[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 try#2cbf9c3ff35600794d69a7dc7ab399810a067910 for pr-129249-2
[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-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/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-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/naoppy/Language-processing-100-knocks-by-Rust on toolchain 2cbf9c3ff35600794d69a7dc7ab399810a067910
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "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" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03
[INFO] running `Command { std: "docker" "start" "13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03", 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" "13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03", 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" "13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[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]     Checking rand_os v0.1.1
[INFO] [stderr]     Checking gengo100 v0.1.0 (/opt/rustwide/workdir)
[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<String> {
[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<String> {
[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<String> {
[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<String> {
[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<Vec<String>> {
[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<HashSet<String>> {
[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<Vec<String>> {
[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<Vec<String>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[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<String> {
[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<String> {
[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<String> {
[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<String> {
[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<Vec<String>> {
[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<HashSet<String>> {
[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<Vec<String>> {
[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<Vec<String>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03", kill_on_drop: false }`
[INFO] [stdout] 13948ffba28db10d62a0285c647d65e03db4b78ef71955fbde1cc02f3c2c9b03
