[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 master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyberGA%2FHelloWorld" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[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-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CyberGA/HelloWorld on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 419a4f55cedb862e220000090db7aef322e1737ea2aa05633daa9a0909f0ac54
[INFO] running `Command { std: "docker" "start" "-a" "419a4f55cedb862e220000090db7aef322e1737ea2aa05633daa9a0909f0ac54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "419a4f55cedb862e220000090db7aef322e1737ea2aa05633daa9a0909f0ac54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "419a4f55cedb862e220000090db7aef322e1737ea2aa05633daa9a0909f0ac54", kill_on_drop: false }`
[INFO] [stdout] 419a4f55cedb862e220000090db7aef322e1737ea2aa05633daa9a0909f0ac54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d216654bd2d8343a251cb2421e89893c9ddd79f533c06270d3f0d7ef64ab048
[INFO] running `Command { std: "docker" "start" "-a" "7d216654bd2d8343a251cb2421e89893c9ddd79f533c06270d3f0d7ef64ab048", 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 0.32s
[INFO] running `Command { std: "docker" "inspect" "7d216654bd2d8343a251cb2421e89893c9ddd79f533c06270d3f0d7ef64ab048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d216654bd2d8343a251cb2421e89893c9ddd79f533c06270d3f0d7ef64ab048", kill_on_drop: false }`
[INFO] [stdout] 7d216654bd2d8343a251cb2421e89893c9ddd79f533c06270d3f0d7ef64ab048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee3d9f88a458e71fdd34c1b6eed814d403dfc4470971af2055b53071d2f8cc98
[INFO] running `Command { std: "docker" "start" "-a" "ee3d9f88a458e71fdd34c1b6eed814d403dfc4470971af2055b53071d2f8cc98", 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 0.51s
[INFO] running `Command { std: "docker" "inspect" "ee3d9f88a458e71fdd34c1b6eed814d403dfc4470971af2055b53071d2f8cc98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee3d9f88a458e71fdd34c1b6eed814d403dfc4470971af2055b53071d2f8cc98", kill_on_drop: false }`
[INFO] [stdout] ee3d9f88a458e71fdd34c1b6eed814d403dfc4470971af2055b53071d2f8cc98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 386cfd8659ea052307b008be720b15c95720e6543dc75a7248b8564b4a93b05b
[INFO] running `Command { std: "docker" "start" "-a" "386cfd8659ea052307b008be720b15c95720e6543dc75a7248b8564b4a93b05b", 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] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] running 1 test
[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 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/HelloWorld-6f1d1e981de9e2cc)
[INFO] [stdout] test should_fail ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- should_fail stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'should_fail' panicked at src/main.rs:13:5:
[INFO] [stdout] not implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ed07a571872 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5ed07a571872 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5ed07a571872 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5ed07a571872 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5ed07a596903 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5ed07a596903 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x5ed07a56ea53 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5ed07a56ea53 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5ed07a5716c2 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5ed07a572ddc - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5ed07a572c32 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5ed07a53ad14 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5ed07a53ad14 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5ed07a5737bb - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5ed07a5737bb - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5ed07a573556 - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x5ed07a571d69 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x5ed07a57321d - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5ed07a595480 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5ed07a5954ec - core::panicking::panic::h318cb8731d7e290d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x5ed07a5016ca - HelloWorld::should_fail::h780f64e10fa07307
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:13:5
[INFO] [stdout]   21:     0x5ed07a5016ca - HelloWorld::should_fail::{{closure}}::hdc1215cfb6702cd7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:12:17
[INFO] [stdout]   22:     0x5ed07a5016ca - core::ops::function::FnOnce::call_once::hee79076474bc1095
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5ed07a54049b - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5ed07a54049b - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   25:     0x5ed07a53f68e - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   26:     0x5ed07a53f68e - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5ed07a53f68e - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   28:     0x5ed07a53f68e - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   29:     0x5ed07a53f68e - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5ed07a53f68e - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   31:     0x5ed07a53f68e - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   32:     0x5ed07a503204 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   33:     0x5ed07a503204 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x5ed07a506bda - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5ed07a506bda - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5ed07a506bda - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   37:     0x5ed07a506bda - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   38:     0x5ed07a506bda - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5ed07a506bda - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5ed07a506bda - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5ed07a576717 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   42:     0x5ed07a576717 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x5ed07a576717 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   44:     0x7f7c495b3aa4 - <unknown>
[INFO] [stdout]   45:     0x7f7c49640a34 - clone
[INFO] [stdout]   46:                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 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin HelloWorld`
[INFO] running `Command { std: "docker" "inspect" "386cfd8659ea052307b008be720b15c95720e6543dc75a7248b8564b4a93b05b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386cfd8659ea052307b008be720b15c95720e6543dc75a7248b8564b4a93b05b", kill_on_drop: false }`
[INFO] [stdout] 386cfd8659ea052307b008be720b15c95720e6543dc75a7248b8564b4a93b05b
