[INFO] fetching crate be-tree 0.1.0...
[INFO] checking be-tree-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate be-tree 0.1.0 into /workspace/builds/worker-0-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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate be-tree 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d26894125451d7317bfe35757e6195c9108f0da5c1b24889cbb0683bec57584
[INFO] running `Command { std: "docker" "start" "-a" "6d26894125451d7317bfe35757e6195c9108f0da5c1b24889cbb0683bec57584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d26894125451d7317bfe35757e6195c9108f0da5c1b24889cbb0683bec57584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d26894125451d7317bfe35757e6195c9108f0da5c1b24889cbb0683bec57584", kill_on_drop: false }`
[INFO] [stdout] 6d26894125451d7317bfe35757e6195c9108f0da5c1b24889cbb0683bec57584
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48ef7790a8d94329bf5cd92ab0345c48cbbd4c45ade047d4ac25ed9fbdd59ec9
[INFO] running `Command { std: "docker" "start" "-a" "48ef7790a8d94329bf5cd92ab0345c48cbbd4c45ade047d4ac25ed9fbdd59ec9", 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 0.23s
[INFO] running `Command { std: "docker" "inspect" "48ef7790a8d94329bf5cd92ab0345c48cbbd4c45ade047d4ac25ed9fbdd59ec9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ef7790a8d94329bf5cd92ab0345c48cbbd4c45ade047d4ac25ed9fbdd59ec9", kill_on_drop: false }`
[INFO] [stdout] 48ef7790a8d94329bf5cd92ab0345c48cbbd4c45ade047d4ac25ed9fbdd59ec9