[INFO] cloning repository https://github.com/mildcwen/vulkan-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mildcwen/vulkan-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmildcwen%2Fvulkan-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmildcwen%2Fvulkan-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 695a0a04195aa83f4be108f65198d44747fd2b2e
[INFO] checking mildcwen/vulkan-study against master#e08b80c0fb7667bdcd040761891701e576c42ec8 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmildcwen%2Fvulkan-study" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mildcwen/vulkan-study on toolchain e08b80c0fb7667bdcd040761891701e576c42ec8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mildcwen/vulkan-study
[INFO] finished tweaking git repo https://github.com/mildcwen/vulkan-study
[INFO] tweaked toml for git repo https://github.com/mildcwen/vulkan-study written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mildcwen/vulkan-study 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" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking mildcwen/vulkan-study against try#f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmildcwen%2Fvulkan-study" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mildcwen/vulkan-study on toolchain f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mildcwen/vulkan-study
[INFO] finished tweaking git repo https://github.com/mildcwen/vulkan-study
[INFO] tweaked toml for git repo https://github.com/mildcwen/vulkan-study written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mildcwen/vulkan-study 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" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "fetch" "--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
[ERROR] error running command: no output for 300 seconds
[INFO] checking mildcwen/vulkan-study against try#f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmildcwen%2Fvulkan-study" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mildcwen/vulkan-study on toolchain f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mildcwen/vulkan-study
[INFO] finished tweaking git repo https://github.com/mildcwen/vulkan-study
[INFO] tweaked toml for git repo https://github.com/mildcwen/vulkan-study written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mildcwen/vulkan-study 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" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "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 wayland-scanner v0.28.3
[INFO] [stderr]   Downloaded wayland-sys v0.28.3
[INFO] [stderr]   Downloaded wayland-cursor v0.28.3
[INFO] [stderr]   Downloaded vk-shader-macros-impl v0.2.6
[INFO] [stderr]   Downloaded vk-shader-macros v0.2.6
[INFO] [stderr]   Downloaded wayland-commons v0.28.3
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.12.2
[INFO] [stderr]   Downloaded wayland-client v0.28.3
[INFO] [stderr]   Downloaded wayland-protocols v0.28.3
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eeeba6fb502b981cf7a1777c1ec2826df8fbb609392620f4d0015d991daaf16
[INFO] running `Command { std: "docker" "start" "-a" "0eeeba6fb502b981cf7a1777c1ec2826df8fbb609392620f4d0015d991daaf16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eeeba6fb502b981cf7a1777c1ec2826df8fbb609392620f4d0015d991daaf16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eeeba6fb502b981cf7a1777c1ec2826df8fbb609392620f4d0015d991daaf16", kill_on_drop: false }`
[INFO] [stdout] 0eeeba6fb502b981cf7a1777c1ec2826df8fbb609392620f4d0015d991daaf16
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb398672a076f9fe1d3ee7b185bfdf3c9847c96e98215deb318962af58fa8bdf
[INFO] running `Command { std: "docker" "start" "-a" "fb398672a076f9fe1d3ee7b185bfdf3c9847c96e98215deb318962af58fa8bdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling wayland-sys v0.28.3
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]    Compiling wayland-scanner v0.28.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: shaderc-sys@0.6.3: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.3: System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.3`
[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-sys-af17fb88217cbfff/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr]   cargo:warning=System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/shaderc-sys-0.6.3/build/cmd_finder.rs:50:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5592e475214d - std::backtrace_rs::backtrace::libunwind::trace::he4cee25a8d06265a
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x5592e475214d - std::backtrace_rs::backtrace::trace_unsynchronized::hf9235b7798eb2158
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5592e475214d - std::sys::backtrace::_print_fmt::he2134a4ba8ab27d0
