[INFO] updating cached repository https://github.com/mdibaiee/mahdi-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] f4a8ca726129ef92e8172d2418eb6017b2d65f43
[INFO] checking mdibaiee/mahdi-os against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Fmahdi-os" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdibaiee/mahdi-os on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mdibaiee/mahdi-os
[INFO] finished tweaking git repo https://github.com/mdibaiee/mahdi-os
[INFO] tweaked toml for git repo https://github.com/mdibaiee/mahdi-os written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mdibaiee/mahdi-os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-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] f7b5c2f3178db44741b1047d85e05bb1b752dc4eb5997e5e7bb841b66c8b7b3c
[INFO] running `"docker" "start" "-a" "f7b5c2f3178db44741b1047d85e05bb1b752dc4eb5997e5e7bb841b66c8b7b3c"`
[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 v0.8.1 (https://github.com/phil-opp/multiboot2-elf64#14aa3464)
[INFO] [stderr]     Checking mahdi_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unknown lint: `dead_Code`
[INFO] [stderr]   --> src/memory/paging/table.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[allow(dead_Code)]
[INFO] [stderr]    |         ^^^^^^^^^ help: did you mean: `dead_code`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `dead_Code`
[INFO] [stderr]   --> src/memory/paging/table.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[allow(dead_Code)]
[INFO] [stderr]    |         ^^^^^^^^^ help: did you mean: `dead_code`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memory/paging/entry.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | / bitflags! {
[INFO] [stderr] 36 | |     pub flags EntryFlags: u64 {
[INFO] [stderr] 37 | |         const PRESENT           = 1 << 0,
[INFO] [stderr] 38 | |         const WRITABLE                    = 1 << 1,
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     }
[INFO] [stderr] 48 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memory/paging/entry.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | / bitflags! {
[INFO] [stderr] 36 | |     pub flags EntryFlags: u64 {
[INFO] [stderr] 37 | |         const PRESENT           = 1 << 0,
[INFO] [stderr] 38 | |         const WRITABLE                    = 1 << 1,
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     }
[INFO] [stderr] 48 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `memory::PAGE_SIZE`
[INFO] [stderr]  --> src/memory/paging/entry.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use memory::PAGE_SIZE;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `HUGE_PAGE` is imported redundantly
[INFO] [stderr]   --> src/memory/paging/mod.rs:31:6
[INFO] [stderr]    |
[INFO] [stderr] 6  | pub use self::entry::*;
[INFO] [stderr]    |         -------------- the item `HUGE_PAGE` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 31 |     use self::entry::HUGE_PAGE;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: duplicate lang item found: `eh_personality`.
[INFO] [stderr]   --> src/lib.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 | #[lang = "eh_personality"] extern fn eh_personality() {}
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: 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:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | #[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:52:10
[INFO] [stderr]    |
[INFO] [stderr] 52 |     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:122:19
[INFO] [stderr]     |
[INFO] [stderr] 122 |     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[E0106]: missing lifetime specifier
[INFO] [stderr]  --> src/memory/area_frame_allocator.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     areas: MemoryAreaIter,
[INFO] [stderr]   |            ^^^^^^^^^^^^^^ expected lifetime parameter
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0106, E0152, E0522, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0106`.
[INFO] [stderr] error: could not compile `mahdi_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "f7b5c2f3178db44741b1047d85e05bb1b752dc4eb5997e5e7bb841b66c8b7b3c"`
[INFO] running `"docker" "rm" "-f" "f7b5c2f3178db44741b1047d85e05bb1b752dc4eb5997e5e7bb841b66c8b7b3c"`
[INFO] [stdout] f7b5c2f3178db44741b1047d85e05bb1b752dc4eb5997e5e7bb841b66c8b7b3c