[INFO] fetching crate rx_core_observer_noop 0.2.1...
[INFO] testing rx_core_observer_noop-0.2.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rx_core_observer_noop 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate rx_core_observer_noop 0.2.1
[INFO] finished tweaking crates.io crate rx_core_observer_noop 0.2.1
[INFO] tweaked toml for crates.io crate rx_core_observer_noop 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rx_core_observer_noop 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_observer_noop 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 56049d821480126774ccd9573172bed648328894e7b734b3461c48142f86a127
[INFO] running `Command { std: "docker" "start" "-a" "56049d821480126774ccd9573172bed648328894e7b734b3461c48142f86a127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56049d821480126774ccd9573172bed648328894e7b734b3461c48142f86a127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56049d821480126774ccd9573172bed648328894e7b734b3461c48142f86a127", kill_on_drop: false }`
[INFO] [stdout] 56049d821480126774ccd9573172bed648328894e7b734b3461c48142f86a127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 94df43141d0df970ac63299860a41ccbdffbdeccda36d69507a1cb5f46d855aa
[INFO] running `Command { std: "docker" "start" "-a" "94df43141d0df970ac63299860a41ccbdffbdeccda36d69507a1cb5f46d855aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling disqualified v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling variadics_please v1.1.0
[INFO] [stderr]    Compiling derive-where v1.6.0
[INFO] [stderr]    Compiling rx_core_macro_common v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_observer_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_operator_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_observable_derive v0.2.1
[INFO] [stderr]    Compiling rx_core_macro_subscription_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_observer_noop v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.19s
[INFO] running `Command { std: "docker" "inspect" "94df43141d0df970ac63299860a41ccbdffbdeccda36d69507a1cb5f46d855aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94df43141d0df970ac63299860a41ccbdffbdeccda36d69507a1cb5f46d855aa", kill_on_drop: false }`
[INFO] [stdout] 94df43141d0df970ac63299860a41ccbdffbdeccda36d69507a1cb5f46d855aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 00683aad5c7d9d9c1714b46de6a4162c28d0c8fb6d783036d6445c2b89422e36
[INFO] running `Command { std: "docker" "start" "-a" "00683aad5c7d9d9c1714b46de6a4162c28d0c8fb6d783036d6445c2b89422e36", kill_on_drop: false }`
[INFO] [stderr]    Compiling rx_core_observer_noop v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "00683aad5c7d9d9c1714b46de6a4162c28d0c8fb6d783036d6445c2b89422e36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00683aad5c7d9d9c1714b46de6a4162c28d0c8fb6d783036d6445c2b89422e36", kill_on_drop: false }`
[INFO] [stdout] 00683aad5c7d9d9c1714b46de6a4162c28d0c8fb6d783036d6445c2b89422e36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 103d21e3140264c155a9cc5fc693e461312557220a897bba5d5ee856c750df7e
[INFO] running `Command { std: "docker" "start" "-a" "103d21e3140264c155a9cc5fc693e461312557220a897bba5d5ee856c750df7e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rx_core_observer_noop-b5b76ad5c4c711e4)
[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] [stderr]    Doc-tests rx_core_observer_noop
[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" "103d21e3140264c155a9cc5fc693e461312557220a897bba5d5ee856c750df7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "103d21e3140264c155a9cc5fc693e461312557220a897bba5d5ee856c750df7e", kill_on_drop: false }`
[INFO] [stdout] 103d21e3140264c155a9cc5fc693e461312557220a897bba5d5ee856c750df7e
