[INFO] cloning repository https://github.com/mankinskin/neuralnet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mankinskin/neuralnet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmankinskin%2Fneuralnet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmankinskin%2Fneuralnet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 406df86db73559d1dae723715976e11f9ba4b9f2
[INFO] testing mankinskin/neuralnet against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmankinskin%2Fneuralnet" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mankinskin/neuralnet on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mankinskin/neuralnet
[INFO] finished tweaking git repo https://github.com/mankinskin/neuralnet
[INFO] tweaked toml for git repo https://github.com/mankinskin/neuralnet written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/mankinskin/neuralnet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nalgebra v0.17.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38e5434399daad0bda8c403696b085e242610fa67d913213706bddadab1fa0aa
[INFO] running `Command { std: "docker" "start" "-a" "38e5434399daad0bda8c403696b085e242610fa67d913213706bddadab1fa0aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38e5434399daad0bda8c403696b085e242610fa67d913213706bddadab1fa0aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e5434399daad0bda8c403696b085e242610fa67d913213706bddadab1fa0aa", kill_on_drop: false }`
[INFO] [stdout] 38e5434399daad0bda8c403696b085e242610fa67d913213706bddadab1fa0aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5afe41eec0a5c56e995dc8aab428f72712bb762d2199555476bf1351f6af85f
[INFO] running `Command { std: "docker" "start" "-a" "b5afe41eec0a5c56e995dc8aab428f72712bb762d2199555476bf1351f6af85f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling libm v0.1.2
[INFO] [stderr]    Compiling either v1.5.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling approx v0.3.1
[INFO] [stderr]    Compiling alga v0.8.2
[INFO] [stderr]    Compiling nalgebra v0.17.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stdout] error[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.2/src/base/cg.rs:297:44
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 self[(j, i)] += shift[j] * self[(D::dim() - 1, i)];
[INFO] [stdout]     |                 ---------------------------^^^^-------------------
[INFO] [stdout]     |                 |                          |
[INFO] [stdout]     |                 |                          immutable borrow occurs here
[INFO] [stdout]     |                 mutable borrow occurs here
[INFO] [stdout]     |                 mutable borrow later used here
[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 E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nalgebra` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b5afe41eec0a5c56e995dc8aab428f72712bb762d2199555476bf1351f6af85f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5afe41eec0a5c56e995dc8aab428f72712bb762d2199555476bf1351f6af85f", kill_on_drop: false }`
[INFO] [stdout] b5afe41eec0a5c56e995dc8aab428f72712bb762d2199555476bf1351f6af85f