[INFO] fetching crate linfa-reduction 0.7.0...
[INFO] checking linfa-reduction-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate linfa-reduction 0.7.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate linfa-reduction 0.7.0 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 linfa-reduction 0.7.0
[INFO] finished tweaking crates.io crate linfa-reduction 0.7.0
[INFO] tweaked toml for crates.io crate linfa-reduction 0.7.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate linfa-reduction 0.7.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.49
[INFO] [stderr]   Downloaded cblas-sys v0.1.4
[INFO] [stderr]   Downloaded pest_derive v2.7.4
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[INFO] [stderr]   Downloaded cauchy v0.4.0
[INFO] [stderr]   Downloaded ndarray-csv v0.5.1
[INFO] [stderr]   Downloaded linfa-kernel v0.7.0
[INFO] [stderr]   Downloaded linfa-nn v0.7.0
[INFO] [stderr]   Downloaded ndarray-npy v0.8.1
[INFO] [stderr]   Downloaded linfa-datasets v0.7.0
[INFO] [stderr]   Downloaded linfa v0.7.0
[INFO] [stderr]   Downloaded sprs v0.11.1
[INFO] [stderr]   Downloaded pest v2.7.4
[INFO] [stderr]   Downloaded order-stat v0.1.3
[INFO] [stderr]   Downloaded linfa-linalg v0.1.0
[INFO] [stderr]   Downloaded lapack-sys v0.12.1
[INFO] [stderr]   Downloaded lapack v0.18.0
[INFO] [stderr]   Downloaded lax v0.15.0
[INFO] [stderr]   Downloaded ndarray-linalg v0.15.0
[INFO] [stderr]   Downloaded py_literal v0.4.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 373e09cccc41644c93d1bfeb64a434d6891cb0cda6c2bc021efc2febccf21a9c
[INFO] running `Command { std: "docker" "start" "-a" "373e09cccc41644c93d1bfeb64a434d6891cb0cda6c2bc021efc2febccf21a9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "373e09cccc41644c93d1bfeb64a434d6891cb0cda6c2bc021efc2febccf21a9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "373e09cccc41644c93d1bfeb64a434d6891cb0cda6c2bc021efc2febccf21a9c", kill_on_drop: false }`
[INFO] [stdout] 373e09cccc41644c93d1bfeb64a434d6891cb0cda6c2bc021efc2febccf21a9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9caf0747bb4278845231c3e3f0829538e5c3b08909a81f9474894eeb4bcc72c6
[INFO] running `Command { std: "docker" "start" "-a" "9caf0747bb4278845231c3e3f0829538e5c3b08909a81f9474894eeb4bcc72c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling linfa v0.7.0
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking order-stat v0.1.3
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking miniz_oxide v0.7.1
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[INFO] [stderr]    Compiling quote v1.0.33
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[INFO] [stderr]     Checking getrandom v0.2.10
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking pest v2.7.4
[INFO] [stderr]     Checking sprs v0.11.1
[INFO] [stderr]     Checking ndarray-stats v0.5.1
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking ndarray-csv v0.5.1
[INFO] [stderr]     Checking linfa-linalg v0.1.0
[INFO] [stderr]    Compiling pest_meta v2.7.4
[INFO] [stderr]    Compiling pest_generator v2.7.4
[INFO] [stderr]    Compiling pest_derive v2.7.4
[INFO] [stderr]     Checking py_literal v0.4.0
[INFO] [stderr]     Checking linfa-nn v0.7.0
[INFO] [stderr]     Checking linfa-datasets v0.7.0
[INFO] [stderr]     Checking linfa-kernel v0.7.0
[INFO] [stderr]     Checking ndarray-npy v0.8.1
[INFO] [stderr]     Checking linfa-reduction v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Array2` is imported redundantly
[INFO] [stdout]    --> src/pca.rs:223:26
[INFO] [stdout]     |
[INFO] [stdout] 219 |     use super::*;
[INFO] [stdout]     |         -------- the item `Array2` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 223 |     use ndarray::{array, Array2};
[INFO] [stdout]     |                          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SmallRng` is imported redundantly
[INFO] [stdout]    --> src/pca.rs:228:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |     use super::*;
[INFO] [stdout]     |         -------- the item `SmallRng` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 228 |     use rand::{rngs::SmallRng, SeedableRng};
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SeedableRng` is imported redundantly
[INFO] [stdout]    --> src/pca.rs:228:32
[INFO] [stdout]     |
[INFO] [stdout] 219 |     use super::*;
[INFO] [stdout]     |         -------- the item `SeedableRng` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 228 |     use rand::{rngs::SmallRng, SeedableRng};
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.24s
[INFO] running `Command { std: "docker" "inspect" "9caf0747bb4278845231c3e3f0829538e5c3b08909a81f9474894eeb4bcc72c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9caf0747bb4278845231c3e3f0829538e5c3b08909a81f9474894eeb4bcc72c6", kill_on_drop: false }`
[INFO] [stdout] 9caf0747bb4278845231c3e3f0829538e5c3b08909a81f9474894eeb4bcc72c6