[INFO] cloning repository https://github.com/dandelion-blanc/practice05_ndarray
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dandelion-blanc/practice05_ndarray" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandelion-blanc%2Fpractice05_ndarray", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandelion-blanc%2Fpractice05_ndarray'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab1a3d7aeeefe9e5b51f7b72d7adbb01ebc86e8b
[INFO] testing dandelion-blanc/practice05_ndarray against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandelion-blanc%2Fpractice05_ndarray" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dandelion-blanc/practice05_ndarray on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dandelion-blanc/practice05_ndarray
[INFO] finished tweaking git repo https://github.com/dandelion-blanc/practice05_ndarray
[INFO] tweaked toml for git repo https://github.com/dandelion-blanc/practice05_ndarray written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/dandelion-blanc/practice05_ndarray already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3036746d0dd932148f1fc6d0cb66ecfd47cd923b8b73c382c81b3f258c3296a9
[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" "3036746d0dd932148f1fc6d0cb66ecfd47cd923b8b73c382c81b3f258c3296a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3036746d0dd932148f1fc6d0cb66ecfd47cd923b8b73c382c81b3f258c3296a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3036746d0dd932148f1fc6d0cb66ecfd47cd923b8b73c382c81b3f258c3296a9", kill_on_drop: false }`
[INFO] [stdout] 3036746d0dd932148f1fc6d0cb66ecfd47cd923b8b73c382c81b3f258c3296a9
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--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] 8f34b3f1436a7a17a5db54c0e090d9a0fb88d721283ebb82c19a2089ad034fa7
[INFO] running `Command { std: "docker" "start" "-a" "8f34b3f1436a7a17a5db54c0e090d9a0fb88d721283ebb82c19a2089ad034fa7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling matrixmultiply v0.2.3
[INFO] [stderr]    Compiling practice05_ndarray v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut matrix1 = Array::<f64, _>::from_elem( (4, 4), 2.0);
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.18s
[INFO] running `Command { std: "docker" "inspect" "8f34b3f1436a7a17a5db54c0e090d9a0fb88d721283ebb82c19a2089ad034fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f34b3f1436a7a17a5db54c0e090d9a0fb88d721283ebb82c19a2089ad034fa7", kill_on_drop: false }`
[INFO] [stdout] 8f34b3f1436a7a17a5db54c0e090d9a0fb88d721283ebb82c19a2089ad034fa7
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--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] 11aac2e90f5b87a6c21c0a8f3c5d69073ac4ffe9af97cbc9379a721d3de898e9
[INFO] running `Command { std: "docker" "start" "-a" "11aac2e90f5b87a6c21c0a8f3c5d69073ac4ffe9af97cbc9379a721d3de898e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling practice05_ndarray v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut matrix1 = Array::<f64, _>::from_elem( (4, 4), 2.0);
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/practice05_ndarray-67fd58fb957859d1)
[INFO] running `Command { std: "docker" "inspect" "11aac2e90f5b87a6c21c0a8f3c5d69073ac4ffe9af97cbc9379a721d3de898e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11aac2e90f5b87a6c21c0a8f3c5d69073ac4ffe9af97cbc9379a721d3de898e9", kill_on_drop: false }`
[INFO] [stdout] 11aac2e90f5b87a6c21c0a8f3c5d69073ac4ffe9af97cbc9379a721d3de898e9
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] bd26922f858e7185f9e7f0bfafa3268a5c1a6a608110119ae43e6f4611562194
[INFO] running `Command { std: "docker" "start" "-a" "bd26922f858e7185f9e7f0bfafa3268a5c1a6a608110119ae43e6f4611562194", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:47:6
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 47 |     let mut matrix1 = Array::<f64, _>::from_elem( (4, 4), 2.0);
[INFO] [stdout] 
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `practice05_ndarray` (bin "practice05_ndarray" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/practice05_ndarray-67fd58fb957859d1)
[INFO] running `Command { std: "docker" "inspect" "bd26922f858e7185f9e7f0bfafa3268a5c1a6a608110119ae43e6f4611562194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd26922f858e7185f9e7f0bfafa3268a5c1a6a608110119ae43e6f4611562194", kill_on_drop: false }`
[INFO] [stdout] bd26922f858e7185f9e7f0bfafa3268a5c1a6a608110119ae43e6f4611562194