[INFO] fetching crate gtensor 0.2.1...
[INFO] checking gtensor-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate gtensor 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate gtensor 0.2.1 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 gtensor 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate gtensor 0.2.1
[INFO] tweaked toml for crates.io crate gtensor 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate gtensor 0.2.1 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 build_id v0.2.1
[INFO] [stderr]   Downloaded serde_traitobject v0.2.8
[INFO] [stderr]   Downloaded indexmap v2.1.0
[INFO] [stderr]   Downloaded serde_yaml v0.9.27
[INFO] [stderr]   Downloaded bmp v0.5.0
[INFO] [stderr]   Downloaded dyn-clone v1.0.16
[INFO] [stderr]   Downloaded bmls v1.0.0
[INFO] [stderr]   Downloaded metatype v0.2.1
[INFO] [stderr]   Downloaded heapless v0.5.6
[INFO] [stderr]   Downloaded palaver v0.2.8
[INFO] [stderr]   Downloaded relative v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cc25a14c795a70206c5e43d3758a642956e3aba2e2f25f264a2c210fa4f7d8aa
[INFO] running `Command { std: "docker" "start" "-a" "cc25a14c795a70206c5e43d3758a642956e3aba2e2f25f264a2c210fa4f7d8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc25a14c795a70206c5e43d3758a642956e3aba2e2f25f264a2c210fa4f7d8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc25a14c795a70206c5e43d3758a642956e3aba2e2f25f264a2c210fa4f7d8aa", kill_on_drop: false }`
[INFO] [stdout] cc25a14c795a70206c5e43d3758a642956e3aba2e2f25f264a2c210fa4f7d8aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e83c8abbe6f804773dade2102e9d61d1aaa20d20c9ad93a4bebc0b88a077c7ee
[INFO] running `Command { std: "docker" "start" "-a" "e83c8abbe6f804773dade2102e9d61d1aaa20d20c9ad93a4bebc0b88a077c7ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling build_id v0.2.1
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]    Compiling libm v0.2.8
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[INFO] [stderr]    Compiling serde_derive v1.0.192
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]     Checking rand_distr v0.4.3
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[INFO] [stderr]     Checking serde_traitobject v0.2.8
[INFO] [stderr]     Checking gtensor v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ParallelSliceMut` is imported redundantly
[INFO] [stdout]  --> src/alg/knn.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rayon::slice::ParallelSliceMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 | use rayon::prelude::*;
[INFO] [stdout]   |     ----------------- the item `ParallelSliceMut` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ParallelSliceMut` is imported redundantly
[INFO] [stdout]  --> src/alg/knn.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rayon::slice::ParallelSliceMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 | use rayon::prelude::*;
[INFO] [stdout]   |     ----------------- the item `ParallelSliceMut` is already imported 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] [stdout] warning: the item `csv` is imported redundantly
[INFO] [stdout]  --> examples/knn_mnist.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use csv;
[INFO] [stdout]   |     ^^^ the item `csv` is already defined by prelude
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.23s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v2.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e83c8abbe6f804773dade2102e9d61d1aaa20d20c9ad93a4bebc0b88a077c7ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e83c8abbe6f804773dade2102e9d61d1aaa20d20c9ad93a4bebc0b88a077c7ee", kill_on_drop: false }`
[INFO] [stdout] e83c8abbe6f804773dade2102e9d61d1aaa20d20c9ad93a4bebc0b88a077c7ee