8132a1f09ec42f6536f62dfd46be12
[INFO] running `Command { std: "docker" "start" "-a" "5c8e57d9473d40c1c3feab4cba57c8541f8132a1f09ec42f6536f62dfd46be12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c8e57d9473d40c1c3feab4cba57c8541f8132a1f09ec42f6536f62dfd46be12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c8e57d9473d40c1c3feab4cba57c8541f8132a1f09ec42f6536f62dfd46be12", kill_on_drop: false }`
[INFO] [stdout] 5c8e57d9473d40c1c3feab4cba57c8541f8132a1f09ec42f6536f62dfd46be12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49625fec1ed745445ee95b575e3a7ddccda5f1accde7610da5241fdd98d92f9a
[INFO] running `Command { std: "docker" "start" "-a" "49625fec1ed745445ee95b575e3a7ddccda5f1accde7610da5241fdd98d92f9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rdemo v0.1.0 (/opt/rustwide/workdir)
[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 `IpAddrKind` is never used
[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 `IpAddr` is never used
[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 `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.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/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[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: method `x` is never used
[INFO] [stdout]  --> src/generics_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 6 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[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: method `mixup` is never used
[INFO] [stdout]   --> src/generics_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T, U> Point2<T, U> {
[INFO] [stdout]    | ----------------------- method in this implementation
[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 `notify` is never used
[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 `notify1` is never used
[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 `notify2` is never used
[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 `notify3` is never used
[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 `notify4` is never used
[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 `notify5` is never used
[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 `notify6` is never used
[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 `some_function` is never used
[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 `some_function1` is never used
[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 `returns_summarizable` is never used
[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 `Pair` is never constructed
[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 `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[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 `ImportantExcerpt` is never constructed
[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: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "49625fec1ed745445ee95b575e3a7ddccda5f1accde7610da5241fdd98d92f9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49625fec1ed745445ee95b575e3a7ddccda5f1accde7610da5241fdd98d92f9a", kill_on_drop: false }`
[INFO] [stdout] 49625fec1ed745445ee95b575e3a7ddccda5f1accde7610da5241fdd98d92f9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3eb7cb6dff8dc9782d7c6f227f535d0a4b713b621d919d0917a810120d94b66
[INFO] running `Command { std: "docker" "start" "-a" "e3eb7cb6dff8dc9782d7c6f227f535d0a4b713b621d919d0917a810120d94b66", kill_on_drop: false }`
[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 `IpAddrKind` is never used
[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 `IpAddr` is never used
[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 `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.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/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[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: method `x` is never used
[INFO] [stdout]  --> src/generics_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 6 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[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: method `mixup` is never used
[INFO] [stdout]   --> src/generics_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T, U> Point2<T, U> {
[INFO] [stdout]    | ----------------------- method in this implementation
[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 `notify` is never used
[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 `notify1` is never used
[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 `notify2` is never used
[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 `notify3` is never used
[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 `notify4` is never used
[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 `notify5` is never used
[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 `notify6` is never used
[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 `some_function` is never used
[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 `some_function1` is never used
[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 `returns_summarizable` is never used
[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 `Pair` is never constructed
[INFO] [stdout]    --> src/trait_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rdemo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[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 `ImportantExcerpt` is never constructed
[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: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[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]    = note: `#[warn(unused_mut)]` on by default
[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]     = note: `#[warn(unused_variables)]` on by default
[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: 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] 
[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: unused variable: `s3`
[INFO] [stdout]   --> src/string_test.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         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: 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: 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: 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: 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: 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: `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: `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] 
[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: `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: function `create_string` is never used
[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: fields `username`, `sign_in_count`, and `active` are never read
[INFO] [stdout]  --> src/struct_test.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct User {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 4 |         username: String,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 5 |         email: String,
[INFO] [stdout] 6 |         sign_in_count: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 7 |         active: bool,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[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 `IpAddr` is never used
[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 `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.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/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_enum` is never used
[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 `enum_method` is never used
[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 `option_test` is never used
[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 `Coin` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     enum Coin {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stdout]   --> src/enumeration_test.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     enum UsState {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] 59 |         Alabama,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 60 |         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: function `value_in_cents` is never used
[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 `one_match` is never used
[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 `if_let` is never used
[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 `create_vector` is never used
[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 `read_vector` is never used
[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 `insert_hashmap` is never used
[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 `unwrap_test` is never used
[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 `expect_test` is never used
[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 `return_result` is never used
[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 `return_result_2` is never used
[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 `return_result_3` is never used
[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 `y` is never read
[INFO] [stdout]  --> src/generics_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 2 |     x: T,
[INFO] [stdout] 3 |     y: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_i32` is never used
[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 `largest` is never used
[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 `notify` is never used
[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 `notify1` is never used
[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 `notify2` is never used
[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 `notify3` is never used
[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 `notify4` is never used
[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 `notify5` is never used
[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 `notify6` is never used
[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 `some_function` is never used
[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 `some_function1` is never used
[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 `returns_summarizable` is never used
[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 `Pair` is never constructed
