[INFO] cloning repository https://github.com/takenta/feedforward_demo [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takenta/feedforward_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Ffeedforward_demo", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Ffeedforward_demo'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fac08e6bb2bc9817edfe9d2789a8787bac3ef699 [INFO] testing takenta/feedforward_demo against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Ffeedforward_demo" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/takenta/feedforward_demo on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/takenta/feedforward_demo [INFO] finished tweaking git repo https://github.com/takenta/feedforward_demo [INFO] tweaked toml for git repo https://github.com/takenta/feedforward_demo written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/takenta/feedforward_demo already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 174e84887fe6eb4ea01c5cc44b92eb53eb38787f8020fd00fd1cb1460b1571e9 [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" "174e84887fe6eb4ea01c5cc44b92eb53eb38787f8020fd00fd1cb1460b1571e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "174e84887fe6eb4ea01c5cc44b92eb53eb38787f8020fd00fd1cb1460b1571e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "174e84887fe6eb4ea01c5cc44b92eb53eb38787f8020fd00fd1cb1460b1571e9", kill_on_drop: false }` [INFO] [stdout] 174e84887fe6eb4ea01c5cc44b92eb53eb38787f8020fd00fd1cb1460b1571e9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4254a4ba13e9ba41af44d86f1107a984444cf94e878480425c8856c784705290 [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" "4254a4ba13e9ba41af44d86f1107a984444cf94e878480425c8856c784705290", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.10 [INFO] [stderr] Compiling rand v0.3.14 [INFO] [stderr] Compiling deep_learning v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tools/feed_forward.rs:7:19 [INFO] [stdout] | [INFO] [stdout] 7 | func: &'a Box DualNumber>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tools/feed_forward.rs:11:81 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn new(weights: Vec, len_row: usize, bias: Vec, func: &'a Box DualNumber>) -> FeedForward<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tools/feed_forward.rs:37:122 [INFO] [stdout] | [INFO] [stdout] 37 | ...ror: &'b Box DualNumber>) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:30:28 [INFO] [stdout] | [INFO] [stdout] 30 | let func_hide_rel: Box DualNumber> = Box::new(move |x: DualNumber| (DualNumber::new(1.0) - (-x).exp()).recip()); //... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:31:26 [INFO] [stdout] | [INFO] [stdout] 31 | let func_output: Box DualNumber> = Box::new(move |x: DualNumber| x); // 恒等写像 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:39:25 [INFO] [stdout] | [INFO] [stdout] 39 | let error_func: Box DualNumber> = Box::new(move |&output, &teacher| (output-teacher).powf(2.0) * Dual... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.31s [INFO] running `Command { std: "docker" "inspect" "4254a4ba13e9ba41af44d86f1107a984444cf94e878480425c8856c784705290", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4254a4ba13e9ba41af44d86f1107a984444cf94e878480425c8856c784705290", kill_on_drop: false }` [INFO] [stdout] 4254a4ba13e9ba41af44d86f1107a984444cf94e878480425c8856c784705290 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 91ef8a66f691a874d38f2aff9eec0f5bcb727207a7725ccffa4c97f7eac49d81 [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" "91ef8a66f691a874d38f2aff9eec0f5bcb727207a7725ccffa4c97f7eac49d81", kill_on_drop: false }` [INFO] [stderr] Compiling deep_learning v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tools/feed_forward.rs:7:19 [INFO] [stdout] | [INFO] [stdout] 7 | func: &'a Box DualNumber>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tools/feed_forward.rs:11:81 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn new(weights: Vec, len_row: usize, bias: Vec, func: &'a Box DualNumber>) -> FeedForward<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tools/feed_forward.rs:37:122 [INFO] [stdout] | [INFO] [stdout] 37 | ...ror: &'b Box DualNumber>) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:30:28 [INFO] [stdout] | [INFO] [stdout] 30 | let func_hide_rel: Box DualNumber> = Box::new(move |x: DualNumber| (DualNumber::new(1.0) - (-x).exp()).recip()); //... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:31:26 [INFO] [stdout] | [INFO] [stdout] 31 | let func_output: Box DualNumber> = Box::new(move |x: DualNumber| x); // 恒等写像 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:39:25 [INFO] [stdout] | [INFO] [stdout] 39 | let error_func: Box DualNumber> = Box::new(move |&output, &teacher| (output-teacher).powf(2.0) * Dual... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.85s [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "91ef8a66f691a874d38f2aff9eec0f5bcb727207a7725ccffa4c97f7eac49d81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91ef8a66f691a874d38f2aff9eec0f5bcb727207a7725ccffa4c97f7eac49d81", kill_on_drop: false }` [INFO] [stdout] 91ef8a66f691a874d38f2aff9eec0f5bcb727207a7725ccffa4c97f7eac49d81 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e4e5f84469ecd46d18d41d117c2cddfa7f78c93e06b46fcadddc56e21e66114c [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" "e4e5f84469ecd46d18d41d117c2cddfa7f78c93e06b46fcadddc56e21e66114c", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/tools/feed_forward.rs:7:19 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 7 | func: &'a Box DualNumber>, [INFO] [stdout] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/tools/feed_forward.rs:11:81 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn new(weights: Vec, len_row: usize, bias: Vec, func: &'a Box DualNumber>) -> FeedForward<'a> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/tools/feed_forward.rs:37:122 [INFO] [stderr] | [INFO] [stderr] 37 | ...ror: &'b Box DualNumber>) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber` [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:30:28 [INFO] [stderr] | [INFO] [stderr] 30 | let func_hide_rel: Box DualNumber> = Box::new(move |x: DualNumber| (DualNumber::new(1.0) - (-x).exp()).recip()); //... [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:31:26 [INFO] [stderr] | [INFO] [stderr] 31 | let func_output: Box DualNumber> = Box::new(move |x: DualNumber| x); // 恒等写像 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber` [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:39:25 [INFO] [stderr] | [INFO] [stderr] 39 | let error_func: Box DualNumber> = Box::new(move |&output, &teacher| (output-teacher).powf(2.0) * Dual... [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber` [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `deep_learning` (bin "deep_learning" test) generated 6 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/deep_learning-2836ea09cdfd81e8) [INFO] running `Command { std: "docker" "inspect" "e4e5f84469ecd46d18d41d117c2cddfa7f78c93e06b46fcadddc56e21e66114c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e4e5f84469ecd46d18d41d117c2cddfa7f78c93e06b46fcadddc56e21e66114c", kill_on_drop: false }` [INFO] [stdout] e4e5f84469ecd46d18d41d117c2cddfa7f78c93e06b46fcadddc56e21e66114c