[INFO] fetching crate kakapo 0.0.1...
[INFO] checking kakapo-0.0.1 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate kakapo 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate kakapo 0.0.1 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kakapo 0.0.1
[INFO] finished tweaking crates.io crate kakapo 0.0.1
[INFO] tweaked toml for crates.io crate kakapo 0.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate kakapo 0.0.1 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wgpu-types v0.6.1
[INFO] [stderr]   Downloaded wgpu v0.6.2
[INFO] [stderr]   Downloaded gfx-backend-empty v0.6.0
[INFO] [stderr]   Downloaded darling_macro v0.10.3
[INFO] [stderr]   Downloaded darling v0.10.3
[INFO] [stderr]   Downloaded jobserver v0.1.21
[INFO] [stderr]   Downloaded darling_core v0.10.3
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.6
[INFO] [stderr]   Downloaded inplace_it v0.3.2
[INFO] [stderr]   Downloaded gfx-auxil v0.7.0
[INFO] [stderr]   Downloaded range-alloc v0.1.1
[INFO] [stderr]   Downloaded gfx-descriptor v0.2.0
[INFO] [stderr]   Downloaded typed-arena v2.0.1
[INFO] [stderr]   Downloaded shaderc v0.6.3
[INFO] [stderr]   Downloaded futures-executor v0.3.8
[INFO] [stderr]   Downloaded bytemuck v1.4.1
[INFO] [stderr]   Downloaded anyhow v1.0.35
[INFO] [stderr]   Downloaded wgpu-core v0.6.5
[INFO] [stderr]   Downloaded gfx-backend-dx11 v0.6.17
[INFO] [stderr]   Downloaded gfx-backend-dx12 v0.6.13
[INFO] [stderr]   Downloaded gfx-hal v0.6.0
[INFO] [stderr]   Downloaded x11 v2.18.2
[INFO] [stderr]   Downloaded gfx-backend-metal v0.6.5
[INFO] [stderr]   Downloaded gfx-backend-vulkan v0.6.5
[INFO] [stderr]   Downloaded futures v0.3.8
[INFO] [stderr]   Downloaded naga v0.2.0
[INFO] [stderr]   Downloaded cmake v0.1.45
[INFO] [stderr]   Downloaded futures-macro v0.3.8
[INFO] [stderr]   Downloaded gfx-memory v0.2.2
[INFO] [stderr]   Downloaded spirv_cross v0.22.1
[INFO] [stderr]   Downloaded metal v0.20.0
[INFO] [stderr]   Downloaded shaderc-sys v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5f8762ef679938b029b7ef82b83fe9f7745906a2fa8fcfe93a4c92ef1e184a6
[INFO] running `Command { std: "docker" "start" "-a" "e5f8762ef679938b029b7ef82b83fe9f7745906a2fa8fcfe93a4c92ef1e184a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5f8762ef679938b029b7ef82b83fe9f7745906a2fa8fcfe93a4c92ef1e184a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f8762ef679938b029b7ef82b83fe9f7745906a2fa8fcfe93a4c92ef1e184a6", kill_on_drop: false }`
[INFO] [stdout] e5f8762ef679938b029b7ef82b83fe9f7745906a2fa8fcfe93a4c92ef1e184a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4b90a955928c3e0929e4856559e4d7cd14e40c49b0efff64fa4586f9bfdc158
[INFO] running `Command { std: "docker" "start" "-a" "c4b90a955928c3e0929e4856559e4d7cd14e40c49b0efff64fa4586f9bfdc158", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking libloading v0.6.6
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling wayland-sys v0.28.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling wayland-scanner v0.28.2
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking gfx-hal v0.6.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling wayland-client v0.28.2
[INFO] [stderr]    Compiling wayland-protocols v0.28.2
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[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] 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-f438730da979739e/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:     0x5957ffdffd1a - std::backtrace_rs::backtrace::libunwind::trace::h3d1148b7268e4456
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x5957ffdffd1a - std::backtrace_rs::backtrace::trace_unsynchronized::hcd8d8263202addd9
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5957ffdffd1a - std::sys::backtrace::_print_fmt::h812e4f55de0da7fc
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5957ffdffd1a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h906dff65e8b7c000
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5957ffe23a33 - core::fmt::rt::Argument::fmt::hb1625b4525552ddc
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/fmt/rt.rs:177:76
[INFO] [stderr]      5:     0x5957ffe23a33 - core::fmt::write::h44024895ba49323a
