[INFO] cloning repository https://github.com/jwfy/rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jwfy/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjwfy%2Frust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjwfy%2Frust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fea3642a5516386a605fc34601a8a06e59deba7b
[INFO] testing jwfy/rust-learn against 1.83.0 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjwfy%2Frust-learn" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jwfy/rust-learn on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jwfy/rust-learn
[INFO] finished tweaking git repo https://github.com/jwfy/rust-learn
[INFO] tweaked toml for git repo https://github.com/jwfy/rust-learn written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jwfy/rust-learn 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" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c790db0bbccaf92e7aac7c7d2854dbb89225434d46acf0c847aa562066a054a
[INFO] running `Command { std: "docker" "start" "-a" "4c790db0bbccaf92e7aac7c7d2854dbb89225434d46acf0c847aa562066a054a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c790db0bbccaf92e7aac7c7d2854dbb89225434d46acf0c847aa562066a054a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c790db0bbccaf92e7aac7c7d2854dbb89225434d46acf0c847aa562066a054a", kill_on_drop: false }`
[INFO] [stdout] 4c790db0bbccaf92e7aac7c7d2854dbb89225434d46acf0c847aa562066a054a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f29b954fc59761637c399dec0a8afd8482828c685efbd85e168af0ca7e624179
[INFO] running `Command { std: "docker" "start" "-a" "f29b954fc59761637c399dec0a8afd8482828c685efbd85e168af0ca7e624179", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Formatter` and `Pointer`
[INFO] [stdout]   --> src/basic/owner_ship.rs:45:20
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use std::fmt::{Formatter, Pointer};
[INFO] [stdout]    |                    ^^^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/basic/owner_ship.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | mod copy_test {
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/basic/type_system.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     use std::rc::Rc;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/basic/type_system.rs:97:1
[INFO] [stdout]    |
[INFO] [stdout] 97 | mod box_test {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/basic/threads.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::io::Read;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]  --> src/basic/threads.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::thread::spawn;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/basic/type_system.rs:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dynaimic_dispatch(point_trait: &PointTrait) -> i32 {
[INFO] [stdout]    |                                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dynaimic_dispatch(point_trait: &dyn PointTrait) -> i32 {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]   --> src/basic/owner_ship.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let b2 = a2;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/basic/owner_ship.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let p2 = p1;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/basic/type_system.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let p2 = p1;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/basic/type_system.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let p1 = Point { x: 11, y: 22 };
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/basic/type_system.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |             let p2 = Point { x: 44, y: 33 };
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/basic/type_system.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut p1 = Point { x: 11, y: 22 };
[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: `p1`
[INFO] [stdout]   --> src/basic/type_system.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let p1 = Point { x: 1, y: 2 };
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/basic/type_system.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let p1 = Point { x: 3, y: 4 };
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/basic/type_system.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut second = Box::new(Node {
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]  --> src/threadpool/threadpool.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Worker {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     id : usize,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     thread: JoinHandle<()>
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]   --> src/threadpool/threadpool.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct ThreadPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 29 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_1` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn test_1() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_2` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn test_2() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_3` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn test_3() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | pub fn test_trait() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_drop` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn test_drop() {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_box` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn test_box() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 | pub fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/basic/type_system.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub struct Point {
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PointTrait` is never used
[INFO] [stdout]  --> src/basic/type_system.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     trait PointTrait {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dynaimic_dispatch` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dynaimic_dispatch(point_trait: &PointTrait) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn static_dispatch<T>(t: &T) -> i32
