[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 master#0d13f6afeba4935499abe0c9a07426c94492c94e for pr-96025 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCMU-Blockchain-Group%2Frust-workshop-0" "/workspace/builds/worker-63/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/CMU-Blockchain-Group/rust-workshop-0 on toolchain 0d13f6afeba4935499abe0c9a07426c94492c94e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "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-63/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" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7b49848ae8328c07e0cb6f78939ea71d3a257dce7ad6cbbe256771393ddc299d [INFO] running `Command { std: "docker" "start" "-a" "7b49848ae8328c07e0cb6f78939ea71d3a257dce7ad6cbbe256771393ddc299d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7b49848ae8328c07e0cb6f78939ea71d3a257dce7ad6cbbe256771393ddc299d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b49848ae8328c07e0cb6f78939ea71d3a257dce7ad6cbbe256771393ddc299d", kill_on_drop: false }` [INFO] [stdout] 7b49848ae8328c07e0cb6f78939ea71d3a257dce7ad6cbbe256771393ddc299d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f6c68f4609f42f21a3aaf42a5b37167bd869dc3ed9c2ec711d24d78ab12effcc [INFO] running `Command { std: "docker" "start" "-a" "f6c68f4609f42f21a3aaf42a5b37167bd869dc3ed9c2ec711d24d78ab12effcc", 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: 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] = note: `#[warn(dead_code)]` on by default [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] [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: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.98s [INFO] running `Command { std: "docker" "inspect" "f6c68f4609f42f21a3aaf42a5b37167bd869dc3ed9c2ec711d24d78ab12effcc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f6c68f4609f42f21a3aaf42a5b37167bd869dc3ed9c2ec711d24d78ab12effcc", kill_on_drop: false }` [INFO] [stdout] f6c68f4609f42f21a3aaf42a5b37167bd869dc3ed9c2ec711d24d78ab12effcc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e25bf3f3cb5956654dc9cd7e09dd8f96da71d0918caf75a2956d63c34dc784df [INFO] running `Command { std: "docker" "start" "-a" "e25bf3f3cb5956654dc9cd7e09dd8f96da71d0918caf75a2956d63c34dc784df", 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: 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] = 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: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.18s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_workshop_0-32c13550026aa815) [INFO] running `Command { std: "docker" "inspect" "e25bf3f3cb5956654dc9cd7e09dd8f96da71d0918caf75a2956d63c34dc784df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e25bf3f3cb5956654dc9cd7e09dd8f96da71d0918caf75a2956d63c34dc784df", kill_on_drop: false }` [INFO] [stdout] e25bf3f3cb5956654dc9cd7e09dd8f96da71d0918caf75a2956d63c34dc784df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 06a285ea9698b41f40368adff4fbfbb528f031f0f4f2c80029b2a66d2750b1d6 [INFO] running `Command { std: "docker" "start" "-a" "06a285ea9698b41f40368adff4fbfbb528f031f0f4f2c80029b2a66d2750b1d6", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused variable: `buf` [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: 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] = note: `#[warn(dead_code)]` on by default [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] 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: `rust-workshop-0` (bin "rust-workshop-0" test) generated 20 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.15s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_workshop_0-32c13550026aa815) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test exercises::tests::test_swap_two_ints ... FAILED [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: 0x5599b31cbafd - std::backtrace_rs::backtrace::libunwind::trace::h78ac1a8162560622 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x5599b31cbafd - std::backtrace_rs::backtrace::trace_unsynchronized::h524b37108170e058 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5599b31cbafd - std::sys_common::backtrace::_print_fmt::h6fc64e306477b488 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x5599b31cbafd - ::fmt::hebf1189a5210d658 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x5599b31ee39c - core::fmt::write::h2ee1c47f226b9713 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/fmt/mod.rs:1194:17 [INFO] [stdout] 5: 0x5599b31c8601 - std::io::Write::write_fmt::hfdd07f3252777e56 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/io/mod.rs:1655:15 [INFO] [stdout] 6: 0x5599b31cd5d5 - std::sys_common::backtrace::_print::h4cf4c3a5df78aa1b [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x5599b31cd5d5 - std::sys_common::backtrace::print::h563fffe6d3b49d9c [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x5599b31cd5d5 - std::panicking::default_hook::{{closure}}::h011bf968a019e6ec [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x5599b31cd280 - std::panicking::default_hook::hc87bc2048234ee21 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:311:9 [INFO] [stdout] 10: 0x5599b31cdba8 - std::panicking::rust_panic_with_hook::h51069032b7e7ea9f [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x5599b31cda19 - std::panicking::begin_panic_handler::{{closure}}::hd6f7b981150e82ee [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:586:13 [INFO] [stdout] 12: 0x5599b31cbfb4 - std::sys_common::backtrace::__rust_end_short_backtrace::h4e1327824e6ec426 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x5599b31cd789 - rust_begin_unwind [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x5599b3171613 - core::panicking::panic_fmt::hab126d972b27847d [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x5599b31714dd - core::panicking::panic::hfab074edc1d61428 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/panicking.rs:48:5 [INFO] [stdout] 16: 0x5599b3171bba - rust_workshop_0::exercises::swap_two_ints::h78de8139085760ec [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:5:2 [INFO] [stdout] 17: 0x5599b3171c06 - rust_workshop_0::exercises::tests::test_swap_two_ints::h7d98750985dcb78d [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:68:3 [INFO] [stdout] 18: 0x5599b3171bca - rust_workshop_0::exercises::tests::test_swap_two_ints::{{closure}}::hbb0bfb6e96b0986e [INFO] [stdout] at /opt/rustwide/workdir/src/exercises.rs:65:2 [INFO] [stdout] 19: 0x5599b3171d2e - core::ops::function::FnOnce::call_once::h0823385ae47c18d7 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 20: 0x5599b31a72f3 - core::ops::function::FnOnce::call_once::hb5269c40ea602927 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 21: 0x5599b31a72f3 - test::__rust_begin_short_backtrace::h39a42cc37c7f7ed5 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/test/src/lib.rs:573:5 [INFO] [stdout] 22: 0x5599b31a60aa - as core::ops::function::FnOnce>::call_once::h00241665904b35f8 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 23: 0x5599b31a60aa - as core::ops::function::FnOnce<()>>::call_once::he7accf8d0443853e [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x5599b31a60aa - std::panicking::try::do_call::h8cda4fd0453ea304 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:492:40 [INFO] [stdout] 25: 0x5599b31a60aa - std::panicking::try::heb9894546bccbe80 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:456:19 [INFO] [stdout] 26: 0x5599b31a60aa - std::panic::catch_unwind::hfbd25fb469936dab [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panic.rs:137:14 [INFO] [stdout] 27: 0x5599b31a60aa - test::run_test_in_process::hcffcac4908c29650 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/test/src/lib.rs:596:18 [INFO] [stdout] 28: 0x5599b31a60aa - test::run_test::run_test_inner::{{closure}}::hdd8d05d3b7659acd [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/test/src/lib.rs:490:39 [INFO] [stdout] 29: 0x5599b317236d - test::run_test::run_test_inner::{{closure}}::h1b7cafce81b35e92 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/test/src/lib.rs:517:37 [INFO] [stdout] 30: 0x5599b317236d - std::sys_common::backtrace::__rust_begin_short_backtrace::h08b4f3108673434a [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys_common/backtrace.rs:122:18 [INFO] [stdout] 31: 0x5599b3177da8 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hd589e3bca91eca1f [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/thread/mod.rs:498:17 [INFO] [stdout] 32: 0x5599b3177da8 - as core::ops::function::FnOnce<()>>::call_once::h1d80af9fe40fb31c [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x5599b3177da8 - std::panicking::try::do_call::hf7eabf04235f3bb3 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:492:40 [INFO] [stdout] 34: 0x5599b3177da8 - std::panicking::try::h4bdb1612b5a13d83 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panicking.rs:456:19 [INFO] [stdout] 35: 0x5599b3177da8 - std::panic::catch_unwind::h62e1449b19ecdfe5 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/panic.rs:137:14 [INFO] [stdout] 36: 0x5599b3177da8 - std::thread::Builder::spawn_unchecked_::{{closure}}::h10c97d98a69723ec [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/thread/mod.rs:497:30 [INFO] [stdout] 37: 0x5599b3177da8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h0dc62d4cd77dd031 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 38: 0x5599b31d24e3 - as core::ops::function::FnOnce>::call_once::h94b91777dd72cf4b [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 39: 0x5599b31d24e3 - as core::ops::function::FnOnce>::call_once::hc38439f882108053 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 40: 0x5599b31d24e3 - std::sys::unix::thread::Thread::new::thread_start::haa68127701babb00 [INFO] [stdout] at /rustc/0d13f6afeba4935499abe0c9a07426c94492c94e/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7f57d2bdd609 - start_thread [INFO] [stdout] 42: 0x7f57d29ad163 - 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 0.01s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin rust-workshop-0' [INFO] running `Command { std: "docker" "inspect" "06a285ea9698b41f40368adff4fbfbb528f031f0f4f2c80029b2a66d2750b1d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06a285ea9698b41f40368adff4fbfbb528f031f0f4f2c80029b2a66d2750b1d6", kill_on_drop: false }` [INFO] [stdout] 06a285ea9698b41f40368adff4fbfbb528f031f0f4f2c80029b2a66d2750b1d6