[INFO] cloning repository https://github.com/AlmightyFloppyFish/zircon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlmightyFloppyFish/zircon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fzircon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fzircon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2db5924b284c8c4792d242883bc88ca7acee8cd2
[INFO] checking AlmightyFloppyFish/zircon against try#b4c55082edd8dec08ce8af276d7054d9c4db20c4 for pr-147984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fzircon" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AlmightyFloppyFish/zircon
[INFO] finished tweaking git repo https://github.com/AlmightyFloppyFish/zircon
[INFO] tweaked toml for git repo https://github.com/AlmightyFloppyFish/zircon written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AlmightyFloppyFish/zircon on toolchain b4c55082edd8dec08ce8af276d7054d9c4db20c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AlmightyFloppyFish/zircon already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ccd3e0e3b31528c80fc145db9e20f6d85977f1abf625788541f6d9c323f8f89
[INFO] running `Command { std: "docker" "start" "-a" "2ccd3e0e3b31528c80fc145db9e20f6d85977f1abf625788541f6d9c323f8f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ccd3e0e3b31528c80fc145db9e20f6d85977f1abf625788541f6d9c323f8f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ccd3e0e3b31528c80fc145db9e20f6d85977f1abf625788541f6d9c323f8f89", kill_on_drop: false }`
[INFO] [stdout] 2ccd3e0e3b31528c80fc145db9e20f6d85977f1abf625788541f6d9c323f8f89
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38892d172e6ada2cba5db72422b6f7c7d3ec47b92b4350aaa4fee69dd5c47efe
[INFO] running `Command { std: "docker" "start" "-a" "38892d172e6ada2cba5db72422b6f7c7d3ec47b92b4350aaa4fee69dd5c47efe", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.11
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.21.11
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking downcast-rs v1.0.3
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking rusttype v0.7.5
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling shaderc v0.3.16
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking andrew v0.1.6
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling vulkano v0.11.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking crossbeam v0.5.0
[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-ccfc59ae8b6b050f/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (1128) 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:     0x61875678ff22 - std::backtrace_rs::backtrace::libunwind::trace::h8714d94f1f2bd164
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x61875678ff22 - std::backtrace_rs::backtrace::trace_unsynchronized::hcafee44aa61e678f
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x61875678ff22 - std::sys::backtrace::_print_fmt::ha8fba58b2f66a9e9
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x61875678ff22 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h55273c109f480de8
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x6187567a00af - core::fmt::rt::Argument::fmt::hddc1032261c428fe
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x6187567a00af - core::fmt::write::he6bcf7c3f2c4eba5
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x6187567610e3 - std::io::default_write_fmt::hf93eabd79e5df19f
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x6187567610e3 - std::io::Write::write_fmt::hc4c289442f488f72
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x61875676b722 - std::sys::backtrace::BacktraceLock::print::h453555a0d0bae7d2
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x61875676dfac - std::panicking::default_hook::{{closure}}::h3ebcee4d4a10f231
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x61875676de06 - std::panicking::default_hook::h8d904937f0dd5b7e
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x61875676e585 - std::panicking::panic_with_hook::hba74873bd829b497
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x61875676e41a - std::panicking::panic_handler::{{closure}}::h0dde4058cec7fa08
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x61875676b869 - std::sys::backtrace::__rust_end_short_backtrace::h9342f1937ef55218
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x61875675539d - __rustc[5a136cd62b6ae824]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x6187567a3b00 - core::panicking::panic_fmt::h7e8daff19647caf5
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x618756717c1b - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h397897aae8b35a45
[INFO] [stderr]     17:     0x61875671a169 - core::option::Option<T>::unwrap_or_else::h4e7968f7fcc456ff
[INFO] [stderr]     18:     0x618756717b9c - build_script_build::cmd_finder::CommandFinder::must_have::hdf95ff64a4ca5c0d
[INFO] [stderr]     19:     0x618756718291 - build_script_build::main::h557d4251b3ece6f6
[INFO] [stderr]     20:     0x6187567194b3 - core::ops::function::FnOnce::call_once::h4abc42ffa81b5ba8
[INFO] [stderr]     21:     0x618756719256 - std::sys::backtrace::__rust_begin_short_backtrace::h26988a5e49ed8612
[INFO] [stderr]     22:     0x6187567191d9 - std::rt::lang_start::{{closure}}::ha11a58c577a8d2dc
[INFO] [stderr]     23:     0x618756762820 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h7c8c93d7c0cb0422
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x618756762820 - std::panicking::catch_unwind::do_call::ha03d5ac0e4aa50e7
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x618756762820 - std::panicking::catch_unwind::hfba45bb934fc2e1a
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x618756762820 - std::panic::catch_unwind::h51a82f25faf184c3
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x618756762820 - std::rt::lang_start_internal::{{closure}}::h89e47390206e3c4f
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x618756762820 - std::panicking::catch_unwind::do_call::h6e1e6dcf14a2eeab
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x618756762820 - std::panicking::catch_unwind::h8dc206e2e3376274
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x618756762820 - std::panic::catch_unwind::h0ff4af620be037da
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x618756762820 - std::rt::lang_start_internal::h2f00f16ee79d72a1
[INFO] [stderr]                                  at /rustc/b4c55082edd8dec08ce8af276d7054d9c4db20c4/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x6187567191c1 - std::rt::lang_start::h113857a1553bc597
[INFO] [stderr]     33:     0x61875671d345 - main
[INFO] [stderr]     34:     0x79250bbda1ca - <unknown>
[INFO] [stderr]     35:     0x79250bbda28b - __libc_start_main
[INFO] [stderr]     36:     0x618756716cb5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "38892d172e6ada2cba5db72422b6f7c7d3ec47b92b4350aaa4fee69dd5c47efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38892d172e6ada2cba5db72422b6f7c7d3ec47b92b4350aaa4fee69dd5c47efe", kill_on_drop: false }`
[INFO] [stdout] 38892d172e6ada2cba5db72422b6f7c7d3ec47b92b4350aaa4fee69dd5c47efe
