[INFO] updating cached repository https://github.com/stisol/Sol_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] 8a56e54e0f2084516b07c06e731cf00b6e3fb173
[INFO] checking stisol/Sol_OS against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstisol%2FSol_OS" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stisol/Sol_OS 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/stisol/Sol_OS
[INFO] finished tweaking git repo https://github.com/stisol/Sol_OS
[INFO] tweaked toml for git repo https://github.com/stisol/Sol_OS written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/stisol/Sol_OS already has a lockfile, it will not be regenerated
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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] 8d690665c7e7acfbf76ad3c5f30333f92d0700089232e092e1c3b711120aa4dc
[INFO] running `"docker" "start" "-a" "8d690665c7e7acfbf76ad3c5f30333f92d0700089232e092e1c3b711120aa4dc"`
[INFO] [stderr]     Checking volatile v0.2.3
[INFO] [stderr]     Checking spin v0.4.5
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking sol_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stderr]   --> src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | #[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[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:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |     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': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]    --> src/vga_buffer.rs:147:22
[INFO] [stderr]     |
[INFO] [stderr] 147 |     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'
[INFO] [stderr]    --> src/vga_buffer.rs:147:22
[INFO] [stderr]     |
[INFO] [stderr] 147 |     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:147:22
[INFO] [stderr]     |
[INFO] [stderr] 147 |     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[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:98:29
[INFO] [stderr]    |
[INFO] [stderr] 98 |         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 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0522, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `sol_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[E0152]: found duplicate lang item `eh_personality`
[INFO] [stderr]   --> src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | 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:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | #[lang = "panic_fmt"]
[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:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |     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': use `NonNull` instead and consider `PhantomData<T>` (if you also use `#[may_dangle]`), `Send`, and/or `Sync`
[INFO] [stderr]    --> src/vga_buffer.rs:147:22
[INFO] [stderr]     |
[INFO] [stderr] 147 |     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'
[INFO] [stderr]    --> src/vga_buffer.rs:147:22
[INFO] [stderr]     |
[INFO] [stderr] 147 |     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:147:22
[INFO] [stderr]     |
[INFO] [stderr] 147 |     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[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:98:29
[INFO] [stderr]    |
[INFO] [stderr] 98 |         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 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0152, E0308, E0522, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `sol_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8d690665c7e7acfbf76ad3c5f30333f92d0700089232e092e1c3b711120aa4dc"`
[INFO] running `"docker" "rm" "-f" "8d690665c7e7acfbf76ad3c5f30333f92d0700089232e092e1c3b711120aa4dc"`
[INFO] [stdout] 8d690665c7e7acfbf76ad3c5f30333f92d0700089232e092e1c3b711120aa4dc
