[INFO] fetching crate timberwolf 0.5.0...
[INFO] testing timberwolf-0.5.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate timberwolf 0.5.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate timberwolf 0.5.0
[INFO] finished tweaking crates.io crate timberwolf 0.5.0
[INFO] tweaked toml for crates.io crate timberwolf 0.5.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate timberwolf 0.5.0 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 158 packages to highest compatible versions
[INFO] [stderr]       Adding cgmath v0.17.0 (available: v0.18.0)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] [stderr]       Adding winit v0.19.5 (available: v0.30.13)
[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-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346
[INFO] running `Command { std: "docker" "start" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346", 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" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346" "/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" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346", 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" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.28
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling colorful v0.2.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling hibitset v0.6.4
[INFO] [stderr]    Compiling xml-rs v0.8.29
[INFO] [stderr]    Compiling either v1.19.0
[INFO] [stderr]    Compiling cmake v0.1.58
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling raw-window-handle v0.3.4
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling wayland-sys v0.21.13
[INFO] [stderr]    Compiling syn v3.0.9
[INFO] [stderr]    Compiling gfx-hal v0.4.1
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling thread_profiler v0.3.0
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling spirv-reflect v0.2.3
[INFO] [stderr] warning: shaderc-sys@0.6.3: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.3: System installed library not found.  Falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.3`
[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/shaderc-sys/1533f2386338b6b7/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr]   cargo:warning=System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (368) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.6.3/build/cmd_finder.rs:50:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x58854e1aced1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x58854e1c0e6a - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x58854e1b26bc - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x58854e18b556 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x58854e1a7bf1 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x58854e1a7dab - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x58854e18b602 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x58854e1842a9 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x58854e18bded - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x58854e1c15dc - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x58854e0f1117 - <build_script_build[328b9600dceb22d4]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     11:     0x58854e0ee890 - <core[a373ad73a504971]::option::Option<std[617be2ca0a6fd877]::path::PathBuf>>::unwrap_or_else::<<build_script_build[328b9600dceb22d4]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     12:     0x58854e0ee7c0 - <build_script_build[328b9600dceb22d4]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     13:     0x58854e0f4b1d - build_script_build[328b9600dceb22d4]::main
[INFO] [stderr]     14:     0x58854e0f7253 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     15:     0x58854e0f0706 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     16:     0x58854e0f12a9 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     17:     0x58854e1a6b68 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     18:     0x58854e0f0191 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     19:     0x58854e0f7325 - main
[INFO] [stderr]     20:     0x79c92fe22601 - <unknown>
[INFO] [stderr]     21:     0x79c92fe22718 - __libc_start_main
[INFO] [stderr]     22:     0x58854e0ed9a5 - _start
[INFO] [stderr]     23:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346", kill_on_drop: false }`
[INFO] [stdout] cb80c510b8ebd4f39492680a0954cb0ae0065ec1d2c2ecbfe0138b42c6498346
