[INFO] fetching crate msg_channel_core 0.1.0-beat.3...
[INFO] testing msg_channel_core-0.1.0-beat.3 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate msg_channel_core 0.1.0-beat.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate msg_channel_core 0.1.0-beat.3
[INFO] finished tweaking crates.io crate msg_channel_core 0.1.0-beat.3
[INFO] tweaked toml for crates.io crate msg_channel_core 0.1.0-beat.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate msg_channel_core 0.1.0-beat.3 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 42 packages to latest compatible versions
[INFO] [stderr]       Adding force-send-sync v1.2.0 (available: v2.0.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb166a77d4d78b25b9db5376e9ad18389013ae4593ae38823184ce7fe0e096a6
[INFO] running `Command { std: "docker" "start" "-a" "bb166a77d4d78b25b9db5376e9ad18389013ae4593ae38823184ce7fe0e096a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb166a77d4d78b25b9db5376e9ad18389013ae4593ae38823184ce7fe0e096a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb166a77d4d78b25b9db5376e9ad18389013ae4593ae38823184ce7fe0e096a6", kill_on_drop: false }`
[INFO] [stdout] bb166a77d4d78b25b9db5376e9ad18389013ae4593ae38823184ce7fe0e096a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 423199bb225c84474b941f184506257eedb38f4f32a3ba8b6674eb3f4d1224e4
[INFO] running `Command { std: "docker" "start" "-a" "423199bb225c84474b941f184506257eedb38f4f32a3ba8b6674eb3f4d1224e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling force-send-sync v1.2.0
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling msg_channel_macro v0.1.0-beat.3
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling msg_channel_core v0.1.0-beat.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.22s
[INFO] running `Command { std: "docker" "inspect" "423199bb225c84474b941f184506257eedb38f4f32a3ba8b6674eb3f4d1224e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "423199bb225c84474b941f184506257eedb38f4f32a3ba8b6674eb3f4d1224e4", kill_on_drop: false }`
[INFO] [stdout] 423199bb225c84474b941f184506257eedb38f4f32a3ba8b6674eb3f4d1224e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82f8450490d49c17606f7a2061fb1658a17e4a9d78be17f464367c89106a90dd
[INFO] running `Command { std: "docker" "start" "-a" "82f8450490d49c17606f7a2061fb1658a17e4a9d78be17f464367c89106a90dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling msg_channel_core v0.1.0-beat.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "82f8450490d49c17606f7a2061fb1658a17e4a9d78be17f464367c89106a90dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82f8450490d49c17606f7a2061fb1658a17e4a9d78be17f464367c89106a90dd", kill_on_drop: false }`
[INFO] [stdout] 82f8450490d49c17606f7a2061fb1658a17e4a9d78be17f464367c89106a90dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 10d4f33dec438bc1233fe574d71ae14501dd0f7879fddd7ce242e0a830a2abb6
[INFO] running `Command { std: "docker" "start" "-a" "10d4f33dec438bc1233fe574d71ae14501dd0f7879fddd7ce242e0a830a2abb6", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/msg_channel_core-44d00d4ef4ab2a2f)
[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 msg_channel_core
[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" "10d4f33dec438bc1233fe574d71ae14501dd0f7879fddd7ce242e0a830a2abb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10d4f33dec438bc1233fe574d71ae14501dd0f7879fddd7ce242e0a830a2abb6", kill_on_drop: false }`
[INFO] [stdout] 10d4f33dec438bc1233fe574d71ae14501dd0f7879fddd7ce242e0a830a2abb6