[INFO] cloning repository https://github.com/CyberGA/HelloWorld
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CyberGA/HelloWorld" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyberGA%2FHelloWorld", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyberGA%2FHelloWorld'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a2534a460f6115c511bb8ee637822a7d0e68f41
[INFO] testing CyberGA/HelloWorld 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%2FCyberGA%2FHelloWorld" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CyberGA/HelloWorld 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/CyberGA/HelloWorld
[INFO] finished tweaking git repo https://github.com/CyberGA/HelloWorld
[INFO] tweaked toml for git repo https://github.com/CyberGA/HelloWorld written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CyberGA/HelloWorld 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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4283e2b1677dd860b54d3d95d12c9e7b547d06060a91e3f2d5ab6697f5b6b969
[INFO] running `Command { std: "docker" "start" "-a" "4283e2b1677dd860b54d3d95d12c9e7b547d06060a91e3f2d5ab6697f5b6b969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4283e2b1677dd860b54d3d95d12c9e7b547d06060a91e3f2d5ab6697f5b6b969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4283e2b1677dd860b54d3d95d12c9e7b547d06060a91e3f2d5ab6697f5b6b969", kill_on_drop: false }`
[INFO] [stdout] 4283e2b1677dd860b54d3d95d12c9e7b547d06060a91e3f2d5ab6697f5b6b969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ca4d7afdd191582cee9273cb80884b466a74da3906a3078267f7fa62eb6d3f78
[INFO] running `Command { std: "docker" "start" "-a" "ca4d7afdd191582cee9273cb80884b466a74da3906a3078267f7fa62eb6d3f78", kill_on_drop: false }`
[INFO] [stderr]    Compiling HelloWorld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `File`, `HashMap`, `OpenOptions`, `Read`, and `any`
[INFO] [stdout]  --> src/printer.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, any, fs::{File, OpenOptions}, fmt::Display, io::{Write, Read}, i32};
[INFO] [stdout]   |                         ^^^^^^^            ^^^       ^^^^  ^^^^^^^^^^^                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg_state`
[INFO] [stdout]   --> src/printer.rs:95:7
[INFO] [stdout]    |
[INFO] [stdout] 95 |   let msg_state: Message = Message::Move { x: 2, y: 4 };
[INFO] [stdout]    |       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/printer.rs:115:7
[INFO] [stdout]     |
[INFO] [stdout] 115 |   let mut name = "Testing.......";
[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: `student_age`
[INFO] [stdout]    --> src/printer.rs:268:7
[INFO] [stdout]     |
[INFO] [stdout] 268 |   let student_age: Ages = Ages(12, 16, 18);
[INFO] [stdout]     |       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/printer.rs:473:7
[INFO] [stdout]     |
[INFO] [stdout] 473 |   let mut a = [10, 20, 30];
[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/printer.rs:475:7
[INFO] [stdout]     |
[INFO] [stdout] 475 |   let mut iter = a.iter();
[INFO] [stdout]     |       ----^^^^
[INFO] [stdout]     |       |
[INFO] [stdout]     |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LENGTH` is never used
[INFO] [stdout]  --> src/printer.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LENGTH: u32 = 20;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `printer_fn` is never used
[INFO] [stdout]  --> src/printer.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn printer_fn() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `machine_type` is never used
[INFO] [stdout]   --> src/printer.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn machine_type() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `looping` is never used
[INFO] [stdout]   --> src/printer.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn looping() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_while` is never used
[INFO] [stdout]   --> src/printer.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn loop_while() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_for` is never used
[INFO] [stdout]   --> src/printer.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn loop_for() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Days` is never used
[INFO] [stdout]   --> src/printer.rs:71:6
[INFO] [stdout]    |
[INFO] [stdout] 71 | enum Days {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `usin_enum` is never used
[INFO] [stdout]   --> src/printer.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn usin_enum() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_constants` is never used
[INFO] [stdout]   --> src/printer.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn using_constants() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_tuple` is never used
