[INFO] cloning repository https://github.com/msgridin/cheat-sheat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/msgridin/cheat-sheat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsgridin%2Fcheat-sheat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsgridin%2Fcheat-sheat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48df9878ed906efce1c0ccde9d12faa16ea51025
[INFO] testing msgridin/cheat-sheat against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsgridin%2Fcheat-sheat" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/msgridin/cheat-sheat on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/msgridin/cheat-sheat
[INFO] finished tweaking git repo https://github.com/msgridin/cheat-sheat
[INFO] tweaked toml for git repo https://github.com/msgridin/cheat-sheat written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate git repo https://github.com/msgridin/cheat-sheat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52d9bf913806451de31a60d5bc4f439cfb3aac96e2743a7e5d7f371be90b71f9
[INFO] running `Command { std: "docker" "start" "-a" "52d9bf913806451de31a60d5bc4f439cfb3aac96e2743a7e5d7f371be90b71f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52d9bf913806451de31a60d5bc4f439cfb3aac96e2743a7e5d7f371be90b71f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d9bf913806451de31a60d5bc4f439cfb3aac96e2743a7e5d7f371be90b71f9", kill_on_drop: false }`
[INFO] [stdout] 52d9bf913806451de31a60d5bc4f439cfb3aac96e2743a7e5d7f371be90b71f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dac4383974e9fbfe3a288fe9d084c368220ebf22649329f74fa2788cb4266d5
[INFO] running `Command { std: "docker" "start" "-a" "0dac4383974e9fbfe3a288fe9d084c368220ebf22649329f74fa2788cb4266d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling cheat-sheet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/control_flow/mod.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/control_flow/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             break;
[INFO] [stdout]    |             ----- any code following this expression is unreachable
[INFO] [stdout] 25 |             break 'outer;
[INFO] [stdout]    |             ^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let b: bool = true;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u8`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let u8: u8 = 0;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u16`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let u16: u16 = 0;
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u32`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let u32 = 0;
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u64`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let u64: u64 = 0;
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u128`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let u128: u128 = 0;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_u128`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i8`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let i8 = 0i8;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_i8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i16`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let i16 = 0i16;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let i32 = 0;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i64`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let i64 = 0i64;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i128`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let i128 = 0i128;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_i128`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f32`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let f32 = 0.0f32;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_f32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f64`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f64 = 0.;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `isize`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let isize = 0isize;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `usize`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let usize = 0usize;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_usize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let char = 'c'; // unicode value
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let str = "&str"; // string slice
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let string = "String"; // owned string
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tuple`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let tuple = ("Team A", 7, 0.5);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_tuple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let slice = &array[..];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let user = User {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let black = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let cmd = Command::Quit;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let cmd = Command::Move { x: 1, y: 2 };
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let cmd = Command::Speak("Hi".to_string());
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let cmd = Command::Color(0, 0, 0);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/control_flow/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let result = loop {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `boolean`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn boolean() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unsigned_integers`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn unsigned_integers() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `signed_integers`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn signed_integers() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `floating_point_numbers`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn floating_point_numbers() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `platform_specific_integers`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn platform_specific_integers() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn string() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn tuple() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `array`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn array() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hash_map`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn hash_map() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `structure`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn structure() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enumeration`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn enumeration() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `constant`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn constant() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `static_variables`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn static_variables() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `type_alias`
[INFO] [stdout]    --> src/basic_types_and_variables/mod.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn type_alias() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `if_and_if_let`
[INFO] [stdout]  --> src/control_flow/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn if_and_if_let() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `loops`
[INFO] [stdout]   --> src/control_flow/mod.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn loops() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nested_loops_and_labels`
[INFO] [stdout]   --> src/control_flow/mod.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn nested_loops_and_labels() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returning_from_loop`
[INFO] [stdout]   --> src/control_flow/mod.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn returning_from_loop() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_and_while_let`
[INFO] [stdout]   --> src/control_flow/mod.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn while_and_while_let() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loop`
[INFO] [stdout]   --> src/control_flow/mod.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn for_loop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.79s
[INFO] running `Command { std: "docker" "inspect" "0dac4383974e9fbfe3a288fe9d084c368220ebf22649329f74fa2788cb4266d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dac4383974e9fbfe3a288fe9d084c368220ebf22649329f74fa2788cb4266d5", kill_on_drop: false }`
[INFO] [stdout] 0dac4383974e9fbfe3a288fe9d084c368220ebf22649329f74fa2788cb4266d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ac90a35a89bc431bf3f0f40f0228156c49c6b92d7575eec4f80480db98c0545
[INFO] running `Command { std: "docker" "start" "-a" "2ac90a35a89bc431bf3f0f40f0228156c49c6b92d7575eec4f80480db98c0545", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cheat-sheet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/control_flow/mod.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/control_flow/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             break;
[INFO] [stdout]    |             ----- any code following this expression is unreachable
[INFO] [stdout] 25 |             break 'outer;
[INFO] [stdout]    |             ^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let b: bool = true;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u8`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let u8: u8 = 0;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u16`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let u16: u16 = 0;
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u32`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let u32 = 0;
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u64`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let u64: u64 = 0;
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u128`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let u128: u128 = 0;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_u128`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i8`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let i8 = 0i8;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_i8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i16`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let i16 = 0i16;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let i32 = 0;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i64`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let i64 = 0i64;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i128`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let i128 = 0i128;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_i128`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f32`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let f32 = 0.0f32;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_f32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f64`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f64 = 0.;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `isize`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let isize = 0isize;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `usize`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let usize = 0usize;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_usize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `char`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let char = 'c'; // unicode value
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let str = "&str"; // string slice
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let string = "String"; // owned string
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tuple`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let tuple = ("Team A", 7, 0.5);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_tuple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let slice = &array[..];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let user = User {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let black = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let cmd = Command::Quit;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let cmd = Command::Move { x: 1, y: 2 };
