[INFO] cloning repository https://github.com/tmanas06/rust_basic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tmanas06/rust_basic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmanas06%2Frust_basic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmanas06%2Frust_basic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c632984983fb1e49bc1fb978cd974528c4d466f7
[INFO] testing tmanas06/rust_basic against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmanas06%2Frust_basic" "/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/tmanas06/rust_basic
[INFO] finished tweaking git repo https://github.com/tmanas06/rust_basic
[INFO] tweaked toml for git repo https://github.com/tmanas06/rust_basic written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tmanas06/rust_basic on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tmanas06/rust_basic 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e15cf63bfa2e7374117436b0a2d3255fadd52f43a628801672abf420dbbf057
[INFO] running `Command { std: "docker" "start" "-a" "9e15cf63bfa2e7374117436b0a2d3255fadd52f43a628801672abf420dbbf057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e15cf63bfa2e7374117436b0a2d3255fadd52f43a628801672abf420dbbf057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e15cf63bfa2e7374117436b0a2d3255fadd52f43a628801672abf420dbbf057", kill_on_drop: false }`
[INFO] [stdout] 9e15cf63bfa2e7374117436b0a2d3255fadd52f43a628801672abf420dbbf057
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b735a19d3648cb874fa612d4957d9e3cd2e2ac2b0932ff5d57d64656712a86a6
[INFO] running `Command { std: "docker" "start" "-a" "b735a19d3648cb874fa612d4957d9e3cd2e2ac2b0932ff5d57d64656712a86a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling first_program v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::hash`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::hash;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread::JoinHandle`
[INFO] [stdout]  --> src/main.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{thread::JoinHandle, vec};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `point` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     struct point {
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case: `Point`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `red` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         red,
[INFO] [stdout]    |         ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `green` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         green,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         blue,
[INFO] [stdout]    |         ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let float: f64 = 3.14;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_float`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chars`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let chars: char = 'a';
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chars`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boolean`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let boolean: bool = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_boolean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num1` is never read
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut num1: i32 = 10;
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num2`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let num2: i32 = 20;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `point` is never constructed
[INFO] [stdout]   --> src/main.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     struct point {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `green` and `blue` are never constructed
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     enum Color {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 72 |         red,
[INFO] [stdout] 73 |         green,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 74 |         blue,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "b735a19d3648cb874fa612d4957d9e3cd2e2ac2b0932ff5d57d64656712a86a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b735a19d3648cb874fa612d4957d9e3cd2e2ac2b0932ff5d57d64656712a86a6", kill_on_drop: false }`
[INFO] [stdout] b735a19d3648cb874fa612d4957d9e3cd2e2ac2b0932ff5d57d64656712a86a6
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e95bb2d8c844babecddc2e169772bfd6a1298bcef0055fb32f32c6140f722bf1
[INFO] running `Command { std: "docker" "start" "-a" "e95bb2d8c844babecddc2e169772bfd6a1298bcef0055fb32f32c6140f722bf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling first_program v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::hash`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::hash;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread::JoinHandle`
[INFO] [stdout]  --> src/main.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{thread::JoinHandle, vec};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `point` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     struct point {
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case: `Point`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `red` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         red,
[INFO] [stdout]    |         ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `green` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         green,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         blue,
[INFO] [stdout]    |         ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let float: f64 = 3.14;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_float`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chars`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let chars: char = 'a';
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chars`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boolean`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let boolean: bool = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_boolean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num1` is never read
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut num1: i32 = 10;
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num2`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let num2: i32 = 20;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "e95bb2d8c844babecddc2e169772bfd6a1298bcef0055fb32f32c6140f722bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e95bb2d8c844babecddc2e169772bfd6a1298bcef0055fb32f32c6140f722bf1", kill_on_drop: false }`
[INFO] [stdout] e95bb2d8c844babecddc2e169772bfd6a1298bcef0055fb32f32c6140f722bf1
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 036246b07c769107ccfef0036b7c0ce6943b6d9aa3dcdeb8739cfac20bf631d4
[INFO] running `Command { std: "docker" "start" "-a" "036246b07c769107ccfef0036b7c0ce6943b6d9aa3dcdeb8739cfac20bf631d4", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `core::hash`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::hash;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread::JoinHandle`
[INFO] [stderr]  --> src/main.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{thread::JoinHandle, vec};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `point` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     struct point {
[INFO] [stderr]    |            ^^^^^ help: convert the identifier to upper camel case: `Point`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `red` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         red,
[INFO] [stderr]    |         ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `green` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         green,
[INFO] [stderr]    |         ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `blue` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         blue,
[INFO] [stderr]    |         ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `float`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let float: f64 = 3.14;
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_float`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chars`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let chars: char = 'a';
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chars`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `boolean`
[INFO] [stderr]   --> src/main.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let boolean: bool = true;
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_boolean`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `num1` is never read
[INFO] [stderr]   --> src/main.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut num1: i32 = 10;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num2`
[INFO] [stderr]   --> src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let num2: i32 = 20;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_num2`
[INFO] [stderr] 
[INFO] [stderr] warning: `first_program` (bin "first_program" test) generated 11 warnings (run `cargo fix --bin "first_program" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/first_program-82fc602fec28d50f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "036246b07c769107ccfef0036b7c0ce6943b6d9aa3dcdeb8739cfac20bf631d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "036246b07c769107ccfef0036b7c0ce6943b6d9aa3dcdeb8739cfac20bf631d4", kill_on_drop: false }`
[INFO] [stdout] 036246b07c769107ccfef0036b7c0ce6943b6d9aa3dcdeb8739cfac20bf631d4