[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 `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]   --> src/lifetime_test.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 14 |     part: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 84 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "e3eb7cb6dff8dc9782d7c6f227f535d0a4b713b621d919d0917a810120d94b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3eb7cb6dff8dc9782d7c6f227f535d0a4b713b621d919d0917a810120d94b66", kill_on_drop: false }`
[INFO] [stdout] e3eb7cb6dff8dc9782d7c6f227f535d0a4b713b621d919d0917a810120d94b66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84dfecba48f27b7c5682cca9a1fa45e2d77fe5bd2c3db4942735cf7532b9b678
[INFO] running `Command { std: "docker" "start" "-a" "84dfecba48f27b7c5682cca9a1fa45e2d77fe5bd2c3db4942735cf7532b9b678", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:71:28
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/trait_test.rs:71:38
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:73:40
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stderr]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/trait_test.rs:73:50
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stderr]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:75:16
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stderr]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/trait_test.rs:75:37
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:79:38
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stderr]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:80:16
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stderr]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/trait_test.rs:83:56
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stderr]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/trait_test.rs:83:62
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/trait_test.rs:85:25
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/trait_test.rs:85:31
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stderr]    |                               ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/enumeration_test.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddr` is never used
[INFO] [stderr]  --> src/enumeration_test.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum IpAddr {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Message` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:12:6
[INFO] [stderr]    |
[INFO] [stderr] 12 | enum Message {
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `call` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl Message {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 21 |     fn call(&self) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point` is never constructed
[INFO] [stderr]  --> src/generics_test.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Point<T> {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `x` is never used
[INFO] [stderr]  --> src/generics_test.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | impl<T> Point<T> {
[INFO] [stderr]   | ---------------- method in this implementation
[INFO] [stderr] 6 |     fn x(&self) -> &T {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: method `distance_from_origin` is never used
[INFO] [stderr]   --> src/generics_test.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl Point<f32> {
[INFO] [stderr]    | --------------- method in this implementation
[INFO] [stderr] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point2` is never constructed
[INFO] [stderr]   --> src/generics_test.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | struct Point2<T, U> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `mixup` is never used
[INFO] [stderr]   --> src/generics_test.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl<T, U> Point2<T, U> {
[INFO] [stderr]    | ----------------------- method in this implementation
[INFO] [stderr] 21 |     fn mixup<V, W>(self, other: Point2<V, W>) -> Point2<T, W> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify` is never used
[INFO] [stderr]   --> src/trait_test.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub fn notify<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify1` is never used
[INFO] [stderr]   --> src/trait_test.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub fn notify1(item: impl Summary) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify2` is never used
[INFO] [stderr]   --> src/trait_test.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify3` is never used
[INFO] [stderr]   --> src/trait_test.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify4` is never used
[INFO] [stderr]   --> src/trait_test.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify5` is never used
[INFO] [stderr]   --> src/trait_test.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify6` is never used
[INFO] [stderr]   --> src/trait_test.rs:80:8
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `some_function` is never used
[INFO] [stderr]   --> src/trait_test.rs:83:4
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `some_function1` is never used
[INFO] [stderr]   --> src/trait_test.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `returns_summarizable` is never used
[INFO] [stderr]   --> src/trait_test.rs:95:4
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn returns_summarizable() -> impl Summary {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Pair` is never constructed
[INFO] [stderr]    --> src/trait_test.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 | struct Pair<T> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/trait_test.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 110 | impl<T> Pair<T> {
[INFO] [stderr]     | --------------- associated function in this implementation
[INFO] [stderr] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `cmp_display` is never used
[INFO] [stderr]    --> src/trait_test.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stderr]     | ------------------------------------- method in this implementation
[INFO] [stderr] 121 |     fn cmp_display(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest` is never used
[INFO] [stderr]  --> src/lifetime_test.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stderr]   --> src/lifetime_test.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stderr]   --> src/lifetime_test.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stderr]    | ----------------------------- methods in this implementation
[INFO] [stderr] 18 |     // 
[INFO] [stderr] 19 |     fn level(&self) -> i32 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rdemo` (lib) generated 37 warnings (run `cargo fix --lib -p rdemo` to apply 12 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/owner_scope_test.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut a = String::from("a");
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]    --> src/owner_scope_test.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         let s1 = &mut s;
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_test.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let mut s = String::new();
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_test.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut s = "hello world".to_string();
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_test.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut s = String::from("hello world");
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_test.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let mut s = String::new();
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_test.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut s = "hello world".to_string();
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_test.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut s = String::from("hello world");
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s3`
[INFO] [stderr]   --> src/string_test.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let s3 = s1 + &s2;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/struct_test.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let user2 = build_user(String::from("a"), String::from("b"));
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/struct_test.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let user2 = User {
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/struct_test.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut user1 = User {
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/struct_test.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let black = Color(0, 0, 0);
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/struct_test.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let origin = Point(0, 0, 0);
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/data_test.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut x = 1;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enumeration_test.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let four = IpAddrKind::V4;
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enumeration_test.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let six = IpAddrKind::V6;
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enumeration_test.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let home = IpAddr::V4(127,0,0,0);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enumeration_test.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let home = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/enumeration_test.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let a = Some(5);
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/enumeration_test.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let b = Some("he");
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/enumeration_test.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let c: Option<i32> = None;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enumeration_test.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let six = plus_one(five);
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/enumeration_test.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let none = plus_one(None);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stderr]  --> src/vector_test.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 |         let v2 = vec![1, 2, 3];
[INFO] [stderr]   |             ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/vector_test.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 _ => {}
