[INFO] fetching crate len-trait 0.6.1...
[INFO] testing len-trait-0.6.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate len-trait 0.6.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate len-trait 0.6.1
[INFO] finished tweaking crates.io crate len-trait 0.6.1
[INFO] tweaked toml for crates.io crate len-trait 0.6.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate len-trait 0.6.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b893da5cebb0a0bedc9e1d5559f5a9c0995170f7096b6344dd56d0b24a3096ca
[INFO] running `Command { std: "docker" "start" "-a" "b893da5cebb0a0bedc9e1d5559f5a9c0995170f7096b6344dd56d0b24a3096ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b893da5cebb0a0bedc9e1d5559f5a9c0995170f7096b6344dd56d0b24a3096ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b893da5cebb0a0bedc9e1d5559f5a9c0995170f7096b6344dd56d0b24a3096ca", kill_on_drop: false }`
[INFO] [stdout] b893da5cebb0a0bedc9e1d5559f5a9c0995170f7096b6344dd56d0b24a3096ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4bb334493db43de1e4b7d55127209ed2698d562fc550dac738e1980763136e6
[INFO] running `Command { std: "docker" "start" "-a" "c4bb334493db43de1e4b7d55127209ed2698d562fc550dac738e1980763136e6", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling len-trait v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `bit-set`
[INFO] [stdout]   --> src/lib.rs:81:7
[INFO] [stdout]    |
[INFO] [stdout] 81 | #[cfg(feature = "bit-set")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `bit-set` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `bit-vec`
[INFO] [stdout]   --> src/lib.rs:84:7
[INFO] [stdout]    |
[INFO] [stdout] 84 | #[cfg(feature = "bit-vec")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `bit-vec` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `blist`
[INFO] [stdout]   --> src/lib.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[cfg(feature = "blist")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `blist` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `enum-set`
[INFO] [stdout]   --> src/lib.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | #[cfg(feature = "enum-set")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `enum-set` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `interval-heap`
[INFO] [stdout]   --> src/lib.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[cfg(feature = "interval-heap")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `interval-heap` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `linear-map`
[INFO] [stdout]   --> src/lib.rs:96:7
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg(feature = "linear-map")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `linear-map` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `linked-hash-map`
[INFO] [stdout]   --> src/lib.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | #[cfg(feature = "linked-hash-map")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `linked-hash-map` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `lru-cache`
[INFO] [stdout]    --> src/lib.rs:102:7
[INFO] [stdout]     |
[INFO] [stdout] 102 | #[cfg(feature = "lru-cache")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]     = help: consider adding `lru-cache` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `vec_map`
[INFO] [stdout]    --> src/lib.rs:105:7
[INFO] [stdout]     |
[INFO] [stdout] 105 | #[cfg(feature = "vec_map")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]     = help: consider adding `vec_map` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]   --> src/len.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | #[cfg_attr(feature = "cargo-clippy", allow(len_without_is_empty))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `cargo-clippy` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/capacity.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |         if Len::is_empty(self) {
[INFO] [stdout]     |            ^^^
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 166 |         if <dyn Len>::is_empty(self) {
[INFO] [stdout]     |            ++++    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "c4bb334493db43de1e4b7d55127209ed2698d562fc550dac738e1980763136e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4bb334493db43de1e4b7d55127209ed2698d562fc550dac738e1980763136e6", kill_on_drop: false }`
[INFO] [stdout] c4bb334493db43de1e4b7d55127209ed2698d562fc550dac738e1980763136e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5482a7d8e62ec017e61fbc46f068d21a062f4f35652701c969129e63de4c549
[INFO] running `Command { std: "docker" "start" "-a" "f5482a7d8e62ec017e61fbc46f068d21a062f4f35652701c969129e63de4c549", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling len-trait v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `bit-set`
[INFO] [stdout]   --> src/lib.rs:81:7
[INFO] [stdout]    |
[INFO] [stdout] 81 | #[cfg(feature = "bit-set")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `bit-set` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `bit-vec`
[INFO] [stdout]   --> src/lib.rs:84:7
[INFO] [stdout]    |
[INFO] [stdout] 84 | #[cfg(feature = "bit-vec")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `bit-vec` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `blist`
[INFO] [stdout]   --> src/lib.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[cfg(feature = "blist")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `blist` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `enum-set`
