[INFO] fetching crate forester 0.0.3...
[INFO] checking forester-0.0.3 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate forester 0.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate forester 0.0.3 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate forester 0.0.3
[INFO] finished tweaking crates.io crate forester 0.0.3
[INFO] tweaked toml for crates.io crate forester 0.0.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0c3326409e3f1abb58250c291426c4eaedaa88afadf758d3169d77f1711ca4a
[INFO] running `Command { std: "docker" "start" "-a" "e0c3326409e3f1abb58250c291426c4eaedaa88afadf758d3169d77f1711ca4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0c3326409e3f1abb58250c291426c4eaedaa88afadf758d3169d77f1711ca4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0c3326409e3f1abb58250c291426c4eaedaa88afadf758d3169d77f1711ca4a", kill_on_drop: false }`
[INFO] [stdout] e0c3326409e3f1abb58250c291426c4eaedaa88afadf758d3169d77f1711ca4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 829f03c2956761ff13ff19d21309057dec470afce516632e79839e1fb66f19c7
[INFO] running `Command { std: "docker" "start" "-a" "829f03c2956761ff13ff19d21309057dec470afce516632e79839e1fb66f19c7", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking forester v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/data.rs:56:48
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn all_split_features(&self) -> Option<Box<Iterator<Item=Sample::ThetaSplit>>> { None }
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn all_split_features(&self) -> Option<Box<dyn Iterator<Item=Sample::ThetaSplit>>> { None }
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/testdata.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn all_split_features(&self) -> Option<Box<Iterator<Item=usize>>> {
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn all_split_features(&self) -> Option<Box<dyn Iterator<Item=usize>>> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BestRandomSplit` is imported redundantly
[INFO] [stdout]    --> src/split.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |     use super::*;
[INFO] [stdout]     |         -------- the item `BestRandomSplit` is already imported here
[INFO] [stdout] 255 |     use split::BestRandomSplit;
[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/data.rs:56:48
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn all_split_features(&self) -> Option<Box<Iterator<Item=Sample::ThetaSplit>>> { None }
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn all_split_features(&self) -> Option<Box<dyn Iterator<Item=Sample::ThetaSplit>>> { None }
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/testdata.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn all_split_features(&self) -> Option<Box<Iterator<Item=usize>>> {
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn all_split_features(&self) -> Option<Box<dyn Iterator<Item=usize>>> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `criterion`
[INFO] [stdout]  --> benches/benchmark.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate criterion;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `criterion`
[INFO] [stdout]  --> benches/partition.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate criterion;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `criterion`
[INFO] [stdout]  --> benches/treepredict.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate criterion;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::d_tree`
[INFO] [stdout]  --> benches/treepredict.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | use forester::d_tree::{DeterministicTree, Node};
[INFO] [stdout]   |               ^^^^^^ could not find `d_tree` in `forester`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::splitters`
[INFO] [stdout]   --> benches/treepredict.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | use forester::splitters::ThresholdSplitter;
[INFO] [stdout]    |               ^^^^^^^^^ could not find `splitters` in `forester`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::predictors`
[INFO] [stdout]   --> benches/treepredict.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | use forester::predictors::ConstMean;
[INFO] [stdout]    |               ^^^^^^^^^^ could not find `predictors` in `forester`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::features`
[INFO] [stdout]   --> benches/treepredict.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 | use forester::features::ColumnSelect;
[INFO] [stdout]    |               ^^^^^^^^ could not find `features` in `forester`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::datasets`
[INFO] [stdout]   --> benches/treepredict.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 | use forester::datasets::TupleSample;
[INFO] [stdout]    |               ^^^^^^^^ could not find `datasets` in `forester`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::LearnerMut`
[INFO] [stdout]   --> benches/benchmark.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use forester::LearnerMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ no `LearnerMut` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `criterion_main` in this scope
[INFO] [stdout]   --> benches/benchmark.rs:90:1
[INFO] [stdout]    |
[INFO] [stdout] 90 | criterion_main!(benches);
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `criterion_group` in this scope
[INFO] [stdout]   --> benches/benchmark.rs:89:1
[INFO] [stdout]    |
[INFO] [stdout] 89 | criterion_group!(benches, array_data, ref_data, vec_data);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> benches/benchmark.rs:35:34
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn gen_data_array() -> Vec<Sample<[f64; M], f64>> {
[INFO] [stdout]    |                                  ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`, or if you will only have owned values
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn gen_data_array() -> Vec<Sample<'static, [f64; M], f64>> {
[INFO] [stdout]    |                                   ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> benches/benchmark.rs:48:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn gen_data_vec() -> Vec<Sample<Vec<f64>, f64>> {
[INFO] [stdout]    |                                ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`, or if you will only have owned values
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn gen_data_vec() -> Vec<Sample<'static, Vec<f64>, f64>> {
[INFO] [stdout]    |                                 ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> benches/benchmark.rs:58:32
