[INFO] cloning repository https://github.com/WooZoo86/RustLearn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WooZoo86/RustLearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWooZoo86%2FRustLearn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWooZoo86%2FRustLearn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e07e7874bd18442a8d0dcaaf5535f9afaebb04da [INFO] testing WooZoo86/RustLearn against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWooZoo86%2FRustLearn" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/WooZoo86/RustLearn on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/WooZoo86/RustLearn [INFO] finished tweaking git repo https://github.com/WooZoo86/RustLearn [INFO] tweaked toml for git repo https://github.com/WooZoo86/RustLearn written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/WooZoo86/RustLearn already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7fe02de36074045a804e6c8ad4b11f20cb83743b44c279d436b564496ccf088b [INFO] running `Command { std: "docker" "start" "-a" "7fe02de36074045a804e6c8ad4b11f20cb83743b44c279d436b564496ccf088b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7fe02de36074045a804e6c8ad4b11f20cb83743b44c279d436b564496ccf088b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7fe02de36074045a804e6c8ad4b11f20cb83743b44c279d436b564496ccf088b", kill_on_drop: false }` [INFO] [stdout] 7fe02de36074045a804e6c8ad4b11f20cb83743b44c279d436b564496ccf088b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] dde2b771be5ed2746c746633795342880ffb5c8b120e8b997c2815e6109c8f1b [INFO] running `Command { std: "docker" "start" "-a" "dde2b771be5ed2746c746633795342880ffb5c8b120e8b997c2815e6109c8f1b", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling RustLearn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/main.rs:595:9 [INFO] [stdout] | [INFO] [stdout] 595 | 'second: loop { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/main.rs:601:13 [INFO] [stdout] | [INFO] [stdout] 601 | 'third: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `mem` is imported redundantly [INFO] [stdout] --> src/main.rs:823:9 [INFO] [stdout] | [INFO] [stdout] 823 | use std::mem; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 837 | use std::mem; [INFO] [stdout] | -------- the item `mem` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:929:5 [INFO] [stdout] | [INFO] [stdout] 928 | diverging(); [INFO] [stdout] | ----------- any code following this expression is unreachable [INFO] [stdout] 929 | println!("never come to this line"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `age` is never read [INFO] [stdout] --> src/main.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 53 | let mut age = AGE; //caution:we define a new variable to override the preview variable [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/main.rs:154:16 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:154:19 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/main.rs:154:25 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m` [INFO] [stdout] --> src/main.rs:154:28 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `mutable_variable` is assigned to, but never used [INFO] [stdout] --> src/main.rs:374:13 [INFO] [stdout] | [INFO] [stdout] 374 | let mut mutable_variable = 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_mutable_variable` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_variable` [INFO] [stdout] --> src/main.rs:375:9 [INFO] [stdout] | [INFO] [stdout] 375 | let immutable_variable = 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_variable` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `mutable_variable` is never read [INFO] [stdout] --> src/main.rs:377:5 [INFO] [stdout] | [INFO] [stdout] 377 | mutable_variable = 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `freezing_variable` is never read [INFO] [stdout] --> src/main.rs:395:13 [INFO] [stdout] | [INFO] [stdout] 395 | let mut freezing_variable = 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `freezing_variable` [INFO] [stdout] --> src/main.rs:398:13 [INFO] [stdout] | [INFO] [stdout] 398 | let freezing_variable = 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_freezing_variable` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_integer` [INFO] [stdout] --> src/main.rs:470:9 [INFO] [stdout] | [INFO] [stdout] 470 | let a_integer = a_float as i8; //this is ok,we explicit the type [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `alia_int` [INFO] [stdout] --> src/main.rs:507:9 [INFO] [stdout] | [INFO] [stdout] 507 | let alia_int: Integer = 1; //we can use the aliasing type [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_alia_int` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `org_string` [INFO] [stdout] --> src/main.rs:511:9 [INFO] [stdout] | [INFO] [stdout] 511 | let org_string = String::from(org_str); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_org_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/main.rs:532:9 [INFO] [stdout] | [INFO] [stdout] 532 | let num: i32 = "2".parse().unwrap(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_spec` [INFO] [stdout] --> src/main.rs:533:9 [INFO] [stdout] | [INFO] [stdout] 533 | let num_spec = "3".parse::().unwrap(); //specific type [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spec` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `loop_counter` is never read [INFO] [stdout] --> src/main.rs:603:17 [INFO] [stdout] | [INFO] [stdout] 603 | loop_counter += 1; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `consume` [INFO] [stdout] --> src/main.rs:825:9 [INFO] [stdout] | [INFO] [stdout] 825 | let consume = || { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_consume` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Blue` [INFO] [stdout] --> src/main.rs:312:5 [INFO] [stdout] | [INFO] [stdout] 312 | Blue, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Yellow` [INFO] [stdout] --> src/main.rs:313:5 [INFO] [stdout] | [INFO] [stdout] 313 | Yellow, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Monday` [INFO] [stdout] --> src/main.rs:319:5 [INFO] [stdout] | [INFO] [stdout] 319 | Monday = 1, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Tuesday` [INFO] [stdout] --> src/main.rs:320:5 [INFO] [stdout] | [INFO] [stdout] 320 | Tuesday = 2, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Wednesday` [INFO] [stdout] --> src/main.rs:321:5 [INFO] [stdout] | [INFO] [stdout] 321 | Wednesday = 3, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Friday` [INFO] [stdout] --> src/main.rs:323:5 [INFO] [stdout] | [INFO] [stdout] 323 | Friday = 5, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Saturday` [INFO] [stdout] --> src/main.rs:324:5 [INFO] [stdout] | [INFO] [stdout] 324 | Saturday = 6, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Sunday` [INFO] [stdout] --> src/main.rs:325:5 [INFO] [stdout] | [INFO] [stdout] 325 | Sunday = 7, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Multiply` [INFO] [stdout] --> src/main.rs:331:5 [INFO] [stdout] | [INFO] [stdout] 331 | Multiply { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Subtract` [INFO] [stdout] --> src/main.rs:332:5 [INFO] [stdout] | [INFO] [stdout] 332 | Subtract(i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `max` [INFO] [stdout] --> src/main.rs:408:5 [INFO] [stdout] | [INFO] [stdout] 408 | max: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Numbers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:406:10 [INFO] [stdout] | [INFO] [stdout] 406 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `min` [INFO] [stdout] --> src/main.rs:409:5 [INFO] [stdout] | [INFO] [stdout] 409 | min: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Numbers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:406:10 [INFO] [stdout] | [INFO] [stdout] 406 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `RustLearn` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `rust_learn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: path statement with no effect [INFO] [stdout] --> src/main.rs:546:5 [INFO] [stdout] | [INFO] [stdout] 546 | x; //still a statement [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(path_statements)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/main.rs:547:5 [INFO] [stdout] | [INFO] [stdout] 547 | x + 1; [INFO] [stdout] | ^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 547 | let _ = x + 1; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 37 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.59s [INFO] running `Command { std: "docker" "inspect" "dde2b771be5ed2746c746633795342880ffb5c8b120e8b997c2815e6109c8f1b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dde2b771be5ed2746c746633795342880ffb5c8b120e8b997c2815e6109c8f1b", kill_on_drop: false }` [INFO] [stdout] dde2b771be5ed2746c746633795342880ffb5c8b120e8b997c2815e6109c8f1b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dd11d856e119b86390cec4f36aac74b967dba67192cfa951dc5ec38ab5ed91b6 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "dd11d856e119b86390cec4f36aac74b967dba67192cfa951dc5ec38ab5ed91b6", kill_on_drop: false }` [INFO] [stderr] Compiling RustLearn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/main.rs:595:9 [INFO] [stdout] | [INFO] [stdout] 595 | 'second: loop { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/main.rs:601:13 [INFO] [stdout] | [INFO] [stdout] 601 | 'third: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `mem` is imported redundantly [INFO] [stdout] --> src/main.rs:823:9 [INFO] [stdout] | [INFO] [stdout] 823 | use std::mem; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 837 | use std::mem; [INFO] [stdout] | -------- the item `mem` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:929:5 [INFO] [stdout] | [INFO] [stdout] 928 | diverging(); [INFO] [stdout] | ----------- any code following this expression is unreachable [INFO] [stdout] 929 | println!("never come to this line"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `age` is never read [INFO] [stdout] --> src/main.