[INFO] fetching crate rats 0.0.1...
[INFO] testing rats-0.0.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate rats 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rats 0.0.1
[INFO] finished tweaking crates.io crate rats 0.0.1
[INFO] tweaked toml for crates.io crate rats 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rats 0.0.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `rats` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-sink-preview v0.2.2
[INFO] [stderr]   Downloaded futures-preview v0.2.2
[INFO] [stderr]   Downloaded futures-core-preview v0.2.3
[INFO] [stderr]   Downloaded futures-channel-preview v0.2.2
[INFO] [stderr]   Downloaded futures-util-preview v0.2.2
[INFO] [stderr]   Downloaded futures-stable-preview v0.2.3
[INFO] [stderr]   Downloaded futures-async-runtime-preview v0.2.3
[INFO] [stderr]   Downloaded futures-io-preview v0.2.2
[INFO] [stderr]   Downloaded futures-executor-preview v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084
[INFO] running `Command { std: "docker" "start" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `rats` (manifest) generated 1 warning
[INFO] [stderr]    Compiling either v1.19.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling futures-core-preview v0.2.3
[INFO] [stderr]    Compiling futures-channel-preview v0.2.2
[INFO] [stderr]    Compiling futures-io-preview v0.2.2
[INFO] [stderr]    Compiling futures-sink-preview v0.2.2
[INFO] [stderr]    Compiling futures-util-preview v0.2.2
[INFO] [stderr]    Compiling futures-executor-preview v0.2.2
[INFO] [stderr]    Compiling futures-stable-preview v0.2.3
[INFO] [stderr]    Compiling futures-async-runtime-preview v0.2.3
[INFO] [stderr]    Compiling futures-preview v0.2.2
[INFO] [stderr]    Compiling rats v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `tool_attributes` has been stable since `1.30.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::AndThen`
[INFO] [stdout]  --> src/instances/future.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::future::AndThen;
[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: `applicative::Applicative`
[INFO] [stdout]  --> src/instances/result.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use applicative::Applicative;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(tool_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/kind.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Future(Box<Future<Item = A, Error = B> + 'f_>),
[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] 16 |     Future(Box<dyn Future<Item = A, Error = B> + 'f_>),
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/kinds.rs:69:68
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl<'f_, A: 'f_, B: 'f_>  IntoKind<'f_, FutureKind, A, B> for Box<Future<Item=A, Error=B>>
[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] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl<'f_, A: 'f_, B: 'f_>  IntoKind<'f_, FutureKind, A, B> for Box<dyn Future<Item=A, Error=B>>
[INFO] [stdout]    |                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/kinds.rs:160:27
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn reify(self) -> Box<Future<Item = A, Error = B> + 'f_> {
[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] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn reify(self) -> Box<dyn Future<Item = A, Error = B> + 'f_> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/kinds.rs:159:20
[INFO] [stdout]     |
[INFO] [stdout] 159 |     type Out = Box<Future<Item = A, Error = B> + 'f_>;
[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] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 159 |     type Out = Box<dyn Future<Item = A, Error = B> + 'f_>;
[INFO] [stdout]     |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rats` (lib) due to 1 previous error; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084", kill_on_drop: false }`
[INFO] [stdout] f11eb612822d4c775150e50655ccf1106a6e8d8073c665acc9f2d2637901d084
