[INFO] fetching crate binartree 2.0.2...
[INFO] checking binartree-2.0.2 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate binartree 2.0.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate binartree 2.0.2 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] beefaa831dcb12828cf3aef4fbdd72668e7a872aad647e10f777fcb148b74636
[INFO] running `Command { std: "docker" "start" "-a" "beefaa831dcb12828cf3aef4fbdd72668e7a872aad647e10f777fcb148b74636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "beefaa831dcb12828cf3aef4fbdd72668e7a872aad647e10f777fcb148b74636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beefaa831dcb12828cf3aef4fbdd72668e7a872aad647e10f777fcb148b74636", kill_on_drop: false }`
[INFO] [stdout] beefaa831dcb12828cf3aef4fbdd72668e7a872aad647e10f777fcb148b74636
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eef390480adf071157e4ca10a02b0702211fcc14b78130c82134319392e108af
[INFO] running `Command { std: "docker" "start" "-a" "eef390480adf071157e4ca10a02b0702211fcc14b78130c82134319392e108af", 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: 1 warning emitted
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "eef390480adf071157e4ca10a02b0702211fcc14b78130c82134319392e108af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef390480adf071157e4ca10a02b0702211fcc14b78130c82134319392e108af", kill_on_drop: false }`
[INFO] [stdout] eef390480adf071157e4ca10a02b0702211fcc14b78130c82134319392e108af