[INFO] cloning repository https://github.com/BigBillZhao/xv6-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BigBillZhao/xv6-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBigBillZhao%2Fxv6-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBigBillZhao%2Fxv6-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90dd3816def980313ad2b7b63649f1c9d502216c
[INFO] building BigBillZhao/xv6-rust against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBigBillZhao%2Fxv6-rust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BigBillZhao/xv6-rust 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-2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/BigBillZhao/xv6-rust
[INFO] finished tweaking git repo https://github.com/BigBillZhao/xv6-rust
[INFO] tweaked toml for git repo https://github.com/BigBillZhao/xv6-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/BigBillZhao/xv6-rust already has a lockfile, it will not be regenerated
[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 bit_field v0.10.1
[INFO] [stderr]   Downloaded array-macro v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d6a95a85385003cbd7c42dfe2ab6a6bdda165b61984d44a4798014c4ba2aa245
[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" "d6a95a85385003cbd7c42dfe2ab6a6bdda165b61984d44a4798014c4ba2aa245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6a95a85385003cbd7c42dfe2ab6a6bdda165b61984d44a4798014c4ba2aa245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6a95a85385003cbd7c42dfe2ab6a6bdda165b61984d44a4798014c4ba2aa245", kill_on_drop: false }`
[INFO] [stdout] d6a95a85385003cbd7c42dfe2ab6a6bdda165b61984d44a4798014c4ba2aa245
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dd3cc30d0ca15d071b5276e2690ddeda8d2201d7050191a9fc3359a41213a6c4
[INFO] running `Command { std: "docker" "start" "-a" "dd3cc30d0ca15d071b5276e2690ddeda8d2201d7050191a9fc3359a41213a6c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling array-macro v2.0.0
[INFO] [stderr]    Compiling xv6-rust-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hidden lifetime parameters in types are deprecated
[INFO] [stdout]   --> src/print.rs:48:18
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]    |                  ^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![warn(rust_2018_idioms)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hidden lifetime parameters in types are deprecated
[INFO] [stdout]   --> src/memory/kalloc.rs:66:27
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn lock(&self) -> spin::MutexGuard<A> {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^ help: indicate the anonymous lifetime: `spin::MutexGuard<'_, A>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/consts/vm.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/memory/pagetable.rs:36:18
[INFO] [stdout]    |
[INFO] [stdout] 36 |         for i in (0..512) {
[INFO] [stdout]    |                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProcState`
[INFO] [stdout]  --> src/trap.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::proc::{ProcState, my_proc_index, yield_proc, proc_list, cpu_id};
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `RUNNING` is named the same as one of the variants of the type `ProcState`
[INFO] [stdout]   --> src/trap.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             RUNNING =>{
[INFO] [stdout]    |             ^^^^^^^ help: to match on the variant, qualify the path: `ProcState::RUNNING`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/trap.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             RUNNING =>{
[INFO] [stdout]    |             ------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 52 |             _ => ()
[INFO] [stdout]    |             ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nextpid` is never read
[INFO] [stdout]    --> src/proc/mod.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     nextpid += 1;
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scause`
[INFO] [stdout]   --> src/trap.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let scause = scause::read();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scause`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `RUNNING`
[INFO] [stdout]   --> src/trap.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             RUNNING =>{
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_RUNNING`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/register/mod.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub unsafe fn read() -> usize {
[INFO] [stdout]     |     ----------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] 108 |         let ret: usize;
[INFO] [stdout] 109 |         unsafe {llvm_asm!("csrr $0, scause":"=r"(ret):::"volatile");}
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/memory/mod.rs:76:34
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub unsafe fn kvminit() {
[INFO] [stdout]    | ----------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 76 |         let pa: Box<PageTable> = unsafe { Box::new_zeroed().assume_init() };
