[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#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[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 f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44fbebab25794ff024b652747350d2c3f96b9999da04b35789cf1c4321c78a8a
[INFO] running `Command { std: "docker" "start" "-a" "44fbebab25794ff024b652747350d2c3f96b9999da04b35789cf1c4321c78a8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44fbebab25794ff024b652747350d2c3f96b9999da04b35789cf1c4321c78a8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44fbebab25794ff024b652747350d2c3f96b9999da04b35789cf1c4321c78a8a", kill_on_drop: false }`
[INFO] [stdout] 44fbebab25794ff024b652747350d2c3f96b9999da04b35789cf1c4321c78a8a
[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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85a42575db1808a9a53cbea2969597534b773525b6b8b141bdbac0a8b9472cc5
[INFO] running `Command { std: "docker" "start" "-a" "85a42575db1808a9a53cbea2969597534b773525b6b8b141bdbac0a8b9472cc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking void v1.0.2
[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 parking_lot_core v0.4.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[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]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[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]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling shaderc v0.3.16
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.11
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]    Compiling vulkano v0.11.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking shared_library v0.1.9
[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' (984) 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:     0x591e2f0c5f62 - std::backtrace_rs::backtrace::libunwind::trace::h4719922acc1f32d8
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x591e2f0c5f62 - std::backtrace_rs::backtrace::trace_unsynchronized::h2051c42b2630a5c2
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x591e2f0c5f62 - std::sys::backtrace::_print_fmt::h6b555000df2c582f
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x591e2f0c5f62 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8ded6d8a024ba086
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x591e2f0d60ef - core::fmt::rt::Argument::fmt::h35a1c06d9b268106
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x591e2f0d60ef - core::fmt::write::h54578f32d57bc648
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x591e2f097123 - std::io::default_write_fmt::hf46c9099dd2bb784
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x591e2f097123 - std::io::Write::write_fmt::h4f349bf8aaccb43d
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x591e2f0a1762 - std::sys::backtrace::BacktraceLock::print::hecec56b35aaf603f
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x591e2f0a3fec - std::panicking::default_hook::{{closure}}::hd6c682914ab1ad26
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x591e2f0a3e46 - std::panicking::default_hook::h6cfe4cd6f8bc31e5
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x591e2f0a45c5 - std::panicking::panic_with_hook::h44c676ec17840d54
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x591e2f0a445a - std::panicking::panic_handler::{{closure}}::hcd464e8af1215c4e
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x591e2f0a1899 - std::sys::backtrace::__rust_end_short_backtrace::h472e40a56c906c62
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x591e2f08b3dd - __rustc[66709b9d059b37fc]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x591e2f0d9b40 - core::panicking::panic_fmt::h799ffb5863fc63a3
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x591e2f04dc4b - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h442ba4c2417ef3ea
[INFO] [stderr]     17:     0x591e2f050199 - core::option::Option<T>::unwrap_or_else::hfa2f6ef840278eab
[INFO] [stderr]     18:     0x591e2f04dbcc - build_script_build::cmd_finder::CommandFinder::must_have::h765b97222728ca21
[INFO] [stderr]     19:     0x591e2f04e2c1 - build_script_build::main::h757cb74fcd13d35a
[INFO] [stderr]     20:     0x591e2f04f483 - core::ops::function::FnOnce::call_once::h24d9dece1a86eee5
[INFO] [stderr]     21:     0x591e2f04f286 - std::sys::backtrace::__rust_begin_short_backtrace::hdbd1a944ab7d645b
[INFO] [stderr]     22:     0x591e2f04f209 - std::rt::lang_start::{{closure}}::h20dce95d822ac79c
[INFO] [stderr]     23:     0x591e2f098860 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc3c1a118f95f28ce
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x591e2f098860 - std::panicking::catch_unwind::do_call::h7d530c21a6dc7c89
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x591e2f098860 - std::panicking::catch_unwind::hd663eff96b260042
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x591e2f098860 - std::panic::catch_unwind::h951995dd76995562
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x591e2f098860 - std::rt::lang_start_internal::{{closure}}::h9d8c468c91cbf901
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x591e2f098860 - std::panicking::catch_unwind::do_call::he3860c7edc206498
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x591e2f098860 - std::panicking::catch_unwind::ha3af58ce34415e02
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x591e2f098860 - std::panic::catch_unwind::h29ffe2ddc58d5e18
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x591e2f098860 - std::rt::lang_start_internal::hd327f88d31071a57
[INFO] [stderr]                                  at /rustc/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x591e2f04f1f1 - std::rt::lang_start::h3b464e6ec39e9093
[INFO] [stderr]     33:     0x591e2f053375 - main
[INFO] [stderr]     34:     0x7e61b51651ca - <unknown>
[INFO] [stderr]     35:     0x7e61b516528b - __libc_start_main
[INFO] [stderr]     36:     0x591e2f04cce5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "85a42575db1808a9a53cbea2969597534b773525b6b8b141bdbac0a8b9472cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85a42575db1808a9a53cbea2969597534b773525b6b8b141bdbac0a8b9472cc5", kill_on_drop: false }`
[INFO] [stdout] 85a42575db1808a9a53cbea2969597534b773525b6b8b141bdbac0a8b9472cc5
