[INFO] cloning repository https://github.com/Shuternay/factorization_machine
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shuternay/factorization_machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShuternay%2Ffactorization_machine"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShuternay%2Ffactorization_machine'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f935feb6948591d30df2136b16576348f5c69c9b
[INFO] testing Shuternay/factorization_machine against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShuternay%2Ffactorization_machine" "/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/Shuternay/factorization_machine 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/Shuternay/factorization_machine
[INFO] finished tweaking git repo https://github.com/Shuternay/factorization_machine
[INFO] tweaked toml for git repo https://github.com/Shuternay/factorization_machine written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Shuternay/factorization_machine 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] [stderr]     Blocking waiting for file lock on package cache
[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] 5a7d7b94ac136b9cb32c35ddfb174cd0ca81e5eeb1bd799b450163fa03b36d3d
[INFO] running `"docker" "start" "-a" "5a7d7b94ac136b9cb32c35ddfb174cd0ca81e5eeb1bd799b450163fa03b36d3d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling serde_derive_internals v0.23.0
[INFO] [stderr]    Compiling serde_derive v1.0.37
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling csv v1.0.0-beta.5
[INFO] [stderr]    Compiling factorization_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:54:70
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn from_libsvm(path: &str, bits: u32) -> Result<Dataset, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/dataset.rs:92:74
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:92:89
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:36:50
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn load(path: &str) -> Result<Model, Box<Error>> {
[INFO] [stderr]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:44:54
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:103:55
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn eval_loss(&self, dataset: &Dataset, loss: &Loss) -> f32 {
[INFO] [stderr]     |                                                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:110:37
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   loss: &Loss, mut optimizer: T, epochs: i32, l2_regularization: f32) {
[INFO] [stderr]     |                              ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:180:96
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn fit_als(&mut self, dataset: &Dataset, test_dataset_option: &Option<Dataset>, loss: &Loss, 
[INFO] [stderr]     |                                                                                                ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:265:33
[INFO] [stderr]     |
[INFO] [stderr] 265 | ...                   let mut h = record.value * 
[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: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:75:23
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut loss: Box<Loss>;
[INFO] [stderr]    |                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.20s
[INFO] running `"docker" "inspect" "5a7d7b94ac136b9cb32c35ddfb174cd0ca81e5eeb1bd799b450163fa03b36d3d"`
[INFO] running `"docker" "rm" "-f" "5a7d7b94ac136b9cb32c35ddfb174cd0ca81e5eeb1bd799b450163fa03b36d3d"`
[INFO] [stdout] 5a7d7b94ac136b9cb32c35ddfb174cd0ca81e5eeb1bd799b450163fa03b36d3d
[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] 1523a95113c6fe61618f59ca3d1d80167134ba457542e1a39af81093e1a97461
[INFO] running `"docker" "start" "-a" "1523a95113c6fe61618f59ca3d1d80167134ba457542e1a39af81093e1a97461"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling factorization_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:54:70
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn from_libsvm(path: &str, bits: u32) -> Result<Dataset, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/dataset.rs:92:74
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:92:89
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:36:50
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn load(path: &str) -> Result<Model, Box<Error>> {
[INFO] [stderr]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:44:54
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:103:55
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn eval_loss(&self, dataset: &Dataset, loss: &Loss) -> f32 {
[INFO] [stderr]     |                                                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:110:37
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   loss: &Loss, mut optimizer: T, epochs: i32, l2_regularization: f32) {
[INFO] [stderr]     |                              ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:180:96
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn fit_als(&mut self, dataset: &Dataset, test_dataset_option: &Option<Dataset>, loss: &Loss, 
[INFO] [stderr]     |                                                                                                ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:265:33
[INFO] [stderr]     |
[INFO] [stderr] 265 | ...                   let mut h = record.value * 
[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: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:75:23
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut loss: Box<Loss>;
[INFO] [stderr]    |                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:54:70
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn from_libsvm(path: &str, bits: u32) -> Result<Dataset, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/dataset.rs:92:74
