[INFO] fetching crate linfa-datasets 0.4.0...
[INFO] checking linfa-datasets-0.4.0 against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] extracting crate linfa-datasets 0.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate linfa-datasets 0.4.0 on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linfa-datasets 0.4.0
[INFO] finished tweaking crates.io crate linfa-datasets 0.4.0
[INFO] tweaked toml for crates.io crate linfa-datasets 0.4.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9830275c2c405c130a9dd56fddb582f46fa5bfb4c79e36ad679c6a99e9f7d216
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9830275c2c405c130a9dd56fddb582f46fa5bfb4c79e36ad679c6a99e9f7d216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9830275c2c405c130a9dd56fddb582f46fa5bfb4c79e36ad679c6a99e9f7d216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9830275c2c405c130a9dd56fddb582f46fa5bfb4c79e36ad679c6a99e9f7d216", kill_on_drop: false }`
[INFO] [stdout] 9830275c2c405c130a9dd56fddb582f46fa5bfb4c79e36ad679c6a99e9f7d216
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 705eb78f6cb2cfbeee5d4e7b3f842d6994e72956388c7ae88cfdd8875f1e16d4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "705eb78f6cb2cfbeee5d4e7b3f842d6994e72956388c7ae88cfdd8875f1e16d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking ndarray-csv v0.5.0
[INFO] [stderr]     Checking linfa v0.4.0
[INFO] [stderr]     Checking linfa-datasets v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `csv::ReaderBuilder`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use csv::ReaderBuilder;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `flate2::read::GzDecoder`
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use flate2::read::GzDecoder;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linfa::Dataset`
[INFO] [stdout]   --> src/lib.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | use linfa::Dataset;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use ndarray::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray_csv::Array2Reader`
[INFO] [stdout]   --> src/lib.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use ndarray_csv::Array2Reader;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/lib.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `approx::assert_abs_diff_eq`
[INFO] [stdout]    --> src/lib.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     use approx::assert_abs_diff_eq;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linfa::prelude::*`
[INFO] [stdout]    --> src/lib.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |     use linfa::prelude::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `csv::ReaderBuilder`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use csv::ReaderBuilder;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `flate2::read::GzDecoder`
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use flate2::read::GzDecoder;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linfa::Dataset`
[INFO] [stdout]   --> src/lib.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | use linfa::Dataset;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use ndarray::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray_csv::Array2Reader`
[INFO] [stdout]   --> src/lib.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use ndarray_csv::Array2Reader;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.48s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "705eb78f6cb2cfbeee5d4e7b3f842d6994e72956388c7ae88cfdd8875f1e16d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "705eb78f6cb2cfbeee5d4e7b3f842d6994e72956388c7ae88cfdd8875f1e16d4", kill_on_drop: false }`
[INFO] [stdout] 705eb78f6cb2cfbeee5d4e7b3f842d6994e72956388c7ae88cfdd8875f1e16d4