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let f = match f {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let f = match f {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:71:28
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lifetime_test.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let i = ImportantExcerpt { part: first_sentence };
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_string` is never used
[INFO] [stderr]  --> src/string_test.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |     fn create_string() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `username`, `sign_in_count`, and `active` are never read
[INFO] [stderr]  --> src/struct_test.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     struct User {
[INFO] [stderr]   |            ---- fields in this struct
[INFO] [stderr] 4 |         username: String,
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr] 5 |         email: String,
[INFO] [stderr] 6 |         sign_in_count: u64,
[INFO] [stderr]   |         ^^^^^^^^^^^^^
[INFO] [stderr] 7 |         active: bool,
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/enumeration_test.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_enum` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn create_enum() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `enum_method` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn enum_method() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `option_test` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn option_test() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |     enum Coin {
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stderr]   --> src/enumeration_test.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     enum UsState {
[INFO] [stderr]    |          ------- variants in this enum
[INFO] [stderr] 59 |         Alabama,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 60 |         Alaska,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `value_in_cents` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `one_match` is never used
[INFO] [stderr]    --> src/enumeration_test.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn one_match() {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `if_let` is never used
[INFO] [stderr]    --> src/enumeration_test.rs:113:8
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn if_let() {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_vector` is never used
[INFO] [stderr]  --> src/vector_test.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 |     fn create_vector() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_vector` is never used
[INFO] [stderr]   --> src/vector_test.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn read_vector() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `insert_hashmap` is never used
[INFO] [stderr]   --> src/hashmap_test.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn insert_hashmap() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `unwrap_test` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn unwrap_test() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `expect_test` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn expect_test() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_result` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn return_result() -> Result<String, io::Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_result_2` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn return_result_2() -> Result<String, io::Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_result_3` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:68:8
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn return_result_3() -> Result<String, io::Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `y` is never read
[INFO] [stderr]  --> src/generics_test.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Point<T> {
[INFO] [stderr]   |        ----- field in this struct
[INFO] [stderr] 2 |     x: T,
[INFO] [stderr] 3 |     y: T,
[INFO] [stderr]   |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `largest_i32` is never used
[INFO] [stderr]   --> src/generics_test.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn largest_i32(list: &[i32]) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `largest` is never used
[INFO] [stderr]   --> src/generics_test.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `part` is never read
[INFO] [stderr]   --> src/lifetime_test.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ---------------- field in this struct
[INFO] [stderr] 14 |     part: &'a str,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rdemo` (lib test) generated 84 warnings (29 duplicates) (run `cargo fix --lib -p rdemo --tests` to apply 31 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rdemo-511a0527993ba8e2)
[INFO] [stdout] 
[INFO] [stdout] running 56 tests
[INFO] [stdout] test bytes_test::tests::print_char111 ... ok
[INFO] [stdout] test bytes_test::tests::hex_test ... ok
[INFO] [stdout] test data_test::tests::for_test ... ok
[INFO] [stdout] test data_test::tests::array ... ok
[INFO] [stdout] test data_test::tests::mut_var ... ok
[INFO] [stdout] test data_test::tests::shadow_var ... ok
[INFO] [stdout] test data_test::tests::transform_var ... ok
[INFO] [stdout] test data_test::tests::tuple ... ok
[INFO] [stdout] test data_test::tests::while_test ... ok
[INFO] [stdout] test enumeration_test::tests::default_match ... ok
[INFO] [stdout] test enumeration_test::tests::plus_one_test ... ok
[INFO] [stdout] test generics_test::tests::test_mixup ... ok
[INFO] [stdout] test hashmap_test::tests::create_hashmap ... ok
[INFO] [stdout] test hashmap_test::tests::insert_when_absent ... ok
[INFO] [stdout] test owner_scope_test::tests::borrow_and_return_test ... ok
[INFO] [stdout] test lifetime_test::tests::lifetime_test1 ... ok
[INFO] [stdout] test owner_scope_test::tests::copy_test ... ok
[INFO] [stdout] test lifetime_test::tests::lifetime_test ... ok
[INFO] [stdout] test hashmap_test::tests::traverse_hashmap ... ok
[INFO] [stdout] test owner_scope_test::tests::clone_test ... ok
[INFO] [stdout] test hashmap_test::tests::read_hashmap ... ok
[INFO] [stdout] test data_test::tests::loop_test ... ok
[INFO] [stdout] test generics_test::tests::test_point ... ok
[INFO] [stdout] test hashmap_test::tests::update_when_exist ... ok
[INFO] [stdout] test owner_scope_test::tests::string_slice ... ok
[INFO] [stdout] test owner_scope_test::tests::first_world_better_test ... ok
[INFO] [stdout] test owner_scope_test::tests::first_world_test ... ok
[INFO] [stdout] test owner_scope_test::tests::move_test ... ok
[INFO] [stdout] test owner_scope_test::tests::mut_reference_test ... ok
[INFO] [stdout] test owner_scope_test::tests::my_test ... ok
[INFO] [stdout] test owner_scope_test::tests::take_owner_ship_test ... ok
[INFO] [stdout] test slice_test::tests::first_word_test ... ok
[INFO] [stdout] test slice_test::tests::first_word_test_v2 ... ok
[INFO] [stdout] test slice_test::tests::array_and_slice ... ok
[INFO] [stdout] test owner_scope_test::tests::unmut_reference_test ... ok
[INFO] [stdout] test slice_test::tests::string_slice ... ok
[INFO] [stdout] test string_test::tests::for1 ... ok
[INFO] [stdout] test slice_test::tests::traverse_slice ... ok
[INFO] [stdout] test string_test::tests::for2 ... ok
[INFO] [stdout] test string_test::tests::for3 ... ok
[INFO] [stdout] test string_test::tests::join_string2 ... ok
[INFO] [stdout] test struct_test::tests::create_struct ... ok
[INFO] [stdout] test struct_test::tests::create_struct_from_other_struct ... ok
[INFO] [stdout] test struct_test::tests::train_test4 ... ok
[INFO] [stdout] test struct_test::tests::trait_test ... ok
[INFO] [stdout] test struct_test::tests::associated_function_test ... ok
[INFO] [stdout] test string_test::tests::join_string1 ... ok
[INFO] [stdout] test string_test::tests::for4 ... ok
[INFO] [stdout] test struct_test::tests::create_tuple_struct ... ok
[INFO] [stdout] test err_handle_test::tests::multi_err_test ... FAILED
[INFO] [stdout] test struct_test::tests::trait_test2 ... ok
[INFO] [stdout] test struct_test::tests::trait_test3 ... ok
[INFO] [stdout] test trait_test::tests::summary_test ... ok
[INFO] [stdout] test vector_test::tests::store_different_type_in_vector ... ok
[INFO] [stdout] test vector_test::tests::traverse_vector ... ok
[INFO] [stdout] test err_handle_test::tests::result_test ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- err_handle_test::tests::multi_err_test stdout ----
[INFO] [stdout] thread 'err_handle_test::tests::multi_err_test' panicked at src/err_handle_test.rs:28:31:
[INFO] [stdout] Problem creating the file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55919d30f11c - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55919d30f11c - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55919d30f11c - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55919d30f11c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55919d338fa0 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55919d338fa0 - core::fmt::write::h3a39390d8560d9c9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55919d30cacf - std::io::Write::write_fmt::h040b369f3a0f9cbc
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
[INFO] [stdout]    7:     0x55919d30ef04 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55919d30ef04 - std::sys_common::backtrace::print::h23a2d212c6fff936
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55919d310bc7 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
[INFO] [stdout]   10:     0x55919d3108b3 - std::panicking::default_hook::h6038f2eba384e475
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55919d2e12c7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0ad024c9bdc6d768
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   12:     0x55919d2e12c7 - test::test_main::{{closure}}::h7500b54257359db6
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55919d3111d8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1f8f335eaa9cfaee
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   14:     0x55919d3111d8 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55919d310f2e - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55919d30f5e6 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stdout]   17:     0x55919d310c92 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55919d28bcf5 - core::panicking::panic_fmt::hbf0e066aabfa482c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55919d29fbdf - rdemo::err_handle_test::tests::multi_err_test::he13b5c26c8b36785
