[INFO] cloning repository https://github.com/jakyle/rust-algos [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakyle/rust-algos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakyle%2Frust-algos", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakyle%2Frust-algos'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7865320dda33ff4b52d9e4472ecdcffc002023bf [INFO] checking jakyle/rust-algos against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakyle%2Frust-algos" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jakyle/rust-algos on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jakyle/rust-algos [INFO] finished tweaking git repo https://github.com/jakyle/rust-algos [INFO] tweaked toml for git repo https://github.com/jakyle/rust-algos written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/jakyle/rust-algos already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 00a6fc034b32e697e4e332468640e051dda9463026238f823df9451e6b6a56a2 [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" "00a6fc034b32e697e4e332468640e051dda9463026238f823df9451e6b6a56a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "00a6fc034b32e697e4e332468640e051dda9463026238f823df9451e6b6a56a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "00a6fc034b32e697e4e332468640e051dda9463026238f823df9451e6b6a56a2", kill_on_drop: false }` [INFO] [stdout] 00a6fc034b32e697e4e332468640e051dda9463026238f823df9451e6b6a56a2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b8515082cdc416f2d8c65e103ad8f5f88b92f3c13cf2d4ccbc0e09de538fb66c [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" "b8515082cdc416f2d8c65e103ad8f5f88b92f3c13cf2d4ccbc0e09de538fb66c", kill_on_drop: false }` [INFO] [stderr] Checking algos v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `is_braces_balanced` [INFO] [stdout] --> src/balanced_braces.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn is_braces_balanced(braces: &str) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `max_number_of_balloons` [INFO] [stdout] --> src/number_of_baloons.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn max_number_of_balloons(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `two_sum` [INFO] [stdout] --> src/two_sum.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `reverse` [INFO] [stdout] --> src/reverse_integer.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn reverse(x: i32) -> i32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `find_numbers` [INFO] [stdout] --> src/find_numbers_with_even_digits.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn find_numbers(x: Vec) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `find_kth_largest` [INFO] [stdout] --> src/find_kth_largest.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn find_kth_largest(nums: Vec, k: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `top_k_frequent` [INFO] [stdout] --> src/top_k_frequent_elements.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn top_k_frequent(nums: Vec, k: i32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/balanced_braces.rs:44:25 [INFO] [stdout] | [INFO] [stdout] 44 | assert!(result, true); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panic)]` on by default [INFO] [stdout] = note: this is no longer accepted in Rust 2021 [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 44 | assert!(result, "{}", true); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.48s [INFO] running `Command { std: "docker" "inspect" "b8515082cdc416f2d8c65e103ad8f5f88b92f3c13cf2d4ccbc0e09de538fb66c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b8515082cdc416f2d8c65e103ad8f5f88b92f3c13cf2d4ccbc0e09de538fb66c", kill_on_drop: false }` [INFO] [stdout] b8515082cdc416f2d8c65e103ad8f5f88b92f3c13cf2d4ccbc0e09de538fb66c