[INFO] cloning repository https://github.com/bytesnake/erkenntnis
[INFO] running `"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"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbytesnake%2Ferkenntnis'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f314b2134594016885f0b26599cb6c8355eee2bf
[INFO] testing bytesnake/erkenntnis against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbytesnake%2Ferkenntnis" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bytesnake/erkenntnis on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/source/Cargo.toml
[INFO] crate git repo https://github.com/bytesnake/erkenntnis already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 733e4a521a035f509cbce287f1427084aabdb1d3dd3b3461451adf78e4d01aa7
[INFO] running `"docker" "start" "-a" "733e4a521a035f509cbce287f1427084aabdb1d3dd3b3461451adf78e4d01aa7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling tensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `inputs`
[INFO] [stderr]   --> src/op.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     inputs: Vec<Tensor>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `graph`
[INFO] [stderr]   --> src/op.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     graph: Rc<RefCell<Graph>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/lib.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     id: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `op`
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     op: Box<dyn Op>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `input_nodes`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     input_nodes: Vec<Tensor>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]   --> src/lib.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub(crate) fn add(&mut self, mut node: Node) -> usize {
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "733e4a521a035f509cbce287f1427084aabdb1d3dd3b3461451adf78e4d01aa7"`
[INFO] running `"docker" "rm" "-f" "733e4a521a035f509cbce287f1427084aabdb1d3dd3b3461451adf78e4d01aa7"`
[INFO] [stdout] 733e4a521a035f509cbce287f1427084aabdb1d3dd3b3461451adf78e4d01aa7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 759d1bd3d044c96e8ef4bb065f157b587a3e3eb42bb74f8606fb594a463c34f8
[INFO] running `"docker" "start" "-a" "759d1bd3d044c96e8ef4bb065f157b587a3e3eb42bb74f8606fb594a463c34f8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling tensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `inputs`
[INFO] [stderr]   --> src/op.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     inputs: Vec<Tensor>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `graph`
[INFO] [stderr]   --> src/op.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     graph: Rc<RefCell<Graph>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/lib.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     id: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `op`
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     op: Box<dyn Op>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `input_nodes`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     input_nodes: Vec<Tensor>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]   --> src/lib.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub(crate) fn add(&mut self, mut node: Node) -> usize {
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `en`
[INFO] [stderr]   --> src/lib.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let graph = en::Graph::on_cpu();
[INFO] [stderr]    |                     ^^ use of undeclared type or module `en`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Array2`
[INFO] [stderr]   --> src/lib.rs:54:32
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let input = graph.load(Array2::zeros((5, 5))).await;
[INFO] [stderr]    |                                ^^^^^^ use of undeclared type or module `Array2`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Array2`
[INFO] [stderr]   --> src/lib.rs:55:46
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let parameter = graph.load_trainable(Array2::zeros((5, 5))).await;
[INFO] [stderr]    |                                              ^^^^^^ use of undeclared type or module `Array2`
[INFO] [stderr] 
[INFO] [stderr] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stderr]   --> src/lib.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn it_works() {
[INFO] [stderr]    |        -------- this is not `async`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         let input = graph.load(Array2::zeros((5, 5))).await;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stderr] 
[INFO] [stderr] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stderr]   --> src/lib.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn it_works() {
[INFO] [stderr]    |        -------- this is not `async`
[INFO] [stderr] ...
[INFO] [stderr] 55 |         let parameter = graph.load_trainable(Array2::zeros((5, 5))).await;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stderr] 
[INFO] [stderr] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stderr]   --> src/lib.rs:63:22
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn it_works() {
[INFO] [stderr]    |        -------- this is not `async`
[INFO] [stderr] ...
[INFO] [stderr] 63 |         let result = output.await;
[INFO] [stderr]    |                      ^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0728.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `tensor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "759d1bd3d044c96e8ef4bb065f157b587a3e3eb42bb74f8606fb594a463c34f8"`
[INFO] running `"docker" "rm" "-f" "759d1bd3d044c96e8ef4bb065f157b587a3e3eb42bb74f8606fb594a463c34f8"`
[INFO] [stdout] 759d1bd3d044c96e8ef4bb065f157b587a3e3eb42bb74f8606fb594a463c34f8