[INFO] fetching crate piston-binpool 0.1.0...
[INFO] checking piston-binpool-0.1.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate piston-binpool 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate piston-binpool 0.1.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piston-binpool 0.1.0
[INFO] finished tweaking crates.io crate piston-binpool 0.1.0
[INFO] tweaked toml for crates.io crate piston-binpool 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 793ee747b85592596be1d8ee088562e1966d0b8c3fbd47a8b08edf39489cf5d8
[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" "793ee747b85592596be1d8ee088562e1966d0b8c3fbd47a8b08edf39489cf5d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "793ee747b85592596be1d8ee088562e1966d0b8c3fbd47a8b08edf39489cf5d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "793ee747b85592596be1d8ee088562e1966d0b8c3fbd47a8b08edf39489cf5d8", kill_on_drop: false }`
[INFO] [stdout] 793ee747b85592596be1d8ee088562e1966d0b8c3fbd47a8b08edf39489cf5d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bfef68b7e06f3820c43ae8c0e92bb3409ea1d1ddba97f6ba7d95ec51eac0a7f
[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" "8bfef68b7e06f3820c43ae8c0e92bb3409ea1d1ddba97f6ba7d95ec51eac0a7f", kill_on_drop: false }`
[INFO] [stderr]     Checking piston-binpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 286 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:298:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 298 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 306 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:320:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 320 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:332:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 332 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:346:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 346 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:358:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 358 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 369 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:397:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 397 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:409:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 409 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 286 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:298:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 298 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 306 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:320:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 320 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:332:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 332 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:346:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 346 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:358:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 358 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 369 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:397:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 397 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Scalar` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:409:13
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub use read_write::{Array, Matrix, Vector, Scalar};
[INFO] [stdout]     |                                             ------ the item `Scalar` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 409 |         use read_write::Scalar;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "8bfef68b7e06f3820c43ae8c0e92bb3409ea1d1ddba97f6ba7d95ec51eac0a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bfef68b7e06f3820c43ae8c0e92bb3409ea1d1ddba97f6ba7d95ec51eac0a7f", kill_on_drop: false }`
[INFO] [stdout] 8bfef68b7e06f3820c43ae8c0e92bb3409ea1d1ddba97f6ba7d95ec51eac0a7f