[INFO] fetching crate ktensor 0.1.0...
[INFO] building ktensor-0.1.0 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate ktensor 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate ktensor 0.1.0 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ktensor 0.1.0
[INFO] finished tweaking crates.io crate ktensor 0.1.0
[INFO] tweaked toml for crates.io crate ktensor 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 973c0280f8f7bf6ad0b25c12c3573b06d6ecc90009432e3d918ec7266a065d3f
[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" "973c0280f8f7bf6ad0b25c12c3573b06d6ecc90009432e3d918ec7266a065d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "973c0280f8f7bf6ad0b25c12c3573b06d6ecc90009432e3d918ec7266a065d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "973c0280f8f7bf6ad0b25c12c3573b06d6ecc90009432e3d918ec7266a065d3f", kill_on_drop: false }`
[INFO] [stdout] 973c0280f8f7bf6ad0b25c12c3573b06d6ecc90009432e3d918ec7266a065d3f
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ebeee0f39bb0ed640eee0a6e8d3fd21bebd51d9727607fbe9c7d1c713b166a0
[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" "6ebeee0f39bb0ed640eee0a6e8d3fd21bebd51d9727607fbe9c7d1c713b166a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling ktensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context/mod.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from_vec(context_vec: Vec<(&Graph<T>, Tensor<T>)>) -> Context<T> {
[INFO] [stdout]    |                                        ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     param: Vec<Arc<Graph<T>>>,
[INFO] [stdout]    |                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:29:164
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...sor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, calc_dim: fn(Vec<Vec2>) -> Vec2) -> Node<T> where T: Copy {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:39:169
[INFO] [stdout]    |
[INFO] [stdout] 39 | ...sor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, dimension: Vec2) -> Node<T> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/dot.rs:23:39
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn dot<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Mul<Output=T> + Add<Output=T> + Copy {
[INFO] [stdout]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/dot.rs:23:57
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn dot<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Mul<Output=T> + Add<Output=T> + Copy {
[INFO] [stdout]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/add.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn add<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Copy + Mul<Output=T> + Add<Output=T> {
[INFO] [stdout]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/add.rs:46:57
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn add<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Copy + Mul<Output=T> + Add<Output=T> {
[INFO] [stdout]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/softmax.rs:77:44
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn softmax_f64(node_id: String, a: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/softmax.rs:81:44
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn softmax_f32(node_id: String, a: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/relu.rs:59:41
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn relu_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/relu.rs:63:41
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn relu_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/sigmoid.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn sigmoid_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/sigmoid.rs:67:44
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn sigmoid_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:36:58
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:36:78
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:40:58
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:40:78
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/run/mod.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn execute<T>(node: Arc<Graph<T>>, state: &Context<T>, variables: &Context<T>) -> Tensor<T> where T: Copy {
[INFO] [stdout]   |                             ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/run/mod.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn train<T>(node: Arc<Graph<T>>, state: &mut Context<T>, variables: &Context<T>, history: &mut Context<T>, rate: T) where T: Copy {
[INFO] [stdout]    |                           ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "6ebeee0f39bb0ed640eee0a6e8d3fd21bebd51d9727607fbe9c7d1c713b166a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ebeee0f39bb0ed640eee0a6e8d3fd21bebd51d9727607fbe9c7d1c713b166a0", kill_on_drop: false }`
[INFO] [stdout] 6ebeee0f39bb0ed640eee0a6e8d3fd21bebd51d9727607fbe9c7d1c713b166a0
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad38dd9f17204efaad8cd8b1d4d060a4a63e9ceb89897ac4adaa14434dc5a43f
[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" "ad38dd9f17204efaad8cd8b1d4d060a4a63e9ceb89897ac4adaa14434dc5a43f", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context/mod.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from_vec(context_vec: Vec<(&Graph<T>, Tensor<T>)>) -> Context<T> {
[INFO] [stdout]    |                                        ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     param: Vec<Arc<Graph<T>>>,
[INFO] [stdout]    |                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:29:164
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...sor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, calc_dim: fn(Vec<Vec2>) -> Vec2) -> Node<T> where T: Copy {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:39:169
[INFO] [stdout]    |
[INFO] [stdout] 39 | ...sor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, dimension: Vec2) -> Node<T> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/dot.rs:23:39
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn dot<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Mul<Output=T> + Add<Output=T> + Copy {
[INFO] [stdout]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/dot.rs:23:57
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn dot<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Mul<Output=T> + Add<Output=T> + Copy {
[INFO] [stdout]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/add.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn add<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Copy + Mul<Output=T> + Add<Output=T> {
[INFO] [stdout]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/add.rs:46:57
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn add<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Copy + Mul<Output=T> + Add<Output=T> {
[INFO] [stdout]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/softmax.rs:77:44
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn softmax_f64(node_id: String, a: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/softmax.rs:81:44
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn softmax_f32(node_id: String, a: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/relu.rs:59:41
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn relu_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/relu.rs:63:41
