[INFO] cloning repository https://github.com/CMU-Blockchain-Group/rust-workshop-0 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CMU-Blockchain-Group/rust-workshop-0" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 88e8e82df47bb6e2955ab850f906248baad9c8fe [INFO] testing CMU-Blockchain-Group/rust-workshop-0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 [INFO] finished tweaking git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 [INFO] tweaked toml for git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] 703deaeb2337a29f9c5468987c32d8ec665060c9c6a11abc4822b4c7a87cda8f [INFO] running `Command { std: "docker" "start" "-a" "703deaeb2337a29f9c5468987c32d8ec665060c9c6a11abc4822b4c7a87cda8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "703deaeb2337a29f9c5468987c32d8ec665060c9c6a11abc4822b4c7a87cda8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "703deaeb2337a29f9c5468987c32d8ec665060c9c6a11abc4822b4c7a87cda8f", kill_on_drop: false }` [INFO] [stdout] 703deaeb2337a29f9c5468987c32d8ec665060c9c6a11abc4822b4c7a87cda8f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f95f7731291d644d99ae7f2ba772cb2d0e6d714638336a6999bbdf76f1cbf41a [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" "f95f7731291d644d99ae7f2ba772cb2d0e6d714638336a6999bbdf76f1cbf41a", kill_on_drop: false }` [INFO] [stderr] Compiling rust-workshop-0 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/main.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let buf = string_to_mine.as_bytes(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:3:18 [INFO] [stdout] | [INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/exercises.rs:3:31 [INFO] [stdout] | [INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:14:18 [INFO] [stdout] | [INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/exercises.rs:14:33 [INFO] [stdout] | [INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `play` [INFO] [stdout] --> src/exercises.rs:27:17 [INFO] [stdout] | [INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_play` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:34:16 [INFO] [stdout] | [INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/exercises.rs:34:27 [INFO] [stdout] | [INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/exercises.rs:40:16 [INFO] [stdout] | [INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:48:28 [INFO] [stdout] | [INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `strs` [INFO] [stdout] --> src/exercises.rs:55:28 [INFO] [stdout] | [INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_strs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `swap_two_ints` [INFO] [stdout] --> src/exercises.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Rectangle` [INFO] [stdout] --> src/exercises.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rect_overlaps` [INFO] [stdout] --> src/exercises.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `RockPaperScissors` [INFO] [stdout] --> src/exercises.rs:19:6 [INFO] [stdout] | [INFO] [stdout] 19 | enum RockPaperScissors { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rps_weakness` [INFO] [stdout] --> src/exercises.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `dot_product` [INFO] [stdout] --> src/exercises.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_n_fib` [INFO] [stdout] --> src/exercises.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `recursive_binary_search` [INFO] [stdout] --> src/exercises.rs:48:4 [INFO] [stdout] | [INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `flatten_slice_of_slices` [INFO] [stdout] --> src/exercises.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `DIFFICULTY` [INFO] [stdout] --> src/main.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 | const DIFFICULTY: usize = 4; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.80s [INFO] running `Command { std: "docker" "inspect" "f95f7731291d644d99ae7f2ba772cb2d0e6d714638336a6999bbdf76f1cbf41a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f95f7731291d644d99ae7f2ba772cb2d0e6d714638336a6999bbdf76f1cbf41a", kill_on_drop: false }` [INFO] [stdout] f95f7731291d644d99ae7f2ba772cb2d0e6d714638336a6999bbdf76f1cbf41a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9cffb0f6e677f3a55ead9ff550006a4aaa465b97462cdc3e2b72ed5990754dec [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" "9cffb0f6e677f3a55ead9ff550006a4aaa465b97462cdc3e2b72ed5990754dec", kill_on_drop: false }` [INFO] [stderr] Compiling rust-workshop-0 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/main.