[INFO] [stdout]    --> src/printer.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn using_tuple() { // can store value of different data type
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_str` is never used
[INFO] [stdout]    --> src/printer.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn print_str() {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_array` is never used
[INFO] [stdout]    --> src/printer.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn using_array() { // can only store value of the same data time
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_arr` is never used
[INFO] [stdout]    --> src/printer.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | pub fn print_arr(arr: &mut[i32;4]) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_borrowing` is never used
[INFO] [stdout]    --> src/printer.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |  pub fn using_borrowing() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_slice` is never used
[INFO] [stdout]    --> src/printer.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn using_slice() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_struct` is never used
[INFO] [stdout]    --> src/printer.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn using_struct() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `method_in_struct` is never used
[INFO] [stdout]    --> src/printer.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | pub fn method_in_struct() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]    --> src/printer.rs:279:10
[INFO] [stdout]     |
[INFO] [stdout] 278 |   impl  Rectangle {
[INFO] [stdout]     |   --------------- method in this implementation
[INFO] [stdout] 279 |       fn area(&self) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_struct_method` is never used
[INFO] [stdout]    --> src/printer.rs:287:8
[INFO] [stdout]     |
[INFO] [stdout] 287 | pub fn static_struct_method() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `areaInstance` and `area` are never used
[INFO] [stdout]    --> src/printer.rs:292:10
[INFO] [stdout]     |
[INFO] [stdout] 291 |   impl  Rectangle {
[INFO] [stdout]     |   --------------- associated items in this implementation
[INFO] [stdout] 292 |       fn areaInstance(w: u32, h: u32) -> Rectangle {
[INFO] [stdout]     |          ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 295 |       fn area(&self) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_enum` is never used
[INFO] [stdout]    --> src/printer.rs:303:8
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub fn option_enum() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_vector` is never used
[INFO] [stdout]    --> src/printer.rs:329:8
[INFO] [stdout]     |
[INFO] [stdout] 329 | pub fn using_vector() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_hashmap` is never used
[INFO] [stdout]    --> src/printer.rs:345:8
[INFO] [stdout]     |
[INFO] [stdout] 345 | pub fn using_hashmap() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `working_on_errors` is never used
[INFO] [stdout]    --> src/printer.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 | pub fn working_on_errors() -> Result<bool, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_generics` is never used
[INFO] [stdout]    --> src/printer.rs:385:8
[INFO] [stdout]     |
[INFO] [stdout] 385 | pub fn using_generics() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_traits` is never used
[INFO] [stdout]    --> src/printer.rs:400:8
[INFO] [stdout]     |
[INFO] [stdout] 400 | pub fn using_traits() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_write` is never used
[INFO] [stdout]    --> src/printer.rs:429:8
[INFO] [stdout]     |
[INFO] [stdout] 429 | pub fn read_write() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `working_with_file` is never used
[INFO] [stdout]    --> src/printer.rs:450:8
[INFO] [stdout]     |
[INFO] [stdout] 450 | pub fn working_with_file() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `working_with_iterators` is never used
[INFO] [stdout]    --> src/printer.rs:472:8
[INFO] [stdout]     |
[INFO] [stdout] 472 | pub fn working_with_iterators() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_closure` is never used
[INFO] [stdout]    --> src/printer.rs:491:8
[INFO] [stdout]     |
[INFO] [stdout] 491 | pub fn using_closure() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_smart_pointers` is never used
[INFO] [stdout]    --> src/printer.rs:499:8
[INFO] [stdout]     |
[INFO] [stdout] 499 | pub fn using_smart_pointers() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `areaInstance` should have a snake case name
[INFO] [stdout]    --> src/printer.rs:292:10
[INFO] [stdout]     |
[INFO] [stdout] 292 |       fn areaInstance(w: u32, h: u32) -> Rectangle {
