[INFO] fetching crate aad 0.9.0...
[INFO] testing aad-0.9.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate aad 0.9.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate aad 0.9.0
[INFO] finished tweaking crates.io crate aad 0.9.0
[INFO] tweaked toml for crates.io crate aad 0.9.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate aad 0.9.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate aad 0.9.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dwrote v0.11.2
[INFO] [stderr]   Downloaded RustQuant_utils v0.4.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.15
[INFO] [stderr]   Downloaded aad_derive v0.9.0
[INFO] [stderr]   Downloaded errorfunctions v0.2.0
[INFO] [stderr]   Downloaded RustQuant_autodiff v0.4.0
[INFO] [stderr]   Downloaded matrixmultiply v0.3.9
[INFO] [stderr]   Downloaded font-kit v0.14.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3463a2904ba9621528390baed36678c55172267c10ac2500a485bfd141039c12
[INFO] running `Command { std: "docker" "start" "-a" "3463a2904ba9621528390baed36678c55172267c10ac2500a485bfd141039c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3463a2904ba9621528390baed36678c55172267c10ac2500a485bfd141039c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3463a2904ba9621528390baed36678c55172267c10ac2500a485bfd141039c12", kill_on_drop: false }`
[INFO] [stdout] 3463a2904ba9621528390baed36678c55172267c10ac2500a485bfd141039c12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 792a7765694323218b974e0d60e6ed61b193f60faccf71655224875f62cf3bec
[INFO] running `Command { std: "docker" "start" "-a" "792a7765694323218b974e0d60e6ed61b193f60faccf71655224875f62cf3bec", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling aad v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/variable.rs:218:5
[INFO] [stdout]     |
[INFO] [stdout] 218 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/variable.rs:239:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn create_variable(&self, value: F) -> Variable<F> {
[INFO] [stdout]    |                            ^^^^^               ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn create_variable(&self, value: F) -> Variable<'_, F> {
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:48:45
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<F>; N] {
[INFO] [stdout]    |                                             ^^^^^                       ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<'_, F>; N] {
[INFO] [stdout]    |                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<F>> {
[INFO] [stdout]    |                                  ^^^^^ the lifetime is elided here            ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<'_, F>> {
[INFO] [stdout]    |                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "792a7765694323218b974e0d60e6ed61b193f60faccf71655224875f62cf3bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792a7765694323218b974e0d60e6ed61b193f60faccf71655224875f62cf3bec", kill_on_drop: false }`
[INFO] [stdout] 792a7765694323218b974e0d60e6ed61b193f60faccf71655224875f62cf3bec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35d53087f369fcb1a72f28b3e8d7b3de26465c2594fc56095eb8f710b371c1f0
[INFO] running `Command { std: "docker" "start" "-a" "35d53087f369fcb1a72f28b3e8d7b3de26465c2594fc56095eb8f710b371c1f0", kill_on_drop: false }`
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/variable.rs:218:5
[INFO] [stdout]     |
[INFO] [stdout] 218 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/variable.rs:239:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn create_variable(&self, value: F) -> Variable<F> {
[INFO] [stdout]    |                            ^^^^^               ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn create_variable(&self, value: F) -> Variable<'_, F> {
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:48:45
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<F>; N] {
[INFO] [stdout]    |                                             ^^^^^                       ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<'_, F>; N] {
[INFO] [stdout]    |                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<F>> {
[INFO] [stdout]    |                                  ^^^^^ the lifetime is elided here            ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<'_, F>> {
[INFO] [stdout]    |                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aad v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/variable.rs:218:5
[INFO] [stdout]     |
[INFO] [stdout] 218 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/variable.rs:239:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn create_variable(&self, value: F) -> Variable<F> {
[INFO] [stdout]    |                            ^^^^^               ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn create_variable(&self, value: F) -> Variable<'_, F> {
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:48:45
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<F>; N] {
[INFO] [stdout]    |                                             ^^^^^                       ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<'_, F>; N] {
[INFO] [stdout]    |                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tape.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<F>> {
[INFO] [stdout]    |                                  ^^^^^ the lifetime is elided here            ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<'_, F>> {
