[INFO] fetching crate lean-host-mcp-worker 0.14.2...
[INFO] testing lean-host-mcp-worker-0.14.2 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate lean-host-mcp-worker 0.14.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate lean-host-mcp-worker 0.14.2
[INFO] finished tweaking crates.io crate lean-host-mcp-worker 0.14.2
[INFO] tweaked toml for crates.io crate lean-host-mcp-worker 0.14.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lean-host-mcp-worker 0.14.2 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] crate crates.io crate lean-host-mcp-worker 0.14.2 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.future-incompatible` is deprecated in favor of `lints.rust.future_incompatible` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.let-underscore` is deprecated in favor of `lints.rust.let_underscore` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.nonstandard-style` is deprecated in favor of `lints.rust.nonstandard_style` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2024-compatibility` is deprecated in favor of `lints.rust.rust_2024_compatibility` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unsafe-code` is deprecated in favor of `lints.rust.unsafe_code` and will not work in a future edition
[INFO] [stderr] warning: `lean-host-mcp-worker` (manifest) generated 6 warnings
[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] 79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866
[INFO] running `Command { std: "docker" "start" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866", 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" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866" "/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" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866", 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" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.rust.future-incompatible` is deprecated in favor of `lints.rust.future_incompatible` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.let-underscore` is deprecated in favor of `lints.rust.let_underscore` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.nonstandard-style` is deprecated in favor of `lints.rust.nonstandard_style` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2018-idioms` is deprecated in favor of `lints.rust.rust_2018_idioms` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.rust-2024-compatibility` is deprecated in favor of `lints.rust.rust_2024_compatibility` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.rust.unsafe-code` is deprecated in favor of `lints.rust.unsafe_code` and will not work in a future edition
[INFO] [stderr] warning: `lean-host-mcp-worker` (manifest) generated 6 warnings
[INFO] [stderr]    Compiling hybrid-array v0.4.14
[INFO] [stderr]    Compiling lean-rs-abi v0.9.4
[INFO] [stderr]    Compiling crypto-common v0.2.2
[INFO] [stderr]    Compiling block-buffer v0.12.1
[INFO] [stderr]    Compiling toml_parser v1.1.3+spec-1.1.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling syn v3.0.4
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.1.1
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling fs4 v1.1.0
[INFO] [stderr]    Compiling lean-rs v0.9.4
[INFO] [stderr]    Compiling tracing-subscriber v0.3.23
[INFO] [stderr]    Compiling lean-rs-host v0.9.4
[INFO] [stderr]    Compiling lean-rs-worker-child v0.9.4
[INFO] [stderr]    Compiling lean-host-mcp-worker v0.14.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling toml v1.1.5+spec-1.1.0
[INFO] [stderr]    Compiling digest v0.11.3
[INFO] [stderr]    Compiling sha2 v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling lean-toolchain v0.9.4
[INFO] [stderr]    Compiling lean-rs-sys v0.9.4
[INFO] [stderr] error: failed to run custom build command for `lean-rs-sys v0.9.4`
[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/lean-rs-sys/792a428e6e5b4e1c/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (470) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lean-rs-sys-0.9.4/build.rs:287:5:
[INFO] [stderr]   lean-rs-sys: could not locate a Lean toolchain prefix. Tried:
[INFO] [stderr]     - LEAN_SYSROOT unset
[INFO] [stderr]     - `lean --print-prefix` failed: No such file or directory (os error 2)
[INFO] [stderr]     - ELAN_HOME unset
[INFO] [stderr]     - fixture prefix: `lake env --print-prefix` unavailable
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x646e594f6221 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x646e595074ea - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x646e594f9d5c - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x646e594d8cd6 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x646e594f19e1 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x646e594f1b9b - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x646e594d8d82 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x646e594d1ad9 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x646e594d954d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x646e59507c5c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x646e594ab902 - build_script_build[f417e756a5e0fb5a]::discover_lean_prefix
[INFO] [stderr]     11:     0x646e594ac9fc - build_script_build[f417e756a5e0fb5a]::main
[INFO] [stderr]     12:     0x646e594ba3f3 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     13:     0x646e594aef3e - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     14:     0x646e594b80b9 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     15:     0x646e594f0e58 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     16:     0x646e594b6c01 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     17:     0x646e594ae765 - main
[INFO] [stderr]     18:     0x7b34d5a32601 - <unknown>
[INFO] [stderr]     19:     0x7b34d5a32718 - __libc_start_main
[INFO] [stderr]     20:     0x646e594a01e5 - _start
[INFO] [stderr]     21:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866", kill_on_drop: false }`
[INFO] [stdout] 79b36dc778f44dbff3fa22ca465acc5cd60fa18feeaae552128a2f9c344c2866
