[INFO] updating cached repository https://github.com/leokhachatorians/rustos
[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] 01ec98b28df2234156b1966bac3d6fc57cfb1e18
[INFO] checking leokhachatorians/rustos against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleokhachatorians%2Frustos" "/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/leokhachatorians/rustos on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/leokhachatorians/rustos
[INFO] finished tweaking git repo https://github.com/leokhachatorians/rustos
[INFO] tweaked toml for git repo https://github.com/leokhachatorians/rustos written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/leokhachatorians/rustos already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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[INFO] the lockfile is outdated, regenerating it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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] c8338037ae2bde263e975046b7276f971dbd42f8b99df97973663814e4546dae
[INFO] running `"docker" "start" "-a" "c8338037ae2bde263e975046b7276f971dbd42f8b99df97973663814e4546dae"`
[INFO] [stderr]     Checking spin v0.3.5
[INFO] [stderr]     Checking rlibc v0.1.5
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking multiboot2 v0.8.2 (https://github.com/phil-opp/multiboot2-elf64#cb0284e2)
[INFO] [stderr]     Checking rust_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0583]: file not found for module `memory`
[INFO] [stderr]   --> src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | mod memory;
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: to create the module `memory`, create file "src/memory.rs"
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `memory::FrameAllocator`
[INFO] [stderr]   --> src/lib.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         use memory::FrameAllocator;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ no `FrameAllocator` in `memory`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `AreaFrameAllocator` in `memory`
[INFO] [stderr]   --> src/lib.rs:47:39
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mut frame_allocator = memory::AreaFrameAllocator::new(kernal_start as usize,
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^ could not find `AreaFrameAllocator` in `memory`
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: found duplicate lang item `eh_personality`
[INFO] [stderr]   --> src/lib.rs:63:28
[INFO] [stderr]    |
[INFO] [stderr] 63 | #[lang = "eh_personality"] extern 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:64:1
[INFO] [stderr]    |
[INFO] [stderr] 64 | #[lang = "panic_fmt"] extern fn panic_fmt(fmt: core::fmt::Arguments, file: &str, line: u32) -> ! {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[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:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     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:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |     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:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     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[E0583]: file not found for module `memory`
[INFO] [stderr]   --> src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | mod memory;
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: to create the module `memory`, create file "src/memory.rs"
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `memory::FrameAllocator`
[INFO] [stderr]   --> src/lib.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         use memory::FrameAllocator;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ no `FrameAllocator` in `memory`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `AreaFrameAllocator` in `memory`
[INFO] [stderr]   --> src/lib.rs:47:39
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mut frame_allocator = memory::AreaFrameAllocator::new(kernal_start as usize,
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^ could not find `AreaFrameAllocator` in `memory`
[INFO] [stderr] 
[INFO] [stderr] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stderr]   --> src/lib.rs:64:1
[INFO] [stderr]    |
[INFO] [stderr] 64 | #[lang = "panic_fmt"] extern fn panic_fmt(fmt: core::fmt::Arguments, file: &str, line: u32) -> ! {
[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[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:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     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:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |     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:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     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:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     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[E0308]: mismatched types
[INFO] [stderr]   --> src/vga_buffer.rs:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     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:29:23
[INFO] [stderr]    |
[INFO] [stderr] 29 |                  area.base_addr, area.length);
[INFO] [stderr]    |                       ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:29:39
[INFO] [stderr]    |
[INFO] [stderr] 29 |                  area.base_addr, 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, section.size, section.flags);
[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:35:40
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size, section.flags);
[INFO] [stderr]    |                                        ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size(), section.flags);
[INFO] [stderr]    |                                            ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `flags` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:35:54
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size, section.flags);
[INFO] [stderr]    |                                                      ^^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size, section.flags());
[INFO] [stderr]    |                                                           ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `base_addr` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:29:23
[INFO] [stderr]    |
[INFO] [stderr] 29 |                  area.base_addr, area.length);
[INFO] [stderr]    |                       ^^^^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0616]: field `length` of struct `multiboot2::MemoryArea` is private
[INFO] [stderr]   --> src/lib.rs:29:39
[INFO] [stderr]    |
[INFO] [stderr] 29 |                  area.base_addr, area.length);
[INFO] [stderr]    |                                       ^^^^^^ private field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:38:62
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let kernal_start = elf_sections_tag.sections().map(|s| s.addr).min().unwrap();
[INFO] [stderr]    |                                                              ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:39:60
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let kernel_end = elf_sections_tag.sections().map(|s| s.addr + s.size).max().unwrap();
[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:39:69
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let kernel_end = elf_sections_tag.sections().map(|s| s.addr + s.size).max().unwrap();
[INFO] [stderr]    |                                                                     ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let kernel_end = elf_sections_tag.sections().map(|s| s.addr + s.size()).max().unwrap();
[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:42:54
[INFO] [stderr]    |
[INFO] [stderr] 42 |     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] 42 |     let multiboot_end = multiboot_start + (boot_info.total_size() as usize);
[INFO] [stderr]    |                                                                ^^
[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, section.size, section.flags);
[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:35:40
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size, section.flags);
[INFO] [stderr]    |                                        ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size(), section.flags);
[INFO] [stderr]    |                                            ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0615]: attempted to take value of method `flags` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:35:54
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size, section.flags);
[INFO] [stderr]    |                                                      ^^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 35 |                  section.addr, section.size, section.flags());
[INFO] [stderr]    |                                                           ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:38:62
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let kernal_start = elf_sections_tag.sections().map(|s| s.addr).min().unwrap();
[INFO] [stderr]    |                                                              ^^^^ unknown field
[INFO] [stderr] 
[INFO] [stderr] error[E0609]: no field `addr` on type `multiboot2::ElfSection`
[INFO] [stderr]   --> src/lib.rs:39:60
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let kernel_end = elf_sections_tag.sections().map(|s| s.addr + s.size).max().unwrap();
[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:39:69
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let kernel_end = elf_sections_tag.sections().map(|s| s.addr + s.size).max().unwrap();
[INFO] [stderr]    |                                                                     ^^^^ method, not a field
[INFO] [stderr]    |
[INFO] [stderr] help: use parentheses to call the method
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let kernel_end = elf_sections_tag.sections().map(|s| s.addr + s.size()).max().unwrap();
[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:42:54
[INFO] [stderr]    |
[INFO] [stderr] 42 |     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] 42 |     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:75:29
[INFO] [stderr]    |
[INFO] [stderr] 75 |         unsafe{ self.buffer.get_mut() }
[INFO] [stderr]    |                             ^^^^^^^ method not found in `core::ptr::Unique<vga_buffer::Buffer>`
[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:75:29
[INFO] [stderr]    |
[INFO] [stderr] 75 |         unsafe{ self.buffer.get_mut() }
[INFO] [stderr]    |                             ^^^^^^^ method not found in `core::ptr::Unique<vga_buffer::Buffer>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 20 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0432, E0433, E0522, E0583, E0599, E0609, E0615, E0616...
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: aborting due to 20 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0152, E0308, E0432, E0433, E0522, E0583, E0599, E0609, E0615...
[INFO] [stderr] For more information about an error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `rust_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: could not compile `rust_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c8338037ae2bde263e975046b7276f971dbd42f8b99df97973663814e4546dae"`
[INFO] running `"docker" "rm" "-f" "c8338037ae2bde263e975046b7276f971dbd42f8b99df97973663814e4546dae"`
[INFO] [stdout] c8338037ae2bde263e975046b7276f971dbd42f8b99df97973663814e4546dae
