[INFO] fetching crate rust_tcp_ipc 0.3.1...
[INFO] checking rust_tcp_ipc-0.3.1 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate rust_tcp_ipc 0.3.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate rust_tcp_ipc 0.3.1 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_tcp_ipc 0.3.1
[INFO] finished tweaking crates.io crate rust_tcp_ipc 0.3.1
[INFO] tweaked toml for crates.io crate rust_tcp_ipc 0.3.1 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93201f77e31356ba1512ed9a2b51ce9b25849d89410390b1e3a04f966b624409
[INFO] running `Command { std: "docker" "start" "-a" "93201f77e31356ba1512ed9a2b51ce9b25849d89410390b1e3a04f966b624409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93201f77e31356ba1512ed9a2b51ce9b25849d89410390b1e3a04f966b624409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93201f77e31356ba1512ed9a2b51ce9b25849d89410390b1e3a04f966b624409", kill_on_drop: false }`
[INFO] [stdout] 93201f77e31356ba1512ed9a2b51ce9b25849d89410390b1e3a04f966b624409
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=forbid" "-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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbd06005beefb8a2990d5cecef7e9cec24dbd5bcccc93e47162098bc0ec79a81
[INFO] running `Command { std: "docker" "start" "-a" "dbd06005beefb8a2990d5cecef7e9cec24dbd5bcccc93e47162098bc0ec79a81", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stdout] warning: variant is never constructed: `Working`
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `speed_check_tcp_minimal`
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stdout] warning: variant is never constructed: `Working`
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `speed_check_tcp_minimal`
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "dbd06005beefb8a2990d5cecef7e9cec24dbd5bcccc93e47162098bc0ec79a81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbd06005beefb8a2990d5cecef7e9cec24dbd5bcccc93e47162098bc0ec79a81", kill_on_drop: false }`
[INFO] [stdout] dbd06005beefb8a2990d5cecef7e9cec24dbd5bcccc93e47162098bc0ec79a81