[INFO] cloning repository https://github.com/hirotoe0112/my-first-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hirotoe0112/my-first-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirotoe0112%2Fmy-first-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirotoe0112%2Fmy-first-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 921983ff36c1d772486fbc058091e49b7afe0f97
[INFO] testing hirotoe0112/my-first-rust against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirotoe0112%2Fmy-first-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hirotoe0112/my-first-rust
[INFO] finished tweaking git repo https://github.com/hirotoe0112/my-first-rust
[INFO] tweaked toml for git repo https://github.com/hirotoe0112/my-first-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hirotoe0112/my-first-rust on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hirotoe0112/my-first-rust 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004
[INFO] running `Command { std: "docker" "start" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_lesson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let a1: i8 = 1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let a2 = 1.1111;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let a3 = 123i16;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let g = 1;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `A`
[INFO] [stdout]    |
[INFO] [stdout] 48 -     let g = 1;
[INFO] [stdout] 48 +     let A = 1;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let _g = 1;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let f = 1 as f64;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flg`
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let flg = true;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_flg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let (x, y) = t2;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `A`
[INFO] [stdout]    |
[INFO] [stdout] 67 -     let (x, y) = t2;
[INFO] [stdout] 67 +     let (x, A) = t2;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let (x, _y) = t2;
[INFO] [stdout]    |             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let u = ();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr3`
[INFO] [stdout]   --> src/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let arr3 = ["aaa"; 100];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char`
[INFO] [stdout]    --> src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let char = 'a';
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char2`
[INFO] [stdout]    --> src/main.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let char2 = '§';
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_char2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2`
[INFO] [stdout]    --> src/main.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let str2 = String::from("aaaaa");
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str3`
[INFO] [stdout]    --> src/main.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let str3 = str.to_string();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `A` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const A: i32 = 1;
[INFO] [stdout]   |       ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ABC` is never used
[INFO] [stdout]   --> src/main.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 |     const ABC: i32 = 1;
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_lesson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let a1: i8 = 1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let a2 = 1.1111;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let a3 = 123i16;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let g = 1;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `A`
[INFO] [stdout]    |
[INFO] [stdout] 48 -     let g = 1;
[INFO] [stdout] 48 +     let A = 1;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let _g = 1;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let f = 1 as f64;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flg`
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let flg = true;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_flg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let (x, y) = t2;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `A`
[INFO] [stdout]    |
[INFO] [stdout] 67 -     let (x, y) = t2;
[INFO] [stdout] 67 +     let (x, A) = t2;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let (x, _y) = t2;
[INFO] [stdout]    |             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let u = ();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr3`
[INFO] [stdout]   --> src/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let arr3 = ["aaa"; 100];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char`
[INFO] [stdout]    --> src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let char = 'a';
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char2`
[INFO] [stdout]    --> src/main.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let char2 = '§';
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_char2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str2`
[INFO] [stdout]    --> src/main.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let str2 = String::from("aaaaa");
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str3`
[INFO] [stdout]    --> src/main.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let str3 = str.to_string();
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `A` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const A: i32 = 1;
[INFO] [stdout]   |       ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ABC` is never used
[INFO] [stdout]   --> src/main.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 |     const ABC: i32 = 1;
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `a1`
[INFO] [stderr]   --> src/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let a1: i8 = 1;
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a2`
[INFO] [stderr]   --> src/main.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let a2 = 1.1111;
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a3`
[INFO] [stderr]   --> src/main.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let a3 = 123i16;
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/main.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let g = 1;
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named constant `A`
[INFO] [stderr]    |
[INFO] [stderr] 48 -     let g = 1;
[INFO] [stderr] 48 +     let A = 1;
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let _g = 1;
[INFO] [stderr]    |         +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/main.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let f = 1 as f64;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flg`
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let flg = true;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_flg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let (x, y) = t2;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named constant `A`
[INFO] [stderr]    |
[INFO] [stderr] 67 -     let (x, y) = t2;
[INFO] [stderr] 67 +     let (x, A) = t2;
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let (x, _y) = t2;
[INFO] [stderr]    |             +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/main.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let u = ();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arr3`
[INFO] [stderr]   --> src/main.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let arr3 = ["aaa"; 100];
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `char`
[INFO] [stderr]    --> src/main.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 |     let char = 'a';
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `char2`
[INFO] [stderr]    --> src/main.rs:137:9
[INFO] [stderr]     |
[INFO] [stderr] 137 |     let char2 = '§';
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_char2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `str2`
[INFO] [stderr]    --> src/main.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let str2 = String::from("aaaaa");
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `str3`
[INFO] [stderr]    --> src/main.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |     let str3 = str.to_string();
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_str3`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `A` is never used
[INFO] [stderr]  --> src/main.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const A: i32 = 1;
[INFO] [stderr]   |       ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ABC` is never used
[INFO] [stderr]   --> src/main.rs:34:11
[INFO] [stderr]    |
[INFO] [stderr] 34 |     const ABC: i32 = 1;
[INFO] [stderr]    |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_lesson` (bin "rust_lesson" test) generated 15 warnings (run `cargo fix --bin "rust_lesson" -p rust_lesson --tests` to apply 13 suggestions)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/build/rust_lesson/150198000ea96361/out/rust_lesson-150198000ea96361)
[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" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004", kill_on_drop: false }`
[INFO] [stdout] 0925e5e4016eb113ac00ff43a190173e2eecab703436d64e97098bab70d95004
