[INFO] updating cached repository https://github.com/jonfk/rust-os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a232bfa085813d9a5a6b56615ec73be906773e80
[INFO] checking jonfk/rust-os against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonfk%2Frust-os" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonfk/rust-os on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jonfk/rust-os
[INFO] finished tweaking git repo https://github.com/jonfk/rust-os
[INFO] tweaked toml for git repo https://github.com/jonfk/rust-os written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/jonfk/rust-os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-1/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/phil-opp/multiboot2-elf64`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] a6ff8cb7da3791ea4f07916f7f45db054482c2f5f48e9528cd0e0928d418dc69
[INFO] running `"docker" "start" "-a" "a6ff8cb7da3791ea4f07916f7f45db054482c2f5f48e9528cd0e0928d418dc69"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking rlibc v0.1.5
[INFO] [stderr]     Checking spin v0.3.5
[INFO] [stderr]     Checking multiboot2 v0.8.2 (https://github.com/phil-opp/multiboot2-elf64#cb0284e2)
[INFO] [stderr]     Checking blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stderr]   --> src/lib.rs:82:1
[INFO] [stderr]    |
[INFO] [stderr] 82 | #[lang = "panic_fmt"]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stderr] 
[INFO] [stderr] error: `#[panic_handler]` function required, but not found
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: found duplicate lang item `eh_personality`
[INFO] [stderr]   --> src/lib.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | extern "C" fn eh_personality() {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the lang item is first defined in crate `panic_unwind` (which `std` depends on)
[INFO] [stderr] 
[INFO] [stderr] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stderr]   --> src/lib.rs:82:1
[INFO] [stderr]    |
[INFO] [stderr] 82 | #[lang = "panic_fmt"]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stderr] 
[INFO] [stderr] error[E0106]: missing lifetime specifier
[INFO] [stderr]  --> src/memory/area_frame_allocator.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 |     areas: MemoryAreaIter,
[INFO] [stderr]   |            ^^^^^^^^^^^^^^ expected named lifetime parameter
[INFO] [stderr]   |
[INFO] [stderr] help: consider introducing a named lifetime parameter
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct AreaFrameAllocator<'a> {
[INFO] [stderr] 5 |     next_free_frame: Frame,
[INFO] [stderr] 6 |     current_area: Option<&'static MemoryArea>,
[INFO] [stderr] 7 |     areas: MemoryAreaIter<'a>,
[INFO] [stderr]   |
[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/vga_buffer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::ptr::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/vga_buffer.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buffer: unsafe { Unique::new(0xb8000 as *mut _) },
[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/vga_buffer.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |     buffer: Unique<Buffer>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0106]: missing lifetime specifier
[INFO] [stderr]  --> src/memory/area_frame_allocator.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 |     areas: MemoryAreaIter,
[INFO] [stderr]   |            ^^^^^^^^^^^^^^ expected named lifetime parameter
[INFO] [stderr]   |
[INFO] [stderr] help: consider introducing a named lifetime parameter
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct AreaFrameAllocator<'a> {
[INFO] [stderr] 5 |     next_free_frame: Frame,
[INFO] [stderr] 6 |     current_area: Option<&'static MemoryArea>,
[INFO] [stderr] 7 |     areas: MemoryAreaIter<'a>,
[INFO] [stderr]   |
[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/vga_buffer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::ptr::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/vga_buffer.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buffer: unsafe { Unique::new(0xb8000 as *mut _) },
[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/vga_buffer.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |     buffer: Unique<Buffer>,
[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/vga_buffer.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buffer: unsafe { Unique::new(0xb8000 as *mut _) },
[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/vga_buffer.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buffer: unsafe { Unique::new(0xb8000 as *mut _) },
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `core::ptr::Unique`, found enum `core::option::Option`
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected struct `core::ptr::Unique<vga_buffer::Buffer>`
[INFO] [stderr]                found enum `core::option::Option<core::ptr::Unique<_>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:28:23
[INFO] [stderr]    |
[INFO] [stderr] 28 |                  area.base_addr,
[INFO] [stderr]    |                       ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:29:23
[INFO] [stderr]    |
