[INFO] fetching crate rx_core_operator_observe_on 0.2.1...
[INFO] testing rx_core_operator_observe_on-0.2.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rx_core_operator_observe_on 0.2.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate rx_core_operator_observe_on 0.2.1
[INFO] finished tweaking crates.io crate rx_core_operator_observe_on 0.2.1
[INFO] tweaked toml for crates.io crate rx_core_operator_observe_on 0.2.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rx_core_operator_observe_on 0.2.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rx_core_operator_observe_on 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5dd11ad5a6eafa5658655a88e3844b347852365d8e0ea92e036b4812ff6bc54
[INFO] running `Command { std: "docker" "start" "-a" "c5dd11ad5a6eafa5658655a88e3844b347852365d8e0ea92e036b4812ff6bc54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5dd11ad5a6eafa5658655a88e3844b347852365d8e0ea92e036b4812ff6bc54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5dd11ad5a6eafa5658655a88e3844b347852365d8e0ea92e036b4812ff6bc54", kill_on_drop: false }`
[INFO] [stdout] c5dd11ad5a6eafa5658655a88e3844b347852365d8e0ea92e036b4812ff6bc54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d5ff86cee9670c223bb18789fc0e54f3d66a47a9ad40cae43ff22de33523500
[INFO] running `Command { std: "docker" "start" "-a" "4d5ff86cee9670c223bb18789fc0e54f3d66a47a9ad40cae43ff22de33523500", kill_on_drop: false }`
[INFO] [stderr]    Compiling disqualified v1.0.0
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling derive-where v1.6.0
[INFO] [stderr]    Compiling variadics_please v1.1.0
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling rx_core_macro_common v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_observable_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_operator_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_subscription_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_observer_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_subscriber_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_common v0.2.1
[INFO] [stderr]    Compiling rx_core_operator_observe_on v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.72s
[INFO] running `Command { std: "docker" "inspect" "4d5ff86cee9670c223bb18789fc0e54f3d66a47a9ad40cae43ff22de33523500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5ff86cee9670c223bb18789fc0e54f3d66a47a9ad40cae43ff22de33523500", kill_on_drop: false }`
[INFO] [stdout] 4d5ff86cee9670c223bb18789fc0e54f3d66a47a9ad40cae43ff22de33523500
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89a9bb8f50b8ce670d7a98caecd4544524bd2c730d9126019cc89c69c6668018
[INFO] running `Command { std: "docker" "start" "-a" "89a9bb8f50b8ce670d7a98caecd4544524bd2c730d9126019cc89c69c6668018", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling rx_core_macro_work_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_executor_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_scheduler_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_subject_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_scheduler_ticking v0.2.1
[INFO] [stderr]    Compiling rx_core_testing v0.2.1
[INFO] [stderr]    Compiling rx_core_operator_observe_on v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "89a9bb8f50b8ce670d7a98caecd4544524bd2c730d9126019cc89c69c6668018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89a9bb8f50b8ce670d7a98caecd4544524bd2c730d9126019cc89c69c6668018", kill_on_drop: false }`
[INFO] [stdout] 89a9bb8f50b8ce670d7a98caecd4544524bd2c730d9126019cc89c69c6668018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 32be2584f8d1d61ce92edd7a47908afc160dc6f08e094612c76c8e44c283aea4
[INFO] running `Command { std: "docker" "start" "-a" "32be2584f8d1d61ce92edd7a47908afc160dc6f08e094612c76c8e44c283aea4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rx_core_operator_observe_on-c78c7f11ac0cbf45)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests rx_core_operator_observe_on
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "32be2584f8d1d61ce92edd7a47908afc160dc6f08e094612c76c8e44c283aea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32be2584f8d1d61ce92edd7a47908afc160dc6f08e094612c76c8e44c283aea4", kill_on_drop: false }`
[INFO] [stdout] 32be2584f8d1d61ce92edd7a47908afc160dc6f08e094612c76c8e44c283aea4