[INFO] [stdout]   --> src/lib.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | #[cfg(feature = "enum-set")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `enum-set` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `interval-heap`
[INFO] [stdout]   --> src/lib.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[cfg(feature = "interval-heap")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `interval-heap` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `linear-map`
[INFO] [stdout]   --> src/lib.rs:96:7
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg(feature = "linear-map")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `linear-map` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `linked-hash-map`
[INFO] [stdout]   --> src/lib.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | #[cfg(feature = "linked-hash-map")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `linked-hash-map` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `lru-cache`
[INFO] [stdout]    --> src/lib.rs:102:7
[INFO] [stdout]     |
[INFO] [stdout] 102 | #[cfg(feature = "lru-cache")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]     = help: consider adding `lru-cache` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `vec_map`
[INFO] [stdout]    --> src/lib.rs:105:7
[INFO] [stdout]     |
[INFO] [stdout] 105 | #[cfg(feature = "vec_map")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]     = help: consider adding `vec_map` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]   --> src/len.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | #[cfg_attr(feature = "cargo-clippy", allow(len_without_is_empty))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `cargo-clippy` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/capacity.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |         if Len::is_empty(self) {
[INFO] [stdout]     |            ^^^
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 166 |         if <dyn Len>::is_empty(self) {
[INFO] [stdout]     |            ++++    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `bit-set`
[INFO] [stdout]   --> src/lib.rs:81:7
[INFO] [stdout]    |
[INFO] [stdout] 81 | #[cfg(feature = "bit-set")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `bit-set` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:76:24
[INFO] [stdout]    |
[INFO] [stdout] 76 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unexpected_cfgs)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `bit-vec`
[INFO] [stdout]   --> src/lib.rs:84:7
[INFO] [stdout]    |
[INFO] [stdout] 84 | #[cfg(feature = "bit-vec")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `bit-vec` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `blist`
[INFO] [stdout]   --> src/lib.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[cfg(feature = "blist")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `blist` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `enum-set`
[INFO] [stdout]   --> src/lib.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | #[cfg(feature = "enum-set")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `enum-set` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `interval-heap`
[INFO] [stdout]   --> src/lib.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[cfg(feature = "interval-heap")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `interval-heap` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `linear-map`
[INFO] [stdout]   --> src/lib.rs:96:7
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg(feature = "linear-map")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `linear-map` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `linked-hash-map`
[INFO] [stdout]   --> src/lib.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | #[cfg(feature = "linked-hash-map")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `linked-hash-map` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `lru-cache`
[INFO] [stdout]    --> src/lib.rs:102:7
[INFO] [stdout]     |
[INFO] [stdout] 102 | #[cfg(feature = "lru-cache")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]     = help: consider adding `lru-cache` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `vec_map`
[INFO] [stdout]    --> src/lib.rs:105:7
[INFO] [stdout]     |
[INFO] [stdout] 105 | #[cfg(feature = "vec_map")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]     = help: consider adding `vec_map` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]   --> src/len.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | #[cfg_attr(feature = "cargo-clippy", allow(len_without_is_empty))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `default`, `nightly`, and `std`
[INFO] [stdout]    = help: consider adding `cargo-clippy` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/capacity.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |         if Len::is_empty(self) {
[INFO] [stdout]     |            ^^^
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 166 |         if <dyn Len>::is_empty(self) {
[INFO] [stdout]     |            ++++    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `len-trait` (lib test) due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "f5482a7d8e62ec017e61fbc46f068d21a062f4f35652701c969129e63de4c549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5482a7d8e62ec017e61fbc46f068d21a062f4f35652701c969129e63de4c549", kill_on_drop: false }`
[INFO] [stdout] f5482a7d8e62ec017e61fbc46f068d21a062f4f35652701c969129e63de4c549