[INFO] [stderr] 29 |                  area.length);
[INFO] [stderr]    |                       ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:35:26
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr,
[INFO] [stderr]    |                          ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `size` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:36:26
[INFO] [stderr]    |
[INFO] [stderr] 36 |                  section.size,
[INFO] [stderr]    |                          ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 36 |                  section.size(),
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `flags` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:37:26
[INFO] [stderr]    |
[INFO] [stderr] 37 |                  section.flags);
[INFO] [stderr]    |                          ^^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 37 |                  section.flags());
[INFO] [stderr]    |                               ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:41:51
[INFO] [stderr]    |
[INFO] [stderr] 41 | ...                   .map(|s| s.addr)
[INFO] [stderr]    |                                  ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:45:49
[INFO] [stderr]    |
[INFO] [stderr] 45 | ...                   .map(|s| s.addr + s.size)
[INFO] [stderr]    |                                  ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'ptr_internals'
[INFO] [stderr]  --> src/vga_buffer.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buffer: unsafe { Unique::new(0xb8000 as *mut _) },
[INFO] [stderr]   |                      ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: add `#![feature(ptr_internals)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `size` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:45:58
[INFO] [stderr]    |
[INFO] [stderr] 45 | ...                   .map(|s| s.addr + s.size)
[INFO] [stderr]    |                                           ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 45 |                                      .map(|s| s.addr + s.size())
[INFO] [stderr]    |                                                              ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `total_size` on type `multiboot2::BootInformation`
[INFO] [stderr]   --> src/lib.rs:50:54
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let multiboot_end = multiboot_start + (boot_info.total_size as usize);
[INFO] [stderr]    |                                                      ^^^^^^^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let multiboot_end = multiboot_start + (boot_info.total_size() as usize);
[INFO] [stderr]    |                                                                ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `get_mut` found for struct `core::ptr::Unique<vga_buffer::Buffer>` in the current scope
[INFO] [stderr]   --> src/vga_buffer.rs:70:30
[INFO] [stderr]    |
[INFO] [stderr] 70 |         unsafe { self.buffer.get_mut() }
[INFO] [stderr]    |                              ^^^^^^^ method not found in `core::ptr::Unique<vga_buffer::Buffer>`
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:23:36
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                    ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:23:53
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                                     ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0621]: explicit lifetime required in the type of `memory_areas`
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:63:20
[INFO] [stderr]    |
[INFO] [stderr] 58 |                memory_areas: MemoryAreaIter)
[INFO] [stderr]    |                              -------------- help: add explicit lifetime `'static` to the type of `memory_areas`: `multiboot2::MemoryAreaIter<'static>`
[INFO] [stderr] ...
[INFO] [stderr] 63 |             areas: memory_areas,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ lifetime `'static` required
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:77:56
[INFO] [stderr]    |
[INFO] [stderr] 77 | ...                   let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                          ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:77:73
[INFO] [stderr]    |
[INFO] [stderr] 77 | ...                   let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                                           ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:81:57
[INFO] [stderr]    |
[INFO] [stderr] 81 | ...                   .min_by_key(|area| area.base_addr);
[INFO] [stderr]    |                                               ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:84:62
[INFO] [stderr]    |
[INFO] [stderr] 84 |             let start_frame = Frame::containing_address(area.base_addr as usize);
[INFO] [stderr]    |                                                              ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 25 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0106, E0308, E0522, E0599, E0609, E0615, E0616, E0621, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0106`.
[INFO] [stderr] error: could not compile `blog_os`.