[INFO] [stdout]    |                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `Command { std: "docker" "inspect" "35d53087f369fcb1a72f28b3e8d7b3de26465c2594fc56095eb8f710b371c1f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35d53087f369fcb1a72f28b3e8d7b3de26465c2594fc56095eb8f710b371c1f0", kill_on_drop: false }`
[INFO] [stdout] 35d53087f369fcb1a72f28b3e8d7b3de26465c2594fc56095eb8f710b371c1f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 490edaae12e45e0a1566b31646fdd58cab9b2adf0c31d736fb70251eb34ca8c2
[INFO] running `Command { std: "docker" "start" "-a" "490edaae12e45e0a1566b31646fdd58cab9b2adf0c31d736fb70251eb34ca8c2", kill_on_drop: false }`
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]    --> src/variable.rs:218:5
[INFO] [stderr]     |
[INFO] [stderr] 218 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]    --> src/variable.rs:239:5
[INFO] [stderr]     |
[INFO] [stderr] 239 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/tape.rs:32:28
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn create_variable(&self, value: F) -> Variable<F> {
[INFO] [stderr]    |                            ^^^^^               ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn create_variable(&self, value: F) -> Variable<'_, F> {
[INFO] [stderr]    |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/tape.rs:48:45
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<F>; N] {
[INFO] [stderr]    |                                             ^^^^^                       ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                                             |
[INFO] [stderr]    |                                             the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn create_variables<const N: usize>(&self, values: &[F; N]) -> [Variable<'_, F>; N] {
[INFO] [stderr]    |                                                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/tape.rs:53:34
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<F>> {
[INFO] [stderr]    |                                  ^^^^^ the lifetime is elided here            ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn create_variables_iter(&self, values: &[F]) -> impl Iterator<Item = Variable<'_, F>> {
[INFO] [stderr]    |                                                                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: `aad` (lib) generated 5 warnings (run `cargo fix --lib -p aad` to apply 5 suggestions)
[INFO] [stderr] warning: `aad` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/aad-55d5c78df411c8ef)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test overload::sum::tests::test_sum ... ok
[INFO] [stdout] test overload::sum::tests::test_sum_empty2 ... ok
[INFO] [stdout] test overload::sum::tests::test_sum_empty ... ok
[INFO] [stdout] test tests::test_add ... ok
[INFO] [stdout] test tests::test_add_assign_var ... ok
[INFO] [stdout] test tests::test_add_assign_scalar ... ok
[INFO] [stdout] test tests::test_add_scalar ... ok
[INFO] [stdout] test tests::test_combined_operations ... ok
[INFO] [stdout] test tests::test_combined_operations2 ... ok
[INFO] [stdout] test tests::test_cosh ... ok
[INFO] [stdout] test tests::test_cos ... ok
[INFO] [stdout] test tests::test_div ... ok
[INFO] [stdout] test tests::test_div_assign_var ... ok
[INFO] [stdout] test tests::test_div_scalar_reverse ... ok
[INFO] [stdout] test tests::test_exp ... ok
[INFO] [stdout] test tests::test_i128 ... ok
[INFO] [stdout] test tests::test_i32 ... ok
[INFO] [stdout] test tests::test_i64 ... ok
[INFO] [stdout] test tests::test_i8 ... ok
[INFO] [stdout] test tests::test_linear_scalar ... ok
[INFO] [stdout] test tests::test_mul ... ok
[INFO] [stdout] test tests::test_mul_assign_var ... ok
[INFO] [stdout] test tests::test_mul_scalar ... ok
[INFO] [stdout] test tests::test_recip ... ok
[INFO] [stdout] test tests::test_sin ... ok
[INFO] [stdout] test tests::test_combined ... ok
[INFO] [stdout] test tests::test_sub_assign_scalar ... ok
[INFO] [stdout] test tests::test_sub_from_scalar ... ok
[INFO] [stdout] test tests::test_sub_scalar ... ok
[INFO] [stdout] test tests::test_tan ... ok
[INFO] [stdout] test tests::test_tanh ... ok
[INFO] [stdout] test tests::test_neg ... ok
[INFO] [stdout] test tests::test_sqrt ... ok
[INFO] [stdout] test tests::test_powf ... ok
[INFO] [stdout] test tests::test_sinh ... ok
[INFO] [stdout] test tests::test_sub ... ok
[INFO] [stdout] test tests::test_sub_assign_var ... ok
[INFO] [stdout] test tests::test_u128 ... ok
[INFO] [stdout] test tests::test_u16 ... ok
[INFO] [stdout] test tests::test_u32 ... ok
[INFO] [stdout] test tests::test_u64 ... ok
[INFO] [stdout] test tests::test_usize ... ok
[INFO] [stdout] test variable::tests::test_compute_second_gradients ... ok
[INFO] [stdout] test tests::test_u8 ... ok
[INFO] [stdout] test tests::test_div_assign_scalar ... ok
[INFO] [stdout] test tests::test_div_scalar ... ok
[INFO] [stdout] test tests::test_mul_assign_scalar ... ok
[INFO] [stdout] test tape::tests::test_create_variables ... ok
[INFO] [stdout] test tests::test_i16 ... ok
[INFO] [stdout] test tests::test_isize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests aad
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "490edaae12e45e0a1566b31646fdd58cab9b2adf0c31d736fb70251eb34ca8c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "490edaae12e45e0a1566b31646fdd58cab9b2adf0c31d736fb70251eb34ca8c2", kill_on_drop: false }`
[INFO] [stdout] 490edaae12e45e0a1566b31646fdd58cab9b2adf0c31d736fb70251eb34ca8c2
