[INFO] fetching crate rusty-hermit 0.3.49...
[INFO] building rusty-hermit-0.3.49 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate rusty-hermit 0.3.49 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rusty-hermit 0.3.49 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking crates.io crate rusty-hermit 0.3.49
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rusty-hermit 0.3.49
[INFO] tweaked toml for crates.io crate rusty-hermit 0.3.49 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded raw-cpuid v9.0.0
[INFO] [stderr]   Downloaded multiboot v0.6.0
[INFO] [stderr]   Downloaded x86 v0.39.0
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21999e5092ecd702e18084e5004994d02644a5bd50d52b6f53a5a3d32c379322
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "21999e5092ecd702e18084e5004994d02644a5bd50d52b6f53a5a3d32c379322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21999e5092ecd702e18084e5004994d02644a5bd50d52b6f53a5a3d32c379322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21999e5092ecd702e18084e5004994d02644a5bd50d52b6f53a5a3d32c379322", kill_on_drop: false }`
[INFO] [stdout] 21999e5092ecd702e18084e5004994d02644a5bd50d52b6f53a5a3d32c379322
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 835bad2380c507bbd309d09f25f1e1589d61b582c698d469f5c8d6089922e76a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "835bad2380c507bbd309d09f25f1e1589d61b582c698d469f5c8d6089922e76a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling x86 v0.39.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling rusty-hermit v0.3.49 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling raw-cpuid v9.0.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling multiboot v0.6.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::alloc::Layout`
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | use alloc::alloc::Layout;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::alloc::GlobalAlloc`
[INFO] [stdout]   --> src/lib.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | use core::alloc::GlobalAlloc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `arch::percore::*`
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | use arch::percore::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mm::allocator::LockedHeap`
[INFO] [stdout]   --> src/lib.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | use mm::allocator::LockedHeap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cr0`, `cr0_write`, `cr0`, `cr4`
[INFO] [stdout]   --> src/arch/x86_64/kernel/mod.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 | use x86::controlregs::{cr0, cr0_write, cr4, Cr0};
[INFO] [stdout]    |                        ^^^  ^^^^^^^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::kernel_message_buffer`
[INFO] [stdout]   --> src/arch/x86_64/kernel/mod.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::kernel_message_buffer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr`
[INFO] [stdout]   --> src/arch/x86_64/kernel/apic.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use core::ptr;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::x86::bits64::rflags`
[INFO] [stdout]   --> src/arch/x86_64/kernel/irq.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::x86::bits64::rflags;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `idt`
[INFO] [stdout]   --> src/arch/x86_64/kernel/processor.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::arch::x86_64::kernel::{idt, irq, pic, pit, BOOT_INFO};
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HugePageSize`, `LargePageSize`
[INFO] [stdout]   --> src/mm/mod.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |     BasePageSize, HugePageSize, LargePageSize, PageSize, PageTableEntryFlags,
[INFO] [stdout]    |                   ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::arch::mm::physicalmem::total_memory_size`
[INFO] [stdout]   --> src/mm/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use crate::arch::mm::physicalmem::total_memory_size;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::environment`
[INFO] [stdout]   --> src/mm/mod.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::environment;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::mem`
[INFO] [stdout]   --> src/mm/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use core::mem;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/arch/x86_64/kernel/scheduler.rs:330:26
[INFO] [stdout]     |
[INFO] [stdout] 330 | extern "C" fn task_start(func: extern "C" fn(usize), arg: usize, user_stack: u64) {}
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/arch/x86_64/kernel/scheduler.rs:330:54
[INFO] [stdout]     |
[INFO] [stdout] 330 | extern "C" fn task_start(func: extern "C" fn(usize), arg: usize, user_stack: u64) {}
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_stack`
[INFO] [stdout]    --> src/arch/x86_64/kernel/scheduler.rs:330:66
[INFO] [stdout]     |
[INFO] [stdout] 330 | extern "C" fn task_start(func: extern "C" fn(usize), arg: usize, user_stack: u64) {}
[INFO] [stdout]     |                                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]   --> src/syscalls/fs.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |             mounts: BTreeMap::new(),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]    = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]   --> src/syscalls/fs.rs:70:11
[INFO] [stdout]    |
[INFO] [stdout] 70 |             files: BTreeMap::new(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]    = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-hermit`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "835bad2380c507bbd309d09f25f1e1589d61b582c698d469f5c8d6089922e76a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835bad2380c507bbd309d09f25f1e1589d61b582c698d469f5c8d6089922e76a", kill_on_drop: false }`
[INFO] [stdout] 835bad2380c507bbd309d09f25f1e1589d61b582c698d469f5c8d6089922e76a
