[INFO] cloning repository https://github.com/jareks/ndarray-100-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jareks/ndarray-100-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjareks%2Fndarray-100-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjareks%2Fndarray-100-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fb79856738f5f1b9b50e363de7a45b5ba68fbaa
[INFO] checking jareks/ndarray-100-exercises against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjareks%2Fndarray-100-exercises" "/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/jareks/ndarray-100-exercises 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 git repo https://github.com/jareks/ndarray-100-exercises
[INFO] finished tweaking git repo https://github.com/jareks/ndarray-100-exercises
[INFO] tweaked toml for git repo https://github.com/jareks/ndarray-100-exercises written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jareks/ndarray-100-exercises 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] 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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23a04ef23f12884be904cde5cfa36b91afbd9dcba806982b5915503242ed742c
[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" "23a04ef23f12884be904cde5cfa36b91afbd9dcba806982b5915503242ed742c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23a04ef23f12884be904cde5cfa36b91afbd9dcba806982b5915503242ed742c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23a04ef23f12884be904cde5cfa36b91afbd9dcba806982b5915503242ed742c", kill_on_drop: false }`
[INFO] [stdout] 23a04ef23f12884be904cde5cfa36b91afbd9dcba806982b5915503242ed742c
[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" "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] aea2d33729d86b6d502b3e280eb2321b2a6f4d4fc810dceaa5275a8d9579ff3f
[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" "aea2d33729d86b6d502b3e280eb2321b2a6f4d4fc810dceaa5275a8d9579ff3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.1.13
[INFO] [stderr]     Checking either v1.0.2
[INFO] [stderr]    Compiling ndarray v0.7.2
[INFO] [stderr]     Checking num-complex v0.1.35
[INFO] [stderr]     Checking itertools v0.5.8
[INFO] [stderr]     Checking ndarray-rand v0.3.1
[INFO] [stderr]     Checking ndarray-100-exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use(s)]
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use ndarray::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray_rand::RandomExt`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray_rand::RandomExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use(s)]
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:25:36
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let arr = Array1::<f64>::zeros((10));
[INFO] [stdout]    |                                    ^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:33:40
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut arr = Array1::<f64>::zeros((10));
[INFO] [stdout]    |                                        ^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:131:42
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let arr: Array1<f64> = Array::random((30), rand::distributions::normal::Normal::new(0.0, 10.0));
[INFO] [stdout]     |                                          ^^^^ help: remove these parentheses
[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 [unoptimized + debuginfo] target(s) in 6.28s
[INFO] running `Command { std: "docker" "inspect" "aea2d33729d86b6d502b3e280eb2321b2a6f4d4fc810dceaa5275a8d9579ff3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aea2d33729d86b6d502b3e280eb2321b2a6f4d4fc810dceaa5275a8d9579ff3f", kill_on_drop: false }`
[INFO] [stdout] aea2d33729d86b6d502b3e280eb2321b2a6f4d4fc810dceaa5275a8d9579ff3f