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let buf = string_to_mine.as_bytes(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:3:18 [INFO] [stdout] | [INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/exercises.rs:3:31 [INFO] [stdout] | [INFO] [stdout] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:14:18 [INFO] [stdout] | [INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/exercises.rs:14:33 [INFO] [stdout] | [INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `play` [INFO] [stdout] --> src/exercises.rs:27:17 [INFO] [stdout] | [INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_play` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:34:16 [INFO] [stdout] | [INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/exercises.rs:34:27 [INFO] [stdout] | [INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/exercises.rs:40:16 [INFO] [stdout] | [INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/exercises.rs:48:28 [INFO] [stdout] | [INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `strs` [INFO] [stdout] --> src/exercises.rs:55:28 [INFO] [stdout] | [INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_strs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Rectangle` [INFO] [stdout] --> src/exercises.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rect_overlaps` [INFO] [stdout] --> src/exercises.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `RockPaperScissors` [INFO] [stdout] --> src/exercises.rs:19:6 [INFO] [stdout] | [INFO] [stdout] 19 | enum RockPaperScissors { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rps_weakness` [INFO] [stdout] --> src/exercises.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `dot_product` [INFO] [stdout] --> src/exercises.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_n_fib` [INFO] [stdout] --> src/exercises.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn first_n_fib(n: usize) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `recursive_binary_search` [INFO] [stdout] --> src/exercises.rs:48:4 [INFO] [stdout] | [INFO] [stdout] 48 | fn recursive_binary_search(a: &[i32]) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `flatten_slice_of_slices` [INFO] [stdout] --> src/exercises.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `DIFFICULTY` [INFO] [stdout] --> src/main.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 | const DIFFICULTY: usize = 4; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.85s [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "9cffb0f6e677f3a55ead9ff550006a4aaa465b97462cdc3e2b72ed5990754dec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cffb0f6e677f3a55ead9ff550006a4aaa465b97462cdc3e2b72ed5990754dec", kill_on_drop: false }` [INFO] [stdout] 9cffb0f6e677f3a55ead9ff550006a4aaa465b97462cdc3e2b72ed5990754dec [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] a82af8dde67b285e164006fe4f360f7aef0ace1e18ed5e4f1aa469112478e077 [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" "a82af8dde67b285e164006fe4f360f7aef0ace1e18ed5e4f1aa469112478e077", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: unused variable: `buf` [INFO] [stdout] running 1 test [INFO] [stderr] --> src/main.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | let buf = string_to_mine.as_bytes(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/exercises.rs:3:18 [INFO] [stderr] | [INFO] [stderr] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/exercises.rs:3:31 [INFO] [stderr] | [INFO] [stderr] 3 | fn swap_two_ints(a: &mut i32, b: &mut i32) { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/exercises.rs:14:18 [INFO] [stderr] | [INFO] [stderr] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/exercises.rs:14:33 [INFO] [stderr] | [INFO] [stderr] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `play` [INFO] [stderr] --> src/exercises.rs:27:17 [INFO] [stderr] | [INFO] [stderr] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_play` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/exercises.rs:34:16 [INFO] [stderr] | [INFO] [stderr] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/exercises.rs:34:27 [INFO] [stderr] | [INFO] [stderr] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/exercises.rs:40:16 [INFO] [stderr] | [INFO] [stderr] 40 | fn first_n_fib(n: usize) -> Vec { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/exercises.rs:48:28 [INFO] [stderr] | [INFO] [stderr] 48 | fn recursive_binary_search(a: &[i32]) -> Option { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `strs` [INFO] [stderr] --> src/exercises.rs:55:28 [INFO] [stderr] | [INFO] [stderr] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_strs` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Rectangle` [INFO] [stderr] --> src/exercises.