[INFO] fetching crate scarecrow 0.1.0...
[INFO] checking scarecrow-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate scarecrow 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate scarecrow 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scarecrow 0.1.0
[INFO] finished tweaking crates.io crate scarecrow 0.1.0
[INFO] tweaked toml for crates.io crate scarecrow 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbbb3b13d900372e09428fe25f06ecd010ac440dfa0f97c4f347b161d843780b
[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" "cbbb3b13d900372e09428fe25f06ecd010ac440dfa0f97c4f347b161d843780b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbbb3b13d900372e09428fe25f06ecd010ac440dfa0f97c4f347b161d843780b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbbb3b13d900372e09428fe25f06ecd010ac440dfa0f97c4f347b161d843780b", kill_on_drop: false }`
[INFO] [stdout] cbbb3b13d900372e09428fe25f06ecd010ac440dfa0f97c4f347b161d843780b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] dae13598fc72ff6f2c4508733aeb80a06bb08a98693f46fbef6d609b38fbd058
[INFO] running `Command { std: "docker" "start" "-a" "dae13598fc72ff6f2c4508733aeb80a06bb08a98693f46fbef6d609b38fbd058", kill_on_drop: false }`
[INFO] [stderr]     Checking scarecrow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/traits.rs:108:49
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn train(&self, layers: &mut LinkedList<Box<WeightedLayer>>, inputs: &[f32], targets: &[f32]);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub loss: Box<DifferentiableLossFunction>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn DifferentiableLossFunction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn weight_step(&self, layer: &Box<WeightedLayer>, inputs: &[f32], delta: &[f32]) -> Vec<f32> {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn bias_step(&self, layer: &Box<WeightedLayer>, delta: &[f32]) -> Vec<f32> {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:55:49
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn train(&self, layers: &mut LinkedList<Box<WeightedLayer>>, inputs: &[f32], targets: &[f32]) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/traits.rs:108:49
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn train(&self, layers: &mut LinkedList<Box<WeightedLayer>>, inputs: &[f32], targets: &[f32]);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub loss: Box<DifferentiableLossFunction>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn DifferentiableLossFunction`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn weight_step(&self, layer: &Box<WeightedLayer>, inputs: &[f32], delta: &[f32]) -> Vec<f32> {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn bias_step(&self, layer: &Box<WeightedLayer>, delta: &[f32]) -> Vec<f32> {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sgd.rs:55:49
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn train(&self, layers: &mut LinkedList<Box<WeightedLayer>>, inputs: &[f32], targets: &[f32]) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/sgd.rs:16:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut layers: LinkedList<Box<WeightedLayer>> = LinkedList::new();
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn WeightedLayer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dae13598fc72ff6f2c4508733aeb80a06bb08a98693f46fbef6d609b38fbd058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dae13598fc72ff6f2c4508733aeb80a06bb08a98693f46fbef6d609b38fbd058", kill_on_drop: false }`
[INFO] [stdout] dae13598fc72ff6f2c4508733aeb80a06bb08a98693f46fbef6d609b38fbd058