[INFO] fetching crate bonzai 0.2.1...
[INFO] testing bonzai-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bonzai 0.2.1 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate bonzai 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bonzai 0.2.1
[INFO] finished tweaking crates.io crate bonzai 0.2.1
[INFO] tweaked toml for crates.io crate bonzai 0.2.1 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d5f524b286868a1db9dcb0a906ceb01526bc27e3ac5974884d9edf03a2bc07f
[INFO] running `Command { std: "docker" "start" "-a" "9d5f524b286868a1db9dcb0a906ceb01526bc27e3ac5974884d9edf03a2bc07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d5f524b286868a1db9dcb0a906ceb01526bc27e3ac5974884d9edf03a2bc07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d5f524b286868a1db9dcb0a906ceb01526bc27e3ac5974884d9edf03a2bc07f", kill_on_drop: false }`
[INFO] [stdout] 9d5f524b286868a1db9dcb0a906ceb01526bc27e3ac5974884d9edf03a2bc07f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ad384b77aa2aeb3dea0f65f47be95152d76bd418f3f084e97d773ef68efa576
[INFO] running `Command { std: "docker" "start" "-a" "4ad384b77aa2aeb3dea0f65f47be95152d76bd418f3f084e97d773ef68efa576", kill_on_drop: false }`
[INFO] [stderr]    Compiling bonzai v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(optin_builtin_traits)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `auto_traits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::array::FixedSizeArray`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::array::FixedSizeArray;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `FixedSizeArray` in `array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fixed_size_array)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(optin_builtin_traits)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]    --> src/lib.rs:611:44
[INFO] [stdout]     |
[INFO] [stdout] 611 | impl<'tree, T, C: FixedSizeArray<ChildId>> !Send for TreeOperation<'tree, T, C> {}
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]    --> src/lib.rs:612:44
[INFO] [stdout]     |
[INFO] [stdout] 612 | impl<'tree, T, C: FixedSizeArray<ChildId>> !Sync for TreeOperation<'tree, T, C> {}
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]    --> src/lib.rs:737:58
[INFO] [stdout]     |
[INFO] [stdout] 737 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Send for NodeWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stdout]     |                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]    --> src/lib.rs:738:58
[INFO] [stdout]     |
[INFO] [stdout] 738 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Sync for NodeWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stdout]     |                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]     --> src/lib.rs:1135:58
[INFO] [stdout]      |
[INFO] [stdout] 1135 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Send for ChildWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stdout]      |                                                          ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]     --> src/lib.rs:1136:58
[INFO] [stdout]      |
[INFO] [stdout] 1136 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Sync for ChildWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stdout]      |                                                          ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:127:36
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let mut children: C = mem::uninitialized();
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:961:37
[INFO] [stdout]     |
[INFO] [stdout] 961 |                 let array: C = mem::uninitialized();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:985:37
[INFO] [stdout]     |
[INFO] [stdout] 985 |                 let array: C = mem::uninitialized();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bonzai` due to 11 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4ad384b77aa2aeb3dea0f65f47be95152d76bd418f3f084e97d773ef68efa576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ad384b77aa2aeb3dea0f65f47be95152d76bd418f3f084e97d773ef68efa576", kill_on_drop: false }`
[INFO] [stdout] 4ad384b77aa2aeb3dea0f65f47be95152d76bd418f3f084e97d773ef68efa576