[INFO] crate slab_allocator 0.3.5 is already in cache
[INFO] checking slab_allocator-0.3.5 against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] extracting crate slab_allocator 0.3.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate slab_allocator 0.3.5 on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slab_allocator 0.3.5
[INFO] finished tweaking crates.io crate slab_allocator 0.3.5
[INFO] tweaked toml for crates.io crate slab_allocator 0.3.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+13f916f63bc6575d5ff1f989237dfabe88981368" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] de4c5d80e5333a01a8c5a23343f8b6e78725deab8d77fa0ab4ce6660d3f5de8b
[INFO] running `"docker" "start" "-a" "de4c5d80e5333a01a8c5a23343f8b6e78725deab8d77fa0ab4ce6660d3f5de8b"`
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking linked_list_allocator v0.6.6
[INFO] [stderr] error[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.6/src/lib.rs:133:5
[INFO] [stderr]     |
[INFO] [stderr] 133 |     unsafe fn alloc(&mut self, layout: Layout) -> Result<NonNull<u8>, AllocErr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected tuple, found struct `core::ptr::NonNull`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected fn pointer `unsafe fn(&mut Heap, core::alloc::Layout) -> core::result::Result<(core::ptr::NonNull<u8>, usize), _>`
[INFO] [stderr]                found fn pointer `unsafe fn(&mut Heap, core::alloc::Layout) -> core::result::Result<core::ptr::NonNull<u8>, _>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0053`.
[INFO] [stderr] error: could not compile `linked_list_allocator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "de4c5d80e5333a01a8c5a23343f8b6e78725deab8d77fa0ab4ce6660d3f5de8b"`
[INFO] running `"docker" "rm" "-f" "de4c5d80e5333a01a8c5a23343f8b6e78725deab8d77fa0ab4ce6660d3f5de8b"`
[INFO] [stdout] de4c5d80e5333a01a8c5a23343f8b6e78725deab8d77fa0ab4ce6660d3f5de8b