[INFO] fetching crate be-tree 0.1.0...
[INFO] checking be-tree-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate be-tree 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate be-tree 0.1.0
[INFO] finished tweaking crates.io crate be-tree 0.1.0
[INFO] tweaked toml for crates.io crate be-tree 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate be-tree 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7950a2af93ff6b98d68b174fd2c4e0f4f47c6ee2cb10dcf23c43736c3b1ef86b
[INFO] running `Command { std: "docker" "start" "-a" "7950a2af93ff6b98d68b174fd2c4e0f4f47c6ee2cb10dcf23c43736c3b1ef86b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7950a2af93ff6b98d68b174fd2c4e0f4f47c6ee2cb10dcf23c43736c3b1ef86b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7950a2af93ff6b98d68b174fd2c4e0f4f47c6ee2cb10dcf23c43736c3b1ef86b", kill_on_drop: false }`
[INFO] [stdout] 7950a2af93ff6b98d68b174fd2c4e0f4f47c6ee2cb10dcf23c43736c3b1ef86b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78f3ed95bd4833593a3718a1d4dc3edcbf7f19e54294162d0e4c9cf98d1df1c7
[INFO] running `Command { std: "docker" "start" "-a" "78f3ed95bd4833593a3718a1d4dc3edcbf7f19e54294162d0e4c9cf98d1df1c7", kill_on_drop: false }`
[INFO] [stderr]     Checking be-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the type `[Pivot<K, V>; 4]` does not permit being left uninitialized
[INFO] [stdout]   --> src/lib.rs:55:45
[INFO] [stdout]    |
[INFO] [stdout] 55 |             let mut result = Self { pivots: mem::MaybeUninit::uninit().assume_init(), len: 2 };
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]    |
[INFO] [stdout] note: `Box` must be non-null (in this struct field)
[INFO] [stdout]   --> src/lib.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 |     child: Box<Node<K, V>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[Pivot<K, V>; 4]` does not permit being left uninitialized
[INFO] [stdout]   --> src/lib.rs:55:45
[INFO] [stdout]    |
[INFO] [stdout] 55 |             let mut result = Self { pivots: mem::MaybeUninit::uninit().assume_init(), len: 2 };
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]    |
[INFO] [stdout] note: `Box` must be non-null (in this struct field)
[INFO] [stdout]   --> src/lib.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 |     child: Box<Node<K, V>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "78f3ed95bd4833593a3718a1d4dc3edcbf7f19e54294162d0e4c9cf98d1df1c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f3ed95bd4833593a3718a1d4dc3edcbf7f19e54294162d0e4c9cf98d1df1c7", kill_on_drop: false }`
[INFO] [stdout] 78f3ed95bd4833593a3718a1d4dc3edcbf7f19e54294162d0e4c9cf98d1df1c7