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | struct Rectangle { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rect_overlaps` [INFO] [stderr] --> src/exercises.rs:14:4 [INFO] [stderr] | [INFO] [stderr] 14 | fn rect_overlaps(a: &Rectangle, b: &Rectangle) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `RockPaperScissors` [INFO] [stderr] --> src/exercises.rs:19:6 [INFO] [stderr] | [INFO] [stderr] 19 | enum RockPaperScissors { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rps_weakness` [INFO] [stderr] --> src/exercises.rs:27:4 [INFO] [stderr] | [INFO] [stderr] 27 | fn rps_weakness(play: RockPaperScissors) -> RockPaperScissors { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `dot_product` [INFO] [stderr] --> src/exercises.rs:34:4 [INFO] [stderr] | [INFO] [stderr] 34 | fn dot_product(a: &[i32], b: &[i32]) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_n_fib` [INFO] [stderr] --> src/exercises.rs:40:4 [INFO] [stderr] | [INFO] [stderr] 40 | fn first_n_fib(n: usize) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `recursive_binary_search` [INFO] [stderr] --> src/exercises.rs:48:4 [INFO] [stderr] | [INFO] [stderr] 48 | fn recursive_binary_search(a: &[i32]) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `flatten_slice_of_slices` [INFO] [stderr] --> src/exercises.rs:55:4 [INFO] [stderr] | [INFO] [stderr] 55 | fn flatten_slice_of_slices(strs: &[&[&str]]) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant is never used: `DIFFICULTY` [INFO] [stderr] --> src/main.rs:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | const DIFFICULTY: usize = 4; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `rust-workshop-0` (bin "rust-workshop-0" test) generated 20 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_workshop_0-32c13550026aa815) [INFO] [stdout] test exercises::tests::test_swap_two_ints ... FAILED [INFO] [stderr] error: test failed, to rerun pass '--bin rust-workshop-0' [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- exercises::tests::test_swap_two_ints stdout ---- [INFO] [stdout] thread 'exercises::tests::test_swap_two_ints' panicked at 'not implemented', src/exercises.rs:5:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55ddb28cc12c - std::backtrace_rs::backtrace::libunwind::trace::h793e05efd273d0f4 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x55ddb28cc12c - std::backtrace_rs::backtrace::trace_unsynchronized::h640b7b86ff610c77 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55ddb28cc12c - std::sys_common::backtrace::_print_fmt::h362fa2a4f354f877 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x55ddb28cc12c - ::fmt::hf439e5ed84c74abd [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x55ddb28eee5c - core::fmt::write::h72801a82c94e6ff1 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/fmt/mod.rs:1149:17 [INFO] [stdout] 5: 0x55ddb28c80d5 - std::io::Write::write_fmt::h54337adeb3504c03 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/io/mod.rs:1697:15 [INFO] [stdout] 6: 0x55ddb28cdb80 - std::sys_common::backtrace::_print::hb29ddd998d02631c [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x55ddb28cdb80 - std::sys_common::backtrace::print::h81965e3d7c90fbb6 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x55ddb28cdb80 - std::panicking::default_hook::{{closure}}::h84db205ab6674b38 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:211:50 [INFO] [stdout] 9: 0x55ddb28cd766 - std::panicking::default_hook::h1bf8bb4159936bca [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:225:9 [INFO] [stdout] 10: 0x55ddb28ce234 - std::panicking::rust_panic_with_hook::hf8e86850fbbd03b1 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:606:17 [INFO] [stdout] 11: 0x55ddb28cdce2 - std::panicking::begin_panic_handler::{{closure}}::h590a0d6060ff866e [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:500:13 [INFO] [stdout] 12: 0x55ddb28cc5e4 - std::sys_common::backtrace::__rust_end_short_backtrace::h260b8bd1c848a03c [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys_common/backtrace.rs:139:18 [INFO] [stdout] 13: 0x55ddb28cdc79 - rust_begin_unwind [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:498:5 [INFO] [stdout] 14: 0x55ddb2874861 - core::panicking::panic_fmt::h7b8580d81fcbbacd [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/panicking.rs:106:14 [INFO] [stdout] 15: 0x55ddb28747ad - core::panicking::panic::h50b51d19800453c0 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/panicking.rs:47:5 [INFO] [stdout] 