[INFO] cloning repository https://github.com/bytesnake/erkenntnis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bytesnake/erkenntnis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbytesnake%2Ferkenntnis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbytesnake%2Ferkenntnis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f314b2134594016885f0b26599cb6c8355eee2bf
[INFO] testing bytesnake/erkenntnis 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%2Fbytesnake%2Ferkenntnis" "/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/bytesnake/erkenntnis 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/bytesnake/erkenntnis
[INFO] finished tweaking git repo https://github.com/bytesnake/erkenntnis
[INFO] tweaked toml for git repo https://github.com/bytesnake/erkenntnis written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/bytesnake/erkenntnis 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] 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" "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] 8354432d1b6b23d6c114289ffce8fdcf15de3e1cb5ea2c2a3eabf13130d32cfc
[INFO] running `Command { std: "docker" "start" "-a" "8354432d1b6b23d6c114289ffce8fdcf15de3e1cb5ea2c2a3eabf13130d32cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8354432d1b6b23d6c114289ffce8fdcf15de3e1cb5ea2c2a3eabf13130d32cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8354432d1b6b23d6c114289ffce8fdcf15de3e1cb5ea2c2a3eabf13130d32cfc", kill_on_drop: false }`
[INFO] [stdout] 8354432d1b6b23d6c114289ffce8fdcf15de3e1cb5ea2c2a3eabf13130d32cfc
[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=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] b92053570390f5fcda737f7633da0c6960070f15126d34c320fa653c6b435443
[INFO] running `Command { std: "docker" "start" "-a" "b92053570390f5fcda737f7633da0c6960070f15126d34c320fa653c6b435443", kill_on_drop: false }`
[INFO] [stderr]    Compiling tensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `inputs`
[INFO] [stdout]   --> src/op.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     inputs: Vec<Tensor>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `graph`
[INFO] [stdout]   --> src/op.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     graph: Rc<RefCell<Graph>>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `op`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     op: Box<dyn Op>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `input_nodes`
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     input_nodes: Vec<Tensor>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/lib.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub(crate) fn add(&mut self, mut node: Node) -> usize {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b92053570390f5fcda737f7633da0c6960070f15126d34c320fa653c6b435443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b92053570390f5fcda737f7633da0c6960070f15126d34c320fa653c6b435443", kill_on_drop: false }`
[INFO] [stdout] b92053570390f5fcda737f7633da0c6960070f15126d34c320fa653c6b435443
[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=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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e2907dd18179e01aa02af18d2cca5568b8ddef69b28a227503ae533dc068600
[INFO] running `Command { std: "docker" "start" "-a" "2e2907dd18179e01aa02af18d2cca5568b8ddef69b28a227503ae533dc068600", kill_on_drop: false }`
[INFO] [stderr]    Compiling tensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `inputs`
[INFO] [stdout]   --> src/op.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     inputs: Vec<Tensor>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `graph`
[INFO] [stdout]   --> src/op.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     graph: Rc<RefCell<Graph>>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `op`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     op: Box<dyn Op>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `input_nodes`
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     input_nodes: Vec<Tensor>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/lib.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub(crate) fn add(&mut self, mut node: Node) -> usize {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Array2`
[INFO] [stdout]   --> src/lib.rs:54:32
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let input = graph.load(Array2::zeros((5, 5))).await;
[INFO] [stdout]    |                                ^^^^^^ use of undeclared type `Array2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Array2`
[INFO] [stdout]   --> src/lib.rs:55:46
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let parameter = graph.load_trainable(Array2::zeros((5, 5))).await;
[INFO] [stdout]    |                                              ^^^^^^ use of undeclared type `Array2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `en`
[INFO] [stdout]   --> src/lib.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let graph = en::Graph::on_cpu();
[INFO] [stdout]    |                         ^^^^^ not found in `en`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 49 |     use crate::Graph;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn it_works() {
[INFO] [stdout]    |        -------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         let input = graph.load(Array2::zeros((5, 5))).await;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn it_works() {
[INFO] [stdout]    |        -------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 55 |         let parameter = graph.load_trainable(Array2::zeros((5, 5))).await;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn it_works() {
[INFO] [stdout]    |        -------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 63 |         let result = output.await;
[INFO] [stdout]    |                      ^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0728.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tensor` due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "2e2907dd18179e01aa02af18d2cca5568b8ddef69b28a227503ae533dc068600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2907dd18179e01aa02af18d2cca5568b8ddef69b28a227503ae533dc068600", kill_on_drop: false }`
[INFO] [stdout] 2e2907dd18179e01aa02af18d2cca5568b8ddef69b28a227503ae533dc068600