[INFO] cloning repository https://github.com/malcomkamau/lithos-kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/malcomkamau/lithos-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcomkamau%2Flithos-kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcomkamau%2Flithos-kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93aaabc7fe2bb0081df0c45f0c9d8acd8c0ab68b
[INFO] checking malcomkamau/lithos-kernel against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcomkamau%2Flithos-kernel" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  97% (272/278)
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[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/malcomkamau/lithos-kernel
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/malcomkamau/lithos-kernel
[INFO] tweaked toml for git repo https://github.com/malcomkamau/lithos-kernel written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/malcomkamau/lithos-kernel on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/malcomkamau/lithos-kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking malcomkamau/lithos-kernel against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcomkamau%2Flithos-kernel" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  97% (272/278)
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[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/malcomkamau/lithos-kernel
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/malcomkamau/lithos-kernel
[INFO] tweaked toml for git repo https://github.com/malcomkamau/lithos-kernel written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/malcomkamau/lithos-kernel on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/malcomkamau/lithos-kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded conquer-once v0.4.0
[INFO] [stderr]   Downloaded volatile v0.4.6
[INFO] [stderr]   Downloaded linked_list_allocator v0.9.1
[INFO] [stderr]   Downloaded pc-keyboard v0.7.0
[INFO] [stderr]   Downloaded conquer-util v0.3.0
[INFO] [stderr]   Downloaded bootloader v0.9.34
[INFO] [stderr]   Downloaded x86_64 v0.14.13
[INFO] [stderr]   Downloaded pic8259 v0.10.4
[INFO] [stderr]   Downloaded volatile v0.2.7
[INFO] [stderr]   Downloaded uart_16550 v0.2.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1f4ce270f5bf753cb701f1af259d04f4674266130a57d00cb464a4a6814faa4
[INFO] running `Command { std: "docker" "start" "-a" "b1f4ce270f5bf753cb701f1af259d04f4674266130a57d00cb464a4a6814faa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1f4ce270f5bf753cb701f1af259d04f4674266130a57d00cb464a4a6814faa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f4ce270f5bf753cb701f1af259d04f4674266130a57d00cb464a4a6814faa4", kill_on_drop: false }`
[INFO] [stdout] b1f4ce270f5bf753cb701f1af259d04f4674266130a57d00cb464a4a6814faa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48fcc922bc383288f616550d35eb5949fb2dbefe49c7dc78c145b112d2bbb224
[INFO] running `Command { std: "docker" "start" "-a" "48fcc922bc383288f616550d35eb5949fb2dbefe49c7dc78c145b112d2bbb224", kill_on_drop: false }`
[INFO] [stderr]     Checking bit_field v0.10.3
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]    Compiling bootloader v0.9.34
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking pc-keyboard v0.7.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking linked_list_allocator v0.9.1
[INFO] [stderr]     Checking conquer-once v0.4.0
[INFO] [stderr]     Checking x86_64 v0.14.13
[INFO] [stderr]     Checking pic8259 v0.10.4
[INFO] [stderr]     Checking uart_16550 v0.2.19
[INFO] [stderr]     Checking lithos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `FileType`, `Permissions`, and `VfsNode`
[INFO] [stdout]  --> src/vfs/fat32/mod.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{VfsNode, VfsNodeRef, FileType, Permissions, VfsResult, VfsError};
[INFO] [stdout]   |             ^^^^^^^              ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `Permissions`, and `VfsNode`
[INFO] [stdout]  --> src/vfs/fat32/mod.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{VfsNode, VfsNodeRef, FileType, Permissions, VfsResult, VfsError};
[INFO] [stdout]   |             ^^^^^^^              ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::String`
[INFO] [stdout]  --> src/vfs/fat32/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::String`
[INFO] [stdout]  --> src/vfs/fat32/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::vec::Vec`
[INFO] [stdout]  --> src/vfs/fat32/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use alloc::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::vec::Vec`
[INFO] [stdout]  --> src/vfs/fat32/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use alloc::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/elf/mod.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let size = self.phentsize as usize;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/elf/mod.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let size = self.phentsize as usize;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]   --> src/task/kernel_thread.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct KernelThread {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     stack: Vec<u8>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `device` and `boot_sector` are never read
[INFO] [stdout]   --> src/vfs/fat32/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Fat32Fs {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 14 |     device: Arc<Mutex<dyn BlockDevice>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     boot_sector: BootSector,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error_port` is never read
[INFO] [stdout]  --> src/drivers/ata.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct AtaDrive {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 7 |     data_port: Mutex<Port<u16>>,
[INFO] [stdout] 8 |     error_port: Mutex<Port<u8>>,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lithos` (lib test) due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "48fcc922bc383288f616550d35eb5949fb2dbefe49c7dc78c145b112d2bbb224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48fcc922bc383288f616550d35eb5949fb2dbefe49c7dc78c145b112d2bbb224", kill_on_drop: false }`
[INFO] [stdout] 48fcc922bc383288f616550d35eb5949fb2dbefe49c7dc78c145b112d2bbb224