[INFO] fetching crate tangram_core 0.7.0...
[INFO] building tangram_core-0.7.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate tangram_core 0.7.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate tangram_core 0.7.0
[INFO] finished tweaking crates.io crate tangram_core 0.7.0
[INFO] tweaked toml for crates.io crate tangram_core 0.7.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tangram_core 0.7.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 119 packages to latest compatible versions
[INFO] [stderr]       Adding bitvec v0.19.6 (available: v1.0.1)
[INFO] [stderr]       Adding buffalo v0.1.0 (available: v0.4.1)
[INFO] [stderr]       Adding getrandom v0.2.16 (available: v0.3.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.11.4)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.16.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_xoshiro v0.6.0 (available: v0.7.0)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded buffalo v0.1.0
[INFO] [stderr]   Downloaded tangram_progress_counter v0.7.0
[INFO] [stderr]   Downloaded tangram_table v0.7.0
[INFO] [stderr]   Downloaded tangram_finite v0.7.0
[INFO] [stderr]   Downloaded tangram_metrics v0.7.0
[INFO] [stderr]   Downloaded tangram_kill_chip v0.7.0
[INFO] [stderr]   Downloaded tangram_zip v0.7.0
[INFO] [stderr]   Downloaded tangram_text v0.7.0
[INFO] [stderr]   Downloaded tangram_tree v0.7.0
[INFO] [stderr]   Downloaded tangram_id v0.7.0
[INFO] [stderr]   Downloaded tangram_model v0.7.0
[INFO] [stderr]   Downloaded derive_deref v1.1.1
[INFO] [stderr]   Downloaded tangram_features v0.7.0
[INFO] [stderr]   Downloaded tangram_linear v0.7.0
[INFO] [stderr]   Downloaded buffalo_macro v0.1.0
[INFO] [stderr]   Downloaded fast-float v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 734f819887b9900107fe873441ab236b9a0c926e059a177f074db9017d109db6
[INFO] running `Command { std: "docker" "start" "-a" "734f819887b9900107fe873441ab236b9a0c926e059a177f074db9017d109db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "734f819887b9900107fe873441ab236b9a0c926e059a177f074db9017d109db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "734f819887b9900107fe873441ab236b9a0c926e059a177f074db9017d109db6", kill_on_drop: false }`
[INFO] [stdout] 734f819887b9900107fe873441ab236b9a0c926e059a177f074db9017d109db6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fcf143e3eb9bad3b53f2a727dacfa3bcdaa0a13e9930a7a300faa777854de7a
[INFO] running `Command { std: "docker" "start" "-a" "0fcf143e3eb9bad3b53f2a727dacfa3bcdaa0a13e9930a7a300faa777854de7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling tangram_zip v0.7.0
[INFO] [stderr]    Compiling os_str_bytes v6.6.1
[INFO] [stderr]    Compiling tangram_progress_counter v0.7.0
[INFO] [stderr]    Compiling fast-float v0.2.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling derive_deref v1.1.1
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling tangram_kill_chip v0.7.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling bitvec v0.19.6
[INFO] [stderr]    Compiling buffalo_macro v0.1.0
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tangram_metrics v0.7.0
[INFO] [stderr]    Compiling buffalo v0.1.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling csv v1.3.1
[INFO] [stderr]    Compiling tangram_finite v0.7.0
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling tangram_id v0.7.0
[INFO] [stderr]    Compiling tangram_text v0.7.0
[INFO] [stderr]    Compiling clap v3.2.25
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling tangram_table v0.7.0
[INFO] [stderr]    Compiling tangram_features v0.7.0
[INFO] [stderr]    Compiling tangram_tree v0.7.0
[INFO] [stderr]    Compiling tangram_linear v0.7.0
[INFO] [stderr]    Compiling tangram_model v0.7.0
[INFO] [stderr]    Compiling tangram_core v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:719:10
[INFO] [stdout]     |
[INFO] [stdout] 719 |                 for (mut output, features, feature_contributions) in zip!(
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:760:10
[INFO] [stdout]     |
[INFO] [stdout] 760 |                 for (mut output, features, feature_contributions) in zip!(
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:825:10
[INFO] [stdout]     |
[INFO] [stdout] 825 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:872:10
[INFO] [stdout]     |
[INFO] [stdout] 872 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:939:10
[INFO] [stdout]     |
[INFO] [stdout] 939 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:995:10
[INFO] [stdout]     |
[INFO] [stdout] 995 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `binned_features_layout` is never read
[INFO] [stdout]   --> grid.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct TreeModelTrainOptions {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] 66 |     pub binned_features_layout: Option<BinnedFeaturesLayout>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TreeModelTrainOptions` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TextColumnStatsSettings` is never constructed
[INFO] [stdout]   --> stats.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct TextColumnStatsSettings {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TokenEntry` is never constructed
[INFO] [stdout]    --> stats.rs:493:8
[INFO] [stdout]     |
[INFO] [stdout] 493 | struct TokenEntry(pub NGram, pub usize);
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> train.rs:570:11
[INFO] [stdout]     |
[INFO] [stdout] 570 |     fn split(&self) -> (TableView, TableView, TableView) {
[INFO] [stdout]     |              ^^^^^      ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |              |          |          |
[INFO] [stdout]     |              |          |          the same lifetime is hidden here
[INFO] [stdout]     |              |          the same lifetime is hidden here