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:28:31
[INFO] [stdout]   20:     0x55919d29f9c7 - rdemo::err_handle_test::tests::multi_err_test::{{closure}}::hd80f93a9e20ee694
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:21:24
[INFO] [stdout]   21:     0x55919d2aa206 - core::ops::function::FnOnce::call_once::h81ffc4844501beca
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x55919d2e691f - core::ops::function::FnOnce::call_once::h2b5d431d5046312d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55919d2e691f - test::__rust_begin_short_backtrace::h7714669af176e207
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:628:18
[INFO] [stdout]   24:     0x55919d2e5935 - test::run_test_in_process::{{closure}}::h85218797dcbcec12
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:60
[INFO] [stdout]   25:     0x55919d2e5935 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h76c106ea31c14d7b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x55919d2e5935 - std::panicking::try::do_call::h3bd5d0f6620ee946
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   27:     0x55919d2e5935 - std::panicking::try::h232e535e4744fe31
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   28:     0x55919d2e5935 - std::panic::catch_unwind::h3ce3bd6ca8dbac68
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   29:     0x55919d2e5935 - test::run_test_in_process::hc97b257c9621286a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:27
[INFO] [stdout]   30:     0x55919d2e5935 - test::run_test::{{closure}}::h2aa798823a438d38
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:574:43
[INFO] [stdout]   31:     0x55919d2adbf6 - test::run_test::{{closure}}::h87d231c78fb59832
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:602:41
[INFO] [stdout]   32:     0x55919d2adbf6 - std::sys_common::backtrace::__rust_begin_short_backtrace::he6df152596625789
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:154:18
[INFO] [stdout]   33:     0x55919d2b2ca7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha94be15d1e0acf36
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   34:     0x55919d2b2ca7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9dc6bd6372f16606
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x55919d2b2ca7 - std::panicking::try::do_call::h9057517f80303cd4
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   36:     0x55919d2b2ca7 - std::panicking::try::he3a30b11ee45340c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   37:     0x55919d2b2ca7 - std::panic::catch_unwind::h410458cfd3528b8b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   38:     0x55919d2b2ca7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h72ac3bdb567b737b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   39:     0x55919d2b2ca7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h38f34da3654a8344
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x55919d315c65 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc7eafaff61e32df9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   41:     0x55919d315c65 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ba4a5de48dd2304
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   42:     0x55919d315c65 - std::sys::unix::thread::Thread::new::thread_start::he469335aef763e45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7f340c2beac3 - <unknown>
[INFO] [stdout]   44:     0x7f340c34fbf4 - __clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- err_handle_test::tests::result_test stdout ----
[INFO] [stdout] thread 'err_handle_test::tests::result_test' panicked at src/err_handle_test.rs:15:17:
[INFO] [stdout] Problem opening the file: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55919d30f11c - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55919d30f11c - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55919d30f11c - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55919d30f11c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55919d338fa0 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55919d338fa0 - core::fmt::write::h3a39390d8560d9c9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55919d30cacf - std::io::Write::write_fmt::h040b369f3a0f9cbc
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
[INFO] [stdout]    7:     0x55919d30ef04 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55919d30ef04 - std::sys_common::backtrace::print::h23a2d212c6fff936
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55919d310bc7 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
[INFO] [stdout]   10:     0x55919d3108b3 - std::panicking::default_hook::h6038f2eba384e475
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55919d2e12c7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0ad024c9bdc6d768
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   12:     0x55919d2e12c7 - test::test_main::{{closure}}::h7500b54257359db6
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55919d3111d8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1f8f335eaa9cfaee
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   14:     0x55919d3111d8 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55919d310f2e - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55919d30f5e6 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stdout]   17:     0x55919d310c92 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55919d28bcf5 - core::panicking::panic_fmt::hbf0e066aabfa482c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55919d29f98e - rdemo::err_handle_test::tests::result_test::h51de41a423117234
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:15:17
[INFO] [stdout]   20:     0x55919d29f877 - rdemo::err_handle_test::tests::result_test::{{closure}}::hc2832e08a257eddc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:10:21
[INFO] [stdout]   21:     0x55919d2a9ce6 - core::ops::function::FnOnce::call_once::h3d901744040e14a7
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x55919d2e691f - core::ops::function::FnOnce::call_once::h2b5d431d5046312d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55919d2e691f - test::__rust_begin_short_backtrace::h7714669af176e207
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:628:18
[INFO] [stdout]   24:     0x55919d2e5935 - test::run_test_in_process::{{closure}}::h85218797dcbcec12
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:60
[INFO] [stdout]   25:     0x55919d2e5935 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h76c106ea31c14d7b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x55919d2e5935 - std::panicking::try::do_call::h3bd5d0f6620ee946
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   27:     0x55919d2e5935 - std::panicking::try::h232e535e4744fe31
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   28:     0x55919d2e5935 - std::panic::catch_unwind::h3ce3bd6ca8dbac68
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   29:     0x55919d2e5935 - test::run_test_in_process::hc97b257c9621286a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:27
[INFO] [stdout]   30:     0x55919d2e5935 - test::run_test::{{closure}}::h2aa798823a438d38
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:574:43
[INFO] [stdout]   31:     0x55919d2adbf6 - test::run_test::{{closure}}::h87d231c78fb59832
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:602:41
[INFO] [stdout]   32:     0x55919d2adbf6 - std::sys_common::backtrace::__rust_begin_short_backtrace::he6df152596625789
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:154:18
[INFO] [stdout]   33:     0x55919d2b2ca7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha94be15d1e0acf36
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   34:     0x55919d2b2ca7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9dc6bd6372f16606
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x55919d2b2ca7 - std::panicking::try::do_call::h9057517f80303cd4
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   36:     0x55919d2b2ca7 - std::panicking::try::he3a30b11ee45340c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   37:     0x55919d2b2ca7 - std::panic::catch_unwind::h410458cfd3528b8b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   38:     0x55919d2b2ca7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h72ac3bdb567b737b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   39:     0x55919d2b2ca7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h38f34da3654a8344
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x55919d315c65 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc7eafaff61e32df9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   41:     0x55919d315c65 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ba4a5de48dd2304
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   42:     0x55919d315c65 - std::sys::unix::thread::Thread::new::thread_start::he469335aef763e45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7f340c2beac3 - <unknown>
[INFO] [stdout]   44:     0x7f340c34fbf4 - __clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     err_handle_test::tests::multi_err_test
[INFO] [stdout]     err_handle_test::tests::result_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 54 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "84dfecba48f27b7c5682cca9a1fa45e2d77fe5bd2c3db4942735cf7532b9b678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84dfecba48f27b7c5682cca9a1fa45e2d77fe5bd2c3db4942735cf7532b9b678", kill_on_drop: false }`
[INFO] [stdout] 84dfecba48f27b7c5682cca9a1fa45e2d77fe5bd2c3db4942735cf7532b9b678
[INFO] testing chenmeng1996/rdemo against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "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-5-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d6a5b4f24097edd0a40105dbe1068fcd45251227041233e19a57fc6fe2f7145
[INFO] running `Command { std: "docker" "start" "-a" "1d6a5b4f24097edd0a40105dbe1068fcd45251227041233e19a57fc6fe2f7145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d6a5b4f24097edd0a40105dbe1068fcd45251227041233e19a57fc6fe2f7145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d6a5b4f24097edd0a40105dbe1068fcd45251227041233e19a57fc6fe2f7145", kill_on_drop: false }`
[INFO] [stdout] 1d6a5b4f24097edd0a40105dbe1068fcd45251227041233e19a57fc6fe2f7145
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af5741c4a4bac8d535a0eff913b9ddacaab3ab6474383cacc7fff43bec3a844a