16: 0x55ddb287553a - rust_workshop_0::exercises::swap_two_ints::h6f09feb5613a282d [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:5:2 [INFO] [stdout] 17: 0x55ddb2875206 - rust_workshop_0::exercises::tests::test_swap_two_ints::heead839137131566 [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:68:3 [INFO] [stdout] 18: 0x55ddb28751ca - rust_workshop_0::exercises::tests::test_swap_two_ints::{{closure}}::h4138829042e343c4 [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:65:2 [INFO] [stdout] 19: 0x55ddb287572e - core::ops::function::FnOnce::call_once::h1caaff8ce50be53e [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x55ddb28a9ce3 - core::ops::function::FnOnce::call_once::h24a32b9da1a40fdb [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 21: 0x55ddb28a9ce3 - test::__rust_begin_short_backtrace::h3c3a0492fb4a12eb [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/test/src/lib.rs:585:5 [INFO] [stdout] 22: 0x55ddb28a88f7 - as core::ops::function::FnOnce>::call_once::h9a8e38435f73d5e0 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/alloc/src/boxed.rs:1694:9 [INFO] [stdout] 23: 0x55ddb28a88f7 - as core::ops::function::FnOnce<()>>::call_once::hb23d7496a0e6d1b4 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x55ddb28a88f7 - std::panicking::try::do_call::ha2bb9825b32d2cc2 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:406:40 [INFO] [stdout] 25: 0x55ddb28a88f7 - std::panicking::try::hdc38a574bbebc53e [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:370:19 [INFO] [stdout] 26: 0x55ddb28a88f7 - std::panic::catch_unwind::hc45ed246595c621c [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panic.rs:133:14 [INFO] [stdout] 27: 0x55ddb28a88f7 - test::run_test_in_process::h4249138faaea8d54 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/test/src/lib.rs:608:18 [INFO] [stdout] 28: 0x55ddb28a88f7 - test::run_test::run_test_inner::{{closure}}::h3c1b37669f6e9fd7 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/test/src/lib.rs:500:39 [INFO] [stdout] 29: 0x55ddb2875b9e - test::run_test::run_test_inner::{{closure}}::h388760469edd5c24 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/test/src/lib.rs:527:37 [INFO] [stdout] 30: 0x55ddb2875b9e - std::sys_common::backtrace::__rust_begin_short_backtrace::hbbaecdcfad18643e [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys_common/backtrace.rs:123:18 [INFO] [stdout] 31: 0x55ddb287a8f8 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h09cd3ca65896da91 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/thread/mod.rs:484:17 [INFO] [stdout] 32: 0x55ddb287a8f8 - as core::ops::function::FnOnce<()>>::call_once::hc52dbb4f9088d18b [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x55ddb287a8f8 - std::panicking::try::do_call::h4485cfee22b11c08 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:406:40 [INFO] [stdout] 34: 0x55ddb287a8f8 - std::panicking::try::hb62aa8549e20c08b [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panicking.rs:370:19 [INFO] [stdout] 35: 0x55ddb287a8f8 - std::panic::catch_unwind::ha322c7a5bc666762 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/panic.rs:133:14 [INFO] [stdout] 36: 0x55ddb287a8f8 - std::thread::Builder::spawn_unchecked::{{closure}}::h1076fc1398603b77 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/thread/mod.rs:483:30 [INFO] [stdout] 37: 0x55ddb287a8f8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h911e510344167353 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 38: 0x55ddb28d2cc3 - as core::ops::function::FnOnce>::call_once::h771719d52c343434 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/alloc/src/boxed.rs:1694:9 [INFO] [stdout] 39: 0x55ddb28d2cc3 - as core::ops::function::FnOnce>::call_once::hf441746dfa4b0f57 [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/alloc/src/boxed.rs:1694:9 [INFO] [stdout] 40: 0x55ddb28d2cc3 - std::sys::unix::thread::Thread::new::thread_start::hfd168f9d312b29ca [INFO] [stdout] at /rustc/8262275854dc0e5381c9d42d56257d94932c5a87/library/std/src/sys/unix/thread.rs:106:17 [INFO] [stdout] 41: 0x7f4bfadce609 - start_thread [INFO] [stdout] 42: 0x7f4bfaba0293 - clone [INFO] [stdout] 43: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] exercises::tests::test_swap_two_ints [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "a82af8dde67b285e164006fe4f360f7aef0ace1e18ed5e4f1aa469112478e077", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a82af8dde67b285e164006fe4f360f7aef0ace1e18ed5e4f1aa469112478e077", kill_on_drop: false }` [INFO] [stdout] a82af8dde67b285e164006fe4f360f7aef0ace1e18ed5e4f1aa469112478e077