[INFO] fetching crate changeforest 1.1.1...
[INFO] checking changeforest-1.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate changeforest 1.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate changeforest 1.1.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate changeforest 1.1.1
[INFO] finished tweaking crates.io crate changeforest 1.1.1
[INFO] tweaked toml for crates.io crate changeforest 1.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 63 packages
[INFO] [stderr]       Adding approx v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded relative-path v1.9.2
[INFO] [stderr]   Downloaded rstest v0.18.2
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded ndarray-csv v0.5.2
[INFO] [stderr]   Downloaded approx v0.4.0
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded biosphere v0.3.0
[INFO] [stderr]   Downloaded rstest_macros v0.18.2
[INFO] [stderr]   Downloaded ndarray v0.15.6
[INFO] [stderr]   Downloaded ndarray-rand v0.14.0
[INFO] [stderr]   Downloaded futures-timer v3.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2c2f2b85516f2228fa32e2ee73b69d87628df13adb0dc27fbfd934871bde93d
[INFO] running `Command { std: "docker" "start" "-a" "b2c2f2b85516f2228fa32e2ee73b69d87628df13adb0dc27fbfd934871bde93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2c2f2b85516f2228fa32e2ee73b69d87628df13adb0dc27fbfd934871bde93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c2f2b85516f2228fa32e2ee73b69d87628df13adb0dc27fbfd934871bde93d", kill_on_drop: false }`
[INFO] [stdout] b2c2f2b85516f2228fa32e2ee73b69d87628df13adb0dc27fbfd934871bde93d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 887ab6fd3e9f297bc6ce139fd4bca97aeae3ad55bb21ace2be7f1cd3601b5f88
[INFO] running `Command { std: "docker" "start" "-a" "887ab6fd3e9f297bc6ce139fd4bca97aeae3ad55bb21ace2be7f1cd3601b5f88", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling relative-path v1.9.2
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking futures-timer v3.0.3
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking biosphere v0.3.0
[INFO] [stderr]     Checking ndarray-csv v0.5.2
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking changeforest v1.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ndarray` is imported redundantly
[INFO] [stdout]  --> src/wrapper.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ndarray;
[INFO] [stdout]   |     ^^^^^^^ the item `ndarray` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking rstest v0.18.2
[INFO] [stdout] warning: the item `Segmentation` is imported redundantly
[INFO] [stdout]    --> src/binary_segmentation.rs:140:31
[INFO] [stdout]     |
[INFO] [stdout] 138 |     use super::*;
[INFO] [stdout]     |         -------- the item `Segmentation` is already imported here
[INFO] [stdout] 139 |     use crate::optimizer::GridSearch;
[INFO] [stdout] 140 |     use crate::segmentation::{Segmentation, SegmentationType};
[INFO] [stdout]     |                               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Control` is imported redundantly
[INFO] [stdout]   --> src/classifier/random_forest.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     use super::*;
[INFO] [stdout]    |         -------- the item `Control` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 62 |     use crate::Control;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ndarray` is imported redundantly
[INFO] [stdout]  --> src/wrapper.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ndarray;
[INFO] [stdout]   |     ^^^^^^^ the item `ndarray` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.87s
[INFO] running `Command { std: "docker" "inspect" "887ab6fd3e9f297bc6ce139fd4bca97aeae3ad55bb21ace2be7f1cd3601b5f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887ab6fd3e9f297bc6ce139fd4bca97aeae3ad55bb21ace2be7f1cd3601b5f88", kill_on_drop: false }`
[INFO] [stdout] 887ab6fd3e9f297bc6ce139fd4bca97aeae3ad55bb21ace2be7f1cd3601b5f88