[INFO] cloning repository https://github.com/gilcu2/hello_cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gilcu2/hello_cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilcu2%2Fhello_cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilcu2%2Fhello_cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6a417b071622947dab633ba53d70b96ebb40850
[INFO] documenting gilcu2/hello_cargo against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilcu2%2Fhello_cargo" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gilcu2/hello_cargo on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gilcu2/hello_cargo
[INFO] finished tweaking git repo https://github.com/gilcu2/hello_cargo
[INFO] tweaked toml for git repo https://github.com/gilcu2/hello_cargo written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/gilcu2/hello_cargo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 733d9db364d25ffe32aba37d512f31155ead41157ecba2c000b395e8561138a4
[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" "733d9db364d25ffe32aba37d512f31155ead41157ecba2c000b395e8561138a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "733d9db364d25ffe32aba37d512f31155ead41157ecba2c000b395e8561138a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "733d9db364d25ffe32aba37d512f31155ead41157ecba2c000b395e8561138a4", kill_on_drop: false }`
[INFO] [stdout] 733d9db364d25ffe32aba37d512f31155ead41157ecba2c000b395e8561138a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6159c4c5af13c070eb2d23a7157458f9dae120bc6129019ab572e1d79e8434f
[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" "b6159c4c5af13c070eb2d23a7157458f9dae120bc6129019ab572e1d79e8434f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]     Checking futures v0.1.26
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking ordered_iter v0.1.1
[INFO] [stderr]    Compiling rustlearn v0.5.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking tokio-executor v0.1.7
[INFO] [stderr]     Checking tokio-sync v0.1.5
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking signal-hook v0.1.9
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking vpsearch v1.3.5
[INFO] [stderr]     Checking vectors v0.3.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking optimization v0.1.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking rulinalg v0.3.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking rusty-machine v0.5.4
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.93
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `compute_grad` has an incompatible type for trait
[INFO] [stdout]   --> src/bin/gradient_descendent_2D.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn compute_grad(&self, params: &[(f64, f64)], _: &Matrix<f64>, _: &Matrix<f64>) -> (f64, Vec<f64>) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `f64`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&XSqModel2D, &[f64], &rm::prelude::Matrix<(f64, f64)>, &rm::prelude::Matrix<f64>) -> (_, std::vec::Vec<_>)`
[INFO] [stdout]               found fn pointer `fn(&XSqModel2D, &[(f64, f64)], &rm::prelude::Matrix<f64>, &rm::prelude::Matrix<f64>) -> (_, std::vec::Vec<_>)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `hello_cargo`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name gradient_descendent_2D src/bin/gradient_descendent_2D.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-de00bc10bf2730f1.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-4123a8b768248f41.rmeta --extern hello_cargo=/opt/rustwide/target/debug/deps/libhello_cargo-25938fbfcae88191.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-36015e93e58ac84c.rmeta --extern optimization=/opt/rustwide/target/debug/deps/liboptimization-703e036dea13c1a8.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c71bffbe19da0848.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-3c529275b9b34fb0.rmeta --extern rustlearn=/opt/rustwide/target/debug/deps/librustlearn-84a9d0f3db31c3ae.rmeta --extern rusty_machine=/opt/rustwide/target/debug/deps/librusty_machine-e084eb049550305e.rmeta --extern vectors=/opt/rustwide/target/debug/deps/libvectors-ad32f00e96c44ae7.rmeta --extern vpsearch=/opt/rustwide/target/debug/deps/libvpsearch-c809449352979c14.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b6159c4c5af13c070eb2d23a7157458f9dae120bc6129019ab572e1d79e8434f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6159c4c5af13c070eb2d23a7157458f9dae120bc6129019ab572e1d79e8434f", kill_on_drop: false }`
[INFO] [stdout] b6159c4c5af13c070eb2d23a7157458f9dae120bc6129019ab572e1d79e8434f