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_data_ref() -> Vec<Sample<&'static [f64], f64>> {
[INFO] [stdout]    |                                ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`, or if you will only have owned values
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_data_ref() -> Vec<Sample<'static, &'static [f64], f64>> {
[INFO] [stdout]    |                                 ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `criterion_main` in this scope
[INFO] [stdout]   --> benches/partition.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | criterion_main!(benches);
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `forester::traits`
[INFO] [stdout]   --> benches/treepredict.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use forester::traits::Side;
[INFO] [stdout]    |               ^^^^^^ could not find `traits` in `forester`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `criterion_group` in this scope
[INFO] [stdout]   --> benches/partition.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | criterion_group!(benches, bench_partition);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `forester::DeterministicSplitter`, `forester::LeafPredictor`, `forester::Predictor`
[INFO] [stdout]   --> benches/treepredict.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | use forester::{DeterministicSplitter, LeafPredictor, Predictor as PT};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^ no `Predictor` in the root
[INFO] [stdout]    |                |                      |
[INFO] [stdout]    |                |                      no `LeafPredictor` in the root
[INFO] [stdout]    |                no `DeterministicSplitter` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `criterion_group` in this scope
[INFO] [stdout]   --> benches/treepredict.rs:87:1
[INFO] [stdout]    |
[INFO] [stdout] 87 | criterion_group!(benches, bench_partition);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `criterion_main` in this scope
[INFO] [stdout]   --> benches/treepredict.rs:88:1
[INFO] [stdout]    |
[INFO] [stdout] 88 | criterion_main!(benches);
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/benchmark.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 |         data.push(Sample::new(x, y))
[INFO] [stdout]    |                   ----------- ^ expected `&[_]`, found `[f64; 30]`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&[_]`
[INFO] [stdout]                   found array `[f64; 30]`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> /opt/rustwide/workdir/src/api.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |         pub fn new(x: &'a[X], y: Y) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] help: consider borrowing here
[INFO] [stdout]    |
[INFO] [stdout] 43 |         data.push(Sample::new(&x, y))
[INFO] [stdout]    |                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/benchmark.rs:53:31
[INFO] [stdout]    |
[INFO] [stdout] 53 |         data.push(Sample::new(x, y))
[INFO] [stdout]    |                   ----------- ^ expected `&[_]`, found `Vec<f64>`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&[_]`
[INFO] [stdout]                  found struct `Vec<f64>`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> /opt/rustwide/workdir/src/api.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |         pub fn new(x: &'a[X], y: Y) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] help: consider borrowing here
[INFO] [stdout]    |
[INFO] [stdout] 53 |         data.push(Sample::new(&x, y))
[INFO] [stdout]    |                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `forester` (bench "partition") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/benchmark.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gen_data_ref() -> Vec<Sample<&'static [f64], f64>> {
[INFO] [stdout]    |                      -------------------------------- expected `Vec<forester::api::extra_trees_regressor::Sample<'static, &'static [f64], f64>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 62 |         data.push(Sample::new(x, y))
[INFO] [stdout]    |         ----      ----------------- this argument has type `forester::api::extra_trees_regressor::Sample<'_, f64, f64>`...
[INFO] [stdout]    |         |
[INFO] [stdout]    |         ... which causes `data` to have type `Vec<forester::api::extra_trees_regressor::Sample<'_, f64, f64>>`
[INFO] [stdout] 63 |     }
[INFO] [stdout] 64 |     data
[INFO] [stdout]    |     ^^^^ expected `Vec<Sample<'_, &[f64], f64>>`, found `Vec<Sample<'_, f64, f64>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<forester::api::extra_trees_regressor::Sample<'static, &'static [f64], _>>`
[INFO] [stdout]               found struct `Vec<forester::api::extra_trees_regressor::Sample<'_, f64, _>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TreeBuilder`
[INFO] [stdout]   --> benches/benchmark.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let model = TreeBuilder::default().fit(&mut data);
[INFO] [stdout]    |                     ^^^^^^^^^^^ use of undeclared type `TreeBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TreeBuilder`
[INFO] [stdout]   --> benches/benchmark.rs:78:21
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let model = TreeBuilder::default().fit(&mut data);
[INFO] [stdout]    |                     ^^^^^^^^^^^ use of undeclared type `TreeBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TreeBuilder`
[INFO] [stdout]   --> benches/benchmark.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let model = TreeBuilder::default().fit(&mut data);
[INFO] [stdout]    |                     ^^^^^^^^^^^ use of undeclared type `TreeBuilder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/benchmark.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         for i in 0..N*M {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0308, E0432, E0433, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `forester` (bench "treepredict") due to 11 previous errors
[INFO] [stderr] error: could not compile `forester` (bench "benchmark") due to 14 previous errors; 1 warning emitted
[INFO] [stdout] warning: unused `Chunks` that must be used
[INFO] [stdout]    --> src/vec2d.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         x.iter();
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let _ = x.iter();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "829f03c2956761ff13ff19d21309057dec470afce516632e79839e1fb66f19c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "829f03c2956761ff13ff19d21309057dec470afce516632e79839e1fb66f19c7", kill_on_drop: false }`
[INFO] [stdout] 829f03c2956761ff13ff19d21309057dec470afce516632e79839e1fb66f19c7