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5592e475214d - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hc0043eba5fc24579
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5592e4775c1b - core::fmt::rt::Argument::fmt::h29fa861097ad3a93
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5592e4775c1b - core::fmt::write::h119838c2e7959d9b
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/core/src/fmt/mod.rs:1178:21
[INFO] [stderr]      6:     0x5592e474eb03 - std::io::Write::write_fmt::hfa2e2de491a0de11
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/io/mod.rs:1823:15
[INFO] [stderr]      7:     0x5592e4753522 - std::sys::backtrace::BacktraceLock::print::h87110b56d9ea99e0
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x5592e4753522 - std::panicking::default_hook::{{closure}}::h67a38549bf1323c7
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:266:22
[INFO] [stderr]      9:     0x5592e475318e - std::panicking::default_hook::he1e0d2f15cf34183
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:293:9
[INFO] [stderr]     10:     0x5592e4753e1f - std::panicking::rust_panic_with_hook::h15929aae27d0f045
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:797:13
[INFO] [stderr]     11:     0x5592e4753b07 - std::panicking::begin_panic_handler::{{closure}}::h69bf721404af2a2a
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:671:13
[INFO] [stderr]     12:     0x5592e4752639 - std::sys::backtrace::__rust_end_short_backtrace::h3fed1e72c8b129f7
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/sys/backtrace.rs:170:18
[INFO] [stderr]     13:     0x5592e4753794 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:662:5
[INFO] [stderr]     14:     0x5592e4774a03 - core::panicking::panic_fmt::h33f74dc0a6a31044
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/core/src/panicking.rs:74:14
[INFO] [stderr]     15:     0x5592e46d9a73 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::hdf4c547f914a01d2
[INFO] [stderr]     16:     0x5592e46d6b83 - core::option::Option<T>::unwrap_or_else::h5edcc7113e9ff34b
[INFO] [stderr]     17:     0x5592e46d99dc - build_script_build::cmd_finder::CommandFinder::must_have::ha47620271f5a2340
[INFO] [stderr]     18:     0x5592e46dd730 - build_script_build::main::h66617186a7caea51
[INFO] [stderr]     19:     0x5592e46d60f3 - core::ops::function::FnOnce::call_once::h09decab622ba3115
[INFO] [stderr]     20:     0x5592e46d5976 - std::sys::backtrace::__rust_begin_short_backtrace::h8a78fdb29b7b8b26
[INFO] [stderr]     21:     0x5592e46d58d9 - std::rt::lang_start::{{closure}}::h143fb60df9805d60
[INFO] [stderr]     22:     0x5592e474a660 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h92aa37e0ef791ae1
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x5592e474a660 - std::panicking::try::do_call::h4ca0a700beb1eab4
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:554:40
[INFO] [stderr]     24:     0x5592e474a660 - std::panicking::try::h1534ad97285e32d2
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:518:19
[INFO] [stderr]     25:     0x5592e474a660 - std::panic::catch_unwind::h077d1b505dc85c28
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panic.rs:345:14
[INFO] [stderr]     26:     0x5592e474a660 - std::rt::lang_start_internal::{{closure}}::h460e26d7094b64ad
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/rt.rs:143:48
[INFO] [stderr]     27:     0x5592e474a660 - std::panicking::try::do_call::h558aefb0689bf5d5
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:554:40
[INFO] [stderr]     28:     0x5592e474a660 - std::panicking::try::hcea343d2eb398509
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panicking.rs:518:19
[INFO] [stderr]     29:     0x5592e474a660 - std::panic::catch_unwind::h69ac9919aad235d2
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/panic.rs:345:14
[INFO] [stderr]     30:     0x5592e474a660 - std::rt::lang_start_internal::h49518067bf91a8e4
[INFO] [stderr]                                  at /rustc/f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5/library/std/src/rt.rs:143:20
[INFO] [stderr]     31:     0x5592e46d58b7 - std::rt::lang_start::h8c17ea4fabb0c185
[INFO] [stderr]     32:     0x5592e46de135 - main
[INFO] [stderr]     33:     0x7f86edf56d90 - <unknown>
[INFO] [stderr]     34:     0x7f86edf56e40 - __libc_start_main
[INFO] [stderr]     35:     0x5592e46d4d35 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fb398672a076f9fe1d3ee7b185bfdf3c9847c96e98215deb318962af58fa8bdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb398672a076f9fe1d3ee7b185bfdf3c9847c96e98215deb318962af58fa8bdf", kill_on_drop: false }`
[INFO] [stdout] fb398672a076f9fe1d3ee7b185bfdf3c9847c96e98215deb318962af58fa8bdf