[INFO] fetching crate nobs-vulkanism 0.1.0...
[INFO] checking nobs-vulkanism-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate nobs-vulkanism 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate nobs-vulkanism 0.1.0
[INFO] finished tweaking crates.io crate nobs-vulkanism 0.1.0
[INFO] tweaked toml for crates.io crate nobs-vulkanism 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nobs-vulkanism 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 107 packages to latest compatible versions
[INFO] [stderr]       Adding winit v0.18.1 (available: v0.30.11)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73fdbcac7624dd61cc2d058c83cc471eaaa741aa967d4a0181221dfa2d94f537
[INFO] running `Command { std: "docker" "start" "-a" "73fdbcac7624dd61cc2d058c83cc471eaaa741aa967d4a0181221dfa2d94f537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73fdbcac7624dd61cc2d058c83cc471eaaa741aa967d4a0181221dfa2d94f537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73fdbcac7624dd61cc2d058c83cc471eaaa741aa967d4a0181221dfa2d94f537", kill_on_drop: false }`
[INFO] [stdout] 73fdbcac7624dd61cc2d058c83cc471eaaa741aa967d4a0181221dfa2d94f537
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0be23e95ea493bb7545b49093f5f73e081b559efa0b9cd119064f7f5c6aac8c
[INFO] running `Command { std: "docker" "start" "-a" "f0be23e95ea493bb7545b49093f5f73e081b559efa0b9cd119064f7f5c6aac8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling xml-rs v0.8.26
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]     Checking downcast-rs v1.2.1
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]     Checking xdg v2.5.2
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling shaderc v0.3.16
[INFO] [stderr]     Checking nobs-vk v0.2.0
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[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-4ef2c8675131cb3b/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:     0x63388b5ebaa2 - std::backtrace_rs::backtrace::libunwind::trace::h360bb75e22de2778
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x63388b5ebaa2 - std::backtrace_rs::backtrace::trace_unsynchronized::hfdde2f704faeffd5
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x63388b5ebaa2 - std::sys::backtrace::_print_fmt::h417d2e15f697175b
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x63388b5ebaa2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h6da87f843d594e5f
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x63388b60e7e3 - core::fmt::rt::Argument::fmt::h93dad83eea6b1735
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x63388b60e7e3 - core::fmt::write::hfc80a741b320fdf6
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/core/src/fmt/mod.rs:1465:25
[INFO] [stderr]      6:     0x63388b5e8453 - std::io::default_write_fmt::h4f50706d79e0ad9c
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x63388b5e8453 - std::io::Write::write_fmt::h4ea6a86049496d1c
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x63388b5eb8f2 - std::sys::backtrace::BacktraceLock::print::h1cbd12f8d7a3dd2a
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x63388b5ecd86 - std::panicking::default_hook::{{closure}}::h05e45c6f75ebd415
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x63388b5ecb89 - std::panicking::default_hook::h282f20b2a278c2b0
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x63388b5ed752 - std::panicking::rust_panic_with_hook::h36eb92d284238d72
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x63388b5ed4ea - std::panicking::begin_panic_handler::{{closure}}::h880cd2442ca41755
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x63388b5ebfa9 - std::sys::backtrace::__rust_end_short_backtrace::hea32aba5814406f8
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     14:     0x63388b5ed17d - __rustc[e8bfc998c4eccd70]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x63388b60d6b0 - core::panicking::panic_fmt::h507f02bb0d23e89f
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x63388b54e949 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::he74094f58e06fb67
[INFO] [stderr]     17:     0x63388b54c765 - core::option::Option<T>::unwrap_or_else::h4aca385a59bda7cf
[INFO] [stderr]     18:     0x63388b54e8cc - build_script_build::cmd_finder::CommandFinder::must_have::hadbb30b43cea6c4a
[INFO] [stderr]     19:     0x63388b54eff1 - build_script_build::main::hb782548a93410851
[INFO] [stderr]     20:     0x63388b54ba13 - core::ops::function::FnOnce::call_once::hd4c63c5b609834d2
[INFO] [stderr]     21:     0x63388b54b716 - std::sys::backtrace::__rust_begin_short_backtrace::he2a778a1195c1a2d
[INFO] [stderr]     22:     0x63388b54b649 - std::rt::lang_start::{{closure}}::h01f98e233c94c869
[INFO] [stderr]     23:     0x63388b5e4160 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6a0310293008eb2d
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/core/src/ops/function.rs:284:21
[INFO] [stderr]     24:     0x63388b5e4160 - std::panicking::catch_unwind::do_call::h296e94a1c4e3d78c
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x63388b5e4160 - std::panicking::catch_unwind::hcc60b8b41a431974
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x63388b5e4160 - std::panic::catch_unwind::hfde220fef6750e01
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x63388b5e4160 - std::rt::lang_start_internal::{{closure}}::h8a2acae78735c9ef
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x63388b5e4160 - std::panicking::catch_unwind::do_call::hd03928f4e997613a
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:589:40
[INFO] [stderr]     29:     0x63388b5e4160 - std::panicking::catch_unwind::hf7cbafaef6e89ea3
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panicking.rs:552:19
[INFO] [stderr]     30:     0x63388b5e4160 - std::panic::catch_unwind::hf1ae9b7d8b7c2036
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x63388b5e4160 - std::rt::lang_start_internal::h1c97a48421de4504
[INFO] [stderr]                                  at /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x63388b54b631 - std::rt::lang_start::hbf2f11b6600de6d9
[INFO] [stderr]     33:     0x63388b54f9c5 - main
[INFO] [stderr]     34:     0x7e740a6d91ca - <unknown>
[INFO] [stderr]     35:     0x7e740a6d928b - __libc_start_main
[INFO] [stderr]     36:     0x63388b548ca5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f0be23e95ea493bb7545b49093f5f73e081b559efa0b9cd119064f7f5c6aac8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0be23e95ea493bb7545b49093f5f73e081b559efa0b9cd119064f7f5c6aac8c", kill_on_drop: false }`
[INFO] [stdout] f0be23e95ea493bb7545b49093f5f73e081b559efa0b9cd119064f7f5c6aac8c