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/memory/mod.rs:100:43
[INFO] [stdout]     |
[INFO] [stdout] 92  | unsafe fn walk_alloc(pagetable: &mut PageTable, va: VirtualAddr) -> * mut PTE {
[INFO] [stdout]     | ----------------------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 100 |             let sub_pgt: Box<PageTable> = unsafe { Box::new_zeroed().assume_init() };
[INFO] [stdout]     |                                           ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 21 | |         VirtualAddr::from(UART0),
[INFO] [stdout] 22 | |         PhysAddr::from(UART0),
[INFO] [stdout] 23 | |         PGSIZE,
[INFO] [stdout] 24 | |         PteFlag::R | PteFlag::W
[INFO] [stdout] 25 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 29 | |         VirtualAddr::from(VIRTIO0),
[INFO] [stdout] 30 | |         PhysAddr::from(VIRTIO0),
[INFO] [stdout] 31 | |         PGSIZE,
[INFO] [stdout] 32 | |         PteFlag::R | PteFlag::W
[INFO] [stdout] 33 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 37 | |         VirtualAddr::from(PLIC),
[INFO] [stdout] 38 | |         PhysAddr::from(PLIC),
[INFO] [stdout] 39 | |         PLIC_SIZE,
[INFO] [stdout] 40 | |         PteFlag::R | PteFlag::W
[INFO] [stdout] 41 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | /     KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 49 | |         VirtualAddr::from(KERNBASE),
[INFO] [stdout] 50 | |         PhysAddr::from(KERNBASE),
[INFO] [stdout] 51 | |         etext - KERNBASE,
[INFO] [stdout] 52 | |         PteFlag::R | PteFlag::X
[INFO] [stdout] 53 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | /     KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 57 | |         VirtualAddr::from(etext),
[INFO] [stdout] 58 | |         PhysAddr::from(etext),
[INFO] [stdout] 59 | |         PHYSTOP - etext,
[INFO] [stdout] 60 | |         PteFlag::R | PteFlag::W
[INFO] [stdout] 61 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | /     KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 69 | |         VirtualAddr::from(TRAMPOLINE),
[INFO] [stdout] 70 | |         PhysAddr::from(trampoline),
[INFO] [stdout] 71 | |         PGSIZE,
[INFO] [stdout] 72 | |         PteFlag::R | PteFlag::X
[INFO] [stdout] 73 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/memory/mod.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | /         KERNEL_PAGETABLE.map_pages(
[INFO] [stdout] 78 | |             VirtualAddr::from(KSTACK(i)),
[INFO] [stdout] 79 | |             PhysAddr::from(Box::into_raw(pa) as usize),
[INFO] [stdout] 80 | |             PGSIZE,
[INFO] [stdout] 81 | |             PteFlag::R | PteFlag::W
[INFO] [stdout] 82 | |         );
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `KSTACK` should have a snake case name
[INFO] [stdout]    --> src/memory/mod.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn KSTACK(p: usize) -> usize{
[INFO] [stdout]     |        ^^^^^^ help: convert the identifier to snake case: `kstack`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `next_pid` should have an upper case name
[INFO] [stdout]   --> src/proc/mod.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | static next_pid: Mutex<isize> = spin::Mutex::new(0);
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to upper case: `NEXT_PID`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `proc_list` should have an upper case name
[INFO] [stdout]   --> src/proc/mod.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub static mut proc_list: [Proc; NPROC] = array![_ => Proc::new(); NPROC];
[INFO] [stdout]    |                ^^^^^^^^^ help: convert the identifier to upper case: `PROC_LIST`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `cpu_list` should have an upper case name
[INFO] [stdout]   --> src/proc/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | static mut cpu_list: [Cpu; NCPU] = array![_ => Cpu::new(); NCPU];
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper case: `CPU_LIST`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RUNNING` should have a snake case name
[INFO] [stdout]   --> src/trap.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             RUNNING =>{
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `running`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid instruction mnemonic 'mret'
[INFO] [stdout]   --> src/start.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     llvm_asm!("mret"::::"volatile");
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout] note: instantiated into assembly here
[INFO] [stdout]   --> <inline asm>:1:2
[INFO] [stdout]    |
[INFO] [stdout] 1  |     mret
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xv6-rust-project`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "dd3cc30d0ca15d071b5276e2690ddeda8d2201d7050191a9fc3359a41213a6c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd3cc30d0ca15d071b5276e2690ddeda8d2201d7050191a9fc3359a41213a6c4", kill_on_drop: false }`
[INFO] [stdout] dd3cc30d0ca15d071b5276e2690ddeda8d2201d7050191a9fc3359a41213a6c4
