[INFO] fetching crate ktensor 0.1.0...
[INFO] checking ktensor-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate ktensor 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ktensor 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a20e3cd408ed5ebf72be11390427a907ef7919a8bce226dc63db2b55fb9d6c0d
[INFO] running `"docker" "start" "-a" "a20e3cd408ed5ebf72be11390427a907ef7919a8bce226dc63db2b55fb9d6c0d"`
[INFO] [stderr]     Checking ktensor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context/mod.rs:26:40
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn from_vec(context_vec: Vec<(&Graph<T>, Tensor<T>)>) -> Context<T> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node/junction.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |     param: Vec<Arc<Graph<T>>>,
[INFO] [stderr]    |                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node/junction.rs:29:164
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new(node_id: String, operation: fn(Vec<Tensor<T>>) -> Tensor<T>, operation_prime: fn(&Tensor<T>, Vec<&Tensor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, calc_dim: fn(Vec<Vec2>) -> Vec2) -> Node<T> where T: Copy {
[INFO] [stderr]    |                                                                                                                                                                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node/junction.rs:39:169
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn with_dim(node_id: String, operation: fn(Vec<Tensor<T>>) -> Tensor<T>, operation_prime: fn(&Tensor<T>, Vec<&Tensor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, dimension: Vec2) -> Node<T> {
[INFO] [stderr]    |                                                                                                                                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/dot.rs:23:39
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/dot.rs:23:57
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/add.rs:46:39
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/add.rs:46:57
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/softmax.rs:77:44
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn softmax_f64(node_id: String, a: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/softmax.rs:81:44
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn softmax_f32(node_id: String, a: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/relu.rs:59:41
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn relu_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/relu.rs:63:41
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn relu_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/sigmoid.rs:63:44
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn sigmoid_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/sigmoid.rs:67:44
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn sigmoid_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:36:58
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:36:78
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:40:58
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:40:78
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/run/mod.rs:7:29
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn execute<T>(node: Arc<Graph<T>>, state: &Context<T>, variables: &Context<T>) -> Tensor<T> where T: Copy {
[INFO] [stderr]   |                             ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/run/mod.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                           ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context/mod.rs:26:40
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn from_vec(context_vec: Vec<(&Graph<T>, Tensor<T>)>) -> Context<T> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node/junction.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |     param: Vec<Arc<Graph<T>>>,
[INFO] [stderr]    |                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node/junction.rs:29:164
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new(node_id: String, operation: fn(Vec<Tensor<T>>) -> Tensor<T>, operation_prime: fn(&Tensor<T>, Vec<&Tensor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, calc_dim: fn(Vec<Vec2>) -> Vec2) -> Node<T> where T: Copy {
[INFO] [stderr]    |                                                                                                                                                                    ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node/junction.rs:39:169
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn with_dim(node_id: String, operation: fn(Vec<Tensor<T>>) -> Tensor<T>, operation_prime: fn(&Tensor<T>, Vec<&Tensor<T>>) -> Vec<Tensor<T>>, parameter: Vec<Arc<Graph<T>>>, dimension: Vec2) -> Node<T> {
[INFO] [stderr]    |                                                                                                                                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/dot.rs:23:39
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/dot.rs:23:57
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/add.rs:46:39
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                       ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/add.rs:46:57
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                                                         ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/softmax.rs:77:44
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn softmax_f64(node_id: String, a: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/softmax.rs:81:44
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn softmax_f32(node_id: String, a: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/relu.rs:59:41
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn relu_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/relu.rs:63:41
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn relu_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/sigmoid.rs:63:44
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn sigmoid_f64(node_id: String, z: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/op/sigmoid.rs:67:44
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn sigmoid_f32(node_id: String, z: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:36:58
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:36:78
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn softmax_cross_entropy_f64(node_id: String, s: Arc<Graph<f64>>, y: Arc<Graph<f64>>) -> Node<f64> {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:40:58
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                                          ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cost/softxentropy.rs:40:78
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn softmax_cross_entropy_f32(node_id: String, s: Arc<Graph<f32>>, y: Arc<Graph<f32>>) -> Node<f32> {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/run/mod.rs:7:29
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn execute<T>(node: Arc<Graph<T>>, state: &Context<T>, variables: &Context<T>) -> Tensor<T> where T: Copy {
[INFO] [stderr]   |                             ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/run/mod.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 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] [stderr]    |                           ^^^^^^^^ help: use `dyn`: `dyn Graph<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/xor.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut graph_head: Arc<Graph<f64>> = input_x.clone();
[INFO] [stderr]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f64>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/mnist.rs:9:25
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn read_u8(reader: &mut Read) -> u8 {
[INFO] [stderr]   |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/mnist.rs:22:26
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn read_u32(reader: &mut Read) -> u32 {
[INFO] [stderr]    |                          ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/mnist.rs:121:29
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let mut graph_head: Arc<Graph<f32>> = input_x.clone();
[INFO] [stderr]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn Graph<f32>`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_u8`
[INFO] [stderr]  --> tests/mnist.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn read_u8(reader: &mut Read) -> u8 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `"docker" "inspect" "a20e3cd408ed5ebf72be11390427a907ef7919a8bce226dc63db2b55fb9d6c0d"`
[INFO] running `"docker" "rm" "-f" "a20e3cd408ed5ebf72be11390427a907ef7919a8bce226dc63db2b55fb9d6c0d"`
[INFO] [stdout] a20e3cd408ed5ebf72be11390427a907ef7919a8bce226dc63db2b55fb9d6c0d