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch_1` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn static_dispatch_1<T: PointTrait>(t: T) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_1` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn test_1() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/basic/type_system.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub struct Point {
[INFO] [stdout]    |                ----- fields in this struct
[INFO] [stdout] 46 |         x: i32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 47 |         y: i32,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` 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 `test_1` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn test_1() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_2` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn test_2() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_3` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn test_3() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_4` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn test_4() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_box` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn test_box() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `point` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub fn point() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/basic/type_system.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         pub struct Point {
[INFO] [stdout]     |                    ----- fields in this struct
[INFO] [stdout] 148 |             x: i32,
[INFO] [stdout]     |             ^
[INFO] [stdout] 149 |             y: i32,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]  --> src/basic/iter.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Counter {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/basic/iter.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Counter {
[INFO] [stdout]   | ------------ associated function in this implementation
[INFO] [stdout] 7 |     fn new() -> Counter {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `piter` is never used
[INFO] [stdout]   --> src/basic/iter.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn piter<U, T>(t : T)
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/basic/threads.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]  --> src/basic/threads.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn test1() {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_deref` is never used
[INFO] [stdout]  --> src/basic/trait0.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn test_deref() {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 9  |         impl<T> Point<T> {
[INFO] [stdout]    |         ---------------- associated function in this implementation
[INFO] [stdout] 10 |             pub fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_deref2` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn test_deref2() {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 37 |         impl<T> P2<T> {
[INFO] [stdout]    |         ------------- associated function in this implementation
[INFO] [stdout] 38 |             pub fn new(t: T) -> Self {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_default` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn test_default() {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/basic/trait0.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         struct Point {
[INFO] [stdout]    |                ----- fields in this struct
[INFO] [stdout] 59 |             x: i32,
[INFO] [stdout]    |             ^
[INFO] [stdout] 60 |             y: i32,
[INFO] [stdout]    |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `format` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub trait Formatter {
[INFO] [stdout]    |               --------- method in this trait
[INFO] [stdout] 83 |         fn format(&self, input: &String) -> bool;
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format` is never used
[INFO] [stdout]    --> src/basic/trait0.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn format(input: &String, formatter: Box<dyn Formatter>) -> bool {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `More` is never constructed
[INFO] [stdout]   --> src/list/first.rs:39:3
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum Link {
[INFO] [stdout]    |      ---- variant in this enum
[INFO] [stdout] 38 |   Empty,
[INFO] [stdout] 39 |   More(Box<Node>),
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `elem` is never read
[INFO] [stdout]   --> src/list/first.rs:43:3
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Node {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 43 |   elem: i32,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/list/first.rs:48:10
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl List {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 48 |   pub fn new() -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |   pub fn push(&mut self, elem:i32) {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |   pub fn pop(&mut self) -> Option<i32> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, `peek`, `peek_mut`, and `into_iter` are never used
[INFO] [stdout]   --> src/list/second.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl <T> List <T>{
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 29 |     // 这需要从impl List 变成当前的模样，都需要添加<T>
[INFO] [stdout] 30 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn push(&mut self, elem: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     pub fn into_iter(self) -> IntoIter<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `load`, and `store` are never used