[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] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/vga_buffer.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buffer: unsafe { Unique::new(0xb8000 as *mut _) },
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `core::ptr::Unique`, found enum `core::option::Option`
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected struct `core::ptr::Unique<vga_buffer::Buffer>`
[INFO] [stderr]                found enum `core::option::Option<core::ptr::Unique<_>>`
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:28:23
[INFO] [stderr]    |
[INFO] [stderr] 28 |                  area.base_addr,
[INFO] [stderr]    |                       ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:29:23
[INFO] [stderr]    |
[INFO] [stderr] 29 |                  area.length);
[INFO] [stderr]    |                       ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:35:26
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr,
[INFO] [stderr]    |                          ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `size` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:36:26
[INFO] [stderr]    |
[INFO] [stderr] 36 |                  section.size,
[INFO] [stderr]    |                          ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 36 |                  section.size(),
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `flags` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:37:26
[INFO] [stderr]    |
[INFO] [stderr] 37 |                  section.flags);
[INFO] [stderr]    |                          ^^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 37 |                  section.flags());
[INFO] [stderr]    |                               ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:41:51
[INFO] [stderr]    |
[INFO] [stderr] 41 | ...                   .map(|s| s.addr)
[INFO] [stderr]    |                                  ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:45:49
[INFO] [stderr]    |
[INFO] [stderr] 45 | ...                   .map(|s| s.addr + s.size)
[INFO] [stderr]    |                                  ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `size` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:45:58
[INFO] [stderr]    |
[INFO] [stderr] 45 | ...                   .map(|s| s.addr + s.size)
[INFO] [stderr]    |                                           ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 45 |                                      .map(|s| s.addr + s.size())
[INFO] [stderr]    |                                                              ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `total_size` on type `multiboot2::BootInformation`
[INFO] [stderr]   --> src/lib.rs:50:54
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let multiboot_end = multiboot_start + (boot_info.total_size as usize);
[INFO] [stderr]    |                                                      ^^^^^^^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let multiboot_end = multiboot_start + (boot_info.total_size() as usize);
[INFO] [stderr]    |                                                                ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `get_mut` found for struct `core::ptr::Unique<vga_buffer::Buffer>` in the current scope
[INFO] [stderr]   --> src/vga_buffer.rs:70:30
[INFO] [stderr]    |
[INFO] [stderr] 70 |         unsafe { self.buffer.get_mut() }
[INFO] [stderr]    |                              ^^^^^^^ method not found in `core::ptr::Unique<vga_buffer::Buffer>`
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:23:36
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                    ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:23:53
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                                     ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0621]: explicit lifetime required in the type of `memory_areas`
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:63:20
[INFO] [stderr]    |
[INFO] [stderr] 58 |                memory_areas: MemoryAreaIter)
[INFO] [stderr]    |                              -------------- help: add explicit lifetime `'static` to the type of `memory_areas`: `multiboot2::MemoryAreaIter<'static>`
[INFO] [stderr] ...
[INFO] [stderr] 63 |             areas: memory_areas,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ lifetime `'static` required
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:77:56
[INFO] [stderr]    |
[INFO] [stderr] 77 | ...                   let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                          ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:77:73
[INFO] [stderr]    |
[INFO] [stderr] 77 | ...                   let address = area.base_addr + area.length - 1;
[INFO] [stderr]    |                                                           ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:81:57
[INFO] [stderr]    |
[INFO] [stderr] 81 | ...                   .min_by_key(|area| area.base_addr);
[INFO] [stderr]    |                                               ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/memory/area_frame_allocator.rs:84:62
[INFO] [stderr]    |
[INFO] [stderr] 84 |             let start_frame = Frame::containing_address(area.base_addr as usize);
[INFO] [stderr]    |                                                              ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 25 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0106, E0152, E0308, E0522, E0599, E0609, E0615, E0616, E0621...
[INFO] [stderr] For more information about an error, try `rustc --explain E0106`.
[INFO] [stderr] error: could not compile `blog_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a6ff8cb7da3791ea4f07916f7f45db054482c2f5f48e9528cd0e0928d418dc69"`
[INFO] running `"docker" "rm" "-f" "a6ff8cb7da3791ea4f07916f7f45db054482c2f5f48e9528cd0e0928d418dc69"`
[INFO] [stdout] a6ff8cb7da3791ea4f07916f7f45db054482c2f5f48e9528cd0e0928d418dc69