[INFO] fetching crate bulk_allocator 0.2.0...
[INFO] checking bulk_allocator-0.2.0 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate bulk_allocator 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bulk_allocator 0.2.0 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bulk_allocator 0.2.0
[INFO] finished tweaking crates.io crate bulk_allocator 0.2.0
[INFO] tweaked toml for crates.io crate bulk_allocator 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa72f9ed2e4349636bcb1e8c108db003b2aae7fb5d700d043be4a2b8496ef2d3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fa72f9ed2e4349636bcb1e8c108db003b2aae7fb5d700d043be4a2b8496ef2d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa72f9ed2e4349636bcb1e8c108db003b2aae7fb5d700d043be4a2b8496ef2d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa72f9ed2e4349636bcb1e8c108db003b2aae7fb5d700d043be4a2b8496ef2d3", kill_on_drop: false }`
[INFO] [stdout] fa72f9ed2e4349636bcb1e8c108db003b2aae7fb5d700d043be4a2b8496ef2d3
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1425b2ddbf7dda37196ef0b0722c0ae7b5435a50426bd4a568b21ddccf2a2e48
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1425b2ddbf7dda37196ef0b0722c0ae7b5435a50426bd4a568b21ddccf2a2e48", kill_on_drop: false }`
[INFO] [stderr]     Checking bulk_allocator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `core::alloc::AllocErr`, `core::alloc::AllocRef`
[INFO] [stdout]   --> src/backend.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 | use core::alloc::{AllocErr, AllocRef, Layout};
[INFO] [stdout]    |                   ^^^^^^^^  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   no `AllocErr` in `alloc`
[INFO] [stdout]    |                   help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `core::alloc::AllocErr`, `core::alloc::AllocRef`
[INFO] [stdout]   --> src/bulk_allocator.rs:37:19
[INFO] [stdout]    |
[INFO] [stdout] 37 | use core::alloc::{AllocErr, AllocRef, Layout};
[INFO] [stdout]    |                   ^^^^^^^^  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   no `AllocErr` in `alloc`
[INFO] [stdout]    |                   help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `core::alloc::AllocErr`, `core::alloc::AllocRef`
[INFO] [stdout]   --> src/layout_bulk_allocator.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 | use core::alloc::{AllocErr, AllocRef, Layout};
[INFO] [stdout]    |                   ^^^^^^^^  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   no `AllocErr` in `alloc`
[INFO] [stdout]    |                   help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bulk_allocator`
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0432]: unresolved imports `core::alloc::AllocErr`, `core::alloc::AllocRef`
[INFO] [stdout]   --> src/backend.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 | use core::alloc::{AllocErr, AllocRef, Layout};
[INFO] [stdout]    |                   ^^^^^^^^  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   no `AllocErr` in `alloc`
[INFO] [stdout]    |                   help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `core::alloc::AllocErr`, `core::alloc::AllocRef`
[INFO] [stdout]   --> src/bulk_allocator.rs:37:19
[INFO] [stdout]    |
[INFO] [stdout] 37 | use core::alloc::{AllocErr, AllocRef, Layout};
[INFO] [stdout]    |                   ^^^^^^^^  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   no `AllocErr` in `alloc`
[INFO] [stdout]    |                   help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `core::alloc::AllocErr`, `core::alloc::AllocRef`
[INFO] [stdout]   --> src/layout_bulk_allocator.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 | use core::alloc::{AllocErr, AllocRef, Layout};
[INFO] [stdout]    |                   ^^^^^^^^  ^^^^^^^^ no `AllocRef` in `alloc`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   no `AllocErr` in `alloc`
[INFO] [stdout]    |                   help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1425b2ddbf7dda37196ef0b0722c0ae7b5435a50426bd4a568b21ddccf2a2e48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1425b2ddbf7dda37196ef0b0722c0ae7b5435a50426bd4a568b21ddccf2a2e48", kill_on_drop: false }`
[INFO] [stdout] 1425b2ddbf7dda37196ef0b0722c0ae7b5435a50426bd4a568b21ddccf2a2e48