[INFO] running `Command { std: "docker" "start" "-a" "af5741c4a4bac8d535a0eff913b9ddacaab3ab6474383cacc7fff43bec3a844a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rdemo v0.1.0 (/opt/rustwide/workdir)
[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 `IpAddrKind` is never used
[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 `IpAddr` is never used
[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 `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.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/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[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: method `x` is never used
[INFO] [stdout]  --> src/generics_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 6 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[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: method `mixup` is never used
[INFO] [stdout]   --> src/generics_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T, U> Point2<T, U> {
[INFO] [stdout]    | ----------------------- method in this implementation
[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 `notify` is never used
[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 `notify1` is never used
[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 `notify2` is never used
[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 `notify3` is never used
[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 `notify4` is never used
[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 `notify5` is never used
[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 `notify6` is never used
[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 `some_function` is never used
[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 `some_function1` is never used
[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 `returns_summarizable` is never used
[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 `Pair` is never constructed
[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 `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[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 `ImportantExcerpt` is never constructed
[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: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "af5741c4a4bac8d535a0eff913b9ddacaab3ab6474383cacc7fff43bec3a844a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af5741c4a4bac8d535a0eff913b9ddacaab3ab6474383cacc7fff43bec3a844a", kill_on_drop: false }`
[INFO] [stdout] af5741c4a4bac8d535a0eff913b9ddacaab3ab6474383cacc7fff43bec3a844a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fadf706fb20860911bd86df5022040b404bdd17050a2c877eb85d7a06a9bd35
[INFO] running `Command { std: "docker" "start" "-a" "1fadf706fb20860911bd86df5022040b404bdd17050a2c877eb85d7a06a9bd35", kill_on_drop: false }`
[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 `IpAddrKind` is never used
[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 `IpAddr` is never used
[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 `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.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/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[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: method `x` is never used
[INFO] [stdout]  --> src/generics_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 6 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[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: method `mixup` is never used
[INFO] [stdout]   --> src/generics_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T, U> Point2<T, U> {
[INFO] [stdout]    | ----------------------- method in this implementation
[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 `notify` is never used
[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 `notify1` is never used
[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 `notify2` is never used
[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 `notify3` is never used
[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 `notify4` is never used
[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 `notify5` is never used
[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 `notify6` is never used
[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 `some_function` is never used
[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 `some_function1` is never used
[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 `returns_summarizable` is never used
[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 `Pair` is never constructed
[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 `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rdemo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[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 `ImportantExcerpt` is never constructed
[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: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[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]    = note: `#[warn(unused_mut)]` on by default
[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]     = note: `#[warn(unused_variables)]` on by default
[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: 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] 
[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: unused variable: `s3`
[INFO] [stdout]   --> src/string_test.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         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: 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: 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: 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: 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: 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: `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: `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] 
[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: `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: function `create_string` is never used
[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: fields `username`, `sign_in_count`, and `active` are never read
[INFO] [stdout]  --> src/struct_test.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct User {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 4 |         username: String,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 5 |         email: String,
[INFO] [stdout] 6 |         sign_in_count: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 7 |         active: bool,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[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 `IpAddr` is never used
[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 `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.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/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_enum` is never used
[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 `enum_method` is never used
[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 `option_test` is never used
[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 `Coin` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     enum Coin {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stdout]   --> src/enumeration_test.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     enum UsState {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] 59 |         Alabama,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 60 |         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: function `value_in_cents` is never used
[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 `one_match` is never used
[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 `if_let` is never used
[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 `create_vector` is never used
[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 `read_vector` is never used
[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 `insert_hashmap` is never used
[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 `unwrap_test` is never used
[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 `expect_test` is never used
[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 `return_result` is never used
[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 `return_result_2` is never used
[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 `return_result_3` is never used
[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 `y` is never read
[INFO] [stdout]  --> src/generics_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 2 |     x: T,
[INFO] [stdout] 3 |     y: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_i32` is never used
[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 `largest` is never used
[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 `notify` is never used
[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 `notify1` is never used
[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 `notify2` is never used
[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 `notify3` is never used
[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 `notify4` is never used
[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 `notify5` is never used
[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 `notify6` is never used
[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 `some_function` is never used
[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 `some_function1` is never used
[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 `returns_summarizable` is never used
[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 `Pair` is never constructed
[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 `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]   --> src/lifetime_test.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 14 |     part: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 84 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "1fadf706fb20860911bd86df5022040b404bdd17050a2c877eb85d7a06a9bd35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fadf706fb20860911bd86df5022040b404bdd17050a2c877eb85d7a06a9bd35", kill_on_drop: false }`
[INFO] [stdout] 1fadf706fb20860911bd86df5022040b404bdd17050a2c877eb85d7a06a9bd35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 156a68bbec36df3606465fef055b5faea15e8023490ca76b6a4b5c86bca98f33
