[INFO] fetching crate fp-core 0.1.9... [INFO] testing fp-core-0.1.9 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate fp-core 0.1.9 into /workspace/builds/worker-2-tc2/source [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-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate fp-core 0.1.9 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 2 packages to latest compatible versions [INFO] [stderr] Adding itertools v0.8.2 (available: v0.14.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2fdfd2029724def0fb21c23661908be5a4dd3d681125743020c8995990c992b2 [INFO] running `Command { std: "docker" "start" "-a" "2fdfd2029724def0fb21c23661908be5a4dd3d681125743020c8995990c992b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2fdfd2029724def0fb21c23661908be5a4dd3d681125743020c8995990c992b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2fdfd2029724def0fb21c23661908be5a4dd3d681125743020c8995990c992b2", kill_on_drop: false }` [INFO] [stdout] 2fdfd2029724def0fb21c23661908be5a4dd3d681125743020c8995990c992b2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5eed0a914e5d548ce1edd3fdf665518ad7450b31bbc60bd2a6b50dc1521c740f [INFO] running `Command { std: "docker" "start" "-a" "5eed0a914e5d548ce1edd3fdf665518ad7450b31bbc60bd2a6b50dc1521c740f", 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: 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)]` (part of `#[warn(unused)]`) 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: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/apply.rs:6:42 [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stdout] | +++ [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> = >::Current) -> B>>>::Target; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stdout] | +++ [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] | ^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 2 | fn over(s: &S, f: &dyn Fn(Option<&A>) -> A) -> S { [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] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] = note: `#[warn(unconditional_recursion)]` on by default [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 in type aliases are not enforced [INFO] [stdout] --> src/apply.rs:4:23 [INFO] [stdout] | [INFO] [stdout] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stdout] | --^^^^^^ [INFO] [stdout] | | | [INFO] [stdout] | | will not be checked at usage sites of the type alias [INFO] [stdout] | help: remove this bound [INFO] [stdout] | [INFO] [stdout] = note: this is a known limitation of the type checker that may be lifted in a future edition. [INFO] [stdout] see issue #112792 for more information [INFO] [stdout] = note: `#[warn(type_alias_bounds)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.84s [INFO] running `Command { std: "docker" "inspect" "5eed0a914e5d548ce1edd3fdf665518ad7450b31bbc60bd2a6b50dc1521c740f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5eed0a914e5d548ce1edd3fdf665518ad7450b31bbc60bd2a6b50dc1521c740f", kill_on_drop: false }` [INFO] [stdout] 5eed0a914e5d548ce1edd3fdf665518ad7450b31bbc60bd2a6b50dc1521c740f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4424031c0e04c9e1a41c5e1108ec5f08db8114dd1011110641d5a184b6a7702a [INFO] running `Command { std: "docker" "start" "-a" "4424031c0e04c9e1a41c5e1108ec5f08db8114dd1011110641d5a184b6a7702a", kill_on_drop: false }` [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)]` (part of `#[warn(unused)]`) 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: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/apply.rs:6:42 [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stdout] | +++ [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> = >::Current) -> B>>>::Target; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stdout] | +++ [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] | ^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 2 | fn over(s: &S, f: &dyn Fn(Option<&A>) -> A) -> S { [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] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] = note: `#[warn(unconditional_recursion)]` on by default [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 in type aliases are not enforced [INFO] [stdout] --> src/apply.rs:4:23 [INFO] [stdout] | [INFO] [stdout] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stdout] | --^^^^^^ [INFO] [stdout] | | | [INFO] [stdout] | | will not be checked at usage sites of the type alias [INFO] [stdout] | help: remove this bound [INFO] [stdout] | [INFO] [stdout] = note: this is a known limitation of the type checker that may be lifted in a future edition. [INFO] [stdout] see issue #112792 for more information [INFO] [stdout] = note: `#[warn(type_alias_bounds)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling fp-core v0.1.9 (/opt/rustwide/workdir) [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)]` (part of `#[warn(unused)]`) 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: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/apply.rs:6:42 [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stdout] | +++ [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> = >::Current) -> B>>>::Target; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stdout] | +++ [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] | ^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 2 | fn over(s: &S, f: &dyn Fn(Option<&A>) -> A) -> S { [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] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] = note: `#[warn(unconditional_recursion)]` on by default [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 in type aliases are not enforced [INFO] [stdout] --> src/apply.rs:4:23 [INFO] [stdout] | [INFO] [stdout] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stdout] | --^^^^^^ [INFO] [stdout] | | | [INFO] [stdout] | | will not be checked at usage sites of the type alias [INFO] [stdout] | help: remove this bound [INFO] [stdout] | [INFO] [stdout] = note: this is a known limitation of the type checker that may be lifted in a future edition. [INFO] [stdout] see issue #112792 for more information [INFO] [stdout] = note: `#[warn(type_alias_bounds)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s [INFO] running `Command { std: "docker" "inspect" "4424031c0e04c9e1a41c5e1108ec5f08db8114dd1011110641d5a184b6a7702a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4424031c0e04c9e1a41c5e1108ec5f08db8114dd1011110641d5a184b6a7702a", kill_on_drop: false }` [INFO] [stdout] 4424031c0e04c9e1a41c5e1108ec5f08db8114dd1011110641d5a184b6a7702a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e2adf58e1cd88ce5615a238dda8739fde08c7f2b6c7fad5b60dec9b317f16664 [INFO] running `Command { std: "docker" "start" "-a" "e2adf58e1cd88ce5615a238dda8739fde08c7f2b6c7fad5b60dec9b317f16664", kill_on_drop: false }` [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)]` (part of `#[warn(unused)]`) 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: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/apply.rs:6:42 [INFO] [stderr] | [INFO] [stderr] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stderr] | [INFO] [stderr] 6 | pub trait Apply: Functor + HKT>::Current) -> B>> { [INFO] [stderr] | +++ [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> = >::Current) -> B>>>::Target; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stderr] | [INFO] [stderr] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stderr] | +++ [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] | ^^^^^^^^^^^^^^^^^^^ [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 [INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stderr] | [INFO] [stderr] 2 | fn over(s: &S, f: &dyn Fn(Option<&A>) -> A) -> S { [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] = help: a `loop` may express intention better if this is on purpose [INFO] [stderr] = note: `#[warn(unconditional_recursion)]` on by default [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 in type aliases are not enforced [INFO] [stderr] --> src/apply.rs:4:23 [INFO] [stderr] | [INFO] [stderr] 4 | type Applicator> = >::Current) -> B>>>::Target; [INFO] [stderr] | --^^^^^^ [INFO] [stderr] | | | [INFO] [stderr] | | will not be checked at usage sites of the type alias [INFO] [stderr] | help: remove this bound [INFO] [stderr] | [INFO] [stderr] = note: this is a known limitation of the type checker that may be lifted in a future edition. [INFO] [stderr] see issue #112792 for more information [INFO] [stderr] = note: `#[warn(type_alias_bounds)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `fp-core` (lib) generated 8 warnings (run `cargo fix --lib -p fp-core` to apply 6 suggestions) [INFO] [stderr] warning: `fp-core` (lib test) generated 8 warnings (8 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fp_core-eadae2a6ec7af070) [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] [stderr] Doc-tests fp_core [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" "e2adf58e1cd88ce5615a238dda8739fde08c7f2b6c7fad5b60dec9b317f16664", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e2adf58e1cd88ce5615a238dda8739fde08c7f2b6c7fad5b60dec9b317f16664", kill_on_drop: false }` [INFO] [stdout] e2adf58e1cd88ce5615a238dda8739fde08c7f2b6c7fad5b60dec9b317f16664