[INFO] [stdout]   --> src/live_coding/file_io.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl User {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(name: String, age: i32, genger: Genger) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn load(file_name: &str) -> Result<Self, std::io::Error> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn store(&self, file_name: &str) -> Result<usize, std::io::Error> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strtok` is never used
[INFO] [stdout]  --> src/live_coding/strtok.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn strtok<'a>(s: &'a mut &str, p: char) -> &'a str {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/live_coding/fibonacci.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Fibonacci {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(total: u8) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `encode` is never used
[INFO] [stdout]  --> src/live_coding/encoder.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Encoder {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 2 |     type Target;
[INFO] [stdout] 3 |     fn encode(&self) -> Option<Vec<Self::Target>>;
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Event` is never constructed
[INFO] [stdout]  --> src/live_coding/encoder.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Event<Id, Data> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `encode` are never used
[INFO] [stdout]   --> src/live_coding/encoder.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | / impl<Id, Data> Event<Id, Data>
[INFO] [stdout] 12 | | where
[INFO] [stdout] 13 | |     Id: Encoder<Target = u8>,
[INFO] [stdout] 14 | |     Data: Encoder<Target = u8>,
[INFO] [stdout]    | |_______________________________- associated items in this implementation
[INFO] [stdout] 15 |   {
[INFO] [stdout] 16 |       pub fn new(id: Id, data: Data) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |       pub fn encode(&self) -> Option<Vec<u8>> {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]   --> src/basic/type_system.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             p1;
[INFO] [stdout]    |             ^^^ help: use `drop` to clarify the intent: `drop(p1);`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/basic/type_system.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             &pp;
[INFO] [stdout]     |             ^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |             let _ = &pp;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Foo` should have an upper case name
[INFO] [stdout]  --> src/basic/threads.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 |             static Foo : RefCell<u32> = RefCell::new(1)
[INFO] [stdout]   |                    ^^^ help: convert the identifier to upper case (notice the capitalization): `FOO`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `dynTrait` should have a snake case name
[INFO] [stdout]   --> src/basic/trait0.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 | mod dynTrait {
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `dyn_trait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.49s
[INFO] running `Command { std: "docker" "inspect" "f29b954fc59761637c399dec0a8afd8482828c685efbd85e168af0ca7e624179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f29b954fc59761637c399dec0a8afd8482828c685efbd85e168af0ca7e624179", kill_on_drop: false }`
[INFO] [stdout] f29b954fc59761637c399dec0a8afd8482828c685efbd85e168af0ca7e624179
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fad137aae3dbbcbe3209f81b0127e77df508c13b4ba19dd6317b6b43103e090
[INFO] running `Command { std: "docker" "start" "-a" "0fad137aae3dbbcbe3209f81b0127e77df508c13b4ba19dd6317b6b43103e090", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Formatter` and `Pointer`
[INFO] [stdout]   --> src/basic/owner_ship.rs:45:20
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use std::fmt::{Formatter, Pointer};
[INFO] [stdout]    |                    ^^^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/basic/type_system.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     use std::rc::Rc;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/basic/threads.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::io::Read;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]  --> src/basic/threads.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::thread::spawn;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/basic/type_system.rs:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dynaimic_dispatch(point_trait: &PointTrait) -> i32 {
[INFO] [stdout]    |                                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dynaimic_dispatch(point_trait: &dyn PointTrait) -> i32 {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/basic/trait0.rs:128:26
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let write1: &mut Write = &mut buf;
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let write1: &mut dyn Write = &mut buf;
[INFO] [stdout]     |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]   --> src/basic/owner_ship.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let b2 = a2;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/basic/owner_ship.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let p2 = p1;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/basic/type_system.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let p2 = p1;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/basic/type_system.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let p1 = Point { x: 11, y: 22 };
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/basic/type_system.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |             let p2 = Point { x: 44, y: 33 };
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/basic/type_system.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut p1 = Point { x: 11, y: 22 };
[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: `p1`
[INFO] [stdout]   --> src/basic/type_system.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let p1 = Point { x: 1, y: 2 };
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/basic/type_system.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let p1 = Point { x: 3, y: 4 };