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/fmt/mod.rs:1189:21
[INFO] [stderr]      6:     0x5957ffdfc453 - std::io::Write::write_fmt::hf3c4d9bb313458e6
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/io/mod.rs:1887:15
[INFO] [stderr]      7:     0x5957ffdffb62 - std::sys::backtrace::BacktraceLock::print::h70dc6513b8f1948d
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x5957ffe00d5c - std::panicking::default_hook::{{closure}}::h4e46246c986b21f2
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:268:22
[INFO] [stderr]      9:     0x5957ffe00ba2 - std::panicking::default_hook::h149f583b31249354
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:295:9
[INFO] [stderr]     10:     0x5957ffe01397 - std::panicking::rust_panic_with_hook::h9f77e00b577fb66f
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:801:13
[INFO] [stderr]     11:     0x5957ffe0122a - std::panicking::begin_panic_handler::{{closure}}::h05dd299f621afec5
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:674:13
[INFO] [stderr]     12:     0x5957ffe001f9 - std::sys::backtrace::__rust_end_short_backtrace::h1ac5e80eb199b5e7
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:170:18
[INFO] [stderr]     13:     0x5957ffe00ebc - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:665:5
[INFO] [stderr]     14:     0x5957ffe22880 - core::panicking::panic_fmt::hdb7e6f3ae56c06a6
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/panicking.rs:76:14
[INFO] [stderr]     15:     0x5957ffd83c43 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h5c64e80cf02f9a79
[INFO] [stderr]     16:     0x5957ffd80ec3 - core::option::Option<T>::unwrap_or_else::h7bad89b16abb91c4
[INFO] [stderr]     17:     0x5957ffd83bac - build_script_build::cmd_finder::CommandFinder::must_have::h70587a27b2c72dce
[INFO] [stderr]     18:     0x5957ffd87900 - build_script_build::main::ha04dde16a0c46ca3
[INFO] [stderr]     19:     0x5957ffd80403 - core::ops::function::FnOnce::call_once::h48b76e93476aa3ba
[INFO] [stderr]     20:     0x5957ffd7fbb6 - std::sys::backtrace::__rust_begin_short_backtrace::h594f8c66fae11ba0
[INFO] [stderr]     21:     0x5957ffd7fb19 - std::rt::lang_start::{{closure}}::hfdea2b4da54c1d5d
[INFO] [stderr]     22:     0x5957ffdf7d57 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h9b826323d0f6f52d
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x5957ffdf7d57 - std::panicking::try::do_call::h11b8cb37e889e723
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:557:40
[INFO] [stderr]     24:     0x5957ffdf7d57 - std::panicking::try::h8c0c35eed4b91402
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:520:19
[INFO] [stderr]     25:     0x5957ffdf7d57 - std::panic::catch_unwind::hdd9725084aceebb7
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panic.rs:358:14
[INFO] [stderr]     26:     0x5957ffdf7d57 - std::rt::lang_start_internal::{{closure}}::h70a2b8736f81fb2f
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/rt.rs:174:48
[INFO] [stderr]     27:     0x5957ffdf7d57 - std::panicking::try::do_call::h9dbefce92b360333
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:557:40
[INFO] [stderr]     28:     0x5957ffdf7d57 - std::panicking::try::h69f0829c3d3bd7a7
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:520:19
[INFO] [stderr]     29:     0x5957ffdf7d57 - std::panic::catch_unwind::haf848aa83b38ef16
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panic.rs:358:14
[INFO] [stderr]     30:     0x5957ffdf7d57 - std::rt::lang_start_internal::ha915624e2796630d
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/rt.rs:174:20
[INFO] [stderr]     31:     0x5957ffd7faf7 - std::rt::lang_start::hf1415974536f4e97
[INFO] [stderr]     32:     0x5957ffd88305 - main
[INFO] [stderr]     33:     0x71e96ea07d90 - <unknown>
[INFO] [stderr]     34:     0x71e96ea07e40 - __libc_start_main
[INFO] [stderr]     35:     0x5957ffd7f105 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c4b90a955928c3e0929e4856559e4d7cd14e40c49b0efff64fa4586f9bfdc158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4b90a955928c3e0929e4856559e4d7cd14e40c49b0efff64fa4586f9bfdc158", kill_on_drop: false }`
[INFO] [stdout] c4b90a955928c3e0929e4856559e4d7cd14e40c49b0efff64fa4586f9bfdc158