[INFO] running `Command { std: "docker" "start" "-a" "156a68bbec36df3606465fef055b5faea15e8023490ca76b6a4b5c86bca98f33", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:71:28
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/trait_test.rs:71:38
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:73:40
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stderr]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/trait_test.rs:73:50
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stderr]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:75:16
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stderr]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/trait_test.rs:75:37
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:79:38
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stderr]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:80:16
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stderr]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/trait_test.rs:83:56
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stderr]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/trait_test.rs:83:62
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/trait_test.rs:85:25
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/trait_test.rs:85:31
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stderr]    |                               ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/enumeration_test.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddr` is never used
[INFO] [stderr]  --> src/enumeration_test.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum IpAddr {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Message` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:12:6
[INFO] [stderr]    |
[INFO] [stderr] 12 | enum Message {
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `call` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl Message {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 21 |     fn call(&self) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point` is never constructed
[INFO] [stderr]  --> src/generics_test.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Point<T> {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `x` is never used
[INFO] [stderr]  --> src/generics_test.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | impl<T> Point<T> {
[INFO] [stderr]   | ---------------- method in this implementation
[INFO] [stderr] 6 |     fn x(&self) -> &T {
[INFO] [stderr]   |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: method `distance_from_origin` is never used
[INFO] [stderr]   --> src/generics_test.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl Point<f32> {
[INFO] [stderr]    | --------------- method in this implementation
[INFO] [stderr] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point2` is never constructed
[INFO] [stderr]   --> src/generics_test.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | struct Point2<T, U> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `mixup` is never used
[INFO] [stderr]   --> src/generics_test.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl<T, U> Point2<T, U> {
[INFO] [stderr]    | ----------------------- method in this implementation
[INFO] [stderr] 21 |     fn mixup<V, W>(self, other: Point2<V, W>) -> Point2<T, W> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify` is never used
[INFO] [stderr]   --> src/trait_test.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub fn notify<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify1` is never used
[INFO] [stderr]   --> src/trait_test.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 65 | pub fn notify1(item: impl Summary) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify2` is never used
[INFO] [stderr]   --> src/trait_test.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify3` is never used
[INFO] [stderr]   --> src/trait_test.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify4` is never used
[INFO] [stderr]   --> src/trait_test.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify5` is never used
[INFO] [stderr]   --> src/trait_test.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify6` is never used
[INFO] [stderr]   --> src/trait_test.rs:80:8
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `some_function` is never used
[INFO] [stderr]   --> src/trait_test.rs:83:4
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `some_function1` is never used
[INFO] [stderr]   --> src/trait_test.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `returns_summarizable` is never used
[INFO] [stderr]   --> src/trait_test.rs:95:4
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn returns_summarizable() -> impl Summary {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Pair` is never constructed
[INFO] [stderr]    --> src/trait_test.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 | struct Pair<T> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/trait_test.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 110 | impl<T> Pair<T> {
[INFO] [stderr]     | --------------- associated function in this implementation
[INFO] [stderr] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `cmp_display` is never used
[INFO] [stderr]    --> src/trait_test.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stderr]     | ------------------------------------- method in this implementation
[INFO] [stderr] 121 |     fn cmp_display(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest` is never used
[INFO] [stderr]  --> src/lifetime_test.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stderr]   --> src/lifetime_test.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stderr]   --> src/lifetime_test.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stderr]    | ----------------------------- methods in this implementation
[INFO] [stderr] 18 |     // 
[INFO] [stderr] 19 |     fn level(&self) -> i32 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rdemo` (lib) generated 37 warnings (run `cargo fix --lib -p rdemo` to apply 12 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/owner_scope_test.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut a = String::from("a");
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]    --> src/owner_scope_test.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         let s1 = &mut s;
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_test.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let mut s = String::new();
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_test.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut s = "hello world".to_string();
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_test.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut s = String::from("hello world");
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_test.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let mut s = String::new();
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_test.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut s = "hello world".to_string();
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_test.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut s = String::from("hello world");
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s3`
[INFO] [stderr]   --> src/string_test.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let s3 = s1 + &s2;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/struct_test.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let user2 = build_user(String::from("a"), String::from("b"));
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/struct_test.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let user2 = User {
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/struct_test.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut user1 = User {
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/struct_test.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let black = Color(0, 0, 0);
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> src/struct_test.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let origin = Point(0, 0, 0);
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/data_test.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut x = 1;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enumeration_test.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let four = IpAddrKind::V4;
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enumeration_test.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let six = IpAddrKind::V6;
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enumeration_test.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let home = IpAddr::V4(127,0,0,0);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enumeration_test.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let home = IpAddr::V6(String::from("::1"));
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/enumeration_test.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let a = Some(5);
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/enumeration_test.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let b = Some("he");
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/enumeration_test.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let c: Option<i32> = None;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enumeration_test.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let six = plus_one(five);
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/enumeration_test.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let none = plus_one(None);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stderr]  --> src/vector_test.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 |         let v2 = vec![1, 2, 3];
[INFO] [stderr]   |             ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/vector_test.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 _ => {}
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let f = match f {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let f = match f {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let f = File::open("hello.txt").unwrap();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/err_handle_test.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item1`
[INFO] [stderr]   --> src/trait_test.rs:71:28
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lifetime_test.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let i = ImportantExcerpt { part: first_sentence };