[INFO] [stdout]     |          ^^^^^^^^^^^^ help: convert the identifier to snake case: `area_instance`
[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 0.52s
[INFO] running `Command { std: "docker" "inspect" "ca4d7afdd191582cee9273cb80884b466a74da3906a3078267f7fa62eb6d3f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4d7afdd191582cee9273cb80884b466a74da3906a3078267f7fa62eb6d3f78", kill_on_drop: false }`
[INFO] [stdout] ca4d7afdd191582cee9273cb80884b466a74da3906a3078267f7fa62eb6d3f78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bdd9db8cf61f74540bc04be8a39022458e582452b2bd44f5e77f0f3d03b4ea6f
[INFO] running `Command { std: "docker" "start" "-a" "bdd9db8cf61f74540bc04be8a39022458e582452b2bd44f5e77f0f3d03b4ea6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling HelloWorld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `File`, `HashMap`, `OpenOptions`, `Read`, and `any`
[INFO] [stdout]  --> src/printer.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, any, fs::{File, OpenOptions}, fmt::Display, io::{Write, Read}, i32};
[INFO] [stdout]   |                         ^^^^^^^            ^^^       ^^^^  ^^^^^^^^^^^                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg_state`
[INFO] [stdout]   --> src/printer.rs:95:7
[INFO] [stdout]    |
[INFO] [stdout] 95 |   let msg_state: Message = Message::Move { x: 2, y: 4 };
[INFO] [stdout]    |       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/printer.rs:115:7
[INFO] [stdout]     |
[INFO] [stdout] 115 |   let mut name = "Testing.......";
[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: `student_age`
[INFO] [stdout]    --> src/printer.rs:268:7
[INFO] [stdout]     |
[INFO] [stdout] 268 |   let student_age: Ages = Ages(12, 16, 18);
[INFO] [stdout]     |       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/printer.rs:473:7
[INFO] [stdout]     |
[INFO] [stdout] 473 |   let mut a = [10, 20, 30];
[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/printer.rs:475:7
[INFO] [stdout]     |
[INFO] [stdout] 475 |   let mut iter = a.iter();
[INFO] [stdout]     |       ----^^^^
[INFO] [stdout]     |       |
[INFO] [stdout]     |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LENGTH` is never used
[INFO] [stdout]  --> src/printer.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LENGTH: u32 = 20;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `printer_fn` is never used
[INFO] [stdout]  --> src/printer.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn printer_fn() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `machine_type` is never used
[INFO] [stdout]   --> src/printer.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn machine_type() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `looping` is never used
[INFO] [stdout]   --> src/printer.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn looping() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_while` is never used
[INFO] [stdout]   --> src/printer.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn loop_while() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_for` is never used
[INFO] [stdout]   --> src/printer.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn loop_for() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Days` is never used
[INFO] [stdout]   --> src/printer.rs:71:6
[INFO] [stdout]    |
[INFO] [stdout] 71 | enum Days {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `usin_enum` is never used
[INFO] [stdout]   --> src/printer.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn usin_enum() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_constants` is never used
[INFO] [stdout]   --> src/printer.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn using_constants() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_tuple` is never used
[INFO] [stdout]    --> src/printer.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn using_tuple() { // can store value of different data type
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_str` is never used
[INFO] [stdout]    --> src/printer.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn print_str() {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_array` is never used
[INFO] [stdout]    --> src/printer.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn using_array() { // can only store value of the same data time
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_arr` is never used
[INFO] [stdout]    --> src/printer.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | pub fn print_arr(arr: &mut[i32;4]) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_borrowing` is never used
[INFO] [stdout]    --> src/printer.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |  pub fn using_borrowing() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_slice` is never used