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let cmd = Command::Speak("Hi".to_string());
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let cmd = Command::Color(0, 0, 0);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/control_flow/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let result = loop {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `boolean`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn boolean() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unsigned_integers`
[INFO] [stdout]  --> src/basic_types_and_variables/mod.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn unsigned_integers() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `signed_integers`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn signed_integers() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `floating_point_numbers`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn floating_point_numbers() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `platform_specific_integers`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn platform_specific_integers() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn string() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn tuple() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `array`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn array() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hash_map`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn hash_map() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `structure`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn structure() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enumeration`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn enumeration() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `constant`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn constant() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `static_variables`
[INFO] [stdout]   --> src/basic_types_and_variables/mod.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn static_variables() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `type_alias`
[INFO] [stdout]    --> src/basic_types_and_variables/mod.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn type_alias() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `if_and_if_let`
[INFO] [stdout]  --> src/control_flow/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn if_and_if_let() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `loops`
[INFO] [stdout]   --> src/control_flow/mod.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn loops() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nested_loops_and_labels`
[INFO] [stdout]   --> src/control_flow/mod.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn nested_loops_and_labels() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returning_from_loop`
[INFO] [stdout]   --> src/control_flow/mod.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn returning_from_loop() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_and_while_let`
[INFO] [stdout]   --> src/control_flow/mod.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn while_and_while_let() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loop`
[INFO] [stdout]   --> src/control_flow/mod.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn for_loop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.76s
[INFO] running `Command { std: "docker" "inspect" "2ac90a35a89bc431bf3f0f40f0228156c49c6b92d7575eec4f80480db98c0545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac90a35a89bc431bf3f0f40f0228156c49c6b92d7575eec4f80480db98c0545", kill_on_drop: false }`
[INFO] [stdout] 2ac90a35a89bc431bf3f0f40f0228156c49c6b92d7575eec4f80480db98c0545
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 38e4a23adb4602e1d1a48442df26f26d192d79cf217d4fc82f4901a45cbedb59
[INFO] running `Command { std: "docker" "start" "-a" "38e4a23adb4602e1d1a48442df26f26d192d79cf217d4fc82f4901a45cbedb59", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/control_flow/mod.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         'inner: loop {
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/control_flow/mod.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |             break;
[INFO] [stderr]    |             ----- any code following this expression is unreachable
[INFO] [stderr] 25 |             break 'outer;
[INFO] [stderr]    |             ^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let b: bool = true;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u8`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let u8: u8 = 0;
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_u8`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u16`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let u16: u16 = 0;
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u16`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u32`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let u32 = 0;
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u32`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u64`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let u64: u64 = 0;
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_u64`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u128`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let u128: u128 = 0;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_u128`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i8`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let i8 = 0i8;
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_i8`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i16`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let i16 = 0i16;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i16`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i32`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let i32 = 0;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i64`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let i64 = 0i64;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i64`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i128`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let i128 = 0i128;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_i128`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f32`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let f32 = 0.0f32;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_f32`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f64`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let f64 = 0.;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_f64`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `isize`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let isize = 0isize;
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `usize`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let usize = 0usize;
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_usize`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `char`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let char = 'c'; // unicode value
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_char`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `str`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let str = "&str"; // string slice
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let string = "String"; // owned string
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tuple`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let tuple = ("Team A", 7, 0.5);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_tuple`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `slice`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let slice = &array[..];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let user = User {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let cmd = Command::Quit;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let cmd = Command::Move { x: 1, y: 2 };
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:84:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |     let cmd = Command::Speak("Hi".to_string());
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let cmd = Command::Color(0, 0, 0);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/control_flow/mod.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let result = loop {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `boolean`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn boolean() {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unsigned_integers`
[INFO] [stderr]  --> src/basic_types_and_variables/mod.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn unsigned_integers() {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `signed_integers`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn signed_integers() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `floating_point_numbers`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn floating_point_numbers() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `platform_specific_integers`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn platform_specific_integers() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn string() {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuple`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn tuple() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `array`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn array() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hash_map`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn hash_map() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `structure`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn structure() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enumeration`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:74:4
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn enumeration() {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `constant`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn constant() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `static_variables`
[INFO] [stderr]   --> src/basic_types_and_variables/mod.rs:93:4
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn static_variables() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `type_alias`
[INFO] [stderr]    --> src/basic_types_and_variables/mod.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn type_alias() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_and_if_let`
[INFO] [stderr]  --> src/control_flow/mod.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn if_and_if_let() {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `loops`
[INFO] [stderr]   --> src/control_flow/mod.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn loops() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nested_loops_and_labels`
[INFO] [stderr]   --> src/control_flow/mod.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn nested_loops_and_labels() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `returning_from_loop`
[INFO] [stderr]   --> src/control_flow/mod.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn returning_from_loop() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_and_while_let`
[INFO] [stderr]   --> src/control_flow/mod.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn while_and_while_let() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `for_loop`
[INFO] [stderr]   --> src/control_flow/mod.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn for_loop() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `cheat-sheet` (bin "cheat-sheet" test) generated 49 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 20.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cheat_sheet-6d2de3a0496c815d)
[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" "38e4a23adb4602e1d1a48442df26f26d192d79cf217d4fc82f4901a45cbedb59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e4a23adb4602e1d1a48442df26f26d192d79cf217d4fc82f4901a45cbedb59", kill_on_drop: false }`
[INFO] [stdout] 38e4a23adb4602e1d1a48442df26f26d192d79cf217d4fc82f4901a45cbedb59