[INFO] [stdout]     |              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 570 |     fn split(&self) -> (TableView<'_>, TableView<'_>, TableView<'_>) {
[INFO] [stdout]     |                                  ++++           ++++           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.46s
[INFO] running `Command { std: "docker" "inspect" "0fcf143e3eb9bad3b53f2a727dacfa3bcdaa0a13e9930a7a300faa777854de7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fcf143e3eb9bad3b53f2a727dacfa3bcdaa0a13e9930a7a300faa777854de7a", kill_on_drop: false }`
[INFO] [stdout] 0fcf143e3eb9bad3b53f2a727dacfa3bcdaa0a13e9930a7a300faa777854de7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f43b75790ccb89909cd33ccaf32c158fea0eafcdb58b33796886b6501e4a0294
[INFO] running `Command { std: "docker" "start" "-a" "f43b75790ccb89909cd33ccaf32c158fea0eafcdb58b33796886b6501e4a0294", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:719:10
[INFO] [stdout]     |
[INFO] [stdout] 719 |                 for (mut output, features, feature_contributions) in zip!(
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:760:10
[INFO] [stdout]     |
[INFO] [stdout] 760 |                 for (mut output, features, feature_contributions) in zip!(
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:825:10
[INFO] [stdout]     |
[INFO] [stdout] 825 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:872:10
[INFO] [stdout]     |
[INFO] [stdout] 872 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:939:10
[INFO] [stdout]     |
[INFO] [stdout] 939 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:995:10
[INFO] [stdout]     |
[INFO] [stdout] 995 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `binned_features_layout` is never read
[INFO] [stdout]   --> grid.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct TreeModelTrainOptions {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] 66 |     pub binned_features_layout: Option<BinnedFeaturesLayout>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TreeModelTrainOptions` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TextColumnStatsSettings` is never constructed
[INFO] [stdout]   --> stats.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct TextColumnStatsSettings {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tangram_core v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `TokenEntry` is never constructed
[INFO] [stdout]    --> stats.rs:493:8
[INFO] [stdout]     |
[INFO] [stdout] 493 | struct TokenEntry(pub NGram, pub usize);
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> train.rs:570:11
[INFO] [stdout]     |
[INFO] [stdout] 570 |     fn split(&self) -> (TableView, TableView, TableView) {
[INFO] [stdout]     |              ^^^^^      ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |              |          |          |
[INFO] [stdout]     |              |          |          the same lifetime is hidden here
[INFO] [stdout]     |              |          the same lifetime is hidden here
[INFO] [stdout]     |              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 570 |     fn split(&self) -> (TableView<'_>, TableView<'_>, TableView<'_>) {
[INFO] [stdout]     |                                  ++++           ++++           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:719:10
[INFO] [stdout]     |
[INFO] [stdout] 719 |                 for (mut output, features, feature_contributions) in zip!(
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:760:10
[INFO] [stdout]     |
[INFO] [stdout] 760 |                 for (mut output, features, feature_contributions) in zip!(
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:825:10
[INFO] [stdout]     |
[INFO] [stdout] 825 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:872:10
[INFO] [stdout]     |
[INFO] [stdout] 872 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:939:10
[INFO] [stdout]     |
[INFO] [stdout] 939 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> predict.rs:995:10
[INFO] [stdout]     |
[INFO] [stdout] 995 |                 for (mut output, feature_contributions) in
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `binned_features_layout` is never read
[INFO] [stdout]   --> grid.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub struct TreeModelTrainOptions {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] 66 |     pub binned_features_layout: Option<BinnedFeaturesLayout>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TreeModelTrainOptions` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TextColumnStatsSettings` is never constructed
[INFO] [stdout]   --> stats.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct TextColumnStatsSettings {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TokenEntry` is never constructed
[INFO] [stdout]    --> stats.rs:493:8
[INFO] [stdout]     |
[INFO] [stdout] 493 | struct TokenEntry(pub NGram, pub usize);
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> train.rs:570:11
[INFO] [stdout]     |
[INFO] [stdout] 570 |     fn split(&self) -> (TableView, TableView, TableView) {
[INFO] [stdout]     |              ^^^^^      ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |              |          |          |
[INFO] [stdout]     |              |          |          the same lifetime is hidden here
[INFO] [stdout]     |              |          the same lifetime is hidden here
[INFO] [stdout]     |              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 570 |     fn split(&self) -> (TableView<'_>, TableView<'_>, TableView<'_>) {
[INFO] [stdout]     |                                  ++++           ++++           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "f43b75790ccb89909cd33ccaf32c158fea0eafcdb58b33796886b6501e4a0294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f43b75790ccb89909cd33ccaf32c158fea0eafcdb58b33796886b6501e4a0294", kill_on_drop: false }`
[INFO] [stdout] f43b75790ccb89909cd33ccaf32c158fea0eafcdb58b33796886b6501e4a0294