[INFO] [stdout]    --> src/printer.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn using_slice() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_struct` is never used
[INFO] [stdout]    --> src/printer.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn using_struct() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `method_in_struct` is never used
[INFO] [stdout]    --> src/printer.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | pub fn method_in_struct() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]    --> src/printer.rs:279:10
[INFO] [stdout]     |
[INFO] [stdout] 278 |   impl  Rectangle {
[INFO] [stdout]     |   --------------- method in this implementation
[INFO] [stdout] 279 |       fn area(&self) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `static_struct_method` is never used
[INFO] [stdout]    --> src/printer.rs:287:8
[INFO] [stdout]     |
[INFO] [stdout] 287 | pub fn static_struct_method() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `areaInstance` and `area` are never used
[INFO] [stdout]    --> src/printer.rs:292:10
[INFO] [stdout]     |
[INFO] [stdout] 291 |   impl  Rectangle {
[INFO] [stdout]     |   --------------- associated items in this implementation
[INFO] [stdout] 292 |       fn areaInstance(w: u32, h: u32) -> Rectangle {
[INFO] [stdout]     |          ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 295 |       fn area(&self) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_enum` is never used
[INFO] [stdout]    --> src/printer.rs:303:8
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub fn option_enum() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_vector` is never used
[INFO] [stdout]    --> src/printer.rs:329:8
[INFO] [stdout]     |
[INFO] [stdout] 329 | pub fn using_vector() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_hashmap` is never used
[INFO] [stdout]    --> src/printer.rs:345:8
[INFO] [stdout]     |
[INFO] [stdout] 345 | pub fn using_hashmap() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `working_on_errors` is never used
[INFO] [stdout]    --> src/printer.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 | pub fn working_on_errors() -> Result<bool, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_generics` is never used
[INFO] [stdout]    --> src/printer.rs:385:8
[INFO] [stdout]     |
[INFO] [stdout] 385 | pub fn using_generics() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_traits` is never used
[INFO] [stdout]    --> src/printer.rs:400:8
[INFO] [stdout]     |
[INFO] [stdout] 400 | pub fn using_traits() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_write` is never used
[INFO] [stdout]    --> src/printer.rs:429:8
[INFO] [stdout]     |
[INFO] [stdout] 429 | pub fn read_write() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `working_with_file` is never used
[INFO] [stdout]    --> src/printer.rs:450:8
[INFO] [stdout]     |
[INFO] [stdout] 450 | pub fn working_with_file() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `working_with_iterators` is never used
[INFO] [stdout]    --> src/printer.rs:472:8
[INFO] [stdout]     |
[INFO] [stdout] 472 | pub fn working_with_iterators() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_closure` is never used
[INFO] [stdout]    --> src/printer.rs:491:8
[INFO] [stdout]     |
[INFO] [stdout] 491 | pub fn using_closure() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `using_smart_pointers` is never used
[INFO] [stdout]    --> src/printer.rs:499:8
[INFO] [stdout]     |
[INFO] [stdout] 499 | pub fn using_smart_pointers() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `areaInstance` should have a snake case name
[INFO] [stdout]    --> src/printer.rs:292:10
[INFO] [stdout]     |
[INFO] [stdout] 292 |       fn areaInstance(w: u32, h: u32) -> Rectangle {
[INFO] [stdout]     |          ^^^^^^^^^^^^ help: convert the identifier to snake case: `area_instance`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "bdd9db8cf61f74540bc04be8a39022458e582452b2bd44f5e77f0f3d03b4ea6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdd9db8cf61f74540bc04be8a39022458e582452b2bd44f5e77f0f3d03b4ea6f", kill_on_drop: false }`
[INFO] [stdout] bdd9db8cf61f74540bc04be8a39022458e582452b2bd44f5e77f0f3d03b4ea6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 0315e975db20ba71e7da7487cd32dbde1bef10129b0fa7984fa4a1deb1ed7e58
[INFO] running `Command { std: "docker" "start" "-a" "0315e975db20ba71e7da7487cd32dbde1bef10129b0fa7984fa4a1deb1ed7e58", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `File`, `HashMap`, `OpenOptions`, `Read`, and `any`
[INFO] [stderr]  --> src/printer.rs:1:25
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{collections::{HashMap, HashSet}, any, fs::{File, OpenOptions}, fmt::Display, io::{Write, Read}, i32};
