[INFO] fetching crate proc-spirv 0.0.1...
[INFO] building proc-spirv-0.0.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate proc-spirv 0.0.1 into /workspace/builds/worker-5-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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proc-spirv 0.0.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding shaderc v0.3.16 (available: v0.10.1)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 828203d175e2050c9ae173cdfd162771a09a0380a7f68d551f6e37ffedb30552
[INFO] running `Command { std: "docker" "start" "-a" "828203d175e2050c9ae173cdfd162771a09a0380a7f68d551f6e37ffedb30552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "828203d175e2050c9ae173cdfd162771a09a0380a7f68d551f6e37ffedb30552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828203d175e2050c9ae173cdfd162771a09a0380a7f68d551f6e37ffedb30552", kill_on_drop: false }`
[INFO] [stdout] 828203d175e2050c9ae173cdfd162771a09a0380a7f68d551f6e37ffedb30552
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac8d65c7b9fbe5a7ae0a2ae4123054cb17d98b7df13e768cfecdec94a07145f7
[INFO] running `Command { std: "docker" "start" "-a" "ac8d65c7b9fbe5a7ae0a2ae4123054cb17d98b7df13e768cfecdec94a07145f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cmake v0.1.54
[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_DEV_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/debug/build/shaderc-cd4248bf48912649/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (125) 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:     0x5af5e273c212 - std::backtrace_rs::backtrace::libunwind::trace::h52580dd202462214
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5af5e273c212 - std::backtrace_rs::backtrace::trace_unsynchronized::hc969519abce0f52b
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5af5e273c212 - std::sys::backtrace::_print_fmt::hfd5825900b6e0030
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5af5e273c212 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h427144ad75cfb218
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5af5e274c61f - core::fmt::rt::Argument::fmt::hd5ccc9cf97cea7f7
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5af5e274c61f - core::fmt::write::h593aaf5adf0f5dae
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x5af5e270cb51 - std::io::default_write_fmt::hf108c2855e591a7c
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5af5e270cb51 - std::io::Write::write_fmt::h6e02e29a2bcc97c1
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5af5e27178f2 - std::sys::backtrace::BacktraceLock::print::h3953113552dca3ca
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5af5e271a30c - std::panicking::default_hook::{{closure}}::h486b96ad75eafbb8
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x5af5e271a166 - std::panicking::default_hook::h99456317c5a1a20c
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x5af5e271a995 - std::panicking::panic_with_hook::h67ab0df20212e4ea
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x5af5e271a82a - std::panicking::panic_handler::{{closure}}::hc9e4a933ae92e208
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x5af5e2717a39 - std::sys::backtrace::__rust_end_short_backtrace::hbfa72df9b68c2d19
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x5af5e2700b1d - __rustc[8cce077e14951490]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x5af5e2750160 - core::panicking::panic_fmt::h49931053d20abf41
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5af5e268527c - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h06720cc356431c93
[INFO] [stderr]     17:     0x5af5e2687aa5 - core::option::Option<T>::unwrap_or_else::h13c8a7f6ef60eef9
[INFO] [stderr]     18:     0x5af5e26851fc - build_script_build::cmd_finder::CommandFinder::must_have::hee2edfec78d3789a
[INFO] [stderr]     19:     0x5af5e2685921 - build_script_build::main::h8765c9cd660a05d4
[INFO] [stderr]     20:     0x5af5e2686c83 - core::ops::function::FnOnce::call_once::h5c274a95306d6a28
[INFO] [stderr]     21:     0x5af5e2686a56 - std::sys::backtrace::__rust_begin_short_backtrace::ha88d1c0c455092af
[INFO] [stderr]     22:     0x5af5e2686989 - std::rt::lang_start::{{closure}}::h1dc5a75d07f859f1
[INFO] [stderr]     23:     0x5af5e270e550 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hb84e9e033646564e
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     24:     0x5af5e270e550 - std::panicking::catch_unwind::do_call::hbd46cd07e9e2b512
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x5af5e270e550 - std::panicking::catch_unwind::hd048d6861d343544
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x5af5e270e550 - std::panic::catch_unwind::h141ca8973277f822
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5af5e270e550 - std::rt::lang_start_internal::{{closure}}::hc1f3273d5e4e0426
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5af5e270e550 - std::panicking::catch_unwind::do_call::hc215ba2b02ac1f8c
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x5af5e270e550 - std::panicking::catch_unwind::h67f54bbdc14963b0
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x5af5e270e550 - std::panic::catch_unwind::h7d01c664f3f34538
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5af5e270e550 - std::rt::lang_start_internal::hcbf1d15fae983a0f
[INFO] [stderr]                                  at /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5af5e2686971 - std::rt::lang_start::h0cdd826086a4582d
[INFO] [stderr]     33:     0x5af5e2688e95 - main
[INFO] [stderr]     34:     0x7de05649a1ca - <unknown>
[INFO] [stderr]     35:     0x7de05649a28b - __libc_start_main
[INFO] [stderr]     36:     0x5af5e2682275 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ac8d65c7b9fbe5a7ae0a2ae4123054cb17d98b7df13e768cfecdec94a07145f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac8d65c7b9fbe5a7ae0a2ae4123054cb17d98b7df13e768cfecdec94a07145f7", kill_on_drop: false }`
[INFO] [stdout] ac8d65c7b9fbe5a7ae0a2ae4123054cb17d98b7df13e768cfecdec94a07145f7