[INFO] fetching crate gbdt 0.1.1...
[INFO] testing gbdt-0.1.1 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate gbdt 0.1.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate gbdt 0.1.1 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gbdt 0.1.1
[INFO] finished tweaking crates.io crate gbdt 0.1.1
[INFO] tweaked toml for crates.io crate gbdt 0.1.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8b6617bda3148d3071855a8b6d91ecbcd06c6f6a84c81ddeaedd84d9580c9c7
[INFO] running `Command { std: "docker" "start" "-a" "b8b6617bda3148d3071855a8b6d91ecbcd06c6f6a84c81ddeaedd84d9580c9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8b6617bda3148d3071855a8b6d91ecbcd06c6f6a84c81ddeaedd84d9580c9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8b6617bda3148d3071855a8b6d91ecbcd06c6f6a84c81ddeaedd84d9580c9c7", kill_on_drop: false }`
[INFO] [stdout] b8b6617bda3148d3071855a8b6d91ecbcd06c6f6a84c81ddeaedd84d9580c9c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd8d072d486831c0c219636d0cc99adf2a20464e63848bbc7570313801cbd960
[INFO] running `Command { std: "docker" "start" "-a" "dd8d072d486831c0c219636d0cc99adf2a20464e63848bbc7570313801cbd960", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling gbdt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1749:75
[INFO] [stdout]      |
[INFO] [stdout] 1749 |     pub fn get_from_xgboost(node: &serde_json::Value) -> Result<Self, Box<Error>> {
[INFO] [stdout]      |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1762:25
[INFO] [stdout]      |
[INFO] [stdout] 1762 |     ) -> Result<(), Box<Error>> {
[INFO] [stdout]      |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1801:34
[INFO] [stdout]      |
[INFO] [stdout] 1801 |                     let err: Box<Error> = From::from("not support extra missing node".to_string());
[INFO] [stdout]      |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1838:26
[INFO] [stdout]      |
[INFO] [stdout] 1838 |             let err: Box<Error> = From::from("children not found".to_string());
[INFO] [stdout]      |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:710:64
[INFO] [stdout]     |
[INFO] [stdout] 710 |     pub fn save_model(&self, filename: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:729:59
[INFO] [stdout]     |
[INFO] [stdout] 729 |     pub fn load_model(filename: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]     |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:749:84
[INFO] [stdout]     |
[INFO] [stdout] 749 |     pub fn from_xgoost_dump(model_file: &str, objective: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:289:84
[INFO] [stdout]     |
[INFO] [stdout] 289 | pub fn load_csv(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:340:84
[INFO] [stdout]     |
[INFO] [stdout] 340 | pub fn load_txt(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:417:80
[INFO] [stdout]     |
[INFO] [stdout] 417 | pub fn load(file_name: &str, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.70s
[INFO] running `Command { std: "docker" "inspect" "dd8d072d486831c0c219636d0cc99adf2a20464e63848bbc7570313801cbd960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8d072d486831c0c219636d0cc99adf2a20464e63848bbc7570313801cbd960", kill_on_drop: false }`
[INFO] [stdout] dd8d072d486831c0c219636d0cc99adf2a20464e63848bbc7570313801cbd960
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a00bb75530d5b565ec3718d264f89f8ba3e97a7da0bf639304602ebb17a797e
[INFO] running `Command { std: "docker" "start" "-a" "6a00bb75530d5b565ec3718d264f89f8ba3e97a7da0bf639304602ebb17a797e", kill_on_drop: false }`
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1749:75
[INFO] [stdout]      |
[INFO] [stdout] 1749 |     pub fn get_from_xgboost(node: &serde_json::Value) -> Result<Self, Box<Error>> {
[INFO] [stdout]      |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1762:25
[INFO] [stdout]      |
[INFO] [stdout] 1762 |     ) -> Result<(), Box<Error>> {
[INFO] [stdout]      |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1801:34
[INFO] [stdout]      |
[INFO] [stdout] 1801 |                     let err: Box<Error> = From::from("not support extra missing node".to_string());
[INFO] [stdout]      |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1838:26
[INFO] [stdout]      |
[INFO] [stdout] 1838 |             let err: Box<Error> = From::from("children not found".to_string());
[INFO] [stdout]      |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:710:64
[INFO] [stdout]     |
[INFO] [stdout] 710 |     pub fn save_model(&self, filename: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:729:59
[INFO] [stdout]     |
