[INFO] fetching crate dora 0.0.2...
[INFO] testing dora-0.0.2 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate dora 0.0.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate dora 0.0.2 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dora 0.0.2
[INFO] finished tweaking crates.io crate dora 0.0.2
[INFO] tweaked toml for crates.io crate dora 0.0.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate dora 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ucd-util v0.1.5
[INFO] [stderr]   Downloaded docopt v0.7.0
[INFO] [stderr]   Downloaded dora-parser v0.0.2
[INFO] [stderr]   Downloaded parking_lot v0.6.4
[INFO] [stderr]   Downloaded backtrace v0.3.38
[INFO] [stderr]   Downloaded rand v0.7.2
[INFO] [stderr]   Downloaded cc v1.0.45
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded lock_api v0.3.1
[INFO] [stderr]   Downloaded bitflags v1.2.0
[INFO] [stderr]   Downloaded wasi v0.7.0
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded capstone v0.6.0
[INFO] [stderr]   Downloaded capstone-sys v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7200c163fcf65c21fce6194831f0040a150b71c49eb83dba2c289de4e8d8ee6e
[INFO] running `Command { std: "docker" "start" "-a" "7200c163fcf65c21fce6194831f0040a150b71c49eb83dba2c289de4e8d8ee6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7200c163fcf65c21fce6194831f0040a150b71c49eb83dba2c289de4e8d8ee6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7200c163fcf65c21fce6194831f0040a150b71c49eb83dba2c289de4e8d8ee6e", kill_on_drop: false }`
[INFO] [stdout] 7200c163fcf65c21fce6194831f0040a150b71c49eb83dba2c289de4e8d8ee6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8032e7277017f09f0dd98f73b2e110a825315df75a475f51714ba4a40611722
[INFO] running `Command { std: "docker" "start" "-a" "d8032e7277017f09f0dd98f73b2e110a825315df75a475f51714ba4a40611722", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling lock_api v0.3.1
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling dora v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling capstone-sys v0.10.0
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling backtrace v0.3.38
[INFO] [stderr]    Compiling dora-parser v0.0.2
[INFO] [stderr]    Compiling docopt v0.7.0
[INFO] [stderr]    Compiling capstone v0.6.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/gc.rs:71:36
[INFO] [stdout]    |
[INFO] [stdout] 71 |             CollectorName::Zero => box ZeroCollector::new(args),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 71 |             CollectorName::Zero => Box::new(ZeroCollector::new(args)),
[INFO] [stdout]    |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/gc.rs:72:39
[INFO] [stdout]    |
[INFO] [stdout] 72 |             CollectorName::Compact => box MarkCompactCollector::new(args),
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 72 |             CollectorName::Compact => Box::new(MarkCompactCollector::new(args)),
[INFO] [stdout]    |                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/gc.rs:73:36
[INFO] [stdout]    |
[INFO] [stdout] 73 |             CollectorName::Copy => box CopyCollector::new(args),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 73 |             CollectorName::Copy => Box::new(CopyCollector::new(args)),
[INFO] [stdout]    |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/gc.rs:74:37
[INFO] [stdout]    |
[INFO] [stdout] 74 |             CollectorName::Sweep => box SweepCollector::new(args),
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 74 |             CollectorName::Sweep => Box::new(SweepCollector::new(args)),
[INFO] [stdout]    |                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/gc.rs:75:38
[INFO] [stdout]    |
[INFO] [stdout] 75 |             CollectorName::Swiper => box Swiper::new(args),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 75 |             CollectorName::Swiper => Box::new(Swiper::new(args)),
[INFO] [stdout]    |                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/gc.rs:76:43
[INFO] [stdout]    |
[INFO] [stdout] 76 |             CollectorName::SweepSwiper => box SweepSwiper::new(args),
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 76 |             CollectorName::SweepSwiper => Box::new(SweepSwiper::new(args)),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/handle.rs:61:22
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let buffer = box HandleBuffer::new();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let buffer = Box::new(HandleBuffer::new());
[INFO] [stdout]    |                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/handle.rs:88:27
[INFO] [stdout]    |
[INFO] [stdout] 88 |         self.buffers.push(box HandleBuffer::new());
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 88 |         self.buffers.push(Box::new(HandleBuffer::new()));
[INFO] [stdout]    |                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::alloc::Alloc`
[INFO] [stdout]  --> src/vtable.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::alloc::Alloc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^ no `Alloc` in `alloc`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this variant instead
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::baseline::fct::Comment::Alloc;
[INFO] [stdout]   |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]   --> src/driver/cmd.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 | #[derive(Debug, RustcDecodable)]
