[INFO] crate reactive-streams 0.0.1 is already in cache
[INFO] testing reactive-streams-0.0.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate reactive-streams 0.0.1 into work/builds/worker-8/source
[INFO] validating manifest of crates.io crate reactive-streams 0.0.1 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-8/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 162aa063ad34d4a44913f8d38399082f67bdba4d8d2da8544fa4fe00e5d3a6cc
[INFO] running `"docker" "start" "-a" "162aa063ad34d4a44913f8d38399082f67bdba4d8d2da8544fa4fe00e5d3a6cc"`
[INFO] [stderr]    Compiling reactive-streams v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lib.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 |   fn subscribe(s: Subscriber<T>);
[INFO] [stderr]   |                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber<T>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 |   fn onSubscribe(s: Subscription);
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Subscription`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |   fn onError(e: std::error::Error);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] error[E0038]: the trait `Subscriber` cannot be made into an object
[INFO] [stderr]  --> src/lib.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   fn subscribe(s: Subscriber<T>);
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Subscriber` cannot be made into an object
[INFO] [stderr]   |
[INFO] [stderr]   = note: method `onSubscribe` has no receiver
[INFO] [stderr]   = note: method `onNext` has no receiver
[INFO] [stderr]   = note: method `onError` has no receiver
[INFO] [stderr]   = note: method `onComplete` has no receiver
[INFO] [stderr] 
[INFO] [stderr] error[E0038]: the trait `Subscription` cannot be made into an object
[INFO] [stderr]   --> src/lib.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   fn onSubscribe(s: Subscription);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Subscription` cannot be made into an object
[INFO] [stderr]    |
[INFO] [stderr]    = note: method `request` has no receiver
[INFO] [stderr]    = note: method `cancel` has no receiver
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0038`.
[INFO] [stderr] error: Could not compile `reactive-streams`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "162aa063ad34d4a44913f8d38399082f67bdba4d8d2da8544fa4fe00e5d3a6cc"`
[INFO] running `"docker" "rm" "-f" "162aa063ad34d4a44913f8d38399082f67bdba4d8d2da8544fa4fe00e5d3a6cc"`
[INFO] [stdout] 162aa063ad34d4a44913f8d38399082f67bdba4d8d2da8544fa4fe00e5d3a6cc