[INFO] fetching crate tsuga 0.1.1...
[INFO] checking tsuga-0.1.1 against beta for pr-78714
[INFO] extracting crate tsuga 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate tsuga 0.1.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tsuga 0.1.1
[INFO] finished tweaking crates.io crate tsuga 0.1.1
[INFO] tweaked toml for crates.io crate tsuga 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate tsuga 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c85614471f2b41d6695531084d26e945861ea4e16297f8efa263cf6a060374a
[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" "9c85614471f2b41d6695531084d26e945861ea4e16297f8efa263cf6a060374a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c85614471f2b41d6695531084d26e945861ea4e16297f8efa263cf6a060374a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c85614471f2b41d6695531084d26e945861ea4e16297f8efa263cf6a060374a", kill_on_drop: false }`
[INFO] [stdout] 9c85614471f2b41d6695531084d26e945861ea4e16297f8efa263cf6a060374a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8aa4543db209798c51f885fb97b69b251cc36dd671093887c193ce2e885c407
[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" "a8aa4543db209798c51f885fb97b69b251cc36dd671093887c193ce2e885c407", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling wayland-sys v0.27.0
[INFO] [stderr]    Compiling xkbcommon-sys v0.7.4
[INFO] [stderr]    Compiling minifb v0.18.0
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking noisy_float v0.1.13
[INFO] [stderr]    Compiling wayland-scanner v0.27.0
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num-rational v0.3.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling wayland-client v0.27.0
[INFO] [stderr]    Compiling wayland-protocols v0.27.0
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking xcursor v0.3.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking openssl-sys v0.9.58
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking x11-dl v2.18.5
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking openssl v0.10.30
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking crossterm v0.17.7
[INFO] [stderr]     Checking xkb v0.2.1
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling serial_test_derive v0.4.0
[INFO] [stderr]     Checking wayland-commons v0.27.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking serial_test v0.4.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking image v0.23.9
[INFO] [stderr]     Checking wayland-cursor v0.27.0
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking imageproc v0.20.0
[INFO] [stderr]     Checking ndarray-rand v0.11.0
[INFO] [stderr]     Checking ndarray-stats v0.3.0
[INFO] [stderr]     Checking cifar-ten v0.1.0
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking tsuga v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking mnist v0.4.1
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/cifar.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let (mut train_data, train_labels, mut test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |          ----^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/cifar.rs:27:40
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let (mut train_data, train_labels, mut test_data, test_labels) = Cifar10::default()
[INFO] [stdout]    |                                        ----^^^^^^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/test.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     network.train();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/test.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     network.train();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 31s
[INFO] running `Command { std: "docker" "inspect" "a8aa4543db209798c51f885fb97b69b251cc36dd671093887c193ce2e885c407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8aa4543db209798c51f885fb97b69b251cc36dd671093887c193ce2e885c407", kill_on_drop: false }`
[INFO] [stdout] a8aa4543db209798c51f885fb97b69b251cc36dd671093887c193ce2e885c407