[INFO] cloning repository https://github.com/naoppy/Language-processing-100-knocks-by-Rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/naoppy/Language-processing-100-knocks-by-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaoppy%2FLanguage-processing-100-knocks-by-Rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaoppy%2FLanguage-processing-100-knocks-by-Rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d124c0ec942ac01231dfce01eec322922e6f304b [INFO] checking naoppy/Language-processing-100-knocks-by-Rust against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaoppy%2FLanguage-processing-100-knocks-by-Rust" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust [INFO] finished tweaking git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust [INFO] tweaked toml for git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3385c0ac804a093c2b30f30f148cf5b1ccd6db0246e1926d53b0e3da2815c836 [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" "3385c0ac804a093c2b30f30f148cf5b1ccd6db0246e1926d53b0e3da2815c836", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3385c0ac804a093c2b30f30f148cf5b1ccd6db0246e1926d53b0e3da2815c836", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3385c0ac804a093c2b30f30f148cf5b1ccd6db0246e1926d53b0e3da2815c836", kill_on_drop: false }` [INFO] [stdout] 3385c0ac804a093c2b30f30f148cf5b1ccd6db0246e1926d53b0e3da2815c836 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 02e1432f534e946a3de49bdd3b99cad41c0cff6f4278577fa30fcd67b3fca677 [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" "02e1432f534e946a3de49bdd3b99cad41c0cff6f4278577fa30fcd67b3fca677", kill_on_drop: false }` [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling rand v0.6.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_os v0.1.1 [INFO] [stderr] Checking rand_chacha v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rand_pcg v0.1.1 [INFO] [stderr] Checking gengo100 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `tab_to_space` [INFO] [stdout] --> src/chap2/main.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn tab_to_space(path: &Path, tab_width: usize) -> io::Result { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `get_col` [INFO] [stdout] --> src/chap2/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn get_col(source: &Path, out: &Path, column_number: usize) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `merge_columns` [INFO] [stdout] --> src/chap2/main.rs:57:4 [INFO] [stdout] | [INFO] [stdout] 57 | fn merge_columns(source1: &Path, source2: &Path) -> io::Result { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `heads` [INFO] [stdout] --> src/chap2/main.rs:69:4 [INFO] [stdout] | [INFO] [stdout] 69 | fn heads(path: &Path, n: usize) -> io::Result { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `tails` [INFO] [stdout] --> src/chap2/main.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn tails(path: &Path, n: usize) -> io::Result { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `split_file` [INFO] [stdout] --> src/chap2/main.rs:87:4 [INFO] [stdout] | [INFO] [stdout] 87 | fn split_file(path: &Path, n: usize) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `get_column_differences` [INFO] [stdout] --> src/chap2/main.rs:96:4 [INFO] [stdout] | [INFO] [stdout] 96 | fn get_column_differences(path: &Path, n: usize) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sort_by_column` [INFO] [stdout] --> src/chap2/main.rs:114:4 [INFO] [stdout] | [INFO] [stdout] 114 | fn sort_by_column(path: &Path, n: usize) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sort_by_frequency` [INFO] [stdout] --> src/chap2/main.rs:126:4 [INFO] [stdout] | [INFO] [stdout] 126 | fn sort_by_frequency(path: &Path) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `tab_to_space` [INFO] [stdout] --> src/chap2/main.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn tab_to_space(path: &Path, tab_width: usize) -> io::Result { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `get_col` [INFO] [stdout] --> src/chap2/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn get_col(source: &Path, out: &Path, column_number: usize) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `merge_columns` [INFO] [stdout] --> src/chap2/main.rs:57:4 [INFO] [stdout] | [INFO] [stdout] 57 | fn merge_columns(source1: &Path, source2: &Path) -> io::Result { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `heads` [INFO] [stdout] --> src/chap2/main.rs:69:4 [INFO] [stdout] | [INFO] [stdout] 69 | fn heads(path: &Path, n: usize) -> io::Result { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `tails` [INFO] [stdout] --> src/chap2/main.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn tails(path: &Path, n: usize) -> io::Result { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `split_file` [INFO] [stdout] --> src/chap2/main.rs:87:4 [INFO] [stdout] | [INFO] [stdout] 87 | fn split_file(path: &Path, n: usize) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `get_column_differences` [INFO] [stdout] --> src/chap2/main.rs:96:4 [INFO] [stdout] | [INFO] [stdout] 96 | fn get_column_differences(path: &Path, n: usize) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sort_by_column` [INFO] [stdout] --> src/chap2/main.rs:114:4 [INFO] [stdout] | [INFO] [stdout] 114 | fn sort_by_column(path: &Path, n: usize) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sort_by_frequency` [INFO] [stdout] --> src/chap2/main.rs:126:4 [INFO] [stdout] | [INFO] [stdout] 126 | fn sort_by_frequency(path: &Path) -> io::Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.30s [INFO] running `Command { std: "docker" "inspect" "02e1432f534e946a3de49bdd3b99cad41c0cff6f4278577fa30fcd67b3fca677", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "02e1432f534e946a3de49bdd3b99cad41c0cff6f4278577fa30fcd67b3fca677", kill_on_drop: false }` [INFO] [stdout] 02e1432f534e946a3de49bdd3b99cad41c0cff6f4278577fa30fcd67b3fca677