[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 1.59.0 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-3/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" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fa4e6af24e03f8f083cd3b8a365883c2122c2f8fca2ef4a218446b57576c5713 [INFO] running `Command { std: "docker" "start" "-a" "fa4e6af24e03f8f083cd3b8a365883c2122c2f8fca2ef4a218446b57576c5713", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fa4e6af24e03f8f083cd3b8a365883c2122c2f8fca2ef4a218446b57576c5713", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fa4e6af24e03f8f083cd3b8a365883c2122c2f8fca2ef4a218446b57576c5713", kill_on_drop: false }` [INFO] [stdout] fa4e6af24e03f8f083cd3b8a365883c2122c2f8fca2ef4a218446b57576c5713 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2c87187218c45dc45ac154fea5aa892d47328c3bfc6823df08ff8c00ec08636d [INFO] running `Command { std: "docker" "start" "-a" "2c87187218c45dc45ac154fea5aa892d47328c3bfc6823df08ff8c00ec08636d", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.10s [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "2c87187218c45dc45ac154fea5aa892d47328c3bfc6823df08ff8c00ec08636d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2c87187218c45dc45ac154fea5aa892d47328c3bfc6823df08ff8c00ec08636d", kill_on_drop: false }` [INFO] [stdout] 2c87187218c45dc45ac154fea5aa892d47328c3bfc6823df08ff8c00ec08636d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6abffd1ca60e1208e68b946bd29c1c43ced67c95e892ba0ca03f7af2ae55e8cf [INFO] running `Command { std: "docker" "start" "-a" "6abffd1ca60e1208e68b946bd29c1c43ced67c95e892ba0ca03f7af2ae55e8cf", 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] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.47s [INFO] running `Command { std: "docker" "inspect" "6abffd1ca60e1208e68b946bd29c1c43ced67c95e892ba0ca03f7af2ae55e8cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6abffd1ca60e1208e68b946bd29c1c43ced67c95e892ba0ca03f7af2ae55e8cf", kill_on_drop: false }` [INFO] [stdout] 6abffd1ca60e1208e68b946bd29c1c43ced67c95e892ba0ca03f7af2ae55e8cf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 54d421c5e6e8a1d8df6c758d8ea9c63001d20bf57239025408441803241a461a [INFO] running `Command { std: "docker" "start" "-a" "54d421c5e6e8a1d8df6c758d8ea9c63001d20bf57239025408441803241a461a", 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 0.21s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_workshop_0-27069c90c0ccf8b8) [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: 0x560e231485dc - std::backtrace_rs::backtrace::libunwind::trace::h91c465e73bf6c785 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x560e231485dc - std::backtrace_rs::backtrace::trace_unsynchronized::hae9da36f5d58b5f3 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x560e231485dc - std::sys_common::backtrace::_print_fmt::h7f499fa126a7effb [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x560e231485dc - ::fmt::h3e2b509ce2ce6007 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x560e2316decc - core::fmt::write::h753c7571fa063ecb [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/fmt/mod.rs:1168:17 [INFO] [stdout] 5: 0x560e23143843 - std::io::Write::write_fmt::hb649ab67f71b6655 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/io/mod.rs:1660:15 [INFO] [stdout] 6: 0x560e2314acb2 - std::sys_common::backtrace::_print::h64941a6fc8b0ed9b [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x560e2314acb2 - std::sys_common::backtrace::print::hcf25e43e1a9b0766 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x560e2314acb2 - std::panicking::default_hook::{{closure}}::h78d3e6cf97fc623d [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:211:50 [INFO] [stdout] 9: 0x560e2314a901 - std::panicking::default_hook::hda898f8d3ad1a5ae [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:225:9 [INFO] [stdout] 10: 0x560e2314b303 - std::panicking::rust_panic_with_hook::h1a5ea2d6c23051aa [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:606:17 [INFO] [stdout] 11: 0x560e2314aff2 - std::panicking::begin_panic_handler::{{closure}}::h07f549390938b73f [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:500:13 [INFO] [stdout] 12: 0x560e23148a84 - std::sys_common::backtrace::__rust_end_short_backtrace::h5ec3758a92cfb00d [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:139:18 [INFO] [stdout] 13: 0x560e2314ad59 - rust_begin_unwind [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:498:5 [INFO] [stdout] 14: 0x560e230f1dc1 - core::panicking::panic_fmt::h3a79a6a99affe1d5 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panicking.rs:116:14 [INFO] [stdout] 15: 0x560e230f1d0d - core::panicking::panic::h97167cd315d19cd4 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panicking.rs:48:5 [INFO] [stdout] 16: 0x560e230f28ba - rust_workshop_0::exercises::swap_two_ints::h556f96d108a98049 [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:5:2 [INFO] [stdout] 17: 0x560e230f2ae6 - rust_workshop_0::exercises::tests::test_swap_two_ints::h05d65da77a1e2ed9 [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:68:3 [INFO] [stdout] 18: 0x560e230f2aaa - rust_workshop_0::exercises::tests::test_swap_two_ints::{{closure}}::h812cf8bf6131e71d [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:65:2 [INFO] [stdout] 19: 0x560e230f267e - core::ops::function::FnOnce::call_once::h03c7b80d1057b4ee [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x560e2311e533 - core::ops::function::FnOnce::call_once::h1845a80638abc06e [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 21: 0x560e2311e533 - test::__rust_begin_short_backtrace::h4f56ccea01b9889f [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:574:5 [INFO] [stdout] 22: 0x560e2311d21f - as core::ops::function::FnOnce>::call_once::h5afedf14a39ffa74 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/alloc/src/boxed.rs:1854:9 [INFO] [stdout] 23: 0x560e2311d21f - as core::ops::function::FnOnce<()>>::call_once::hd5aaa1b551e9ce71 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x560e2311d21f - std::panicking::try::do_call::h316eebee63f96d32 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:406:40 [INFO] [stdout] 25: 0x560e2311d21f - std::panicking::try::h662e31e84dd7ce52 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:370:19 [INFO] [stdout] 26: 0x560e2311d21f - std::panic::catch_unwind::h129c1b23f076663f [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panic.rs:133:14 [INFO] [stdout] 27: 0x560e2311d21f - test::run_test_in_process::h51d800d572f878ef [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:597:18 [INFO] [stdout] 28: 0x560e2311d21f - test::run_test::run_test_inner::{{closure}}::h71a47db430260854 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:491:39 [INFO] [stdout] 29: 0x560e231265e1 - test::run_test::run_test_inner::{{closure}}::h02edd5b3e2dab52a [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/test/src/lib.rs:518:37 [INFO] [stdout] 30: 0x560e231265e1 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0838cfc8b0e995ec [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys_common/backtrace.rs:123:18 [INFO] [stdout] 31: 0x560e230f306f - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h4c2725d7078043cd [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/thread/mod.rs:477:17 [INFO] [stdout] 32: 0x560e230f306f - as core::ops::function::FnOnce<()>>::call_once::hdf1aa612eed87270 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x560e230f306f - std::panicking::try::do_call::hc72f8de3706d18d6 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:406:40 [INFO] [stdout] 34: 0x560e230f306f - std::panicking::try::h63f01f54dbd0fb87 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panicking.rs:370:19 [INFO] [stdout] 35: 0x560e230f306f - std::panic::catch_unwind::h58bc464ae9b26453 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/panic.rs:133:14 [INFO] [stdout] 36: 0x560e230f306f - std::thread::Builder::spawn_unchecked::{{closure}}::h6c065e19513e33e3 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/thread/mod.rs:476:30 [INFO] [stdout] 37: 0x560e230f306f - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd143450c74f35c32 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 38: 0x560e23150e83 - as core::ops::function::FnOnce>::call_once::h49b6c7c5155a2296 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/alloc/src/boxed.rs:1854:9 [INFO] [stdout] 39: 0x560e23150e83 - as core::ops::function::FnOnce>::call_once::ha8b5234bfeb15105 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/alloc/src/boxed.rs:1854:9 [INFO] [stdout] 40: 0x560e23150e83 - std::sys::unix::thread::Thread::new::thread_start::h6f207dd842d64859 [INFO] [stdout] at /rustc/9d1b2106e23b1abd32fce1f17267604a5102f57a/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7fd192d3c609 - start_thread [INFO] [stdout] 42: 0x7fd192b0e293 - 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" "54d421c5e6e8a1d8df6c758d8ea9c63001d20bf57239025408441803241a461a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54d421c5e6e8a1d8df6c758d8ea9c63001d20bf57239025408441803241a461a", kill_on_drop: false }` [INFO] [stdout] 54d421c5e6e8a1d8df6c758d8ea9c63001d20bf57239025408441803241a461a