[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#cced03bfd61a304243a34504618ecec86c17063f for pr-157082 [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-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [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-0-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust on toolchain cced03bfd61a304243a34504618ecec86c17063f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rand_os v0.1.1 [INFO] [stderr] Downloaded rand v0.6.4 [INFO] [stderr] Downloaded libc v0.2.48 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] 401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b [INFO] running `Command { std: "docker" "start" "401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking rand_os v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.1 [INFO] [stderr] Checking gengo100 v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.41s [INFO] [stdout] warning: function `tab_to_space` is never used [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `tab_to_space` is never used [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_col` is never used [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 `merge_columns` is never used [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 `heads` is never used [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 `tails` is never used [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 `split_file` is never used [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 `get_column_differences` is never used [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 `sort_by_column` is never used [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 `sort_by_frequency` is never used [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: function `get_col` is never used [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 `merge_columns` is never used [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 `heads` is never used [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 `tails` is never used [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 `split_file` is never used [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 `get_column_differences` is never used [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 `sort_by_column` is never used [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 `sort_by_frequency` is never used [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] running `Command { std: "docker" "inspect" "401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b", kill_on_drop: false }` [INFO] [stdout] 401e3c4b886a26eb22f060c762635df6237ec78726a4692f254ff525b1d53e3b