[INFO] cloning repository https://github.com/nirshahar/SVM
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nirshahar/SVM" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirshahar%2FSVM", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirshahar%2FSVM'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7471a165f7c255befe27bc55a14fa68dbab86893
[INFO] checking nirshahar/SVM against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirshahar%2FSVM" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nirshahar/SVM on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nirshahar/SVM
[INFO] finished tweaking git repo https://github.com/nirshahar/SVM
[INFO] tweaked toml for git repo https://github.com/nirshahar/SVM written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nirshahar/SVM 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking nirshahar/SVM against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirshahar%2FSVM" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nirshahar/SVM on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nirshahar/SVM
[INFO] finished tweaking git repo https://github.com/nirshahar/SVM
[INFO] tweaked toml for git repo https://github.com/nirshahar/SVM written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nirshahar/SVM 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded svg v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 253f967aa4cc79a65d85c50212fd40cf2d6d844d6ec821c08920212f0b927348
[INFO] running `Command { std: "docker" "start" "-a" "253f967aa4cc79a65d85c50212fd40cf2d6d844d6ec821c08920212f0b927348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "253f967aa4cc79a65d85c50212fd40cf2d6d844d6ec821c08920212f0b927348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "253f967aa4cc79a65d85c50212fd40cf2d6d844d6ec821c08920212f0b927348", kill_on_drop: false }`
[INFO] [stdout] 253f967aa4cc79a65d85c50212fd40cf2d6d844d6ec821c08920212f0b927348
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8eb727bf1baa03fc1b990a126d64444d14cd68c3b9fc379ec69c4c86f296c3a
[INFO] running `Command { std: "docker" "start" "-a" "a8eb727bf1baa03fc1b990a126d64444d14cd68c3b9fc379ec69c4c86f296c3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking svg v0.9.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking rand_distr v0.4.0
[INFO] [stderr]     Checking svm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Shape`, `array`
[INFO] [stdout]  --> src/kernel.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{array, Array1, ArrayView1, Shape};
[INFO] [stdout]   |               ^^^^^                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Shape`, `array`
[INFO] [stdout]  --> src/kernel.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{array, Array1, ArrayView1, Shape};
[INFO] [stdout]   |               ^^^^^                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_points`
[INFO] [stdout]   --> src/kernel.rs:40:73
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn learn_model<K : Fn(ArrayView1<'_, f32>, ArrayView1<'_, f32>) -> f32>(data_points: &[DataPoint], kernel: K) -> Model<K> {
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_points`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kernel`
[INFO] [stdout]   --> src/kernel.rs:40:100
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn learn_model<K : Fn(ArrayView1<'_, f32>, ArrayView1<'_, f32>) -> f32>(data_points: &[DataPoint], kernel: K) -> Model<K> {
[INFO] [stdout]    |                                                                                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_points`
[INFO] [stdout]   --> src/kernel.rs:40:73
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn learn_model<K : Fn(ArrayView1<'_, f32>, ArrayView1<'_, f32>) -> f32>(data_points: &[DataPoint], kernel: K) -> Model<K> {
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_points`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kernel`
[INFO] [stdout]   --> src/kernel.rs:40:100
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn learn_model<K : Fn(ArrayView1<'_, f32>, ArrayView1<'_, f32>) -> f32>(data_points: &[DataPoint], kernel: K) -> Model<K> {
[INFO] [stdout]    |                                                                                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `proj_gd` is never used
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn proj_gd<P>(
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Model` is never constructed
[INFO] [stdout]  --> src/kernel.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Model<'a, K> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dual_grad_at_data_point` is never used
[INFO] [stdout]   --> src/kernel.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn dual_grad_at_data_point(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dual_grad_with_kernel` is never used
[INFO] [stdout]   --> src/kernel.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn dual_grad_with_kernel(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `learn_model` is never used
[INFO] [stdout]   --> src/kernel.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn learn_model<K : Fn(ArrayView1<'_, f32>, ArrayView1<'_, f32>) -> f32>(data_points: &[DataPoint], kernel: K) -> Model<K> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_kernel` is never used
[INFO] [stdout]   --> src/kernel.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn square_kernel(x1: ArrayView1<'_, f32>, x2: ArrayView1<'_, f32>, r: i32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rbf_kernel` is never used
[INFO] [stdout]   --> src/kernel.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn rbf_kernel(x1: ArrayView1<'_, f32>, x2: ArrayView1<'_, f32>, sigma: f32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `proj_gd` is never used
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn proj_gd<P>(
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Model` is never constructed
[INFO] [stdout]  --> src/kernel.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Model<'a, K> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dual_grad_at_data_point` is never used
[INFO] [stdout]   --> src/kernel.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn dual_grad_at_data_point(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dual_grad_with_kernel` is never used
[INFO] [stdout]   --> src/kernel.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn dual_grad_with_kernel(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `learn_model` is never used
[INFO] [stdout]   --> src/kernel.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn learn_model<K : Fn(ArrayView1<'_, f32>, ArrayView1<'_, f32>) -> f32>(data_points: &[DataPoint], kernel: K) -> Model<K> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_kernel` is never used
[INFO] [stdout]   --> src/kernel.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn square_kernel(x1: ArrayView1<'_, f32>, x2: ArrayView1<'_, f32>, r: i32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rbf_kernel` is never used
[INFO] [stdout]   --> src/kernel.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn rbf_kernel(x1: ArrayView1<'_, f32>, x2: ArrayView1<'_, f32>, sigma: f32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.74s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: svg v0.9.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a8eb727bf1baa03fc1b990a126d64444d14cd68c3b9fc379ec69c4c86f296c3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8eb727bf1baa03fc1b990a126d64444d14cd68c3b9fc379ec69c4c86f296c3a", kill_on_drop: false }`
[INFO] [stdout] a8eb727bf1baa03fc1b990a126d64444d14cd68c3b9fc379ec69c4c86f296c3a