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]    --> src/driver/cmd.rs:224:30
[INFO] [stdout]     |
[INFO] [stdout] 224 | #[derive(Copy, Clone, Debug, RustcDecodable)]
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]    --> src/driver/cmd.rs:234:30
[INFO] [stdout]     |
[INFO] [stdout] 234 | #[derive(Copy, Clone, Debug, RustcDecodable)]
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]    --> src/driver/cmd.rs:240:30
[INFO] [stdout]     |
[INFO] [stdout] 240 | #[derive(Copy, Clone, Debug, RustcDecodable)]
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: include macro expected single expression in source
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/dora-73d377439825c56d/out/dora_stdlib_bundle.rs:31:2
[INFO] [stdout]    |
[INFO] [stdout] 31 | ];
[INFO] [stdout]    |  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(incomplete_include)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/dseg.rs:56:45
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         *(entry_ptr as *mut (*const u8)) = v;
[INFO] [stdout]    |                                             ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -                         *(entry_ptr as *mut (*const u8)) = v;
[INFO] [stdout] 56 +                         *(entry_ptr as *mut *const u8) = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]     --> src/typeck/expr.rs:2383:31
[INFO] [stdout]      |
[INFO] [stdout] 2383 |             IntSuffix::Int => (1u64 << 31),
[INFO] [stdout]      |                               ^          ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2383 -             IntSuffix::Int => (1u64 << 31),
[INFO] [stdout] 2383 +             IntSuffix::Int => 1u64 << 31,
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]     --> src/typeck/expr.rs:2384:32
[INFO] [stdout]      |
[INFO] [stdout] 2384 |             IntSuffix::Long => (1u64 << 63),
[INFO] [stdout]      |                                ^          ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 2384 -             IntSuffix::Long => (1u64 << 63),
[INFO] [stdout] 2384 +             IntSuffix::Long => 1u64 << 63,
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(allocator_api)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `asm` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/gc/pmarking.rs:108:22
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     .compare_and_swap(nworkers, nworkers + 1, Ordering::SeqCst);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/gc/swiper/young.rs:448:18
[INFO] [stdout]     |
[INFO] [stdout] 448 |                 .compare_and_swap(old_committed, new_committed, Ordering::SeqCst);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/object.rs:120:18
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 .compare_and_swap(expected_vtblptr.to_usize(), fwd, Ordering::SeqCst);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/object.rs:144:18
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 .compare_and_swap(expected_vtblptr.to_usize(), fwd, Ordering::SeqCst);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `alloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stdout]    --> src/vtable.rs:39:28
[INFO] [stdout]     |
[INFO] [stdout] 39  |             let ptr = heap.alloc(lay).expect("could not allocate").as_ptr() as *mut VTable;
[INFO] [stdout]     |                            ^^^^^ method not found in `Global`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout] note: `Collector` defines an item `alloc`, perhaps you need to implement it
[INFO] [stdout]    --> src/gc.rs:168:1
[INFO] [stdout]     |
[INFO] [stdout] 168 | trait Collector {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `dealloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stdout]   --> src/vtable.rs:81:18
[INFO] [stdout]    |
[INFO] [stdout] 81 |             heap.dealloc(ptr, lay);
[INFO] [stdout]    |                  ^^^^^^^ method not found in `Global`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `alloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stdout]    --> src/vtable.rs:172:22
[INFO] [stdout]     |
[INFO] [stdout] 172 |                 heap.alloc(lay).expect("could not allocate").as_ptr() as *const _;
[INFO] [stdout]     |                      ^^^^^ method not found in `Global`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout] note: `Collector` defines an item `alloc`, perhaps you need to implement it
[INFO] [stdout]    --> src/gc.rs:168:1
[INFO] [stdout]     |
[INFO] [stdout] 168 | trait Collector {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `dealloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stdout]    --> src/vtable.rs:187:18
[INFO] [stdout]     |
[INFO] [stdout] 187 |             heap.dealloc(ptr, lay);
[INFO] [stdout]     |                  ^^^^^^^ method not found in `Global`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors; 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0557, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dora` (lib) due to 17 previous errors; 13 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d8032e7277017f09f0dd98f73b2e110a825315df75a475f51714ba4a40611722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8032e7277017f09f0dd98f73b2e110a825315df75a475f51714ba4a40611722", kill_on_drop: false }`
[INFO] [stdout] d8032e7277017f09f0dd98f73b2e110a825315df75a475f51714ba4a40611722
