[INFO] fetching crate binartree 2.0.2...
[INFO] checking binartree-2.0.2 against master#e3e432d4d65a55e6db167598e96db2bcb163e316 for pr-140313
[INFO] extracting crate binartree 2.0.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate binartree 2.0.2 on toolchain e3e432d4d65a55e6db167598e96db2bcb163e316
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate binartree 2.0.2
[INFO] finished tweaking crates.io crate binartree 2.0.2
[INFO] tweaked toml for crates.io crate binartree 2.0.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e05c7937359ee52e54dd4c11b6f35a86b378e6f2bef909b603c92b8ac0ce6f03
[INFO] running `Command { std: "docker" "start" "-a" "e05c7937359ee52e54dd4c11b6f35a86b378e6f2bef909b603c92b8ac0ce6f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e05c7937359ee52e54dd4c11b6f35a86b378e6f2bef909b603c92b8ac0ce6f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e05c7937359ee52e54dd4c11b6f35a86b378e6f2bef909b603c92b8ac0ce6f03", kill_on_drop: false }`
[INFO] [stdout] e05c7937359ee52e54dd4c11b6f35a86b378e6f2bef909b603c92b8ac0ce6f03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d370fcf527919382f288aab8184162e9e37d1c572e25250814b76a5889f30ada
[INFO] running `Command { std: "docker" "start" "-a" "d370fcf527919382f288aab8184162e9e37d1c572e25250814b76a5889f30ada", kill_on_drop: false }`
[INFO] [stderr]     Checking binartree v2.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/node.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 mem::drop(branch.key);
[INFO] [stdout]     |                 ^^^^^^^^^^----------^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 206 -                 mem::drop(branch.key);
[INFO] [stdout] 206 +                 let _ = branch.key;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/node.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 mem::drop(branch.key);
[INFO] [stdout]     |                 ^^^^^^^^^^----------^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 206 -                 mem::drop(branch.key);
[INFO] [stdout] 206 +                 let _ = branch.key;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "d370fcf527919382f288aab8184162e9e37d1c572e25250814b76a5889f30ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d370fcf527919382f288aab8184162e9e37d1c572e25250814b76a5889f30ada", kill_on_drop: false }`
[INFO] [stdout] d370fcf527919382f288aab8184162e9e37d1c572e25250814b76a5889f30ada