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/basic/type_system.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut second = Box::new(Node {
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ss1` is never read
[INFO] [stdout]    --> src/basic/type_system.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut ss1 = ss;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/basic/iter.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let iter = v1.iter();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/basic/iter.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let iter = &v1.iter();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/basic/threads.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let s1 = "hello world";
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `write1`
[INFO] [stdout]    --> src/basic/trait0.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let write1: &mut Write = &mut buf;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_write1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]  --> src/threadpool/threadpool.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Worker {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 6 |     id : usize,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     thread: JoinHandle<()>
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]   --> src/threadpool/threadpool.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct ThreadPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 29 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_1` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn test_1() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_2` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn test_2() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_3` is never used
[INFO] [stdout]   --> src/basic/owner_ship.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn test_3() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | pub fn test_trait() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_drop` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn test_drop() {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_box` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn test_box() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 | pub fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/basic/type_system.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub struct Point {
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PointTrait` is never used
[INFO] [stdout]  --> src/basic/type_system.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     trait PointTrait {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dynaimic_dispatch` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dynaimic_dispatch(point_trait: &PointTrait) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn static_dispatch<T>(t: &T) -> i32
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_dispatch_1` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn static_dispatch_1<T: PointTrait>(t: T) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_1` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn test_1() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/basic/type_system.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub struct Point {
[INFO] [stdout]    |                ----- fields in this struct
[INFO] [stdout] 46 |         x: i32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 47 |         y: i32,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` 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 `test_1` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn test_1() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_2` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn test_2() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_3` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn test_3() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_4` is never used
[INFO] [stdout]   --> src/basic/type_system.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn test_4() {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_box` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn test_box() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `point` is never used
[INFO] [stdout]    --> src/basic/type_system.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub fn point() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/basic/type_system.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         pub struct Point {
[INFO] [stdout]     |                    ----- fields in this struct
[INFO] [stdout] 148 |             x: i32,
[INFO] [stdout]     |             ^
[INFO] [stdout] 149 |             y: i32,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Point` 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 `test` is never used
[INFO] [stdout]   --> src/basic/threads.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]  --> src/basic/threads.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn test1() {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_deref` is never used
[INFO] [stdout]  --> src/basic/trait0.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn test_deref() {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 9  |         impl<T> Point<T> {
[INFO] [stdout]    |         ---------------- associated function in this implementation
[INFO] [stdout] 10 |             pub fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_deref2` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn test_deref2() {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 37 |         impl<T> P2<T> {
[INFO] [stdout]    |         ------------- associated function in this implementation
[INFO] [stdout] 38 |             pub fn new(t: T) -> Self {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_default` is never used
[INFO] [stdout]   --> src/basic/trait0.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn test_default() {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/basic/trait0.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         struct Point {
