[INFO] fetching crate reactive-streams 0.0.1...
[INFO] building reactive-streams-0.0.1 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate reactive-streams 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate reactive-streams 0.0.1 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4518b2b7921a28efb869c2a51ae135d8c57801ca392882695fd020263303b37
[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" "e4518b2b7921a28efb869c2a51ae135d8c57801ca392882695fd020263303b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4518b2b7921a28efb869c2a51ae135d8c57801ca392882695fd020263303b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4518b2b7921a28efb869c2a51ae135d8c57801ca392882695fd020263303b37", kill_on_drop: false }`
[INFO] [stdout] e4518b2b7921a28efb869c2a51ae135d8c57801ca392882695fd020263303b37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ccdb2d6b5c952a86aff4b710ef6c9c11da3d4f163a29069ac81fb91f745875d
[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" "6ccdb2d6b5c952a86aff4b710ef6c9c11da3d4f163a29069ac81fb91f745875d", 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]   |                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber<T>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[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/lib.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fn onSubscribe(s: Subscription);
[INFO] [stdout]    |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Subscription`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[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/lib.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn onError(e: std::error::Error);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6ccdb2d6b5c952a86aff4b710ef6c9c11da3d4f163a29069ac81fb91f745875d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ccdb2d6b5c952a86aff4b710ef6c9c11da3d4f163a29069ac81fb91f745875d", kill_on_drop: false }`
[INFO] [stdout] 6ccdb2d6b5c952a86aff4b710ef6c9c11da3d4f163a29069ac81fb91f745875d
