[INFO] fetching crate proc-spirv 0.0.1...
[INFO] testing proc-spirv-0.0.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate proc-spirv 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate proc-spirv 0.0.1
[INFO] finished tweaking crates.io crate proc-spirv 0.0.1
[INFO] tweaked toml for crates.io crate proc-spirv 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proc-spirv 0.0.1 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 10 packages to highest compatible versions
[INFO] [stderr]       Adding shaderc v0.3.16 (available: v0.10.1)
[INFO] [stderr]       Adding syn v0.15.44 (available: v3.0.9)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shaderc v0.3.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888
[INFO] running `Command { std: "docker" "start" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888", 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" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888" "/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" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888", 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" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling cmake v0.1.58
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling shaderc v0.3.16
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr] error: failed to run custom build command for `shaderc v0.3.16`
[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-5907e6cc4bb468ee/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (135) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-0.3.16/build/cmd_finder.rs:45:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x60e8c5e01681 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x60e8c5e157fa - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x60e8c5e071ec - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x60e8c5ddfd36 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x60e8c5dfc4a1 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x60e8c5dfc65b - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x60e8c5ddfde2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x60e8c5dd8aa9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x60e8c5de05fd - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stderr]      9:     0x60e8c5e15f6c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stderr]     10:     0x60e8c5d48b77 - <build_script_build[1f9ef5ba5be44286]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     11:     0x60e8c5d46340 - <core[df12db4294e9bfd3]::option::Option<std[70759c8f55707aa4]::path::PathBuf>>::unwrap_or_else::<<build_script_build[1f9ef5ba5be44286]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     12:     0x60e8c5d462d0 - <build_script_build[1f9ef5ba5be44286]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     13:     0x60e8c5d4943a - build_script_build[1f9ef5ba5be44286]::main
[INFO] [stderr]     14:     0x60e8c5d4b79b - <fn() as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     15:     0x60e8c5d48166 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     16:     0x60e8c5d48d19 - std[70759c8f55707aa4]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     17:     0x60e8c5dfb3c9 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     18:     0x60e8c5d47bf1 - std[70759c8f55707aa4]::rt::lang_start::<()>
[INFO] [stderr]     19:     0x60e8c5d4b865 - main
[INFO] [stderr]     20:     0x7b8542007601 - <unknown>
[INFO] [stderr]     21:     0x7b8542007718 - __libc_start_main
[INFO] [stderr]     22:     0x60e8c5d45605 - _start
[INFO] [stderr]     23:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888", kill_on_drop: false }`
[INFO] [stdout] 9b4ed5011c3706f5e6ecfff90d211ce0a1ed1985ea76427b8ea2602021bc5888
