[INFO] updating cached repository https://github.com/fuzzyqu/tf_idf_rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 65d4230be1c3289906d4e8bbcaf25d1f2ec7f96f
[INFO] checking fuzzyqu/tf_idf_rs against master#2da942f32802c8233a09744024dfbc34431adf65 for pr-66963
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuzzyqu%2Ftf_idf_rs" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fuzzyqu/tf_idf_rs on toolchain 2da942f32802c8233a09744024dfbc34431adf65
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fuzzyqu/tf_idf_rs
[INFO] finished tweaking git repo https://github.com/fuzzyqu/tf_idf_rs
[INFO] tweaked toml for git repo https://github.com/fuzzyqu/tf_idf_rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/fuzzyqu/tf_idf_rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+2da942f32802c8233a09744024dfbc34431adf65" "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] 08bf6d6fd914077cb0bd5f47ea7a3e2e2a4130f6c13795f0e9ca318ba1a9caa9
[INFO] running `"docker" "start" "-a" "08bf6d6fd914077cb0bd5f47ea7a3e2e2a4130f6c13795f0e9ca318ba1a9caa9"`
[INFO] [stderr]     Checking tf_idf_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `tokenize`
[INFO] [stderr]   --> src/main.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn tokenize(corpus: &str) -> Vec<&str> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tf`
[INFO] [stderr]   --> src/main.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn tf(term: &str, document: Vec<&str>) -> f64 {
[INFO] [stderr]    |    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `idf`
[INFO] [stderr]   --> src/main.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn idf(term: &str, documents: Vec<Vec<&str>>) -> f64 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tfidf`
[INFO] [stderr]   --> src/main.rs:54:4
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn tfidf(term: &str, document: Vec<&str>, documents: Vec<Vec<&str>>) -> f64 {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tokenize`
[INFO] [stderr]   --> src/main.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn tokenize(corpus: &str) -> Vec<&str> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tf`
[INFO] [stderr]   --> src/main.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn tf(term: &str, document: Vec<&str>) -> f64 {
[INFO] [stderr]    |    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `idf`
[INFO] [stderr]   --> src/main.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn idf(term: &str, documents: Vec<Vec<&str>>) -> f64 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tfidf`
[INFO] [stderr]   --> src/main.rs:54:4
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn tfidf(term: &str, document: Vec<&str>, documents: Vec<Vec<&str>>) -> f64 {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "08bf6d6fd914077cb0bd5f47ea7a3e2e2a4130f6c13795f0e9ca318ba1a9caa9"`
[INFO] running `"docker" "rm" "-f" "08bf6d6fd914077cb0bd5f47ea7a3e2e2a4130f6c13795f0e9ca318ba1a9caa9"`
[INFO] [stdout] 08bf6d6fd914077cb0bd5f47ea7a3e2e2a4130f6c13795f0e9ca318ba1a9caa9