[INFO] fetching crate rx_core_operator_concat_with 0.0.1...
[INFO] testing rx_core_operator_concat_with-0.0.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rx_core_operator_concat_with 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rx_core_operator_concat_with 0.0.1
[INFO] finished tweaking crates.io crate rx_core_operator_concat_with 0.0.1
[INFO] tweaked toml for crates.io crate rx_core_operator_concat_with 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rx_core_operator_concat_with 0.0.1 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_concat_with 0.0.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 55155c7a1e4a047798d3ec04cef742d7a1f56e1d289b48809c11011513364ec7
[INFO] running `Command { std: "docker" "start" "-a" "55155c7a1e4a047798d3ec04cef742d7a1f56e1d289b48809c11011513364ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55155c7a1e4a047798d3ec04cef742d7a1f56e1d289b48809c11011513364ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55155c7a1e4a047798d3ec04cef742d7a1f56e1d289b48809c11011513364ec7", kill_on_drop: false }`
[INFO] [stdout] 55155c7a1e4a047798d3ec04cef742d7a1f56e1d289b48809c11011513364ec7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4f461b677bb607e781c7311845ba1a86e8f84d7537bc07d18c18c3fc7e9d97e3
[INFO] running `Command { std: "docker" "start" "-a" "4f461b677bb607e781c7311845ba1a86e8f84d7537bc07d18c18c3fc7e9d97e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rx_core_operator_concat_with v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "4f461b677bb607e781c7311845ba1a86e8f84d7537bc07d18c18c3fc7e9d97e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f461b677bb607e781c7311845ba1a86e8f84d7537bc07d18c18c3fc7e9d97e3", kill_on_drop: false }`
[INFO] [stdout] 4f461b677bb607e781c7311845ba1a86e8f84d7537bc07d18c18c3fc7e9d97e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7a0ea49f4cb9572c625609e6ef9f554ab307798ce322bc7e67604cd63debb33b
[INFO] running `Command { std: "docker" "start" "-a" "7a0ea49f4cb9572c625609e6ef9f554ab307798ce322bc7e67604cd63debb33b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rx_core_operator_concat_with v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "7a0ea49f4cb9572c625609e6ef9f554ab307798ce322bc7e67604cd63debb33b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a0ea49f4cb9572c625609e6ef9f554ab307798ce322bc7e67604cd63debb33b", kill_on_drop: false }`
[INFO] [stdout] 7a0ea49f4cb9572c625609e6ef9f554ab307798ce322bc7e67604cd63debb33b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 44769b719dee9ef2b6800663aeff94c717d8d512f80a5f0860117bb07b5741e1
[INFO] running `Command { std: "docker" "start" "-a" "44769b719dee9ef2b6800663aeff94c717d8d512f80a5f0860117bb07b5741e1", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rx_core_operator_concat_with-ac710cdd3079ab34)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rx_core_operator_concat_with
[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" "44769b719dee9ef2b6800663aeff94c717d8d512f80a5f0860117bb07b5741e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44769b719dee9ef2b6800663aeff94c717d8d512f80a5f0860117bb07b5741e1", kill_on_drop: false }`
[INFO] [stdout] 44769b719dee9ef2b6800663aeff94c717d8d512f80a5f0860117bb07b5741e1
