[INFO] fetching crate fp-core 0.1.9...
[INFO] testing fp-core-0.1.9 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate fp-core 0.1.9 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate fp-core 0.1.9 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fp-core 0.1.9
[INFO] finished tweaking crates.io crate fp-core 0.1.9
[INFO] tweaked toml for crates.io crate fp-core 0.1.9 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47eb98371d135b0fac8d975dfa8cc24816f1687dc43ec4d98758cd87fd7d410f
[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" "47eb98371d135b0fac8d975dfa8cc24816f1687dc43ec4d98758cd87fd7d410f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47eb98371d135b0fac8d975dfa8cc24816f1687dc43ec4d98758cd87fd7d410f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47eb98371d135b0fac8d975dfa8cc24816f1687dc43ec4d98758cd87fd7d410f", kill_on_drop: false }`
[INFO] [stdout] 47eb98371d135b0fac8d975dfa8cc24816f1687dc43ec4d98758cd87fd7d410f
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5bd0ef5872a6f583186c9a4ac806606652be6c1d28e46e6b02ca6c02c1f5cfa9
[INFO] running `Command { std: "docker" "start" "-a" "5bd0ef5872a6f583186c9a4ac806606652be6c1d28e46e6b02ca6c02c1f5cfa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling fp-core v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/apply.rs:4:47
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<S as HKT<B>>::Current) -> B`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[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/apply.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Apply<B>: Functor<B> + HKT<Box<Fn(<Self as HKT<B>>::Current) -> B>> {
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<Self as HKT<B>>::Current) -> B`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[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/lens.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fn over(s: &S, f: &Fn(Option<&A>) -> A) -> S {
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Option<&A>) -> A`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/monoid.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/semigroup.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/empty.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn empty() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 31 |         Vec::empty()
[INFO] [stdout]    |         ------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/empty.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn empty() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 37 |         String::empty()
[INFO] [stdout]    |         --------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]  --> src/apply.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "5bd0ef5872a6f583186c9a4ac806606652be6c1d28e46e6b02ca6c02c1f5cfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bd0ef5872a6f583186c9a4ac806606652be6c1d28e46e6b02ca6c02c1f5cfa9", kill_on_drop: false }`
[INFO] [stdout] 5bd0ef5872a6f583186c9a4ac806606652be6c1d28e46e6b02ca6c02c1f5cfa9
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6be960c8f9ef19527d5ee159f36d4c7dc4d7873bc26ed463c120726231a34f4b
[INFO] running `Command { std: "docker" "start" "-a" "6be960c8f9ef19527d5ee159f36d4c7dc4d7873bc26ed463c120726231a34f4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fp-core v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/apply.rs:4:47
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<S as HKT<B>>::Current) -> B`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[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/apply.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Apply<B>: Functor<B> + HKT<Box<Fn(<Self as HKT<B>>::Current) -> B>> {
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<Self as HKT<B>>::Current) -> B`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[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/lens.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fn over(s: &S, f: &Fn(Option<&A>) -> A) -> S {
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Option<&A>) -> A`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/monoid.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/semigroup.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/empty.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn empty() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 31 |         Vec::empty()
[INFO] [stdout]    |         ------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/empty.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn empty() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 37 |         String::empty()
[INFO] [stdout]    |         --------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]  --> src/apply.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/apply.rs:4:47
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<S as HKT<B>>::Current) -> B`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[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/apply.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Apply<B>: Functor<B> + HKT<Box<Fn(<Self as HKT<B>>::Current) -> B>> {
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<Self as HKT<B>>::Current) -> B`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[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/lens.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fn over(s: &S, f: &Fn(Option<&A>) -> A) -> S {
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Option<&A>) -> A`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/monoid.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/semigroup.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/empty.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn empty() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 31 |         Vec::empty()
[INFO] [stdout]    |         ------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/empty.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn empty() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 37 |         String::empty()
[INFO] [stdout]    |         --------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]  --> src/apply.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Applicator<B, S> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stdout]   |                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "6be960c8f9ef19527d5ee159f36d4c7dc4d7873bc26ed463c120726231a34f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be960c8f9ef19527d5ee159f36d4c7dc4d7873bc26ed463c120726231a34f4b", kill_on_drop: false }`
[INFO] [stdout] 6be960c8f9ef19527d5ee159f36d4c7dc4d7873bc26ed463c120726231a34f4b
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 54c493fd962028aa4b2fc37ea51af5e9ffaaf2975ec1a06b50850a54ea63bbdf
[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" "54c493fd962028aa4b2fc37ea51af5e9ffaaf2975ec1a06b50850a54ea63bbdf", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/apply.rs:4:47
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stderr]   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<S as HKT<B>>::Current) -> B`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/apply.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub trait Apply<B>: Functor<B> + HKT<Box<Fn(<Self as HKT<B>>::Current) -> B>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<Self as HKT<B>>::Current) -> B`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lens.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fn over(s: &S, f: &Fn(Option<&A>) -> A) -> S {
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Option<&A>) -> A`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> src/monoid.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> src/semigroup.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/empty.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn empty() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] 31 |         Vec::empty()
[INFO] [stderr]    |         ------------ recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/empty.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn empty() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] 37 |         String::empty()
[INFO] [stderr]    |         --------------- recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]  --> src/apply.rs:4:23
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stderr]   |                       ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Applicator<B, S> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stderr]   |                    --
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/apply.rs:4:47
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stderr]   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<S as HKT<B>>::Current) -> B`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/apply.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub trait Apply<B>: Functor<B> + HKT<Box<Fn(<Self as HKT<B>>::Current) -> B>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(<Self as HKT<B>>::Current) -> B`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lens.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fn over(s: &S, f: &Fn(Option<&A>) -> A) -> S {
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Option<&A>) -> A`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> src/monoid.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> src/semigroup.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/empty.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn empty() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] 31 |         Vec::empty()
[INFO] [stderr]    |         ------------ recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/empty.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn empty() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] 37 |         String::empty()
[INFO] [stderr]    |         --------------- recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]  --> src/apply.rs:4:23
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Applicator<B, S: HKT<B>> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stderr]   |                       ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Applicator<B, S> = <S as HKT<Box<Fn(<S as HKT<B>>::Current) -> B>>>::Target;
[INFO] [stderr]   |                    --
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fp_core-4dbaaac408dd446d)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fp-core
[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] [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" "54c493fd962028aa4b2fc37ea51af5e9ffaaf2975ec1a06b50850a54ea63bbdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54c493fd962028aa4b2fc37ea51af5e9ffaaf2975ec1a06b50850a54ea63bbdf", kill_on_drop: false }`
[INFO] [stdout] 54c493fd962028aa4b2fc37ea51af5e9ffaaf2975ec1a06b50850a54ea63bbdf