[INFO] [stdout]    |                ----- fields in this struct
[INFO] [stdout] 59 |             x: i32,
[INFO] [stdout]    |             ^
[INFO] [stdout] 60 |             y: i32,
[INFO] [stdout]    |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_iter` is never used
[INFO] [stdout]   --> src/list/second.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl <T> List <T>{
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 88 |     pub fn into_iter(self) -> IntoIter<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/live_coding/file_io.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl User {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 22 |     pub fn new(name: String, age: i32, genger: Genger) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]   --> src/basic/type_system.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             p1;
[INFO] [stdout]    |             ^^^ help: use `drop` to clarify the intent: `drop(p1);`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/basic/type_system.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             &pp;
[INFO] [stdout]     |             ^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |             let _ = &pp;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Foo` should have an upper case name
[INFO] [stdout]  --> src/basic/threads.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 |             static Foo : RefCell<u32> = RefCell::new(1)
[INFO] [stdout]   |                    ^^^ help: convert the identifier to upper case (notice the capitalization): `FOO`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `dynTrait` should have a snake case name
[INFO] [stdout]   --> src/basic/trait0.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 | mod dynTrait {
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `dyn_trait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::slice::Iter` that must be used
[INFO] [stdout]    --> src/list/second.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         q.iter();
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let _ = q.iter();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "0fad137aae3dbbcbe3209f81b0127e77df508c13b4ba19dd6317b6b43103e090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fad137aae3dbbcbe3209f81b0127e77df508c13b4ba19dd6317b6b43103e090", kill_on_drop: false }`
[INFO] [stdout] 0fad137aae3dbbcbe3209f81b0127e77df508c13b4ba19dd6317b6b43103e090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 835987c1418a04b0c82605831e140c12fd3ad1cca5d4c97da74fd413b522f6f2
[INFO] running `Command { std: "docker" "start" "-a" "835987c1418a04b0c82605831e140c12fd3ad1cca5d4c97da74fd413b522f6f2", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Formatter` and `Pointer`
[INFO] [stderr]   --> src/basic/owner_ship.rs:45:20
[INFO] [stderr]    |
[INFO] [stderr] 45 |     use std::fmt::{Formatter, Pointer};
[INFO] [stderr]    |                    ^^^^^^^^^  ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/basic/type_system.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |     use std::rc::Rc;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/basic/threads.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     use std::io::Read;
[INFO] [stderr]   |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::spawn`
[INFO] [stderr]  --> src/basic/threads.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     use std::thread::spawn;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/basic/type_system.rs:18:40
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn dynaimic_dispatch(point_trait: &PointTrait) -> i32 {
[INFO] [stderr]    |                                        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn dynaimic_dispatch(point_trait: &dyn PointTrait) -> i32 {
[INFO] [stderr]    |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/basic/trait0.rs:128:26
[INFO] [stderr]     |
[INFO] [stderr] 128 |         let write1: &mut Write = &mut buf;
[INFO] [stderr]     |                          ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 128 |         let write1: &mut dyn Write = &mut buf;
[INFO] [stderr]     |                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b2`
[INFO] [stderr]   --> src/basic/owner_ship.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let b2 = a2;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p2`
[INFO] [stderr]   --> src/basic/owner_ship.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let p2 = p1;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p2`
[INFO] [stderr]   --> src/basic/type_system.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let p2 = p1;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p1`
[INFO] [stderr]   --> src/basic/type_system.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let p1 = Point { x: 11, y: 22 };
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p2`
[INFO] [stderr]   --> src/basic/type_system.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let p2 = Point { x: 44, y: 33 };
[INFO] [stderr]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/basic/type_system.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let mut p1 = Point { x: 11, y: 22 };
[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: `p1`
[INFO] [stderr]   --> src/basic/type_system.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let p1 = Point { x: 1, y: 2 };
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p1`
[INFO] [stderr]   --> src/basic/type_system.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let p1 = Point { x: 3, y: 4 };
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/basic/type_system.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut second = Box::new(Node {
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ss1` is never read
[INFO] [stderr]    --> src/basic/type_system.rs:208:17
[INFO] [stderr]     |
[INFO] [stderr] 208 |         let mut ss1 = ss;
