[INFO] fetching crate moltenvk-sys 0.1.2...
[INFO] testing moltenvk-sys-0.1.2 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate moltenvk-sys 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate moltenvk-sys 0.1.2
[INFO] finished tweaking crates.io crate moltenvk-sys 0.1.2
[INFO] tweaked toml for crates.io crate moltenvk-sys 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate moltenvk-sys 0.1.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to highest compatible versions
[INFO] [stderr]       Adding libloading v0.7.4 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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] 54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56
[INFO] running `Command { std: "docker" "start" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56", 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" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56", 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" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling moltenvk-sys v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `moltenvk-sys v0.1.2 (/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/moltenvk-sys-9830e584d9b319f7/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=FORCE_MVK_FROM_SOURCE
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (80) panicked at build.rs:36:23:
[INFO] [stderr]   Unknown target 'linux'
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x6352827f16c1 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x635282802b0a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x6352827f54cc - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x6352827d44d6 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x6352827ecb41 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x6352827eccfb - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x6352827d4582 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x6352827cd539 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x6352827d4d7d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stderr]      9:     0x63528280323c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stderr]     10:     0x6352827bead7 - build_script_build[aa7f1728707b829f]::main
[INFO] [stderr]     11:     0x6352827c0fa3 - <fn() as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     12:     0x6352827be036 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     13:     0x6352827be369 - std[70759c8f55707aa4]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     14:     0x6352827ebf79 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     15:     0x6352827bd6c1 - std[70759c8f55707aa4]::rt::lang_start::<()>
[INFO] [stderr]     16:     0x6352827c1045 - main
[INFO] [stderr]     17:     0x7ff337c22601 - <unknown>
[INFO] [stderr]     18:     0x7ff337c22718 - __libc_start_main
[INFO] [stderr]     19:     0x6352827bc685 - _start
[INFO] [stderr]     20:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56", kill_on_drop: false }`
[INFO] [stdout] 54a590c82eb74f04333f6eea09217d848c1902638c693a2f0a24ec1b8738dc56