[INFO] [stderr]   |                         ^^^^^^^            ^^^       ^^^^  ^^^^^^^^^^^                             ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg_state`
[INFO] [stderr]   --> src/printer.rs:95:7
[INFO] [stderr]    |
[INFO] [stderr] 95 |   let msg_state: Message = Message::Move { x: 2, y: 4 };
[INFO] [stderr]    |       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg_state`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/printer.rs:115:7
[INFO] [stderr]     |
[INFO] [stderr] 115 |   let mut name = "Testing.......";
[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: `student_age`
[INFO] [stderr]    --> src/printer.rs:268:7
[INFO] [stderr]     |
[INFO] [stderr] 268 |   let student_age: Ages = Ages(12, 16, 18);
[INFO] [stderr]     |       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_student_age`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/printer.rs:473:7
[INFO] [stderr]     |
[INFO] [stderr] 473 |   let mut a = [10, 20, 30];
[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/printer.rs:475:7
[INFO] [stderr]     |
[INFO] [stderr] 475 |   let mut iter = a.iter();
[INFO] [stderr]     |       ----^^^^
[INFO] [stderr]     |       |
[INFO] [stderr]     |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LENGTH` is never used
[INFO] [stderr]  --> src/printer.rs:3:7
[INFO] [stderr]   |
[INFO] [stderr] 3 | const LENGTH: u32 = 20;
[INFO] [stderr]   |       ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `printer_fn` is never used
[INFO] [stderr]  --> src/printer.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn printer_fn() {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `machine_type` is never used
[INFO] [stderr]   --> src/printer.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn machine_type() {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `looping` is never used
[INFO] [stderr]   --> src/printer.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub fn looping() {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `loop_while` is never used
[INFO] [stderr]   --> src/printer.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn loop_while() {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `loop_for` is never used
[INFO] [stderr]   --> src/printer.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn loop_for() {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Days` is never used
[INFO] [stderr]   --> src/printer.rs:71:6
[INFO] [stderr]    |
[INFO] [stderr] 71 | enum Days {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `usin_enum` is never used
[INFO] [stderr]   --> src/printer.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn usin_enum() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_constants` is never used
[INFO] [stderr]   --> src/printer.rs:98:8
[INFO] [stderr]    |
[INFO] [stderr] 98 | pub fn using_constants() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_tuple` is never used
[INFO] [stderr]    --> src/printer.rs:104:8
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub fn using_tuple() { // can store value of different data type
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_str` is never used
[INFO] [stderr]    --> src/printer.rs:114:8
[INFO] [stderr]     |
[INFO] [stderr] 114 | pub fn print_str() {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_array` is never used
[INFO] [stderr]    --> src/printer.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 | pub fn using_array() { // can only store value of the same data time
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_arr` is never used
[INFO] [stderr]    --> src/printer.rs:158:8
[INFO] [stderr]     |
[INFO] [stderr] 158 | pub fn print_arr(arr: &mut[i32;4]) {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_borrowing` is never used
[INFO] [stderr]    --> src/printer.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |  pub fn using_borrowing() {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_slice` is never used
[INFO] [stderr]    --> src/printer.rs:212:8
[INFO] [stderr]     |
[INFO] [stderr] 212 | pub fn using_slice() {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_struct` is never used
[INFO] [stderr]    --> src/printer.rs:231:8
[INFO] [stderr]     |
[INFO] [stderr] 231 | pub fn using_struct() {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `method_in_struct` is never used
[INFO] [stderr]    --> src/printer.rs:274:8
[INFO] [stderr]     |
[INFO] [stderr] 274 | pub fn method_in_struct() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `area` is never used
[INFO] [stderr]    --> src/printer.rs:279:10
[INFO] [stderr]     |
[INFO] [stderr] 278 |   impl  Rectangle {
[INFO] [stderr]     |   --------------- method in this implementation