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/basic/iter.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let iter = v1.iter();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/basic/iter.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let iter = &v1.iter();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]   --> src/basic/threads.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let s1 = "hello world";
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `write1`
[INFO] [stderr]    --> src/basic/trait0.rs:128:13
[INFO] [stderr]     |
[INFO] [stderr] 128 |         let write1: &mut Write = &mut buf;
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_write1`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `thread` are never read
[INFO] [stderr]  --> src/threadpool/threadpool.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Worker {
[INFO] [stderr]   |        ------ fields in this struct
[INFO] [stderr] 6 |     id : usize,
[INFO] [stderr]   |     ^^
[INFO] [stderr] 7 |     thread: JoinHandle<()>
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `workers` is never read
[INFO] [stderr]   --> src/threadpool/threadpool.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct ThreadPool {
[INFO] [stderr]    |            ---------- field in this struct
[INFO] [stderr] 29 |     workers: Vec<Worker>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]   --> src/basic/owner_ship.rs:98:8
[INFO] [stderr]    |
[INFO] [stderr] 98 | pub fn test() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_1` is never used
[INFO] [stderr]   --> src/basic/owner_ship.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn test_1() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_2` is never used
[INFO] [stderr]   --> src/basic/owner_ship.rs:64:12
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn test_2() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_3` is never used
[INFO] [stderr]   --> src/basic/owner_ship.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn test_3() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_trait` is never used
[INFO] [stderr]    --> src/basic/type_system.rs:174:8
[INFO] [stderr]     |
[INFO] [stderr] 174 | pub fn test_trait() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_drop` is never used
[INFO] [stderr]    --> src/basic/type_system.rs:178:8
[INFO] [stderr]     |
[INFO] [stderr] 178 | pub fn test_drop() {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_box` is never used
[INFO] [stderr]    --> src/basic/type_system.rs:185:8
[INFO] [stderr]     |
[INFO] [stderr] 185 | pub fn test_box() {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]    --> src/basic/type_system.rs:189:8
[INFO] [stderr]     |
[INFO] [stderr] 189 | pub fn test() {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point` is never constructed
[INFO] [stderr]  --> src/basic/type_system.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |     pub struct Point {
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `PointTrait` is never used
[INFO] [stderr]  --> src/basic/type_system.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 |     trait PointTrait {
[INFO] [stderr]   |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `dynaimic_dispatch` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn dynaimic_dispatch(point_trait: &PointTrait) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `static_dispatch` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn static_dispatch<T>(t: &T) -> i32
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `static_dispatch_1` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn static_dispatch_1<T: PointTrait>(t: T) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_1` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn test_1() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `x` and `y` are never read
[INFO] [stderr]   --> src/basic/type_system.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub struct Point {
[INFO] [stderr]    |                ----- fields in this struct
[INFO] [stderr] 46 |         x: i32,
[INFO] [stderr]    |         ^
[INFO] [stderr] 47 |         y: i32,
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_1` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn test_1() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_2` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:64:12
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn test_2() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_3` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:74:12
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn test_3() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_4` is never used
[INFO] [stderr]   --> src/basic/type_system.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn test_4() {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_box` is never used
[INFO] [stderr]    --> src/basic/type_system.rs:100:8
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn test_box() {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `point` is never used
[INFO] [stderr]    --> src/basic/type_system.rs:145:12
[INFO] [stderr]     |
[INFO] [stderr] 145 |     pub fn point() {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `x` and `y` are never read
[INFO] [stderr]    --> src/basic/type_system.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |         pub struct Point {
[INFO] [stderr]     |                    ----- fields in this struct
[INFO] [stderr] 148 |             x: i32,
[INFO] [stderr]     |             ^
[INFO] [stderr] 149 |             y: i32,
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]   --> src/basic/threads.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn test() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test1` is never used
[INFO] [stderr]  --> src/basic/threads.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn test1() {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]   --> src/basic/trait0.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn test() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_deref` is never used
