[INFO] cloning repository https://github.com/gitrustux/rustux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gitrustux/rustux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitrustux%2Frustux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitrustux%2Frustux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95125a146a8bbdd295a09e0fca3d1006d8ceddb8
[INFO] documenting gitrustux/rustux against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitrustux%2Frustux" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/gitrustux/rustux
[INFO] finished tweaking git repo https://github.com/gitrustux/rustux
[INFO] tweaked toml for git repo https://github.com/gitrustux/rustux written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gitrustux/rustux on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gitrustux/rustux 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" "+beta-2026-04-21" "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] documenting gitrustux/rustux against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitrustux%2Frustux" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/gitrustux/rustux
[INFO] finished tweaking git repo https://github.com/gitrustux/rustux
[INFO] tweaked toml for git repo https://github.com/gitrustux/rustux written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gitrustux/rustux on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gitrustux/rustux 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" "+beta-2026-04-21" "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 volatile v0.4.6
[INFO] [stderr]   Downloaded uguid v2.2.1
[INFO] [stderr]   Downloaded ptr_meta v0.3.1
[INFO] [stderr]   Downloaded ucs2 v0.3.3
[INFO] [stderr]   Downloaded uefi-macros v0.19.0
[INFO] [stderr]   Downloaded ptr_meta_derive v0.3.1
[INFO] [stderr]   Downloaded x86_64 v0.14.13
[INFO] [stderr]   Downloaded uefi-raw v0.13.0
[INFO] [stderr]   Downloaded uefi v0.36.1
[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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3108a2bb2896bb2b2ec34dcc13859fd2ab37f4d089a719d2a0f299beedb0f858
[INFO] running `Command { std: "docker" "start" "-a" "3108a2bb2896bb2b2ec34dcc13859fd2ab37f4d089a719d2a0f299beedb0f858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3108a2bb2896bb2b2ec34dcc13859fd2ab37f4d089a719d2a0f299beedb0f858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3108a2bb2896bb2b2ec34dcc13859fd2ab37f4d089a719d2a0f299beedb0f858", kill_on_drop: false }`
[INFO] [stdout] 3108a2bb2896bb2b2ec34dcc13859fd2ab37f4d089a719d2a0f299beedb0f858
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6a1d0e568d14ae1d84fd3e1988f2cdef6a99764c9085c40d2176458ca9c9bc4
[INFO] running `Command { std: "docker" "start" "-a" "e6a1d0e568d14ae1d84fd3e1988f2cdef6a99764c9085c40d2176458ca9c9bc4", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]     Checking bitflags v2.10.0
[INFO] [stderr]    Compiling rustux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bit_field v0.10.3
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> build.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     let mut files_offset = superblock_size;
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> build.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let mut names_offset = files_offset + file_entry_size * files_to_embed.len() as u32;
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `userspace_progs`
[INFO] [stdout]    --> build.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let userspace_progs = vec![
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_userspace_progs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elf_binaries`
[INFO] [stdout]    --> build.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let elf_binaries = vec![
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elf_binaries`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking x86_64 v0.14.13
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr] warning: rustux@0.1.0: Ramdisk: 1 files, 278 bytes total
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/x86_64-0.14.13/src/lib.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "const_fn", feature(const_mut_refs))] // GDT add_entry()
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `const_mut_refs` has been stable since `1.83.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86_64` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e6a1d0e568d14ae1d84fd3e1988f2cdef6a99764c9085c40d2176458ca9c9bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a1d0e568d14ae1d84fd3e1988f2cdef6a99764c9085c40d2176458ca9c9bc4", kill_on_drop: false }`
[INFO] [stdout] e6a1d0e568d14ae1d84fd3e1988f2cdef6a99764c9085c40d2176458ca9c9bc4