[INFO] cloning repository https://github.com/steffenhaug/array
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steffenhaug/array" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Farray", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Farray'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 206363dfd9ebd023048e1d02defb129a2ab137ac
[INFO] testing steffenhaug/array against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Farray" "/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/steffenhaug/array on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/steffenhaug/array
[INFO] finished tweaking git repo https://github.com/steffenhaug/array
[INFO] tweaked toml for git repo https://github.com/steffenhaug/array written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/steffenhaug/array already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 859ddd3dacd5bdae384df52449e1c2754e4ffa1b164e3f7e32f1f773b12c6e48
[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" "859ddd3dacd5bdae384df52449e1c2754e4ffa1b164e3f7e32f1f773b12c6e48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "859ddd3dacd5bdae384df52449e1c2754e4ffa1b164e3f7e32f1f773b12c6e48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859ddd3dacd5bdae384df52449e1c2754e4ffa1b164e3f7e32f1f773b12c6e48", kill_on_drop: false }`
[INFO] [stdout] 859ddd3dacd5bdae384df52449e1c2754e4ffa1b164e3f7e32f1f773b12c6e48
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 617e64588aeb8909174783653416bbc49661ef0fb5585b395e4d98519aa5540e
[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" "617e64588aeb8909174783653416bbc49661ef0fb5585b395e4d98519aa5540e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling matrixmultiply v0.2.2
[INFO] [stderr]    Compiling array v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |     let mut d = b.slice(1..3, 1..4);
[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] error[E0594]: cannot assign to data in an index of `Array<PhantomData<&f64>, f64>`
[INFO] [stdout]    --> src/main.rs:328:5
[INFO] [stdout]     |
[INFO] [stdout] 328 |     d[[1, 1]] = 5.;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^ cannot assign
[INFO] [stdout]     |
[INFO] [stdout]     = help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `Array<PhantomData<&f64>, f64>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0594`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `array`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "617e64588aeb8909174783653416bbc49661ef0fb5585b395e4d98519aa5540e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617e64588aeb8909174783653416bbc49661ef0fb5585b395e4d98519aa5540e", kill_on_drop: false }`
[INFO] [stdout] 617e64588aeb8909174783653416bbc49661ef0fb5585b395e4d98519aa5540e