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn relu_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/sigmoid.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn sigmoid_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/sigmoid.rs:67:44
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn sigmoid_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:36:58
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:36:78
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:40:58
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ktensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:40:78
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/run/mod.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn execute<T>(node: Arc<Graph<T>>, state: &Context<T>, variables: &Context<T>) -> Tensor<T> where T: Copy {
[INFO] [stdout]   |                             ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/run/mod.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn train<T>(node: Arc<Graph<T>>, state: &mut Context<T>, variables: &Context<T>, history: &mut Context<T>, rate: T) where T: Copy {
[INFO] [stdout]    |                           ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/mnist.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn read_u8(reader: &mut Read) -> u8 {
[INFO] [stdout]   |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/mnist.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn read_u32(reader: &mut Read) -> u32 {
[INFO] [stdout]    |                          ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/mnist.rs:121:29
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let mut graph_head: Arc<Graph<f32>> = input_x.clone();
[INFO] [stdout]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/xor.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut graph_head: Arc<Graph<f64>> = input_x.clone();
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/mnist.rs:17:56
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(reason) => panic!("failed to read u8: {}", Error::description(&reason)),
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/mnist.rs:30:57
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Err(reason) => panic!("failed to read u32: {}", Error::description(&reason)),
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/mnist.rs:37:79
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Err(reason) => panic!("failed to open {}: {}", labels_path.display(), Error::description(&reason)),
[INFO] [stdout]    |                                                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/mnist.rs:41:77
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Err(reason) => panic!("failed to open {}: {}", data_path.display(), Error::description(&reason)),
[INFO] [stdout]    |                                                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/mnist.rs:67:73
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Err(reason) => panic!("failed to read data byte array: {}", Error::description(&reason)),
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/mnist.rs:72:75
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Err(reason) => panic!("failed to read labels byte array: {}", Error::description(&reason)),
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context/mod.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from_vec(context_vec: Vec<(&Graph<T>, Tensor<T>)>) -> Context<T> {
[INFO] [stdout]    |                                        ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     param: Vec<Arc<Graph<T>>>,
[INFO] [stdout]    |                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:29:164
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...sor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, calc_dim: fn(Vec<Vec2>) -> Vec2) -> Node<T> where T: Copy {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/junction.rs:39:169
[INFO] [stdout]    |
[INFO] [stdout] 39 | ...sor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, dimension: Vec2) -> Node<T> {
[INFO] [stdout]    |                                                   ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/dot.rs:23:39
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn dot<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Mul<Output=T> + Add<Output=T> + Copy {
[INFO] [stdout]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/dot.rs:23:57
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn dot<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Mul<Output=T> + Add<Output=T> + Copy {
[INFO] [stdout]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/add.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn add<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Copy + Mul<Output=T> + Add<Output=T> {
[INFO] [stdout]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/add.rs:46:57
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn add<T>(node_id: String, a: Arc<Graph<T>>, b: Arc<Graph<T>>) -> Node<T> where T: Copy + Mul<Output=T> + Add<Output=T> {
[INFO] [stdout]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/softmax.rs:77:44
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn softmax_f64(node_id: String, a: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/softmax.rs:81:44
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn softmax_f32(node_id: String, a: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/relu.rs:59:41
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn relu_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/relu.rs:63:41
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn relu_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/sigmoid.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn sigmoid_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/op/sigmoid.rs:67:44
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn sigmoid_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:36:58
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:36:78
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:40:58
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cost/softxentropy.rs:40:78
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/run/mod.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn execute<T>(node: Arc<Graph<T>>, state: &Context<T>, variables: &Context<T>) -> Tensor<T> where T: Copy {
[INFO] [stdout]   |                             ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/run/mod.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn train<T>(node: Arc<Graph<T>>, state: &mut Context<T>, variables: &Context<T>, history: &mut Context<T>, rate: T) where T: Copy {
[INFO] [stdout]    |                           ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_u8`
[INFO] [stdout]  --> tests/mnist.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn read_u8(reader: &mut Read) -> u8 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "ad38dd9f17204efaad8cd8b1d4d060a4a63e9ceb89897ac4adaa14434dc5a43f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad38dd9f17204efaad8cd8b1d4d060a4a63e9ceb89897ac4adaa14434dc5a43f", kill_on_drop: false }`
[INFO] [stdout] ad38dd9f17204efaad8cd8b1d4d060a4a63e9ceb89897ac4adaa14434dc5a43f