[INFO] [stderr] 279 |       fn area(&self) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `static_struct_method` is never used
[INFO] [stderr]    --> src/printer.rs:287:8
[INFO] [stderr]     |
[INFO] [stderr] 287 | pub fn static_struct_method() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `areaInstance` and `area` are never used
[INFO] [stderr]    --> src/printer.rs:292:10
[INFO] [stderr]     |
[INFO] [stderr] 291 |   impl  Rectangle {
[INFO] [stderr]     |   --------------- associated items in this implementation
[INFO] [stderr] 292 |       fn areaInstance(w: u32, h: u32) -> Rectangle {
[INFO] [stderr]     |          ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 295 |       fn area(&self) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `option_enum` is never used
[INFO] [stderr]    --> src/printer.rs:303:8
[INFO] [stderr]     |
[INFO] [stderr] 303 | pub fn option_enum() {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_vector` is never used
[INFO] [stderr]    --> src/printer.rs:329:8
[INFO] [stderr]     |
[INFO] [stderr] 329 | pub fn using_vector() {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_hashmap` is never used
[INFO] [stderr]    --> src/printer.rs:345:8
[INFO] [stderr]     |
[INFO] [stderr] 345 | pub fn using_hashmap() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `working_on_errors` is never used
[INFO] [stderr]    --> src/printer.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | pub fn working_on_errors() -> Result<bool, String> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_generics` is never used
[INFO] [stderr]    --> src/printer.rs:385:8
[INFO] [stderr]     |
[INFO] [stderr] 385 | pub fn using_generics() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_traits` is never used
[INFO] [stderr]    --> src/printer.rs:400:8
[INFO] [stderr]     |
[INFO] [stderr] 400 | pub fn using_traits() {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_write` is never used
[INFO] [stderr]    --> src/printer.rs:429:8
[INFO] [stderr]     |
[INFO] [stderr] 429 | pub fn read_write() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `working_with_file` is never used
[INFO] [stderr]    --> src/printer.rs:450:8
[INFO] [stderr]     |
[INFO] [stderr] 450 | pub fn working_with_file() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `working_with_iterators` is never used
[INFO] [stderr]    --> src/printer.rs:472:8
[INFO] [stderr]     |
[INFO] [stderr] 472 | pub fn working_with_iterators() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_closure` is never used
[INFO] [stderr]    --> src/printer.rs:491:8
[INFO] [stderr]     |
[INFO] [stderr] 491 | pub fn using_closure() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `using_smart_pointers` is never used
[INFO] [stderr]    --> src/printer.rs:499:8
[INFO] [stderr]     |
[INFO] [stderr] 499 | pub fn using_smart_pointers() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `areaInstance` should have a snake case name
[INFO] [stderr]    --> src/printer.rs:292:10
[INFO] [stderr]     |
[INFO] [stderr] 292 |       fn areaInstance(w: u32, h: u32) -> Rectangle {
[INFO] [stderr]     |          ^^^^^^^^^^^^ help: convert the identifier to snake case: `area_instance`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `HelloWorld` (bin "HelloWorld" test) generated 38 warnings (run `cargo fix --bin "HelloWorld" --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/HelloWorld-bf995e3fe6c8462b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: test failed, to rerun pass `--bin HelloWorld`
[INFO] [stdout] test should_fail ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- should_fail stdout ----
[INFO] [stdout] thread 'should_fail' panicked at src/main.rs:13:5:
[INFO] [stdout] not implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5f0e4a9c955a - 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:     0x5f0e4a9c955a - 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:     0x5f0e4a9c955a - std::sys::backtrace::_print_fmt::hc4546b8364a537c6
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5f0e4a9c955a - <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:     0x5f0e4a9ee7e3 - core::fmt::rt::Argument::fmt::h270f6602a2b96f62
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5f0e4a9ee7e3 - core::fmt::write::h7550c97b06c86515
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/mod.rs:1186:21
[INFO] [stdout]    6:     0x5f0e4a9c6723 - std::io::Write::write_fmt::h509ff860e5956e5e
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/io/mod.rs:1839:15
[INFO] [stdout]    7:     0x5f0e4a9c93a2 - std::sys::backtrace::BacktraceLock::print::h2395ccd2c84ba3aa
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5f0e4a9ca9ba - std::panicking::default_hook::{{closure}}::he19d4c7230e07961
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5f0e4a9ca7c4 - std::panicking::default_hook::hf614597d3c67bbdb
