[INFO] fetching crate tcp-echo-client 0.1.1...
[INFO] testing tcp-echo-client-0.1.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate tcp-echo-client 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tcp-echo-client 0.1.1
[INFO] finished tweaking crates.io crate tcp-echo-client 0.1.1
[INFO] tweaked toml for crates.io crate tcp-echo-client 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tcp-echo-client 0.1.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tcp-echo-client 0.1.1 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64b386dc48c99632296a22122340323de9c3d73849170f212193cd25b4306d1e
[INFO] running `Command { std: "docker" "start" "-a" "64b386dc48c99632296a22122340323de9c3d73849170f212193cd25b4306d1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64b386dc48c99632296a22122340323de9c3d73849170f212193cd25b4306d1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b386dc48c99632296a22122340323de9c3d73849170f212193cd25b4306d1e", kill_on_drop: false }`
[INFO] [stdout] 64b386dc48c99632296a22122340323de9c3d73849170f212193cd25b4306d1e
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64b95d5989117d8f7195d1b1fcf7d3d9d6cec8073caa3af226f3fbb0f4b1a393
[INFO] running `Command { std: "docker" "start" "-a" "64b95d5989117d8f7195d1b1fcf7d3d9d6cec8073caa3af226f3fbb0f4b1a393", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling anstream v0.6.19
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling clap_builder v4.5.39
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling clap v4.5.39
[INFO] [stderr]    Compiling tcp-echo-client v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.62s
[INFO] running `Command { std: "docker" "inspect" "64b95d5989117d8f7195d1b1fcf7d3d9d6cec8073caa3af226f3fbb0f4b1a393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b95d5989117d8f7195d1b1fcf7d3d9d6cec8073caa3af226f3fbb0f4b1a393", kill_on_drop: false }`
[INFO] [stdout] 64b95d5989117d8f7195d1b1fcf7d3d9d6cec8073caa3af226f3fbb0f4b1a393
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18b4ae56497a94bc2339c056a1599e01b87e03737600c936b4e9bc6b078c2605
[INFO] running `Command { std: "docker" "start" "-a" "18b4ae56497a94bc2339c056a1599e01b87e03737600c936b4e9bc6b078c2605", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcp-echo-client v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "18b4ae56497a94bc2339c056a1599e01b87e03737600c936b4e9bc6b078c2605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b4ae56497a94bc2339c056a1599e01b87e03737600c936b4e9bc6b078c2605", kill_on_drop: false }`
[INFO] [stdout] 18b4ae56497a94bc2339c056a1599e01b87e03737600c936b4e9bc6b078c2605
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bb5313d2318cea4e0de2fb3ecc437d5273c56603240c54c2fe90f25b37fbc008
[INFO] running `Command { std: "docker" "start" "-a" "bb5313d2318cea4e0de2fb3ecc437d5273c56603240c54c2fe90f25b37fbc008", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/tcp_echo_client-403e4bab7847b232)
[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" "bb5313d2318cea4e0de2fb3ecc437d5273c56603240c54c2fe90f25b37fbc008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb5313d2318cea4e0de2fb3ecc437d5273c56603240c54c2fe90f25b37fbc008", kill_on_drop: false }`
[INFO] [stdout] bb5313d2318cea4e0de2fb3ecc437d5273c56603240c54c2fe90f25b37fbc008