[INFO] [stderr]  --> src/basic/trait0.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn test_deref() {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/basic/trait0.rs:10:20
[INFO] [stderr]    |
[INFO] [stderr] 9  |         impl<T> Point<T> {
[INFO] [stderr]    |         ---------------- associated function in this implementation
[INFO] [stderr] 10 |             pub fn new(x: T, y: T) -> Self {
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_deref2` is never used
[INFO] [stderr]   --> src/basic/trait0.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn test_deref2() {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/basic/trait0.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 37 |         impl<T> P2<T> {
[INFO] [stderr]    |         ------------- associated function in this implementation
[INFO] [stderr] 38 |             pub fn new(t: T) -> Self {
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_default` is never used
[INFO] [stderr]   --> src/basic/trait0.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn test_default() {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `x` and `y` are never read
[INFO] [stderr]   --> src/basic/trait0.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         struct Point {
[INFO] [stderr]    |                ----- fields in this struct
[INFO] [stderr] 59 |             x: i32,
[INFO] [stderr]    |             ^
[INFO] [stderr] 60 |             y: i32,
[INFO] [stderr]    |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: method `into_iter` is never used
[INFO] [stderr]   --> src/list/second.rs:88:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl <T> List <T>{
[INFO] [stderr]    | ----------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 88 |     pub fn into_iter(self) -> IntoIter<T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/live_coding/file_io.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl User {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] 22 |     pub fn new(name: String, age: i32, genger: Genger) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: path statement drops value
[INFO] [stderr]   --> src/basic/type_system.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             p1;
[INFO] [stderr]    |             ^^^ help: use `drop` to clarify the intent: `drop(p1);`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(path_statements)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/basic/type_system.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |             &pp;
[INFO] [stderr]     |             ^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 160 |             let _ = &pp;
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Foo` should have an upper case name
[INFO] [stderr]  --> src/basic/threads.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 |             static Foo : RefCell<u32> = RefCell::new(1)
[INFO] [stderr]   |                    ^^^ help: convert the identifier to upper case (notice the capitalization): `FOO`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `dynTrait` should have a snake case name
[INFO] [stderr]   --> src/basic/trait0.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 | mod dynTrait {
[INFO] [stderr]    |     ^^^^^^^^ help: convert the identifier to snake case: `dyn_trait`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::slice::Iter` that must be used
[INFO] [stderr]    --> src/list/second.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         q.iter();
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let _ = q.iter();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-learn` (bin "rust-learn" test) generated 60 warnings (run `cargo fix --bin "rust-learn" --tests` to apply 9 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_learn-702fc446caf38b54)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test basic::iter::test::test2 ... ok
[INFO] [stdout] test basic::iter::test::test ... ok
[INFO] [stdout] test basic::iter::test::test0 ... ok
[INFO] [stdout] test basic::owner_ship::test::test0 ... ok
[INFO] [stdout] test basic::owner_ship::test::test2 ... ok
[INFO] [stdout] test basic::owner_ship::test::test1 ... ok
[INFO] [stdout] test basic::threads::test::test2 ... ok
[INFO] [stdout] test basic::trait0::test::test_dyn ... ok
[INFO] [stdout] test basic::type_system::test::test ... ok
[INFO] [stdout] test basic::type_system::test::test1 ... ok
[INFO] [stdout] test list::first::test::basic ... ok
[INFO] [stdout] test list::second::test::test_peek ... ok
[INFO] [stdout] test live_coding::fibonacci::test::test ... ok
[INFO] [stdout] test live_coding::encoder::test::test ... ok
[INFO] [stdout] test basic::trait0::test::test ... ok
[INFO] [stdout] test basic::threads::test::test1 ... ok
[INFO] [stdout] test live_coding::strtok::test::test ... ok
[INFO] [stdout] test live_coding::file_io::test::test ... FAILED
[INFO] [stderr] error: test failed, to rerun pass `--bin rust-learn`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- live_coding::file_io::test::test stdout ----
[INFO] [stdout] thread 'live_coding::file_io::test::test' panicked at src/live_coding/file_io.rs:61:31:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5db8320a241a - std::backtrace_rs::backtrace::libunwind::trace::h5a5b8284f2d0c266
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5db8320a241a - std::backtrace_rs::backtrace::trace_unsynchronized::h76d4f1c9b0b875e3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5db8320a241a - std::sys::backtrace::_print_fmt::hc4546b8364a537c6
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5db8320a241a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5b6bd5631a6d1f6b
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5db8320c7883 - core::fmt::rt::Argument::fmt::h270f6602a2b96f62
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5db8320c7883 - core::fmt::write::h7550c97b06c86515
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/mod.rs:1186:21
[INFO] [stdout]    6:     0x5db83209f5e3 - std::io::Write::write_fmt::h509ff860e5956e5e
