[INFO] fetching crate graphite_mc_constants 0.1.0...
[INFO] testing graphite_mc_constants-0.1.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate graphite_mc_constants 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate graphite_mc_constants 0.1.0
[INFO] finished tweaking crates.io crate graphite_mc_constants 0.1.0
[INFO] tweaked toml for crates.io crate graphite_mc_constants 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate graphite_mc_constants 0.1.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to highest compatible versions
[INFO] [stderr]       Adding convert_case v0.5.0 (available: v0.12.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.14.2)
[INFO] [stderr]       Adding num_enum v0.5.11 (available: v0.7.6)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.21)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878
[INFO] running `Command { std: "docker" "start" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling cesu8 v1.1.0
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling syn v3.0.9
[INFO] [stderr]    Compiling serde_json v1.0.154
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling graphite_binary_macros v0.1.0
[INFO] [stderr]    Compiling num_enum v0.5.11
[INFO] [stderr]    Compiling graphite_binary v0.1.0
[INFO] [stderr]    Compiling graphite_mc_protocol v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling readonly v0.2.14
[INFO] [stderr]    Compiling graphite_mc_constants v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name` and `block` are never read
[INFO] [stdout]   --> build/block.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct CustomPlacer {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 85 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 86 |     pub block: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CustomPlacer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to run custom build command for `graphite_mc_constants v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/release/build/graphite_mc_constants/aff353bd4ea4d3df/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (525) panicked at build.rs:48:42:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x579399540ef1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x5793995558da - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x579399544adc - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x5793995296a6 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x57939953cdd1 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x57939953cf8b - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x579399529752 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x579399522059 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x57939952a04d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x57939955604c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x579399555e22 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stderr]     11:     0x5793994ed92a - build_script_build[96612f82cfbec321]::file_src
[INFO] [stderr]     12:     0x57939948a481 - build_script_build[96612f82cfbec321]::block::write_block_rs
[INFO] [stderr]     13:     0x57939948f66e - build_script_build[96612f82cfbec321]::block::write_block_states
[INFO] [stderr]     14:     0x5793994ecb8e - build_script_build[96612f82cfbec321]::main
[INFO] [stderr]     15:     0x5793994f03ab - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     16:     0x5793994ada5e - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     17:     0x5793994bc919 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     18:     0x57939953c578 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     19:     0x5793994bb731 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     20:     0x5793994f1075 - main
[INFO] [stderr]     21:     0x70f56daf2601 - <unknown>
[INFO] [stderr]     22:     0x70f56daf2718 - __libc_start_main
[INFO] [stderr]     23:     0x57939946dd85 - _start
[INFO] [stderr]     24:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878", kill_on_drop: false }`
[INFO] [stdout] 08b35f9b729b0679c29afd133d285af4b25a7b04c3fbe324f383c3d730f77878
