[INFO] fetching crate linfa-preprocessing 0.7.0...
[INFO] checking linfa-preprocessing-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate linfa-preprocessing 0.7.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate linfa-preprocessing 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-preprocessing 0.7.0
[INFO] finished tweaking crates.io crate linfa-preprocessing 0.7.0
[INFO] tweaked toml for crates.io crate linfa-preprocessing 0.7.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate linfa-preprocessing 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xattr v1.0.1
[INFO] [stderr]   Downloaded ndarray-rand v0.14.0
[INFO] [stderr]   Downloaded cblas-sys v0.1.4
[INFO] [stderr]   Downloaded cauchy v0.4.0
[INFO] [stderr]   Downloaded serde_regex v1.1.0
[INFO] [stderr]   Downloaded lapack-sys v0.12.1
[INFO] [stderr]   Downloaded lax v0.15.0
[INFO] [stderr]   Downloaded iai v0.1.1
[INFO] [stderr]   Downloaded linfa-bayes v0.7.0
[INFO] [stderr]   Downloaded curl v0.4.44
[INFO] [stderr]   Downloaded lapack v0.18.0
[INFO] [stderr]   Downloaded regex v1.10.1
[INFO] [stderr]   Downloaded regex-automata v0.4.2
[INFO] [stderr]   Downloaded linfa-linalg v0.1.0
[INFO] [stderr]   Downloaded ndarray-linalg v0.15.0
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded curl-sys v0.4.68+curl-8.4.0
[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] 3cf7051486d9210bb5ffe3c0f365bf2b293bf476342746959238f5f59e84e257
[INFO] running `Command { std: "docker" "start" "-a" "3cf7051486d9210bb5ffe3c0f365bf2b293bf476342746959238f5f59e84e257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cf7051486d9210bb5ffe3c0f365bf2b293bf476342746959238f5f59e84e257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cf7051486d9210bb5ffe3c0f365bf2b293bf476342746959238f5f59e84e257", kill_on_drop: false }`
[INFO] [stdout] 3cf7051486d9210bb5ffe3c0f365bf2b293bf476342746959238f5f59e84e257
[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] 82187ff2ae43c4df9552ecd9e6e24627647b0afb64412e1d5e3fd9c720120245
[INFO] running `Command { std: "docker" "start" "-a" "82187ff2ae43c4df9552ecd9e6e24627647b0afb64412e1d5e3fd9c720120245", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
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[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling linfa v0.7.0
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking csv-core v0.1.11
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[INFO] [stderr]    Compiling thiserror-impl v1.0.49
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[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling openssl-sys v0.9.93
[INFO] [stderr]    Compiling curl-sys v0.4.68+curl-8.4.0
[INFO] [stderr]     Checking encoding v0.2.33
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[INFO] [stderr]     Checking regex-automata v0.4.2
[INFO] [stderr]     Checking unicode-normalization v0.1.22
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[INFO] [stderr]     Checking regex v1.10.1
[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]     Checking linfa-datasets v0.7.0
[INFO] [stderr]     Checking linfa-bayes v0.7.0
[INFO] [stderr]     Checking linfa-preprocessing v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]  --> src/countgrams/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::IntoIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `IntoIterator` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]  --> src/countgrams/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::IntoIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `IntoIterator` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.95s
[INFO] running `Command { std: "docker" "inspect" "82187ff2ae43c4df9552ecd9e6e24627647b0afb64412e1d5e3fd9c720120245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82187ff2ae43c4df9552ecd9e6e24627647b0afb64412e1d5e3fd9c720120245", kill_on_drop: false }`
[INFO] [stdout] 82187ff2ae43c4df9552ecd9e6e24627647b0afb64412e1d5e3fd9c720120245