[INFO] fetching crate piston-binpool 0.1.0...
[INFO] checking piston-binpool-0.1.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate piston-binpool 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate piston-binpool 0.1.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ecdd960d2fc179bcc15c4dc9849b393dd6bc53e1a2afe31222c53c218ea3de8
[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" "7ecdd960d2fc179bcc15c4dc9849b393dd6bc53e1a2afe31222c53c218ea3de8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ecdd960d2fc179bcc15c4dc9849b393dd6bc53e1a2afe31222c53c218ea3de8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ecdd960d2fc179bcc15c4dc9849b393dd6bc53e1a2afe31222c53c218ea3de8", kill_on_drop: false }`
[INFO] [stdout] 7ecdd960d2fc179bcc15c4dc9849b393dd6bc53e1a2afe31222c53c218ea3de8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3a637898142f3bc155226159872b057bab5f6865438e9b6310f7d67c959ed9b
[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" "b3a637898142f3bc155226159872b057bab5f6865438e9b6310f7d67c959ed9b", 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 1.04s
[INFO] running `Command { std: "docker" "inspect" "b3a637898142f3bc155226159872b057bab5f6865438e9b6310f7d67c959ed9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3a637898142f3bc155226159872b057bab5f6865438e9b6310f7d67c959ed9b", kill_on_drop: false }`
[INFO] [stdout] b3a637898142f3bc155226159872b057bab5f6865438e9b6310f7d67c959ed9b