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_string` is never used
[INFO] [stderr]  --> src/string_test.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |     fn create_string() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `username`, `sign_in_count`, and `active` are never read
[INFO] [stderr]  --> src/struct_test.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     struct User {
[INFO] [stderr]   |            ---- fields in this struct
[INFO] [stderr] 4 |         username: String,
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr] 5 |         email: String,
[INFO] [stderr] 6 |         sign_in_count: u64,
[INFO] [stderr]   |         ^^^^^^^^^^^^^
[INFO] [stderr] 7 |         active: bool,
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/enumeration_test.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_enum` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn create_enum() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `enum_method` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn enum_method() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `option_test` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn option_test() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |     enum Coin {
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stderr]   --> src/enumeration_test.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     enum UsState {
[INFO] [stderr]    |          ------- variants in this enum
[INFO] [stderr] 59 |         Alabama,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr] 60 |         Alaska,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `value_in_cents` is never used
[INFO] [stderr]   --> src/enumeration_test.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `one_match` is never used
[INFO] [stderr]    --> src/enumeration_test.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn one_match() {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `if_let` is never used
[INFO] [stderr]    --> src/enumeration_test.rs:113:8
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn if_let() {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_vector` is never used
[INFO] [stderr]  --> src/vector_test.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 |     fn create_vector() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_vector` is never used
[INFO] [stderr]   --> src/vector_test.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn read_vector() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `insert_hashmap` is never used
[INFO] [stderr]   --> src/hashmap_test.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn insert_hashmap() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `unwrap_test` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn unwrap_test() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `expect_test` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn expect_test() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_result` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn return_result() -> Result<String, io::Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_result_2` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn return_result_2() -> Result<String, io::Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_result_3` is never used
[INFO] [stderr]   --> src/err_handle_test.rs:68:8
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn return_result_3() -> Result<String, io::Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `y` is never read
[INFO] [stderr]  --> src/generics_test.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Point<T> {
[INFO] [stderr]   |        ----- field in this struct
[INFO] [stderr] 2 |     x: T,
[INFO] [stderr] 3 |     y: T,
[INFO] [stderr]   |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `largest_i32` is never used
[INFO] [stderr]   --> src/generics_test.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn largest_i32(list: &[i32]) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `largest` is never used
[INFO] [stderr]   --> src/generics_test.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `part` is never read
[INFO] [stderr]   --> src/lifetime_test.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ---------------- field in this struct
[INFO] [stderr] 14 |     part: &'a str,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rdemo` (lib test) generated 84 warnings (29 duplicates) (run `cargo fix --lib -p rdemo --tests` to apply 31 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rdemo-34832d06c567d2e3)
[INFO] [stdout] 
[INFO] [stdout] running 56 tests
[INFO] [stdout] test data_test::tests::array ... ok
[INFO] [stdout] test bytes_test::tests::print_char111 ... ok
[INFO] [stdout] test bytes_test::tests::hex_test ... ok
[INFO] [stdout] test data_test::tests::for_test ... ok
[INFO] [stdout] test data_test::tests::loop_test ... ok
[INFO] [stdout] test data_test::tests::mut_var ... ok
[INFO] [stdout] test data_test::tests::shadow_var ... ok
[INFO] [stdout] test data_test::tests::transform_var ... ok
[INFO] [stdout] test data_test::tests::tuple ... ok
[INFO] [stdout] test data_test::tests::while_test ... ok
[INFO] [stdout] test enumeration_test::tests::default_match ... ok
[INFO] [stdout] test enumeration_test::tests::plus_one_test ... ok
[INFO] [stdout] test generics_test::tests::test_mixup ... ok
[INFO] [stdout] test hashmap_test::tests::insert_when_absent ... ok
[INFO] [stdout] test hashmap_test::tests::read_hashmap ... ok
[INFO] [stdout] test generics_test::tests::test_point ... ok
[INFO] [stdout] test hashmap_test::tests::create_hashmap ... ok
[INFO] [stdout] test hashmap_test::tests::update_when_exist ... ok
[INFO] [stdout] test owner_scope_test::tests::borrow_and_return_test ... ok
[INFO] [stdout] test owner_scope_test::tests::clone_test ... ok
[INFO] [stdout] test lifetime_test::tests::lifetime_test ... ok
[INFO] [stdout] test owner_scope_test::tests::copy_test ... ok
[INFO] [stdout] test hashmap_test::tests::traverse_hashmap ... ok
[INFO] [stdout] test owner_scope_test::tests::move_test ... ok
[INFO] [stdout] test owner_scope_test::tests::mut_reference_test ... ok
[INFO] [stdout] test owner_scope_test::tests::first_world_better_test ... ok
[INFO] [stdout] test owner_scope_test::tests::first_world_test ... ok
[INFO] [stdout] test lifetime_test::tests::lifetime_test1 ... ok
[INFO] [stdout] test owner_scope_test::tests::my_test ... ok
[INFO] [stdout] test owner_scope_test::tests::string_slice ... ok
[INFO] [stdout] test owner_scope_test::tests::take_owner_ship_test ... ok
[INFO] [stdout] test slice_test::tests::array_and_slice ... ok
[INFO] [stdout] test slice_test::tests::first_word_test ... ok
[INFO] [stdout] test owner_scope_test::tests::unmut_reference_test ... ok
[INFO] [stdout] test slice_test::tests::string_slice ... ok
[INFO] [stdout] test slice_test::tests::traverse_slice ... ok
[INFO] [stdout] test string_test::tests::for1 ... ok
[INFO] [stdout] test slice_test::tests::first_word_test_v2 ... ok
[INFO] [stdout] test string_test::tests::for2 ... ok
[INFO] [stdout] test string_test::tests::join_string1 ... ok
[INFO] [stdout] test string_test::tests::join_string2 ... ok
[INFO] [stdout] test string_test::tests::for3 ... ok
[INFO] [stdout] test struct_test::tests::associated_function_test ... ok
[INFO] [stdout] test struct_test::tests::create_struct_from_other_struct ... ok
[INFO] [stdout] test string_test::tests::for4 ... ok
[INFO] [stdout] test struct_test::tests::create_struct ... ok
[INFO] [stdout] test struct_test::tests::train_test4 ... ok
[INFO] [stdout] test struct_test::tests::create_tuple_struct ... ok
[INFO] [stdout] test struct_test::tests::trait_test2 ... ok
[INFO] [stdout] test struct_test::tests::trait_test3 ... ok
[INFO] [stdout] test vector_test::tests::traverse_vector ... ok
[INFO] [stdout] test struct_test::tests::trait_test ... ok
[INFO] [stdout] test trait_test::tests::summary_test ... ok
[INFO] [stdout] test vector_test::tests::store_different_type_in_vector ... ok
[INFO] [stdout] test err_handle_test::tests::multi_err_test ... FAILED
[INFO] [stdout] test err_handle_test::tests::result_test ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- err_handle_test::tests::multi_err_test stdout ----
[INFO] [stdout] thread 'err_handle_test::tests::multi_err_test' panicked at src/err_handle_test.rs:28:31:
[INFO] [stdout] Problem creating the file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x562898013826 - std::backtrace_rs::backtrace::libunwind::trace::h261606ad26a499c1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x562898013826 - std::backtrace_rs::backtrace::trace_unsynchronized::hd183f0625477fb28
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x562898013826 - std::sys_common::backtrace::_print_fmt::hd7f8fef21b4eda67
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x562898013826 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h623d9b51f2f453f1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x56289803c9a0 - core::fmt::rt::Argument::fmt::h9f417ac76a86f368
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x56289803c9a0 - core::fmt::write::hc9b6faf4ac2aeff7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x56289801128f - std::io::Write::write_fmt::he04625a3a989fec3
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x562898013604 - std::sys_common::backtrace::_print::hd5d66399c7df88a2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x562898013604 - std::sys_common::backtrace::print::he81ed2da642d37e5
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x562898015377 - std::panicking::default_hook::{{closure}}::h85773f4fa117163d
[INFO] [stdout]   10:     0x56289801505d - std::panicking::default_hook::h6a1694a91d09b278
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x562897fe5237 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h616ac37fa3cd6c8f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x562897fe5237 - test::test_main::{{closure}}::h00d84697cefdcbb6
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x562898015996 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcb3fe3b9bb537ba8
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x562898015996 - std::panicking::rust_panic_with_hook::h0a7ad96e90f7145b
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x5628980156e2 - std::panicking::begin_panic_handler::{{closure}}::h7919090525c6485e