[INFO] [stdout] 729 |     pub fn load_model(filename: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]     |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:749:84
[INFO] [stdout]     |
[INFO] [stdout] 749 |     pub fn from_xgoost_dump(model_file: &str, objective: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:289:84
[INFO] [stdout]     |
[INFO] [stdout] 289 | pub fn load_csv(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:340:84
[INFO] [stdout]     |
[INFO] [stdout] 340 | pub fn load_txt(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:417:80
[INFO] [stdout]     |
[INFO] [stdout] 417 | pub fn load(file_name: &str, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gbdt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `PredVec`
[INFO] [stdout]  --> examples/test-batch.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use gbdt::decision_tree::{PredVec, ValueType};
[INFO] [stdout]   |                           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1749:75
[INFO] [stdout]      |
[INFO] [stdout] 1749 |     pub fn get_from_xgboost(node: &serde_json::Value) -> Result<Self, Box<Error>> {
[INFO] [stdout]      |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1762:25
[INFO] [stdout]      |
[INFO] [stdout] 1762 |     ) -> Result<(), Box<Error>> {
[INFO] [stdout]      |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1801:34
[INFO] [stdout]      |
[INFO] [stdout] 1801 |                     let err: Box<Error> = From::from("not support extra missing node".to_string());
[INFO] [stdout]      |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/decision_tree.rs:1838:26
[INFO] [stdout]      |
[INFO] [stdout] 1838 |             let err: Box<Error> = From::from("children not found".to_string());
[INFO] [stdout]      |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:710:64
[INFO] [stdout]     |
[INFO] [stdout] 710 |     pub fn save_model(&self, filename: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:729:59
[INFO] [stdout]     |
[INFO] [stdout] 729 |     pub fn load_model(filename: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]     |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gradient_boost.rs:749:84
[INFO] [stdout]     |
[INFO] [stdout] 749 |     pub fn from_xgoost_dump(model_file: &str, objective: &str) -> Result<Self, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:289:84
[INFO] [stdout]     |
[INFO] [stdout] 289 | pub fn load_csv(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:340:84
[INFO] [stdout]     |
[INFO] [stdout] 340 | pub fn load_txt(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/input.rs:417:80
[INFO] [stdout]     |
[INFO] [stdout] 417 | pub fn load(file_name: &str, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stdout]     |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.70s
[INFO] running `Command { std: "docker" "inspect" "6a00bb75530d5b565ec3718d264f89f8ba3e97a7da0bf639304602ebb17a797e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a00bb75530d5b565ec3718d264f89f8ba3e97a7da0bf639304602ebb17a797e", kill_on_drop: false }`
[INFO] [stdout] 6a00bb75530d5b565ec3718d264f89f8ba3e97a7da0bf639304602ebb17a797e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2954eb1dac4b5a89b6c4a6f0aee75572b4ebfd7816ce7cc2c584bf8417d44d4b
[INFO] running `Command { std: "docker" "start" "-a" "2954eb1dac4b5a89b6c4a6f0aee75572b4ebfd7816ce7cc2c584bf8417d44d4b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1749:75
[INFO] [stderr]      |
[INFO] [stderr] 1749 |     pub fn get_from_xgboost(node: &serde_json::Value) -> Result<Self, Box<Error>> {
[INFO] [stderr]      |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1762:25
[INFO] [stderr]      |
[INFO] [stderr] 1762 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]      |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1801:34
[INFO] [stderr]      |
[INFO] [stderr] 1801 |                     let err: Box<Error> = From::from("not support extra missing node".to_string());
[INFO] [stderr]      |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1838:26
[INFO] [stderr]      |
[INFO] [stderr] 1838 |             let err: Box<Error> = From::from("children not found".to_string());
[INFO] [stderr]      |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gradient_boost.rs:710:64
[INFO] [stderr]     |
[INFO] [stderr] 710 |     pub fn save_model(&self, filename: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gradient_boost.rs:729:59
[INFO] [stderr]     |
[INFO] [stderr] 729 |     pub fn load_model(filename: &str) -> Result<Self, Box<Error>> {
[INFO] [stderr]     |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gradient_boost.rs:749:84
[INFO] [stderr]     |