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 53 | let mut age = AGE; //caution:we define a new variable to override the preview variable [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/main.rs:154:16 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:154:19 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/main.rs:154:25 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m` [INFO] [stdout] --> src/main.rs:154:28 [INFO] [stdout] | [INFO] [stdout] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `mutable_variable` is assigned to, but never used [INFO] [stdout] --> src/main.rs:374:13 [INFO] [stdout] | [INFO] [stdout] 374 | let mut mutable_variable = 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_mutable_variable` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_variable` [INFO] [stdout] --> src/main.rs:375:9 [INFO] [stdout] | [INFO] [stdout] 375 | let immutable_variable = 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_variable` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `mutable_variable` is never read [INFO] [stdout] --> src/main.rs:377:5 [INFO] [stdout] | [INFO] [stdout] 377 | mutable_variable = 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `freezing_variable` is never read [INFO] [stdout] --> src/main.rs:395:13 [INFO] [stdout] | [INFO] [stdout] 395 | let mut freezing_variable = 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `freezing_variable` [INFO] [stdout] --> src/main.rs:398:13 [INFO] [stdout] | [INFO] [stdout] 398 | let freezing_variable = 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_freezing_variable` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_integer` [INFO] [stdout] --> src/main.rs:470:9 [INFO] [stdout] | [INFO] [stdout] 470 | let a_integer = a_float as i8; //this is ok,we explicit the type [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `alia_int` [INFO] [stdout] --> src/main.rs:507:9 [INFO] [stdout] | [INFO] [stdout] 507 | let alia_int: Integer = 1; //we can use the aliasing type [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_alia_int` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `org_string` [INFO] [stdout] --> src/main.rs:511:9 [INFO] [stdout] | [INFO] [stdout] 511 | let org_string = String::from(org_str); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_org_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/main.rs:532:9 [INFO] [stdout] | [INFO] [stdout] 532 | let num: i32 = "2".parse().unwrap(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_spec` [INFO] [stdout] --> src/main.rs:533:9 [INFO] [stdout] | [INFO] [stdout] 533 | let num_spec = "3".parse::().unwrap(); //specific type [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spec` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `loop_counter` is never read [INFO] [stdout] --> src/main.rs:603:17 [INFO] [stdout] | [INFO] [stdout] 603 | loop_counter += 1; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `consume` [INFO] [stdout] --> src/main.rs:825:9 [INFO] [stdout] | [INFO] [stdout] 825 | let consume = || { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_consume` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Blue` [INFO] [stdout] --> src/main.rs:312:5 [INFO] [stdout] | [INFO] [stdout] 312 | Blue, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Yellow` [INFO] [stdout] --> src/main.rs:313:5 [INFO] [stdout] | [INFO] [stdout] 313 | Yellow, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Monday` [INFO] [stdout] --> src/main.rs:319:5 [INFO] [stdout] | [INFO] [stdout] 319 | Monday = 1, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Tuesday` [INFO] [stdout] --> src/main.rs:320:5 [INFO] [stdout] | [INFO] [stdout] 320 | Tuesday = 2, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Wednesday` [INFO] [stdout] --> src/main.rs:321:5 [INFO] [stdout] | [INFO] [stdout] 321 | Wednesday = 3, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Friday` [INFO] [stdout] --> src/main.rs:323:5 [INFO] [stdout] | [INFO] [stdout] 323 | Friday = 5, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Saturday` [INFO] [stdout] --> src/main.rs:324:5 [INFO] [stdout] | [INFO] [stdout] 324 | Saturday = 6, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Sunday` [INFO] [stdout] --> src/main.rs:325:5 [INFO] [stdout] | [INFO] [stdout] 325 | Sunday = 7, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:317:10 [INFO] [stdout] | [INFO] [stdout] 317 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Multiply` [INFO] [stdout] --> src/main.rs:331:5 [INFO] [stdout] | [INFO] [stdout] 331 | Multiply { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Subtract` [INFO] [stdout] --> src/main.rs:332:5 [INFO] [stdout] | [INFO] [stdout] 332 | Subtract(i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `max` [INFO] [stdout] --> src/main.rs:408:5 [INFO] [stdout] | [INFO] [stdout] 408 | max: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Numbers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:406:10 [INFO] [stdout] | [INFO] [stdout] 406 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `min` [INFO] [stdout] --> src/main.rs:409:5 [INFO] [stdout] | [INFO] [stdout] 409 | min: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Numbers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/main.rs:406:10 [INFO] [stdout] | [INFO] [stdout] 406 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `RustLearn` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `rust_learn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: path statement with no effect [INFO] [stdout] --> src/main.rs:546:5 [INFO] [stdout] | [INFO] [stdout] 546 | x; //still a statement [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(path_statements)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/main.rs:547:5 [INFO] [stdout] | [INFO] [stdout] 547 | x + 1; [INFO] [stdout] | ^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 547 | let _ = x + 1; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 37 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.34s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/RustLearn-fa8ae7d6a04d44ce) [INFO] running `Command { std: "docker" "inspect" "dd11d856e119b86390cec4f36aac74b967dba67192cfa951dc5ec38ab5ed91b6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd11d856e119b86390cec4f36aac74b967dba67192cfa951dc5ec38ab5ed91b6", kill_on_drop: false }` [INFO] [stdout] dd11d856e119b86390cec4f36aac74b967dba67192cfa951dc5ec38ab5ed91b6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 3c3bffd2808588fd83aa520ccfbebb8eb06d1a9d9626ea5be2a6278e260eb810 [INFO] running `Command { std: "docker" "start" "-a" "3c3bffd2808588fd83aa520ccfbebb8eb06d1a9d9626ea5be2a6278e260eb810", kill_on_drop: false }` [INFO] [stderr] warning: unused label [INFO] [stderr] --> src/main.rs:595:9 [INFO] [stderr] | [INFO] [stderr] 595 | 'second: loop { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_labels)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused label [INFO] [stderr] --> src/main.rs:601:13 [INFO] [stderr] | [INFO] [stderr] 601 | 'third: loop { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: the item `mem` is imported redundantly [INFO] [stderr] --> src/main.rs:823:9 [INFO] [stderr] | [INFO] [stderr] 823 | use std::mem; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 837 | use std::mem; [INFO] [stderr] | -------- the item `mem` is already imported here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable statement [INFO] [stderr] --> src/main.rs:929:5 [INFO] [stderr] | [INFO] [stderr] 928 | diverging(); [INFO] [stderr] | ----------- any code following this expression is unreachable [INFO] [stderr] 929 | println!("never come to this line"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: value assigned to `age` is never read [INFO] [stderr] --> src/main.rs:53:13 [INFO] [stderr] | [INFO] [stderr] 53 | let mut age = AGE; //caution:we define a new variable to override the preview variable [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:154:13 [INFO] [stderr] | [INFO] [stderr] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:154:16 [INFO] [stderr] | [INFO] [stderr] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:154:19 [INFO] [stderr] | [INFO] [stderr] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `k` [INFO] [stderr] --> src/main.rs:154:25 [INFO] [stderr] | [INFO] [stderr] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `m` [INFO] [stderr] --> src/main.rs:154:28 [INFO] [stderr] | [INFO] [stderr] 154 | let (x, y, z, i, j, k, m) = var_tuple; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stderr] [INFO] [stderr] warning: variable `mutable_variable` is assigned to, but never used [INFO] [stderr] --> src/main.rs:374:13 [INFO] [stderr] | [INFO] [stderr] 374 | let mut mutable_variable = 1; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable_variable` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `immutable_variable` [INFO] [stderr] --> src/main.rs:375:9 [INFO] [stderr] | [INFO] [stderr] 375 | let immutable_variable = 2; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_variable` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable_variable` is never read [INFO] [stderr] --> src/main.rs:377:5 [INFO] [stderr] | [INFO] [stderr] 377 | mutable_variable = 3; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `freezing_variable` is never read [INFO] [stderr] --> src/main.rs:395:13 [INFO] [stderr] | [INFO] [stderr] 395 | let mut freezing_variable = 1; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `freezing_variable` [INFO] [stderr] --> src/main.rs:398:13 [INFO] [stderr] | [INFO] [stderr] 398 | let freezing_variable = 2; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_freezing_variable` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a_integer` [INFO] [stderr] --> src/main.rs:470:9 [INFO] [stderr] | [INFO] [stderr] 470 | let a_integer = a_float as i8; //this is ok,we explicit the type [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_integer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `alia_int` [INFO] [stderr] --> src/main.rs:507:9 [INFO] [stderr] | [INFO] [stderr] 507 | let alia_int: Integer = 1; //we can use the aliasing type [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_alia_int` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `org_string` [INFO] [stderr] --> src/main.rs:511:9 [INFO] [stderr] | [INFO] [stderr] 511 | let org_string = String::from(org_str); [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_org_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:532:9 [INFO] [stderr] | [INFO] [stderr] 532 | let num: i32 = "2".parse().unwrap(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_spec` [INFO] [stderr] --> src/main.rs:533:9 [INFO] [stderr] | [INFO] [stderr] 533 | let num_spec = "3".parse::().unwrap(); //specific type [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spec` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `loop_counter` is never read [INFO] [stderr] --> src/main.rs:603:17 [INFO] [stderr] | [INFO] [stderr] 603 | loop_counter += 1; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `consume` [INFO] [stderr] --> src/main.rs:825:9 [INFO] [stderr] | [INFO] [stderr] 825 | let consume = || { [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_consume` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Blue` [INFO] [stderr] --> src/main.rs:312:5 [INFO] [stderr] | [INFO] [stderr] 312 | Blue, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Yellow` [INFO] [stderr] --> src/main.rs:313:5 [INFO] [stderr] | [INFO] [stderr] 313 | Yellow, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Monday` [INFO] [stderr] --> src/main.rs:319:5 [INFO] [stderr] | [INFO] [stderr] 319 | Monday = 1, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:317:10 [INFO] [stderr] | [INFO] [stderr] 317 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Tuesday` [INFO] [stderr] --> src/main.rs:320:5 [INFO] [stderr] | [INFO] [stderr] 320 | Tuesday = 2, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:317:10 [INFO] [stderr] | [INFO] [stderr] 317 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Wednesday` [INFO] [stderr] --> src/main.rs:321:5 [INFO] [stderr] | [INFO] [stderr] 321 | Wednesday = 3, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:317:10 [INFO] [stderr] | [INFO] [stderr] 317 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Friday` [INFO] [stderr] --> src/main.rs:323:5 [INFO] [stderr] | [INFO] [stderr] 323 | Friday = 5, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:317:10 [INFO] [stderr] | [INFO] [stderr] 317 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Saturday` [INFO] [stderr] --> src/main.rs:324:5 [INFO] [stderr] | [INFO] [stderr] 324 | Saturday = 6, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:317:10 [INFO] [stderr] | [INFO] [stderr] 317 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Sunday` [INFO] [stderr] --> src/main.rs:325:5 [INFO] [stderr] | [INFO] [stderr] 325 | Sunday = 7, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `WeekDay` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:317:10 [INFO] [stderr] | [INFO] [stderr] 317 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Multiply` [INFO] [stderr] --> src/main.rs:331:5 [INFO] [stderr] | [INFO] [stderr] 331 | Multiply { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Subtract` [INFO] [stderr] --> src/main.rs:332:5 [INFO] [stderr] | [INFO] [stderr] 332 | Subtract(i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `max` [INFO] [stderr] --> src/main.rs:408:5 [INFO] [stderr] | [INFO] [stderr] 408 | max: i32, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Numbers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:406:10 [INFO] [stderr] | [INFO] [stderr] 406 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `min` [INFO] [stderr] --> src/main.rs:409:5 [INFO] [stderr] | [INFO] [stderr] 409 | min: i32, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Numbers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/main.rs:406:10 [INFO] [stderr] | [INFO] [stderr] 406 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: crate `RustLearn` should have a snake case name [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] = help: convert the identifier to snake case: `rust_learn` [INFO] [stderr] [INFO] [stderr] warning: path statement with no effect [INFO] [stderr] --> src/main.rs:546:5 [INFO] [stderr] | [INFO] [stderr] 546 | x; //still a statement [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(path_statements)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused arithmetic operation that must be used [INFO] [stderr] --> src/main.rs:547:5 [INFO] [stderr] | [INFO] [stderr] 547 | x + 1; [INFO] [stderr] | ^^^^^ the arithmetic operation produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 547 | let _ = x + 1; [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `RustLearn` (bin "RustLearn" test) generated 37 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/RustLearn-fa8ae7d6a04d44ce) [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" "3c3bffd2808588fd83aa520ccfbebb8eb06d1a9d9626ea5be2a6278e260eb810", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c3bffd2808588fd83aa520ccfbebb8eb06d1a9d9626ea5be2a6278e260eb810", kill_on_drop: false }` [INFO] [stdout] 3c3bffd2808588fd83aa520ccfbebb8eb06d1a9d9626ea5be2a6278e260eb810