[INFO] fetching crate k2f_core 0.3.2...
[INFO] testing k2f_core-0.3.2 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate k2f_core 0.3.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate k2f_core 0.3.2
[INFO] finished tweaking crates.io crate k2f_core 0.3.2
[INFO] tweaked toml for crates.io crate k2f_core 0.3.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate k2f_core 0.3.2 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 k2f_core 0.3.2 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: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | homepage = "https://github.com/suzheng/k2f"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 | repository = "https://github.com/suzheng/k2f"
[INFO] [stderr]    |              --------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `k2f_core` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4
[INFO] running `Command { std: "docker" "start" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4", 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" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4" "/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" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4", 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" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | homepage = "https://github.com/suzheng/k2f"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 | repository = "https://github.com/suzheng/k2f"
[INFO] [stderr]    |              --------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `k2f_core` (manifest) generated 1 warning
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling k2f_core v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinyvec v1.13.3
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr] error: failed to run custom build command for `k2f_core v0.3.2 (/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/k2f_core/795483f7b548d235/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=K2F_ENGINE_COMMIT_SHA
[INFO] [stderr]   cargo:rerun-if-changed=.git/HEAD
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (98) panicked at build.rs:13:21:
[INFO] [stderr]   release build requires K2F_ENGINE_COMMIT_SHA or a git checkout; got UNKNOWN
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5ebdf569e2d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x5ebdf56aef1a - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x5ebdf56a1bfc - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x5ebdf5681776 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x5ebdf569a101 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x5ebdf569a2bb - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x5ebdf5681854 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x5ebdf567a709 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x5ebdf5681fed - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x5ebdf56af64c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x5ebdf566c7e5 - build_script_build[9c359a530e129585]::main::{closure#1}::{closure#0}
[INFO] [stderr]     11:     0x5ebdf566b024 - <core[a373ad73a504971]::option::Option<alloc[2e1b2a31b91974c5]::string::String>>::unwrap_or_else::<build_script_build[9c359a530e129585]::main::{closure#1}::{closure#0}>
[INFO] [stderr]     12:     0x5ebdf566c863 - build_script_build[9c359a530e129585]::main::{closure#1}
[INFO] [stderr]     13:     0x5ebdf566b090 - <core[a373ad73a504971]::option::Option<alloc[2e1b2a31b91974c5]::string::String>>::unwrap_or_else::<build_script_build[9c359a530e129585]::main::{closure#1}>
[INFO] [stderr]     14:     0x5ebdf566c990 - build_script_build[9c359a530e129585]::main
[INFO] [stderr]     15:     0x5ebdf566f2a3 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     16:     0x5ebdf566c0b6 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     17:     0x5ebdf566c7a9 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     18:     0x5ebdf5699578 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     19:     0x5ebdf566b8a1 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     20:     0x5ebdf566f405 - main
[INFO] [stderr]     21:     0x7ce9f9247601 - <unknown>
[INFO] [stderr]     22:     0x7ce9f9247718 - __libc_start_main
[INFO] [stderr]     23:     0x5ebdf566ae55 - _start
[INFO] [stderr]     24:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4", kill_on_drop: false }`
[INFO] [stdout] 74ebb21249e9c4d22e9f8b8d64ad17f27e636b22c26b43bffb9dffeadbff35e4
