[INFO] fetching crate permutator 0.4.0...
[INFO] checking permutator-0.4.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate permutator 0.4.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate permutator 0.4.0 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate permutator 0.4.0
[INFO] finished tweaking crates.io crate permutator 0.4.0
[INFO] tweaked toml for crates.io crate permutator 0.4.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbc22dbe456668c1b295d2b5205304c1a5142cbd8075155a230317a220ef0bb3
[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" "dbc22dbe456668c1b295d2b5205304c1a5142cbd8075155a230317a220ef0bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbc22dbe456668c1b295d2b5205304c1a5142cbd8075155a230317a220ef0bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbc22dbe456668c1b295d2b5205304c1a5142cbd8075155a230317a220ef0bb3", kill_on_drop: false }`
[INFO] [stdout] dbc22dbe456668c1b295d2b5205304c1a5142cbd8075155a230317a220ef0bb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b99c5f746a1b27918363111cdf2db547e6eb9d8ddc2e305f23569cfde9b7589
[INFO] running `Command { std: "docker" "start" "-a" "5b99c5f746a1b27918363111cdf2db547e6eb9d8ddc2e305f23569cfde9b7589", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking permutator v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:2292:6
[INFO] [stdout]      |
[INFO] [stdout] 2292 |     };
[INFO] [stdout]      |      ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:2292:6
[INFO] [stdout]      |
[INFO] [stdout] 2292 |     };
[INFO] [stdout]      |      ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/copy/mod.rs:3047:5
[INFO] [stdout]      |
[INFO] [stdout] 3047 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/copy/mod.rs:3157:5
[INFO] [stdout]      |
[INFO] [stdout] 3157 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/copy/mod.rs:3280:5
[INFO] [stdout]      |
[INFO] [stdout] 3280 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/lib.rs:3747:5
[INFO] [stdout]      |
[INFO] [stdout] 3747 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/lib.rs:3856:5
[INFO] [stdout]      |
[INFO] [stdout] 3856 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/lib.rs:3978:5
[INFO] [stdout]      |
[INFO] [stdout] 3978 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/copy/mod.rs:3047:5
[INFO] [stdout]      |
[INFO] [stdout] 3047 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/copy/mod.rs:3157:5
[INFO] [stdout]      |
[INFO] [stdout] 3157 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/copy/mod.rs:3280:5
[INFO] [stdout]      |
[INFO] [stdout] 3280 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/lib.rs:3747:5
[INFO] [stdout]      |
[INFO] [stdout] 3747 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/lib.rs:3856:5
[INFO] [stdout]      |
[INFO] [stdout] 3856 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]     --> src/lib.rs:3978:5
[INFO] [stdout]      |
[INFO] [stdout] 3978 |     i : usize, // slot index being mutate.
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.38s
[INFO] running `Command { std: "docker" "inspect" "5b99c5f746a1b27918363111cdf2db547e6eb9d8ddc2e305f23569cfde9b7589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b99c5f746a1b27918363111cdf2db547e6eb9d8ddc2e305f23569cfde9b7589", kill_on_drop: false }`
[INFO] [stdout] 5b99c5f746a1b27918363111cdf2db547e6eb9d8ddc2e305f23569cfde9b7589