[INFO] fetching crate basic_tcp_proxy 0.1.3...
[INFO] checking basic_tcp_proxy-0.1.3 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate basic_tcp_proxy 0.1.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate basic_tcp_proxy 0.1.3 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate basic_tcp_proxy 0.1.3
[INFO] finished tweaking crates.io crate basic_tcp_proxy 0.1.3
[INFO] tweaked toml for crates.io crate basic_tcp_proxy 0.1.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate basic_tcp_proxy 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] daf6c0b833966334bb87988438fea7898ce2ecdec7fa9f812c95df90b09cb55d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "daf6c0b833966334bb87988438fea7898ce2ecdec7fa9f812c95df90b09cb55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "daf6c0b833966334bb87988438fea7898ce2ecdec7fa9f812c95df90b09cb55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daf6c0b833966334bb87988438fea7898ce2ecdec7fa9f812c95df90b09cb55d", kill_on_drop: false }`
[INFO] [stdout] daf6c0b833966334bb87988438fea7898ce2ecdec7fa9f812c95df90b09cb55d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28769be8fdae1c574c334305782c99829962ab563e8542d5ef749cb277928ac3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "28769be8fdae1c574c334305782c99829962ab563e8542d5ef749cb277928ac3", kill_on_drop: false }`
[INFO] [stderr]     Checking basic_tcp_proxy v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "28769be8fdae1c574c334305782c99829962ab563e8542d5ef749cb277928ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28769be8fdae1c574c334305782c99829962ab563e8542d5ef749cb277928ac3", kill_on_drop: false }`
[INFO] [stdout] 28769be8fdae1c574c334305782c99829962ab563e8542d5ef749cb277928ac3