[INFO] updating cached repository https://github.com/ShadowLightMan/bayes-classifier-in-rust
[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] af9a714350375e1c7698f3fb086d537e671705c9
[INFO] testing ShadowLightMan/bayes-classifier-in-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShadowLightMan%2Fbayes-classifier-in-rust" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShadowLightMan/bayes-classifier-in-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ShadowLightMan/bayes-classifier-in-rust
[INFO] finished tweaking git repo https://github.com/ShadowLightMan/bayes-classifier-in-rust
[INFO] tweaked toml for git repo https://github.com/ShadowLightMan/bayes-classifier-in-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ShadowLightMan/bayes-classifier-in-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f1014e391d25532986ddf096d2a342d0b97c73cba2f5c85ac086676e0cfc6e72
[INFO] running `"docker" "start" "-a" "f1014e391d25532986ddf096d2a342d0b97c73cba2f5c85ac086676e0cfc6e72"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling bstr v0.2.8
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling bayes-classifier-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::hash_map::RandomState`
[INFO] [stderr]  --> src/train.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::collections::hash_map::RandomState;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class_name`
[INFO] [stderr]    --> src/classify.rs:108:10
[INFO] [stderr]     |
[INFO] [stderr] 108 |     for (class_name, reviews_count) in review_count_by_class.iter().enumerate() {
[INFO] [stderr]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_class_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class`
[INFO] [stderr]   --> src/train.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 |     for (class, reviews) in joined_reviews.iter().enumerate() {
[INFO] [stderr]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classify.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut posterior_probability = compute_posterior_probability(&review_count_by_class, overall_reviews_count); // P(c) = |Dc|/|D|
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classify.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut prior_probability = compute_prior_probability(
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classify.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let mut max_value = v.iter().fold(v[0], |mut max, &val| {
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/train.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut classes = read_reviews(content_dir).unwrap();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         train::train(&args[2]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         classify::classify(&args[2], &args[3]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     writer.write_record(&["class", "word", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |             writer.write_record(&[&class_name.to_string(), &word, &occurrences.to_string()]);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     writer.write_record(&["class", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         writer.write_record(&[&class_name.to_string(), &count.to_string()]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     writer.write_record(&["class", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         writer.write_record(&[&class_name.to_string(), &class_reviews.len().to_string()]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 1m 30s
[INFO] running `"docker" "inspect" "f1014e391d25532986ddf096d2a342d0b97c73cba2f5c85ac086676e0cfc6e72"`
[INFO] running `"docker" "rm" "-f" "f1014e391d25532986ddf096d2a342d0b97c73cba2f5c85ac086676e0cfc6e72"`
[INFO] [stdout] f1014e391d25532986ddf096d2a342d0b97c73cba2f5c85ac086676e0cfc6e72
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d130cd261d2792ef54616a06cfb9c039bac523a1c2bf9ce0649d34349cba3716
[INFO] running `"docker" "start" "-a" "d130cd261d2792ef54616a06cfb9c039bac523a1c2bf9ce0649d34349cba3716"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bayes-classifier-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::hash_map::RandomState`
[INFO] [stderr]  --> src/train.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::collections::hash_map::RandomState;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class_name`
[INFO] [stderr]    --> src/classify.rs:108:10
[INFO] [stderr]     |
[INFO] [stderr] 108 |     for (class_name, reviews_count) in review_count_by_class.iter().enumerate() {
[INFO] [stderr]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_class_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class`
[INFO] [stderr]   --> src/train.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 |     for (class, reviews) in joined_reviews.iter().enumerate() {
[INFO] [stderr]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classify.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut posterior_probability = compute_posterior_probability(&review_count_by_class, overall_reviews_count); // P(c) = |Dc|/|D|
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classify.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut prior_probability = compute_prior_probability(
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classify.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let mut max_value = v.iter().fold(v[0], |mut max, &val| {
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/train.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut classes = read_reviews(content_dir).unwrap();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         train::train(&args[2]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         classify::classify(&args[2], &args[3]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     writer.write_record(&["class", "word", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |             writer.write_record(&[&class_name.to_string(), &word, &occurrences.to_string()]);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     writer.write_record(&["class", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         writer.write_record(&[&class_name.to_string(), &count.to_string()]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     writer.write_record(&["class", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         writer.write_record(&[&class_name.to_string(), &class_reviews.len().to_string()]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 1.58s
[INFO] running `"docker" "inspect" "d130cd261d2792ef54616a06cfb9c039bac523a1c2bf9ce0649d34349cba3716"`
[INFO] running `"docker" "rm" "-f" "d130cd261d2792ef54616a06cfb9c039bac523a1c2bf9ce0649d34349cba3716"`
[INFO] [stdout] d130cd261d2792ef54616a06cfb9c039bac523a1c2bf9ce0649d34349cba3716
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] 5be27be233d4d6366714c922e805e4b4499cd6f91a70793428fbd726175b5e18
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "5be27be233d4d6366714c922e805e4b4499cd6f91a70793428fbd726175b5e18"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `std::collections::hash_map::RandomState`
[INFO] [stderr]  --> src/train.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::collections::hash_map::RandomState;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class_name`
[INFO] [stderr]    --> src/classify.rs:108:10
[INFO] [stderr]     |
[INFO] [stderr] 108 |     for (class_name, reviews_count) in review_count_by_class.iter().enumerate() {
[INFO] [stderr]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_class_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class`
[INFO] [stderr]   --> src/train.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 |     for (class, reviews) in joined_reviews.iter().enumerate() {
[INFO] [stderr]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classify.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut posterior_probability = compute_posterior_probability(&review_count_by_class, overall_reviews_count); // P(c) = |Dc|/|D|
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classify.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut prior_probability = compute_prior_probability(
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classify.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let mut max_value = v.iter().fold(v[0], |mut max, &val| {
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/train.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut classes = read_reviews(content_dir).unwrap();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         train::train(&args[2]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         classify::classify(&args[2], &args[3]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     writer.write_record(&["class", "word", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |             writer.write_record(&[&class_name.to_string(), &word, &occurrences.to_string()]);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     writer.write_record(&["class", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         writer.write_record(&[&class_name.to_string(), &count.to_string()]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     writer.write_record(&["class", "count"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/train.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         writer.write_record(&[&class_name.to_string(), &class_reviews.len().to_string()]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bayes_classifier_in_rust-2a536ab8cd452a01
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5be27be233d4d6366714c922e805e4b4499cd6f91a70793428fbd726175b5e18"`
[INFO] running `"docker" "rm" "-f" "5be27be233d4d6366714c922e805e4b4499cd6f91a70793428fbd726175b5e18"`
[INFO] [stdout] 5be27be233d4d6366714c922e805e4b4499cd6f91a70793428fbd726175b5e18