[INFO] fetching crate proc-spirv 0.0.1...
[INFO] testing proc-spirv-0.0.1 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate proc-spirv 0.0.1 into /workspace/builds/worker-7-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate proc-spirv 0.0.1 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 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" "+1.100.0-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-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] 5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e
[INFO] running `Command { std: "docker" "start" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e", 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" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e" "/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" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e", 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" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cmake v0.1.58
[INFO] [stderr]    Compiling shaderc v0.3.16
[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/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (133) 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:     0x5c15c5a37361 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x5c15c5a4b22a - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x5c15c5a3cb4c - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x5c15c5a15a76 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x5c15c5a32081 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x5c15c5a3223b - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x5c15c5a15b22 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x5c15c5a0e7c9 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x5c15c5a1630d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x5c15c5a4b99c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x5c15c597ed97 - <build_script_build[fc379ce7ac8ae5b6]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     11:     0x5c15c597c340 - <core[a373ad73a504971]::option::Option<std[617be2ca0a6fd877]::path::PathBuf>>::unwrap_or_else::<<build_script_build[fc379ce7ac8ae5b6]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     12:     0x5c15c597c650 - <build_script_build[fc379ce7ac8ae5b6]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     13:     0x5c15c597f65a - build_script_build[fc379ce7ac8ae5b6]::main
[INFO] [stderr]     14:     0x5c15c598177b - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     15:     0x5c15c597e386 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     16:     0x5c15c597ef29 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     17:     0x5c15c5a30ff8 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     18:     0x5c15c597de11 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     19:     0x5c15c5981845 - main
[INFO] [stderr]     20:     0x7e89de195601 - <unknown>
[INFO] [stderr]     21:     0x7e89de195718 - __libc_start_main
[INFO] [stderr]     22:     0x5c15c597b915 - _start
[INFO] [stderr]     23:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e", kill_on_drop: false }`
[INFO] [stdout] 5f652972c94cb068b7255afff2646fe5b1479ec75853ed05bc6032c183c2bc4e
