[INFO] fetching crate cogent 0.5.6...
[INFO] checking cogent-0.5.6 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate cogent 0.5.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cogent 0.5.6 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cogent 0.5.6
[INFO] finished tweaking crates.io crate cogent 0.5.6
[INFO] tweaked toml for crates.io crate cogent 0.5.6 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arrayfire v3.7.0
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", 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] 7406232f608bffd738b6ad2efb499e768f2e208bcd4f21947ebe7a6beb90c321
[INFO] running `Command { std: "docker" "start" "-a" "7406232f608bffd738b6ad2efb499e768f2e208bcd4f21947ebe7a6beb90c321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7406232f608bffd738b6ad2efb499e768f2e208bcd4f21947ebe7a6beb90c321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7406232f608bffd738b6ad2efb499e768f2e208bcd4f21947ebe7a6beb90c321", kill_on_drop: false }`
[INFO] [stdout] 7406232f608bffd738b6ad2efb499e768f2e208bcd4f21947ebe7a6beb90c321
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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] 8bd0937ef43fde030c80419a05bb35f5cff4603cb04f2f41f68a8685b029d9cc
[INFO] running `Command { std: "docker" "start" "-a" "8bd0937ef43fde030c80419a05bb35f5cff4603cb04f2f41f68a8685b029d9cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking crossterm v0.17.7
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]    Compiling arrayfire v3.7.0
[INFO] [stderr]     Checking cogent v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `af_print`, `print_gen`, `set_col`
[INFO] [stdout]  --> src/neural_network.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     af_print, cols, constant, device_mem_info, diag_extract, div, eq, imax, print_gen, set_col,
[INFO] [stdout]   |     ^^^^^^^^                                                                ^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `af_print`, `print_gen`, `set_col`
[INFO] [stdout]  --> src/neural_network.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     af_print, cols, constant, device_mem_info, diag_extract, div, eq, imax, print_gen, set_col,
[INFO] [stdout]   |     ^^^^^^^^                                                                ^^^^^^^^^  ^^^^^^^
[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 [unoptimized + debuginfo] target(s) in 31.96s
[INFO] running `Command { std: "docker" "inspect" "8bd0937ef43fde030c80419a05bb35f5cff4603cb04f2f41f68a8685b029d9cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bd0937ef43fde030c80419a05bb35f5cff4603cb04f2f41f68a8685b029d9cc", kill_on_drop: false }`
[INFO] [stdout] 8bd0937ef43fde030c80419a05bb35f5cff4603cb04f2f41f68a8685b029d9cc