[INFO] fetching crate bulk_allocator 0.2.0...
[INFO] checking bulk_allocator-0.2.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[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 d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1ee0d391c0a160871ca7038dcc9b5bc49b918c4097797a8a349adca628c72fa9
[INFO] running `Command { std: "docker" "start" "-a" "1ee0d391c0a160871ca7038dcc9b5bc49b918c4097797a8a349adca628c72fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ee0d391c0a160871ca7038dcc9b5bc49b918c4097797a8a349adca628c72fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ee0d391c0a160871ca7038dcc9b5bc49b918c4097797a8a349adca628c72fa9", kill_on_drop: false }`
[INFO] [stdout] 1ee0d391c0a160871ca7038dcc9b5bc49b918c4097797a8a349adca628c72fa9
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91ac2ecefd591558123079113b785b076124ce44b36ede2e5cfa9e5bbefe7721
[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" "91ac2ecefd591558123079113b785b076124ce44b36ede2e5cfa9e5bbefe7721", kill_on_drop: false }`
[INFO] [stderr]     Checking bulk_allocator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stdout]   --> src/backend.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn alloc(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&Backend<'_, B>, Layout) -> std::result::Result<_, _>`
[INFO] [stdout]               found fn pointer `fn(&mut Backend<'_, B>, Layout) -> std::result::Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `dealloc` has an incompatible type for trait
[INFO] [stdout]   --> src/backend.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `unsafe fn(&Backend<'_, B>, NonNull<_>, Layout)`
[INFO] [stdout]               found fn pointer `unsafe fn(&mut Backend<'_, B>, NonNull<_>, Layout)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stdout]    --> src/bulk_allocator.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn alloc(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `fn(&BulkAllocator<'_, B>, Layout) -> std::result::Result<_, _>`
[INFO] [stdout]                found fn pointer `fn(&mut BulkAllocator<'_, B>, Layout) -> std::result::Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `dealloc` has an incompatible type for trait
[INFO] [stdout]    --> src/bulk_allocator.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 173 |     unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `unsafe fn(&BulkAllocator<'_, B>, NonNull<_>, Layout)`
[INFO] [stdout]                found fn pointer `unsafe fn(&mut BulkAllocator<'_, B>, NonNull<_>, Layout)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stdout]    --> src/layout_bulk_allocator.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn alloc(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `fn(&LayoutBulkAllocator<'_, B>, Layout) -> std::result::Result<_, _>`
[INFO] [stdout]                found fn pointer `fn(&mut LayoutBulkAllocator<'_, B>, Layout) -> std::result::Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `dealloc` has an incompatible type for trait
[INFO] [stdout]    --> src/layout_bulk_allocator.rs:190:5
[INFO] [stdout]     |
[INFO] [stdout] 190 |     unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `unsafe fn(&LayoutBulkAllocator<'_, B>, NonNull<_>, Layout)`
[INFO] [stdout]                found fn pointer `unsafe fn(&mut LayoutBulkAllocator<'_, B>, NonNull<_>, Layout)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bulk_allocator`
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] 
[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[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stdout]   --> src/backend.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn alloc(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&Backend<'_, B>, std::alloc::Layout) -> std::result::Result<_, _>`
[INFO] [stdout]               found fn pointer `fn(&mut Backend<'_, B>, std::alloc::Layout) -> std::result::Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `dealloc` has an incompatible type for trait
[INFO] [stdout]   --> src/backend.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `unsafe fn(&Backend<'_, B>, std::ptr::NonNull<_>, std::alloc::Layout)`
[INFO] [stdout]               found fn pointer `unsafe fn(&mut Backend<'_, B>, std::ptr::NonNull<_>, std::alloc::Layout)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stdout]    --> src/bulk_allocator.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn alloc(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `fn(&bulk_allocator::BulkAllocator<'_, B>, std::alloc::Layout) -> std::result::Result<_, _>`
[INFO] [stdout]                found fn pointer `fn(&mut bulk_allocator::BulkAllocator<'_, B>, std::alloc::Layout) -> std::result::Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `dealloc` has an incompatible type for trait
[INFO] [stdout]    --> src/bulk_allocator.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 173 |     unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `unsafe fn(&bulk_allocator::BulkAllocator<'_, B>, std::ptr::NonNull<_>, std::alloc::Layout)`
[INFO] [stdout]                found fn pointer `unsafe fn(&mut bulk_allocator::BulkAllocator<'_, B>, std::ptr::NonNull<_>, std::alloc::Layout)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `alloc` has an incompatible type for trait
[INFO] [stdout]    --> src/layout_bulk_allocator.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn alloc(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `fn(&layout_bulk_allocator::LayoutBulkAllocator<'_, B>, std::alloc::Layout) -> std::result::Result<_, _>`
[INFO] [stdout]                found fn pointer `fn(&mut layout_bulk_allocator::LayoutBulkAllocator<'_, B>, std::alloc::Layout) -> std::result::Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `dealloc` has an incompatible type for trait
[INFO] [stdout]    --> src/layout_bulk_allocator.rs:190:5
[INFO] [stdout]     |
[INFO] [stdout] 190 |     unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected fn pointer `unsafe fn(&layout_bulk_allocator::LayoutBulkAllocator<'_, B>, std::ptr::NonNull<_>, std::alloc::Layout)`
[INFO] [stdout]                found fn pointer `unsafe fn(&mut layout_bulk_allocator::LayoutBulkAllocator<'_, B>, std::ptr::NonNull<_>, std::alloc::Layout)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "91ac2ecefd591558123079113b785b076124ce44b36ede2e5cfa9e5bbefe7721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91ac2ecefd591558123079113b785b076124ce44b36ede2e5cfa9e5bbefe7721", kill_on_drop: false }`
[INFO] [stdout] 91ac2ecefd591558123079113b785b076124ce44b36ede2e5cfa9e5bbefe7721