[INFO] cloning repository https://github.com/HLennart/grounding
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HLennart/grounding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHLennart%2Fgrounding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHLennart%2Fgrounding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03373143fd779be8372899e826d43d83052997aa
[INFO] checking HLennart/grounding against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHLennart%2Fgrounding" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HLennart/grounding on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HLennart/grounding
[INFO] finished tweaking git repo https://github.com/HLennart/grounding
[INFO] tweaked toml for git repo https://github.com/HLennart/grounding written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/HLennart/grounding 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" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5145809c58d692360346dacce28d3899e5c2f47a52b90cc458203393724571bb
[INFO] running `Command { std: "docker" "start" "-a" "5145809c58d692360346dacce28d3899e5c2f47a52b90cc458203393724571bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5145809c58d692360346dacce28d3899e5c2f47a52b90cc458203393724571bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5145809c58d692360346dacce28d3899e5c2f47a52b90cc458203393724571bb", kill_on_drop: false }`
[INFO] [stdout] 5145809c58d692360346dacce28d3899e5c2f47a52b90cc458203393724571bb
[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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfffc7d74c359dcbd41ed673211962529f08678ba7d01a2ae8f141f83f4cd3a5
[INFO] running `Command { std: "docker" "start" "-a" "dfffc7d74c359dcbd41ed673211962529f08678ba7d01a2ae8f141f83f4cd3a5", 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 v0.1.10
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling wayland-sys v0.28.3
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling wayland-scanner v0.28.3
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking ash v0.31.0
[INFO] [stderr]     Checking spirv_headers v1.5.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking inplace_it v0.3.2
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]     Checking rusttype v0.9.2
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking gfx-hal v0.6.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling wayland-client v0.28.3
[INFO] [stderr]    Compiling wayland-protocols v0.28.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking wgpu-types v0.6.1
[INFO] [stderr]     Checking thread_local v1.1.0
[INFO] [stderr]    Compiling tokio v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]    Compiling shaderc-sys v0.7.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking simba v0.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr] warning: shaderc-sys@0.7.0: shaderc: searching for native shaderc libraries on system;  use '--features build-from-source' to force building from source code
[INFO] [stderr] warning: shaderc-sys@0.7.0: shaderc: cannot find native shaderc library on system; falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.7.0`
[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-3de76844a286def8/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=shaderc: searching for native shaderc libraries on system;  use '--features build-from-source' to force building from source code
[INFO] [stderr]   cargo:warning=shaderc: cannot find native shaderc library on system; falling back to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.7.0/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:     0x5f053146bdb0 - std::backtrace_rs::backtrace::libunwind::trace::hadda5b3c123dc3bb
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x5f053146bdb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h251baf92d3d99d58
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5f053146bdb0 - std::sys::backtrace::_print_fmt::he064a6bd4bc8a74c
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5f053146bdb0 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::haf1177ce001c5aba
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5f0531490753 - core::fmt::rt::Argument::fmt::h13d92de871fbc7d2
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/core/src/fmt/rt.rs:177:76
[INFO] [stderr]      5:     0x5f0531490753 - core::fmt::write::h1a1a904f0a5a0299
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/core/src/fmt/mod.rs:1449:21
[INFO] [stderr]      6:     0x5f05314682a3 - std::io::Write::write_fmt::h50a28dda2e43fcfb
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/io/mod.rs:1890:15
[INFO] [stderr]      7:     0x5f053146bc02 - std::sys::backtrace::BacktraceLock::print::h157a5b5bafa82524
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x5f053146cd8f - std::panicking::default_hook::{{closure}}::hbf38c704020fd551
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:298:22
[INFO] [stderr]      9:     0x5f053146cbfa - std::panicking::default_hook::h3b53f3f0a8a63ac3
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:325:9
[INFO] [stderr]     10:     0x5f053146d7b2 - std::panicking::rust_panic_with_hook::h7056095ba66a66e9
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:831:13
[INFO] [stderr]     11:     0x5f053146d53a - std::panicking::begin_panic_handler::{{closure}}::h5cd21fc1f38bc0b5
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:704:13
[INFO] [stderr]     12:     0x5f053146c2b9 - std::sys::backtrace::__rust_end_short_backtrace::h870aa48417f960ec
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     13:     0x5f053146d1cd - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:695:5
[INFO] [stderr]     14:     0x5f053148f5c0 - core::panicking::panic_fmt::h3be781a2b5cd0694
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/core/src/panicking.rs:75:14
[INFO] [stderr]     15:     0x5f05313f2c6c - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h4ba45e7a0b3991eb
[INFO] [stderr]     16:     0x5f05313effd3 - core::option::Option<T>::unwrap_or_else::h590413b929513294
[INFO] [stderr]     17:     0x5f05313f2bec - build_script_build::cmd_finder::CommandFinder::must_have::h9c4b2ced5700d2ff
[INFO] [stderr]     18:     0x5f05313f603b - build_script_build::main::h1bc5334e2fdf0799
[INFO] [stderr]     19:     0x5f05313ef5e3 - core::ops::function::FnOnce::call_once::haf797b3eb9f2ecd2
[INFO] [stderr]     20:     0x5f05313eeca6 - std::sys::backtrace::__rust_begin_short_backtrace::h9874b89b9c9133df
[INFO] [stderr]     21:     0x5f05313eec29 - std::rt::lang_start::{{closure}}::h73ac3f4610650fb0
[INFO] [stderr]     22:     0x5f0531463620 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h1e885987d45d34ff
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x5f0531463620 - std::panicking::try::do_call::h8a97b1757e207774
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:587:40
[INFO] [stderr]     24:     0x5f0531463620 - std::panicking::try::h92f474ce5157261d
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:550:19
[INFO] [stderr]     25:     0x5f0531463620 - std::panic::catch_unwind::h90427f977335690d
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panic.rs:358:14
[INFO] [stderr]     26:     0x5f0531463620 - std::rt::lang_start_internal::{{closure}}::h28c58ffd66de695b
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/rt.rs:168:24
[INFO] [stderr]     27:     0x5f0531463620 - std::panicking::try::do_call::he6cef74ecc3ff7c6
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:587:40
[INFO] [stderr]     28:     0x5f0531463620 - std::panicking::try::h6657572b256b949b
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panicking.rs:550:19
[INFO] [stderr]     29:     0x5f0531463620 - std::panic::catch_unwind::h0a856d006a19410f
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/panic.rs:358:14
[INFO] [stderr]     30:     0x5f0531463620 - std::rt::lang_start_internal::h10d6e5d37af84b89
[INFO] [stderr]                                  at /rustc/a3dffdb3a32d0dedc198f9de7d43173f3eb6727b/library/std/src/rt.rs:164:5
[INFO] [stderr]     31:     0x5f05313eec11 - std::rt::lang_start::h2de47760b5413478
[INFO] [stderr]     32:     0x5f05313f6a85 - main
[INFO] [stderr]     33:     0x789a5bfffd90 - <unknown>
[INFO] [stderr]     34:     0x789a5bfffe40 - __libc_start_main
[INFO] [stderr]     35:     0x5f05313ee295 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dfffc7d74c359dcbd41ed673211962529f08678ba7d01a2ae8f141f83f4cd3a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfffc7d74c359dcbd41ed673211962529f08678ba7d01a2ae8f141f83f4cd3a5", kill_on_drop: false }`
[INFO] [stdout] dfffc7d74c359dcbd41ed673211962529f08678ba7d01a2ae8f141f83f4cd3a5
