[INFO] fetching crate nobs-vkpipes 0.1.0...
[INFO] checking nobs-vkpipes-0.1.0 against try#121a90d34197f711021eeb158e7f4184b8be8ceb for pr-140313
[INFO] extracting crate nobs-vkpipes 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate nobs-vkpipes 0.1.0 on toolchain 121a90d34197f711021eeb158e7f4184b8be8ceb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+121a90d34197f711021eeb158e7f4184b8be8ceb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nobs-vkpipes 0.1.0
[INFO] finished tweaking crates.io crate nobs-vkpipes 0.1.0
[INFO] tweaked toml for crates.io crate nobs-vkpipes 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+121a90d34197f711021eeb158e7f4184b8be8ceb" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+121a90d34197f711021eeb158e7f4184b8be8ceb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nobs-vkpipes-macro v0.1.0
[INFO] [stderr]   Downloaded nobs-vk v0.2.0
[INFO] [stderr]   Downloaded shaderc v0.3.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+121a90d34197f711021eeb158e7f4184b8be8ceb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbd95676a5d8a8f70cfcd33cff31390280a95d903530ac31a4b96cf3048f38d5
[INFO] running `Command { std: "docker" "start" "-a" "cbd95676a5d8a8f70cfcd33cff31390280a95d903530ac31a4b96cf3048f38d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbd95676a5d8a8f70cfcd33cff31390280a95d903530ac31a4b96cf3048f38d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd95676a5d8a8f70cfcd33cff31390280a95d903530ac31a4b96cf3048f38d5", kill_on_drop: false }`
[INFO] [stdout] cbd95676a5d8a8f70cfcd33cff31390280a95d903530ac31a4b96cf3048f38d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+121a90d34197f711021eeb158e7f4184b8be8ceb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efa5ca059eebb7a1ff39026632d128eb37e4c617c2fa88a6e9dc76da7b4b41c3
[INFO] running `Command { std: "docker" "start" "-a" "efa5ca059eebb7a1ff39026632d128eb37e4c617c2fa88a6e9dc76da7b4b41c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling cc v1.2.20
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling nobs-vk v0.2.0
[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_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-49b2bfe57c102174/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' 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:     0x5d6ed9186382 - std::backtrace_rs::backtrace::libunwind::trace::hfd22d01457d7800f
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5d6ed9186382 - std::backtrace_rs::backtrace::trace_unsynchronized::h2f58194b6ef935af
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5d6ed9186382 - std::sys::backtrace::_print_fmt::hbd6464a8283a8a6f
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5d6ed9186382 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb91047b251fae63c
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5d6ed91a8253 - core::fmt::rt::Argument::fmt::h0e7e4842b199d137
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/core/src/fmt/rt.rs:179:76
[INFO] [stderr]      5:     0x5d6ed91a8253 - core::fmt::write::he0f152a72a39e714
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/core/src/fmt/mod.rs:1481:25
[INFO] [stderr]      6:     0x5d6ed9182db3 - std::io::default_write_fmt::h5307c1424ab67daa
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5d6ed9182db3 - std::io::Write::write_fmt::h748d2906906d8922
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/io/mod.rs:1914:13
[INFO] [stderr]      8:     0x5d6ed91861d2 - std::sys::backtrace::BacktraceLock::print::h59a3558b83cea2de
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5d6ed9187672 - std::panicking::default_hook::{{closure}}::h9986bef7b9435d39
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:300:22
[INFO] [stderr]     10:     0x5d6ed9187475 - std::panicking::default_hook::hd74422d234078745
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x5d6ed9188052 - std::panicking::rust_panic_with_hook::ha6a31295a8ebad5b
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x5d6ed9187dda - std::panicking::begin_panic_handler::{{closure}}::hf9a5e13b009d3296
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x5d6ed9186889 - std::sys::backtrace::__rust_end_short_backtrace::hca844f461693ae5c
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     14:     0x5d6ed9187a6d - __rustc[ef682cde3c78be63]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x5d6ed91a70e0 - core::panicking::panic_fmt::haf0e65bb54b02be2
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5d6ed90eca69 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::hfef269a0d0c0c5e0
[INFO] [stderr]     17:     0x5d6ed90eaa15 - core::option::Option<T>::unwrap_or_else::h0bf471ccc0277871
[INFO] [stderr]     18:     0x5d6ed90ec9ec - build_script_build::cmd_finder::CommandFinder::must_have::h7c97c89ddc5ca277
[INFO] [stderr]     19:     0x5d6ed90ed111 - build_script_build::main::h4ca37503092bd5e8
[INFO] [stderr]     20:     0x5d6ed90ea093 - core::ops::function::FnOnce::call_once::h87c9101f54c2a247
[INFO] [stderr]     21:     0x5d6ed90e9ac6 - std::sys::backtrace::__rust_begin_short_backtrace::h80ce3b350e7bdffb
[INFO] [stderr]     22:     0x5d6ed90e9a09 - std::rt::lang_start::{{closure}}::hb6d52963e17603b5
[INFO] [stderr]     23:     0x5d6ed917e910 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h70119ea60910cc76
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     24:     0x5d6ed917e910 - std::panicking::try::do_call::h24ba86ecd61a9381
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x5d6ed917e910 - std::panicking::try::he0beb0401dc1ef22
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x5d6ed917e910 - std::panic::catch_unwind::hb6d36aed172dbe49
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5d6ed917e910 - std::rt::lang_start_internal::{{closure}}::h61368a232a5ae0da
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/rt.rs:168:24
[INFO] [stderr]     28:     0x5d6ed917e910 - std::panicking::try::do_call::h5b3a85e5f117cab5
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:589:40
[INFO] [stderr]     29:     0x5d6ed917e910 - std::panicking::try::h7c6e674b166dddde
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panicking.rs:552:19
[INFO] [stderr]     30:     0x5d6ed917e910 - std::panic::catch_unwind::h3c983bdf6cfe637e
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5d6ed917e910 - std::rt::lang_start_internal::hb31ac0bf03fca4e4
[INFO] [stderr]                                  at /rustc/121a90d34197f711021eeb158e7f4184b8be8ceb/library/std/src/rt.rs:164:5
[INFO] [stderr]     32:     0x5d6ed90e99f1 - std::rt::lang_start::haee8540ac7fcba33
[INFO] [stderr]     33:     0x5d6ed90edae5 - main
[INFO] [stderr]     34:     0x7cdab9a091ca - <unknown>
[INFO] [stderr]     35:     0x7cdab9a0928b - __libc_start_main
[INFO] [stderr]     36:     0x5d6ed90e7185 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "efa5ca059eebb7a1ff39026632d128eb37e4c617c2fa88a6e9dc76da7b4b41c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efa5ca059eebb7a1ff39026632d128eb37e4c617c2fa88a6e9dc76da7b4b41c3", kill_on_drop: false }`
[INFO] [stdout] efa5ca059eebb7a1ff39026632d128eb37e4c617c2fa88a6e9dc76da7b4b41c3