[INFO] fetching crate redcon 0.1.2...
[INFO] checking redcon-0.1.2 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate redcon 0.1.2 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate redcon 0.1.2 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redcon 0.1.2
[INFO] finished tweaking crates.io crate redcon 0.1.2
[INFO] tweaked toml for crates.io crate redcon 0.1.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c5b455179e96e8cc5ab513d4046564ba7473646e9810703e55f276bd64d0e85
[INFO] running `Command { std: "docker" "start" "-a" "2c5b455179e96e8cc5ab513d4046564ba7473646e9810703e55f276bd64d0e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c5b455179e96e8cc5ab513d4046564ba7473646e9810703e55f276bd64d0e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c5b455179e96e8cc5ab513d4046564ba7473646e9810703e55f276bd64d0e85", kill_on_drop: false }`
[INFO] [stdout] 2c5b455179e96e8cc5ab513d4046564ba7473646e9810703e55f276bd64d0e85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b2e2528dca76a0002da9761ec0ccb5df7077489981265117c58a961d71ac447
[INFO] running `Command { std: "docker" "start" "-a" "8b2e2528dca76a0002da9761ec0ccb5df7077489981265117c58a961d71ac447", kill_on_drop: false }`
[INFO] [stderr]     Checking redcon v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/lib.rs:437:5
[INFO] [stdout]     |
[INFO] [stdout] 437 |     drop(s);
[INFO] [stdout]     |     ^^^^^-^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          argument has type `&mut Server<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 437 -     drop(s);
[INFO] [stdout] 437 +     let _ = s;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/lib.rs:437:5
[INFO] [stdout]     |
[INFO] [stdout] 437 |     drop(s);
[INFO] [stdout]     |     ^^^^^-^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          argument has type `&mut Server<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 437 -     drop(s);
[INFO] [stdout] 437 +     let _ = s;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "8b2e2528dca76a0002da9761ec0ccb5df7077489981265117c58a961d71ac447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b2e2528dca76a0002da9761ec0ccb5df7077489981265117c58a961d71ac447", kill_on_drop: false }`
[INFO] [stdout] 8b2e2528dca76a0002da9761ec0ccb5df7077489981265117c58a961d71ac447