[INFO] [stderr] 749 |     pub fn from_xgoost_dump(model_file: &str, objective: &str) -> Result<Self, Box<Error>> {
[INFO] [stderr]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/input.rs:289:84
[INFO] [stderr]     |
[INFO] [stderr] 289 | pub fn load_csv(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stderr]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/input.rs:340:84
[INFO] [stderr]     |
[INFO] [stderr] 340 | pub fn load_txt(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stderr]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/input.rs:417:80
[INFO] [stderr]     |
[INFO] [stderr] 417 | pub fn load(file_name: &str, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stderr]     |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1749:75
[INFO] [stderr]      |
[INFO] [stderr] 1749 |     pub fn get_from_xgboost(node: &serde_json::Value) -> Result<Self, Box<Error>> {
[INFO] [stderr]      |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1762:25
[INFO] [stderr]      |
[INFO] [stderr] 1762 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]      |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1801:34
[INFO] [stderr]      |
[INFO] [stderr] 1801 |                     let err: Box<Error> = From::from("not support extra missing node".to_string());
[INFO] [stderr]      |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/decision_tree.rs:1838:26
[INFO] [stderr]      |
[INFO] [stderr] 1838 |             let err: Box<Error> = From::from("children not found".to_string());
[INFO] [stderr]      |                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gradient_boost.rs:710:64
[INFO] [stderr]     |
[INFO] [stderr] 710 |     pub fn save_model(&self, filename: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gradient_boost.rs:729:59
[INFO] [stderr]     |
[INFO] [stderr] 729 |     pub fn load_model(filename: &str) -> Result<Self, Box<Error>> {
[INFO] [stderr]     |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gradient_boost.rs:749:84
[INFO] [stderr]     |
[INFO] [stderr] 749 |     pub fn from_xgoost_dump(model_file: &str, objective: &str) -> Result<Self, Box<Error>> {
[INFO] [stderr]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/input.rs:289:84
[INFO] [stderr]     |
[INFO] [stderr] 289 | pub fn load_csv(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stderr]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/input.rs:340:84
[INFO] [stderr]     |
[INFO] [stderr] 340 | pub fn load_txt(file: &mut File, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stderr]     |                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/input.rs:417:80
[INFO] [stderr]     |
[INFO] [stderr] 417 | pub fn load(file_name: &str, input_format: InputFormat) -> Result<DataVec, Box<Error>> {
[INFO] [stderr]     |                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PredVec`
[INFO] [stderr]  --> examples/test-batch.rs:3:27
[INFO] [stderr]   |
[INFO] [stderr] 3 | use gbdt::decision_tree::{PredVec, ValueType};
[INFO] [stderr]   |                           ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gbdt-1d5cd2007a6544d6)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::build_decision_tree ... ok
[INFO] [stdout] test tests::config_express ... ok
[INFO] [stdout] test tests::fitness ... ok
[INFO] [stdout] test tests::loss_type ... ok
[INFO] [stdout] test tests::walk_tree ... ok
[INFO] [stdout] test tests::decision_tree ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gbdt
[INFO] [stdout] 
[INFO] [stdout] running 73 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type rlib --crate-type staticlib --crate-name gbdt --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-de9cbe0cb77e19a3.rlib --extern gbdt=/opt/rustwide/target/debug/deps/libgbdt-76e5c3db39f3188a.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-0a6657775f026cf7.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-14edb7dff9ca13a5.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-f88747e9552afb9f.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-444e26e924f3678d.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-a9383baa23e03ec4.rlib --extern time=/opt/rustwide/target/debug/deps/libtime-8e045214eaabb3d0.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="enable_training"' --cfg 'feature="input"' --cfg 'feature="regex"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "2954eb1dac4b5a89b6c4a6f0aee75572b4ebfd7816ce7cc2c584bf8417d44d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2954eb1dac4b5a89b6c4a6f0aee75572b4ebfd7816ce7cc2c584bf8417d44d4b", kill_on_drop: false }`
[INFO] [stdout] 2954eb1dac4b5a89b6c4a6f0aee75572b4ebfd7816ce7cc2c584bf8417d44d4b