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:92:89
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:36:50
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn load(path: &str) -> Result<Model, Box<Error>> {
[INFO] [stderr]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:44:54
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:103:55
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn eval_loss(&self, dataset: &Dataset, loss: &Loss) -> f32 {
[INFO] [stderr]     |                                                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:110:37
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   loss: &Loss, mut optimizer: T, epochs: i32, l2_regularization: f32) {
[INFO] [stderr]     |                              ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:180:96
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn fit_als(&mut self, dataset: &Dataset, test_dataset_option: &Option<Dataset>, loss: &Loss, 
[INFO] [stderr]     |                                                                                                ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:265:33
[INFO] [stderr]     |
[INFO] [stderr] 265 | ...                   let mut h = record.value * 
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "1523a95113c6fe61618f59ca3d1d80167134ba457542e1a39af81093e1a97461"`
[INFO] running `"docker" "rm" "-f" "1523a95113c6fe61618f59ca3d1d80167134ba457542e1a39af81093e1a97461"`
[INFO] [stdout] 1523a95113c6fe61618f59ca3d1d80167134ba457542e1a39af81093e1a97461
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0aec2e6f21c388ab80d5ef340b9ea13719c22225c062ee5ec93f5dd37570a57e
[INFO] running `"docker" "start" "-a" "0aec2e6f21c388ab80d5ef340b9ea13719c22225c062ee5ec93f5dd37570a57e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:54:70
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn from_libsvm(path: &str, bits: u32) -> Result<Dataset, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/dataset.rs:92:74
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:92:89
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:36:50
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn load(path: &str) -> Result<Model, Box<Error>> {
[INFO] [stderr]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:44:54
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:103:55
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn eval_loss(&self, dataset: &Dataset, loss: &Loss) -> f32 {
[INFO] [stderr]     |                                                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:110:37
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   loss: &Loss, mut optimizer: T, epochs: i32, l2_regularization: f32) {
[INFO] [stderr]     |                              ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:180:96
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn fit_als(&mut self, dataset: &Dataset, test_dataset_option: &Option<Dataset>, loss: &Loss, 
[INFO] [stderr]     |                                                                                                ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:265:33
[INFO] [stderr]     |
[INFO] [stderr] 265 | ...                   let mut h = record.value * 
[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: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:54:70
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn from_libsvm(path: &str, bits: u32) -> Result<Dataset, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/dataset.rs:92:74
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/dataset.rs:92:89
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn from_csv(path: &str, target_field: &str, bits: u32) -> Result<(Dataset), Box<Error>> {
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:36:50
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn load(path: &str) -> Result<Model, Box<Error>> {
[INFO] [stderr]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model.rs:44:54
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:103:55
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn eval_loss(&self, dataset: &Dataset, loss: &Loss) -> f32 {
[INFO] [stderr]     |                                                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:110:37
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   loss: &Loss, mut optimizer: T, epochs: i32, l2_regularization: f32) {
[INFO] [stderr]     |                              ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model.rs:180:96
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn fit_als(&mut self, dataset: &Dataset, test_dataset_option: &Option<Dataset>, loss: &Loss, 
[INFO] [stderr]     |                                                                                                ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/model.rs:265:33
[INFO] [stderr]     |
[INFO] [stderr] 265 | ...                   let mut h = record.value * 
[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: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:75:23
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut loss: Box<Loss>;
[INFO] [stderr]    |                       ^^^^ help: use `dyn`: `dyn Loss`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/factorization_machine-dbdd84f3e6bd5875
[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] [stderr]      Running /opt/rustwide/target/debug/deps/factorization_machine-4c2ca98e35b0f30a
[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] [stderr]    Doc-tests factorization_machine
[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" "0aec2e6f21c388ab80d5ef340b9ea13719c22225c062ee5ec93f5dd37570a57e"`
[INFO] running `"docker" "rm" "-f" "0aec2e6f21c388ab80d5ef340b9ea13719c22225c062ee5ec93f5dd37570a57e"`
[INFO] [stdout] 0aec2e6f21c388ab80d5ef340b9ea13719c22225c062ee5ec93f5dd37570a57e