[INFO] fetching crate bitmaptrie 2.0.0...
[INFO] checking bitmaptrie-2.0.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate bitmaptrie 2.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate bitmaptrie 2.0.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bitmaptrie 2.0.0
[INFO] finished tweaking crates.io crate bitmaptrie 2.0.0
[INFO] tweaked toml for crates.io crate bitmaptrie 2.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 6a3413afc125d836187d91431ea98aaf7c98b99b9aa4b069c480cd7ff9e0b732
[INFO] running `"docker" "start" "-a" "6a3413afc125d836187d91431ea98aaf7c98b99b9aa4b069c480cd7ff9e0b732"`
[INFO] [stderr]     Checking bitmaptrie v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `self::alloc::heap`
[INFO] [stderr]   --> src/comprawvec.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 | use self::alloc::heap::{allocate, reallocate, deallocate};
[INFO] [stderr]    |                  ^^^^ could not find `heap` in `alloc`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:413:62
[INFO] [stderr]     |
[INFO] [stderr] 413 |                         cache.set(depth, local_index, child);;
[INFO] [stderr]     |                                                              ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:443:62
[INFO] [stderr]     |
[INFO] [stderr] 443 |                         cache.set(depth, local_index, child);;
[INFO] [stderr]     |                                                              ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]  --> src/comprawvec.rs:7:35
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::ptr::{copy, read, write, Unique};
[INFO] [stderr]   |                                   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:28:11
[INFO] [stderr]    |
[INFO] [stderr] 28 |     ptrs: Unique<T>,
[INFO] [stderr]    |           ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:38:37
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn allocate(capacity: usize) -> Unique<T> {
[INFO] [stderr]    |                                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             Unique::new(array as *mut T)
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn reallocate(data: &mut Unique<T>, old_capacity: usize, new_capacity: usize) {
[INFO] [stderr]    |                              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             *data = Unique::new(array as *mut T);
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:71:30
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn deallocate(data: &mut Unique<T>, capacity: usize) {
[INFO] [stderr]    |                              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `self::alloc::heap`
[INFO] [stderr]   --> src/comprawvec.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 | use self::alloc::heap::{allocate, reallocate, deallocate};
[INFO] [stderr]    |                  ^^^^ could not find `heap` in `alloc`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:413:62
[INFO] [stderr]     |
[INFO] [stderr] 413 |                         cache.set(depth, local_index, child);;
[INFO] [stderr]     |                                                              ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:443:62
[INFO] [stderr]     |
[INFO] [stderr] 443 |                         cache.set(depth, local_index, child);;
[INFO] [stderr]     |                                                              ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]  --> src/comprawvec.rs:7:35
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::ptr::{copy, read, write, Unique};
[INFO] [stderr]   |                                   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:28:11
[INFO] [stderr]    |
[INFO] [stderr] 28 |     ptrs: Unique<T>,
[INFO] [stderr]    |           ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:38:37
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn allocate(capacity: usize) -> Unique<T> {
[INFO] [stderr]    |                                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             Unique::new(array as *mut T)
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn reallocate(data: &mut Unique<T>, old_capacity: usize, new_capacity: usize) {
[INFO] [stderr]    |                              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             *data = Unique::new(array as *mut T);
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]   --> src/comprawvec.rs:71:30
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn deallocate(data: &mut Unique<T>, capacity: usize) {
[INFO] [stderr]    |                              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             Unique::new(array as *mut T)
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/comprawvec.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn allocate(capacity: usize) -> Unique<T> {
[INFO] [stderr]    |                                     --------- expected `std::ptr::Unique<T>` because of return type
[INFO] [stderr] ...
[INFO] [stderr] 47 |             Unique::new(array as *mut T)
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::ptr::Unique`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::ptr::Unique<T>`
[INFO] [stderr]               found type `std::option::Option<std::ptr::Unique<_>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:58:41
[INFO] [stderr]    |
[INFO] [stderr] 58 |             let array = reallocate(data.as_ptr() as *mut u8,
[INFO] [stderr]    |                                         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             *data = Unique::new(array as *mut T);
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/comprawvec.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             *data = Unique::new(array as *mut T);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::ptr::Unique`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::ptr::Unique<T>`
[INFO] [stderr]               found type `std::option::Option<std::ptr::Unique<_>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:74:29
[INFO] [stderr]    |
[INFO] [stderr] 74 |             deallocate(data.as_ptr() as *mut u8, size, align_of::<T>());
[INFO] [stderr]    |                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:81:35
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let p: *mut T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]    |                                   ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:88:37
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let p: *const T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]    |                                     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]    --> src/comprawvec.rs:111:37
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let ptr: *mut T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]     |                                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]    --> src/comprawvec.rs:138:37
[INFO] [stderr]     |
[INFO] [stderr] 138 |         let ptr: *mut T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]     |                                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `bitmaptrie`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             Unique::new(array as *mut T)
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/comprawvec.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn allocate(capacity: usize) -> Unique<T> {
[INFO] [stderr]    |                                     --------- expected `std::ptr::Unique<T>` because of return type
[INFO] [stderr] ...
[INFO] [stderr] 47 |             Unique::new(array as *mut T)
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::ptr::Unique`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::ptr::Unique<T>`
[INFO] [stderr]               found type `std::option::Option<std::ptr::Unique<_>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:58:41
[INFO] [stderr]    |
[INFO] [stderr] 58 |             let array = reallocate(data.as_ptr() as *mut u8,
[INFO] [stderr]    |                                         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             *data = Unique::new(array as *mut T);
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/comprawvec.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             *data = Unique::new(array as *mut T);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::ptr::Unique`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::ptr::Unique<T>`
[INFO] [stderr]               found type `std::option::Option<std::ptr::Unique<_>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:74:29
[INFO] [stderr]    |
[INFO] [stderr] 74 |             deallocate(data.as_ptr() as *mut u8, size, align_of::<T>());
[INFO] [stderr]    |                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:81:35
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let p: *mut T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]    |                                   ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]   --> src/comprawvec.rs:88:37
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let p: *const T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]    |                                     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]    --> src/comprawvec.rs:111:37
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let ptr: *mut T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]     |                                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]    --> src/comprawvec.rs:138:37
[INFO] [stderr]     |
[INFO] [stderr] 138 |         let ptr: *mut T = self.ptrs.as_ptr().offset(index as isize);
[INFO] [stderr]     |                                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `bitmaptrie`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6a3413afc125d836187d91431ea98aaf7c98b99b9aa4b069c480cd7ff9e0b732"`
[INFO] running `"docker" "rm" "-f" "6a3413afc125d836187d91431ea98aaf7c98b99b9aa4b069c480cd7ff9e0b732"`
[INFO] [stdout] 6a3413afc125d836187d91431ea98aaf7c98b99b9aa4b069c480cd7ff9e0b732