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/io/mod.rs:1839:15
[INFO] [stdout]    7:     0x5db8320a2262 - std::sys::backtrace::BacktraceLock::print::h2395ccd2c84ba3aa
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5db8320a387a - std::panicking::default_hook::{{closure}}::he19d4c7230e07961
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5db8320a3684 - std::panicking::default_hook::hf614597d3c67bbdb
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x5db83206cc59 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h39b51ce4599c23d1
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/alloc/src/boxed.rs:2468:9
[INFO] [stdout]   11:     0x5db83206cc59 - test::test_main::{{closure}}::he977ae839a582784
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:133:21
[INFO] [stdout]   12:     0x5db8320a3f18 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9455091b6b06f9fb
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/alloc/src/boxed.rs:2468:9
[INFO] [stdout]   13:     0x5db8320a3f18 - std::panicking::rust_panic_with_hook::h8942133a8b252070
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x5db8320a3cda - std::panicking::begin_panic_handler::{{closure}}::hb5f5963570096b29
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:674:13
[INFO] [stdout]   15:     0x5db8320a28f9 - std::sys::backtrace::__rust_end_short_backtrace::h6208cedc1922feda
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5db8320a396c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x5db832009a60 - core::panicking::panic_fmt::h0c3082644d1bf418
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x5db832009ea6 - core::result::unwrap_failed::hd20b4aa073bda1e2
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/result.rs:1700:5
[INFO] [stdout]   19:     0x5db8320178dd - core::result::Result<T,E>::unwrap::hab5aafec8749ce15
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/result.rs:1104:23
[INFO] [stdout]   20:     0x5db8320178dd - rust_learn::live_coding::file_io::test::test::hf9aac7018f105185
[INFO] [stdout]                                at /opt/rustwide/workdir/src/live_coding/file_io.rs:61:9
[INFO] [stdout]   21:     0x5db8320177c7 - rust_learn::live_coding::file_io::test::test::{{closure}}::h5e5416574fa931e3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/live_coding/file_io.rs:58:14
[INFO] [stdout]   22:     0x5db832012aa6 - core::ops::function::FnOnce::call_once::h11cf122e375f6cdc
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5db83207161b - core::ops::function::FnOnce::call_once::h109cf8051a59b34e
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5db83207161b - test::__rust_begin_short_backtrace::hf4fff89d377446ba
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:621:18
[INFO] [stdout]   25:     0x5db832070e57 - test::run_test_in_process::{{closure}}::h0e39181dd7ee5a43
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:644:60
[INFO] [stdout]   26:     0x5db832070e57 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc5a66a30f0bdfd1f
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5db832070e57 - std::panicking::try::do_call::h873b7cf639554a5e
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   28:     0x5db832070e57 - std::panicking::try::hdb19862fad9c8bd1
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   29:     0x5db832070e57 - std::panic::catch_unwind::h281fe732d236d260
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x5db832070e57 - test::run_test_in_process::h949b6df8457ed338
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:644:27
[INFO] [stdout]   31:     0x5db832070e57 - test::run_test::{{closure}}::h52c556a6d4740e10
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:565:43
[INFO] [stdout]   32:     0x5db832036134 - test::run_test::{{closure}}::h4237f6381c45ccb9
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:595:41
[INFO] [stdout]   33:     0x5db832036134 - std::sys::backtrace::__rust_begin_short_backtrace::h505c97a579eca628
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x5db8320397fe - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h9e86b2e2bc107ea3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/thread/mod.rs:538:17
[INFO] [stdout]   35:     0x5db8320397fe - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8b06ddb275ff4a25
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5db8320397fe - std::panicking::try::do_call::hb26ecd7cd9a9355d
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   37:     0x5db8320397fe - std::panicking::try::h8ddeca9d705f9069
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   38:     0x5db8320397fe - std::panic::catch_unwind::h49e1c33078844c46
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x5db8320397fe - std::thread::Builder::spawn_unchecked_::{{closure}}::h6073db6ff56ad35d
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/thread/mod.rs:537:30
[INFO] [stdout]   40:     0x5db8320397fe - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2c5a5f3779c774f1
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5db8320a7c7b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf75717d9f28faebf
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/alloc/src/boxed.rs:2454:9
[INFO] [stdout]   42:     0x5db8320a7c7b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7bd883a5f3c5f3c1
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/alloc/src/boxed.rs:2454:9
[INFO] [stdout]   43:     0x5db8320a7c7b - std::sys::pal::unix::thread::Thread::new::thread_start::hcc78f3943333fa94
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x734e35848ac3 - <unknown>
[INFO] [stdout]   45:     0x734e358d9a04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     live_coding::file_io::test::test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 17 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "835987c1418a04b0c82605831e140c12fd3ad1cca5d4c97da74fd413b522f6f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835987c1418a04b0c82605831e140c12fd3ad1cca5d4c97da74fd413b522f6f2", kill_on_drop: false }`
[INFO] [stdout] 835987c1418a04b0c82605831e140c12fd3ad1cca5d4c97da74fd413b522f6f2