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x5f0e4a9960a9 - <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:     0x5f0e4a9960a9 - test::test_main::{{closure}}::he977ae839a582784
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:133:21
[INFO] [stdout]   12:     0x5f0e4a9cb058 - <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:     0x5f0e4a9cb058 - std::panicking::rust_panic_with_hook::h8942133a8b252070
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x5f0e4a9cade6 - std::panicking::begin_panic_handler::{{closure}}::hb5f5963570096b29
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:667:13
[INFO] [stdout]   15:     0x5f0e4a9c9a39 - std::sys::backtrace::__rust_end_short_backtrace::h6208cedc1922feda
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5f0e4a9caaac - rust_begin_unwind
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x5f0e4a95ca50 - core::panicking::panic_fmt::h0c3082644d1bf418
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x5f0e4a95cadc - core::panicking::panic::h957f98c65a3b3074
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panicking.rs:148:5
[INFO] [stdout]   19:     0x5f0e4a95dd9d - HelloWorld::should_fail::h6529b36a53167b5e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:13:5
[INFO] [stdout]   20:     0x5f0e4a95dd67 - HelloWorld::should_fail::{{closure}}::h49d3bbad7b9e14ca
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:12:17
[INFO] [stdout]   21:     0x5f0e4a95d626 - core::ops::function::FnOnce::call_once::h21ecb9e060aba706
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5f0e4a99aa6b - core::ops::function::FnOnce::call_once::h109cf8051a59b34e
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5f0e4a99aa6b - test::__rust_begin_short_backtrace::hf4fff89d377446ba
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:621:18
[INFO] [stdout]   24:     0x5f0e4a99a2a7 - test::run_test_in_process::{{closure}}::h0e39181dd7ee5a43
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:644:60
[INFO] [stdout]   25:     0x5f0e4a99a2a7 - <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]   26:     0x5f0e4a99a2a7 - std::panicking::try::do_call::h873b7cf639554a5e
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   27:     0x5f0e4a99a2a7 - std::panicking::try::hdb19862fad9c8bd1
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   28:     0x5f0e4a99a2a7 - std::panic::catch_unwind::h281fe732d236d260
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   29:     0x5f0e4a99a2a7 - test::run_test_in_process::h949b6df8457ed338
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:644:27
[INFO] [stdout]   30:     0x5f0e4a99a2a7 - test::run_test::{{closure}}::h52c556a6d4740e10
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:565:43
[INFO] [stdout]   31:     0x5f0e4a95f584 - test::run_test::{{closure}}::h4237f6381c45ccb9
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/test/src/lib.rs:595:41
[INFO] [stdout]   32:     0x5f0e4a95f584 - std::sys::backtrace::__rust_begin_short_backtrace::h505c97a579eca628
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   33:     0x5f0e4a962c4e - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h9e86b2e2bc107ea3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/thread/mod.rs:538:17
[INFO] [stdout]   34:     0x5f0e4a962c4e - <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]   35:     0x5f0e4a962c4e - std::panicking::try::do_call::hb26ecd7cd9a9355d
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   36:     0x5f0e4a962c4e - std::panicking::try::h8ddeca9d705f9069
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   37:     0x5f0e4a962c4e - std::panic::catch_unwind::h49e1c33078844c46
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   38:     0x5f0e4a962c4e - std::thread::Builder::spawn_unchecked_::{{closure}}::h6073db6ff56ad35d
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/thread/mod.rs:537:30
[INFO] [stdout]   39:     0x5f0e4a962c4e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2c5a5f3779c774f1
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x5f0e4a9cedab - <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]   41:     0x5f0e4a9cedab - <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]   42:     0x5f0e4a9cedab - 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]   43:     0x72ec805e4ac3 - <unknown>
[INFO] [stdout]   44:     0x72ec80675a04 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     should_fail
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0315e975db20ba71e7da7487cd32dbde1bef10129b0fa7984fa4a1deb1ed7e58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0315e975db20ba71e7da7487cd32dbde1bef10129b0fa7984fa4a1deb1ed7e58", kill_on_drop: false }`
[INFO] [stdout] 0315e975db20ba71e7da7487cd32dbde1bef10129b0fa7984fa4a1deb1ed7e58
