[INFO] fetching crate dumbnet 0.1.0...
[INFO] checking dumbnet-0.1.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate dumbnet 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate dumbnet 0.1.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dumbnet 0.1.0
[INFO] finished tweaking crates.io crate dumbnet 0.1.0
[INFO] tweaked toml for crates.io crate dumbnet 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate dumbnet 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gnuplot v0.0.32
[INFO] [stderr]   Downloaded numeric-array v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 902d134fcc187c80c7827eddefe57723303b46ebfd2c2e2510fca7e3c4f2d7a0
[INFO] running `Command { std: "docker" "start" "-a" "902d134fcc187c80c7827eddefe57723303b46ebfd2c2e2510fca7e3c4f2d7a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "902d134fcc187c80c7827eddefe57723303b46ebfd2c2e2510fca7e3c4f2d7a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "902d134fcc187c80c7827eddefe57723303b46ebfd2c2e2510fca7e3c4f2d7a0", kill_on_drop: false }`
[INFO] [stdout] 902d134fcc187c80c7827eddefe57723303b46ebfd2c2e2510fca7e3c4f2d7a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1164d3f3ced8d60eb7c05fbe511bf6c5be36bf39858cd3608a4606b5a74e31fd
[INFO] running `Command { std: "docker" "start" "-a" "1164d3f3ced8d60eb7c05fbe511bf6c5be36bf39858cd3608a4606b5a74e31fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking gnuplot v0.0.32
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking indicatif v0.13.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking numeric-array v0.4.2
[INFO] [stderr]     Checking dumbnet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:53:2
[INFO] [stdout]    |
[INFO] [stdout] 53 |     /// number of inputs this layer takes
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     Input: AL,
[INFO] [stdout]    |     ----- rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:55:2
[INFO] [stdout]    |
[INFO] [stdout] 55 |     /// number of neurons this layer has
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 56 |     Neurons: NL<Input>,
[INFO] [stdout]    |     ------- rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:57:2
[INFO] [stdout]    |
[INFO] [stdout] 57 |     /// number of neurons of the final layer
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 58 |     FinalOut: AL,
[INFO] [stdout]    |     -------- rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:59:2
[INFO] [stdout]    |
[INFO] [stdout] 59 |     /// activation function
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 60 |     A: Activation,
[INFO] [stdout]    |     - rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:53:2
[INFO] [stdout]    |
[INFO] [stdout] 53 |     /// number of inputs this layer takes
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     Input: AL,
[INFO] [stdout]    |     ----- rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:55:2
[INFO] [stdout]    |
[INFO] [stdout] 55 |     /// number of neurons this layer has
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 56 |     Neurons: NL<Input>,
[INFO] [stdout]    |     ------- rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:57:2
[INFO] [stdout]    |
[INFO] [stdout] 57 |     /// number of neurons of the final layer
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 58 |     FinalOut: AL,
[INFO] [stdout]    |     -------- rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/layers.rs:59:2
[INFO] [stdout]    |
[INFO] [stdout] 59 |     /// activation function
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 60 |     A: Activation,
[INFO] [stdout]    |     - rustdoc does not generate documentation for generic parameters
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.90s
[INFO] running `Command { std: "docker" "inspect" "1164d3f3ced8d60eb7c05fbe511bf6c5be36bf39858cd3608a4606b5a74e31fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1164d3f3ced8d60eb7c05fbe511bf6c5be36bf39858cd3608a4606b5a74e31fd", kill_on_drop: false }`
[INFO] [stdout] 1164d3f3ced8d60eb7c05fbe511bf6c5be36bf39858cd3608a4606b5a74e31fd