[INFO] fetching crate reactive-streams 0.0.1...
[INFO] testing reactive-streams-0.0.1 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate reactive-streams 0.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate reactive-streams 0.0.1 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reactive-streams 0.0.1
[INFO] finished tweaking crates.io crate reactive-streams 0.0.1
[INFO] tweaked toml for crates.io crate reactive-streams 0.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c17dbc0564a1a49f5cecf8db15184cdcff558e2b1d098c678bd8dfb27bf3f12
[INFO] running `Command { std: "docker" "start" "-a" "9c17dbc0564a1a49f5cecf8db15184cdcff558e2b1d098c678bd8dfb27bf3f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c17dbc0564a1a49f5cecf8db15184cdcff558e2b1d098c678bd8dfb27bf3f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c17dbc0564a1a49f5cecf8db15184cdcff558e2b1d098c678bd8dfb27bf3f12", kill_on_drop: false }`
[INFO] [stdout] 9c17dbc0564a1a49f5cecf8db15184cdcff558e2b1d098c678bd8dfb27bf3f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a32601c48a8e941bb40ad71c6aa6461bc62a7d21782f9b7898566c2241662e96
[INFO] running `Command { std: "docker" "start" "-a" "a32601c48a8e941bb40ad71c6aa6461bc62a7d21782f9b7898566c2241662e96", kill_on_drop: false }`
[INFO] [stderr]    Compiling reactive-streams v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 |   fn subscribe(s: Subscriber<T>);
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 3 |   fn subscribe(s: dyn Subscriber<T>);
[INFO] [stdout]   |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fn onSubscribe(s: Subscription);
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fn onSubscribe(s: dyn Subscription);
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn onError(e: std::error::Error);
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn onError(e: dyn std::error::Error);
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `Subscriber` cannot be made into an object
[INFO] [stdout]   --> src/lib.rs:3:19
[INFO] [stdout]    |
[INFO] [stdout] 3  |   fn subscribe(s: Subscriber<T>);
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ `Subscriber` cannot be made into an object
[INFO] [stdout]    |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]   --> src/lib.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Subscriber<T> {
[INFO] [stdout]    |           ---------- this trait cannot be made into an object...
[INFO] [stdout] 14 |   #[allow(non_snake_case)]
[INFO] [stdout] 15 |   fn onSubscribe(s: Subscription);
[INFO] [stdout]    |      ^^^^^^^^^^^ ...because associated function `onSubscribe` has no `self` parameter
[INFO] [stdout] 16 |   #[allow(non_snake_case)]
[INFO] [stdout] 17 |   fn onNext(t: T);
[INFO] [stdout]    |      ^^^^^^ ...because associated function `onNext` has no `self` parameter
[INFO] [stdout] 18 |   #[allow(non_snake_case)]
[INFO] [stdout] 19 |   fn onError(e: std::error::Error);
[INFO] [stdout]    |      ^^^^^^^ ...because associated function `onError` has no `self` parameter
[INFO] [stdout] 20 |   #[allow(non_snake_case)]
[INFO] [stdout] 21 |   fn onComplete();
[INFO] [stdout]    |      ^^^^^^^^^^ ...because associated function `onComplete` has no `self` parameter
[INFO] [stdout] help: consider turning `onSubscribe` into a method by giving it a `&self` argument
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fn onSubscribe(&self, s: Subscription);
[INFO] [stdout]    |                  ++++++
[INFO] [stdout] help: alternatively, consider constraining `onSubscribe` so it does not apply to trait objects
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fn onSubscribe(s: Subscription) where Self: Sized;
[INFO] [stdout]    |                                   +++++++++++++++++
[INFO] [stdout] help: consider turning `onNext` into a method by giving it a `&self` argument
[INFO] [stdout]    |
[INFO] [stdout] 17 |   fn onNext(&self, t: T);
[INFO] [stdout]    |             ++++++
[INFO] [stdout] help: alternatively, consider constraining `onNext` so it does not apply to trait objects
[INFO] [stdout]    |
[INFO] [stdout] 17 |   fn onNext(t: T) where Self: Sized;
[INFO] [stdout]    |                   +++++++++++++++++
[INFO] [stdout] help: consider turning `onError` into a method by giving it a `&self` argument
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn onError(&self, e: std::error::Error);
[INFO] [stdout]    |              ++++++
[INFO] [stdout] help: alternatively, consider constraining `onError` so it does not apply to trait objects
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn onError(e: std::error::Error) where Self: Sized;
[INFO] [stdout]    |                                    +++++++++++++++++
[INFO] [stdout] help: consider turning `onComplete` into a method by giving it a `&self` argument
[INFO] [stdout]    |
[INFO] [stdout] 21 |   fn onComplete(&self);
[INFO] [stdout]    |                 +++++
[INFO] [stdout] help: alternatively, consider constraining `onComplete` so it does not apply to trait objects
[INFO] [stdout]    |
[INFO] [stdout] 21 |   fn onComplete() where Self: Sized;
[INFO] [stdout]    |                   +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `Subscription` cannot be made into an object
[INFO] [stdout]   --> src/lib.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fn onSubscribe(s: Subscription);
[INFO] [stdout]    |                     ^^^^^^^^^^^^ `Subscription` cannot be made into an object
[INFO] [stdout]    |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]   --> src/lib.rs:8:6
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait Subscription {
[INFO] [stdout]    |           ------------ this trait cannot be made into an object...
[INFO] [stdout] 7  |   #[allow(non_snake_case)]
[INFO] [stdout] 8  |   fn request(n: u64);
[INFO] [stdout]    |      ^^^^^^^ ...because associated function `request` has no `self` parameter
[INFO] [stdout] 9  |   #[allow(non_snake_case)]
[INFO] [stdout] 10 |   fn cancel();
[INFO] [stdout]    |      ^^^^^^ ...because associated function `cancel` has no `self` parameter
[INFO] [stdout] help: consider turning `request` into a method by giving it a `&self` argument
[INFO] [stdout]    |
[INFO] [stdout] 8  |   fn request(&self, n: u64);
[INFO] [stdout]    |              ++++++
[INFO] [stdout] help: alternatively, consider constraining `request` so it does not apply to trait objects
[INFO] [stdout]    |
[INFO] [stdout] 8  |   fn request(n: u64) where Self: Sized;
[INFO] [stdout]    |                      +++++++++++++++++
[INFO] [stdout] help: consider turning `cancel` into a method by giving it a `&self` argument
[INFO] [stdout]    |
[INFO] [stdout] 10 |   fn cancel(&self);
[INFO] [stdout]    |             +++++
[INFO] [stdout] help: alternatively, consider constraining `cancel` so it does not apply to trait objects
[INFO] [stdout]    |
[INFO] [stdout] 10 |   fn cancel() where Self: Sized;
[INFO] [stdout]    |               +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0038`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reactive-streams` (lib) due to 3 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a32601c48a8e941bb40ad71c6aa6461bc62a7d21782f9b7898566c2241662e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a32601c48a8e941bb40ad71c6aa6461bc62a7d21782f9b7898566c2241662e96", kill_on_drop: false }`
[INFO] [stdout] a32601c48a8e941bb40ad71c6aa6461bc62a7d21782f9b7898566c2241662e96