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x562898013d26 - std::sys_common::backtrace::__rust_end_short_backtrace::hf3289479464f7dfe
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x562898015440 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x562897f8ecd5 - core::panicking::panic_fmt::hcc9f77c5c132af55
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x562897fac13f - rdemo::err_handle_test::tests::multi_err_test::h936c3143eaa507e7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:28:31
[INFO] [stdout]   20:     0x562897fabf27 - rdemo::err_handle_test::tests::multi_err_test::{{closure}}::hf57be92159c2c552
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:21:24
[INFO] [stdout]   21:     0x562897fae036 - core::ops::function::FnOnce::call_once::habc659eb4a9e792c
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x562897feab0f - core::ops::function::FnOnce::call_once::hd64d26f405258157
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x562897feab0f - test::__rust_begin_short_backtrace::he21b0b7a6d731bf9
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:627:18
[INFO] [stdout]   24:     0x562897fe9891 - test::run_test_in_process::{{closure}}::hf5c73986d7bdfde2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:60
[INFO] [stdout]   25:     0x562897fe9891 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330011ad032aadc0
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x562897fe9891 - std::panicking::try::do_call::he61b0a958b795a41
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   27:     0x562897fe9891 - std::panicking::try::h7309da130f906eb7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   28:     0x562897fe9891 - std::panic::catch_unwind::hc5c3a06fdaf0a92a
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   29:     0x562897fe9891 - test::run_test_in_process::h7e7b7c71c3324e0f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:27
[INFO] [stdout]   30:     0x562897fe9891 - test::run_test::{{closure}}::h1f509f28f5cf20b1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:573:43
[INFO] [stdout]   31:     0x562897fb0bc6 - test::run_test::{{closure}}::h1754218abf443f6d
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:601:41
[INFO] [stdout]   32:     0x562897fb0bc6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2ee174b9d5954948
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   33:     0x562897fb5c27 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf60bee9c1a17ef09
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   34:     0x562897fb5c27 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h33d0dddec5216160
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x562897fb5c27 - std::panicking::try::do_call::h144b3048b546f835
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   36:     0x562897fb5c27 - std::panicking::try::h978244d04646189f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   37:     0x562897fb5c27 - std::panic::catch_unwind::hdf436369d188fe86
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   38:     0x562897fb5c27 - std::thread::Builder::spawn_unchecked_::{{closure}}::h87329cbdd33c79ec
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   39:     0x562897fb5c27 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h401abbe67897d450
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x56289801a445 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5d7c8f150ab9c84c
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   41:     0x56289801a445 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h570d5b005c242c15
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   42:     0x56289801a445 - std::sys::unix::thread::Thread::new::thread_start::h36b0a20c0b2361ad
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7f85617bfac3 - <unknown>
[INFO] [stdout]   44:     0x7f8561850bf4 - __clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- err_handle_test::tests::result_test stdout ----
[INFO] [stdout] thread 'err_handle_test::tests::result_test' panicked at src/err_handle_test.rs:15:17:
[INFO] [stdout] Problem opening the file: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x562898013826 - std::backtrace_rs::backtrace::libunwind::trace::h261606ad26a499c1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x562898013826 - std::backtrace_rs::backtrace::trace_unsynchronized::hd183f0625477fb28
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x562898013826 - std::sys_common::backtrace::_print_fmt::hd7f8fef21b4eda67
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x562898013826 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h623d9b51f2f453f1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x56289803c9a0 - core::fmt::rt::Argument::fmt::h9f417ac76a86f368
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x56289803c9a0 - core::fmt::write::hc9b6faf4ac2aeff7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x56289801128f - std::io::Write::write_fmt::he04625a3a989fec3
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x562898013604 - std::sys_common::backtrace::_print::hd5d66399c7df88a2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x562898013604 - std::sys_common::backtrace::print::he81ed2da642d37e5
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x562898015377 - std::panicking::default_hook::{{closure}}::h85773f4fa117163d
[INFO] [stdout]   10:     0x56289801505d - std::panicking::default_hook::h6a1694a91d09b278
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x562897fe5237 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h616ac37fa3cd6c8f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x562897fe5237 - test::test_main::{{closure}}::h00d84697cefdcbb6
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x562898015996 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcb3fe3b9bb537ba8
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x562898015996 - std::panicking::rust_panic_with_hook::h0a7ad96e90f7145b
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x5628980156e2 - std::panicking::begin_panic_handler::{{closure}}::h7919090525c6485e
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x562898013d26 - std::sys_common::backtrace::__rust_end_short_backtrace::hf3289479464f7dfe
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x562898015440 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x562897f8ecd5 - core::panicking::panic_fmt::hcc9f77c5c132af55
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x562897fabeee - rdemo::err_handle_test::tests::result_test::hb2c808c5c3aaf05f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:15:17
[INFO] [stdout]   20:     0x562897fabdd7 - rdemo::err_handle_test::tests::result_test::{{closure}}::hc7d5f155f7bc60de
[INFO] [stdout]                                at /opt/rustwide/workdir/src/err_handle_test.rs:10:21
[INFO] [stdout]   21:     0x562897fadea6 - core::ops::function::FnOnce::call_once::h976238ef3cee3644
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x562897feab0f - core::ops::function::FnOnce::call_once::hd64d26f405258157
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x562897feab0f - test::__rust_begin_short_backtrace::he21b0b7a6d731bf9
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:627:18
[INFO] [stdout]   24:     0x562897fe9891 - test::run_test_in_process::{{closure}}::hf5c73986d7bdfde2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:60
[INFO] [stdout]   25:     0x562897fe9891 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330011ad032aadc0
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x562897fe9891 - std::panicking::try::do_call::he61b0a958b795a41
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   27:     0x562897fe9891 - std::panicking::try::h7309da130f906eb7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   28:     0x562897fe9891 - std::panic::catch_unwind::hc5c3a06fdaf0a92a
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   29:     0x562897fe9891 - test::run_test_in_process::h7e7b7c71c3324e0f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:27
[INFO] [stdout]   30:     0x562897fe9891 - test::run_test::{{closure}}::h1f509f28f5cf20b1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:573:43
[INFO] [stdout]   31:     0x562897fb0bc6 - test::run_test::{{closure}}::h1754218abf443f6d
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:601:41
[INFO] [stdout]   32:     0x562897fb0bc6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2ee174b9d5954948
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   33:     0x562897fb5c27 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf60bee9c1a17ef09
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   34:     0x562897fb5c27 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h33d0dddec5216160
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x562897fb5c27 - std::panicking::try::do_call::h144b3048b546f835
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   36:     0x562897fb5c27 - std::panicking::try::h978244d04646189f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   37:     0x562897fb5c27 - std::panic::catch_unwind::hdf436369d188fe86
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   38:     0x562897fb5c27 - std::thread::Builder::spawn_unchecked_::{{closure}}::h87329cbdd33c79ec
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   39:     0x562897fb5c27 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h401abbe67897d450
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x56289801a445 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5d7c8f150ab9c84c
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   41:     0x56289801a445 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h570d5b005c242c15
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   42:     0x56289801a445 - std::sys::unix::thread::Thread::new::thread_start::h36b0a20c0b2361ad
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   43:     0x7f85617bfac3 - <unknown>
[INFO] [stdout]   44:     0x7f8561850bf4 - __clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     err_handle_test::tests::multi_err_test
[INFO] [stdout]     err_handle_test::tests::result_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 54 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "156a68bbec36df3606465fef055b5faea15e8023490ca76b6a4b5c86bca98f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "156a68bbec36df3606465fef055b5faea15e8023490ca76b6a4b5c86bca98f33", kill_on_drop: false }`
[INFO] [stdout] 156a68bbec36df3606465fef055b5faea15e8023490ca76b6a4b5c86bca98f33
