[INFO] cloning repository https://github.com/henryroyal/cli-fractional-knapsack [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/henryroyal/cli-fractional-knapsack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryroyal%2Fcli-fractional-knapsack"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryroyal%2Fcli-fractional-knapsack'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] aad60f6e27baaad53767c4245a6d82b33105d7fd [INFO] checking henryroyal/cli-fractional-knapsack against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryroyal%2Fcli-fractional-knapsack" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/henryroyal/cli-fractional-knapsack on toolchain 45d050cde277b22a755847338f2acc2c7b834141 [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/henryroyal/cli-fractional-knapsack [INFO] finished tweaking git repo https://github.com/henryroyal/cli-fractional-knapsack [INFO] tweaked toml for git repo https://github.com/henryroyal/cli-fractional-knapsack written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/henryroyal/cli-fractional-knapsack already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c2fe29eac05c38496a10f9db53c85ce5af6e029e8a5579cf0ced476789339a4e [INFO] running `"docker" "start" "-a" "c2fe29eac05c38496a10f9db53c85ce5af6e029e8a5579cf0ced476789339a4e"` [INFO] [stderr] Checking fractional_knapsack v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `ix` [INFO] [stderr] --> src/main.rs:67:9 [INFO] [stderr] | [INFO] [stderr] 67 | let mut ix: usize = 0; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ix` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `remaining_weight` [INFO] [stderr] --> src/main.rs:86:13 [INFO] [stderr] | [INFO] [stderr] 86 | let remaining_weight = max_weight - weight; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining_weight` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `remaining_count` [INFO] [stderr] --> src/main.rs:87:13 [INFO] [stderr] | [INFO] [stderr] 87 | let remaining_count = max_count - count; [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining_count` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `other` [INFO] [stderr] --> src/main.rs:29:18 [INFO] [stderr] | [INFO] [stderr] 29 | fn eq(&self, other: &Item) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_other` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:67:9 [INFO] [stderr] | [INFO] [stderr] 67 | let mut ix: usize = 0; [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `DEBUG` should have a snake case name [INFO] [stderr] --> src/main.rs:66:9 [INFO] [stderr] | [INFO] [stderr] 66 | let DEBUG = false; [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `debug` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:123:5 [INFO] [stderr] | [INFO] [stderr] 123 | std::io::stdin().read_line(&mut stdin); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::str::::replace` that must be used [INFO] [stderr] --> src/main.rs:124:5 [INFO] [stderr] | [INFO] [stderr] 124 | stdin.replace("\n", ""); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this returns the replaced string as a new allocation, without modifying the original [INFO] [stderr] [INFO] [stderr] warning: 8 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ix` [INFO] [stderr] --> src/main.rs:67:9 [INFO] [stderr] | [INFO] [stderr] 67 | let mut ix: usize = 0; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ix` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `remaining_weight` [INFO] [stderr] --> src/main.rs:86:13 [INFO] [stderr] | [INFO] [stderr] 86 | let remaining_weight = max_weight - weight; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining_weight` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `remaining_count` [INFO] [stderr] --> src/main.rs:87:13 [INFO] [stderr] | [INFO] [stderr] 87 | let remaining_count = max_count - count; [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining_count` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `other` [INFO] [stderr] --> src/main.rs:29:18 [INFO] [stderr] | [INFO] [stderr] 29 | fn eq(&self, other: &Item) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_other` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:67:9 [INFO] [stderr] | [INFO] [stderr] 67 | let mut ix: usize = 0; [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `DEBUG` should have a snake case name [INFO] [stderr] --> src/main.rs:66:9 [INFO] [stderr] | [INFO] [stderr] 66 | let DEBUG = false; [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `debug` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:123:5 [INFO] [stderr] | [INFO] [stderr] 123 | std::io::stdin().read_line(&mut stdin); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::str::::replace` that must be used [INFO] [stderr] --> src/main.rs:124:5 [INFO] [stderr] | [INFO] [stderr] 124 | stdin.replace("\n", ""); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this returns the replaced string as a new allocation, without modifying the original [INFO] [stderr] [INFO] [stderr] warning: 8 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.68s [INFO] running `"docker" "inspect" "c2fe29eac05c38496a10f9db53c85ce5af6e029e8a5579cf0ced476789339a4e"` [INFO] running `"docker" "rm" "-f" "c2fe29eac05c38496a10f9db53c85ce5af6e029e8a5579cf0ced476789339a4e"` [INFO] [stdout] c2fe29eac05c38496a10f9db53c85ce5af6e029e8a5579cf0ced476789339a4e