[INFO] crate manhattan-tree 0.1.1 is already in cache
[INFO] testing manhattan-tree-0.1.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate manhattan-tree 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate manhattan-tree 0.1.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate manhattan-tree 0.1.1
[INFO] finished tweaking crates.io crate manhattan-tree 0.1.1
[INFO] tweaked toml for crates.io crate manhattan-tree 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 92edc1a78a23a7a2a6a6762a6bc3c4d0e4220dee26c3e359d85f9ca580519950
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "92edc1a78a23a7a2a6a6762a6bc3c4d0e4220dee26c3e359d85f9ca580519950"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling through v0.1.0
[INFO] [stderr]    Compiling bonzai v0.2.1
[INFO] [stderr]    Compiling smallqueue v0.1.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(fixed_size_array)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(optin_builtin_traits)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:611:44
[INFO] [stderr]     |
[INFO] [stderr] 611 | impl<'tree, T, C: FixedSizeArray<ChildId>> !Send for TreeOperation<'tree, T, C> {}
[INFO] [stderr]     |                                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:612:44
[INFO] [stderr]     |
[INFO] [stderr] 612 | impl<'tree, T, C: FixedSizeArray<ChildId>> !Sync for TreeOperation<'tree, T, C> {}
[INFO] [stderr]     |                                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:737:58
[INFO] [stderr]     |
[INFO] [stderr] 737 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Send for NodeWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stderr]     |                                                          ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:738:58
[INFO] [stderr]     |
[INFO] [stderr] 738 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Sync for NodeWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stderr]     |                                                          ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:1135:58
[INFO] [stderr]      |
[INFO] [stderr] 1135 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Send for ChildWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stderr]      |                                                          ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bonzai-0.2.1/src/lib.rs:1136:58
[INFO] [stderr]      |
[INFO] [stderr] 1136 | impl<'op, 'node, 't: 'op, T, C: FixedSizeArray<ChildId>> !Sync for ChildWriteGuard<'op, 'node, 't, T, C> {}
[INFO] [stderr]      |                                                          ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `bonzai`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "92edc1a78a23a7a2a6a6762a6bc3c4d0e4220dee26c3e359d85f9ca580519950"`
[INFO] running `"docker" "rm" "-f" "92edc1a78a23a7a2a6a6762a6bc3c4d0e4220dee26c3e359d85f9ca580519950"`
[INFO] [stdout] 92edc1a78a23a7a2a6a6762a6bc3c4d0e4220dee26c3e359d85f9ca580519950