[INFO] fetching crate pantheon 0.1.2...
[INFO] testing pantheon-0.1.2 against 1.91.0 for beta-1.92-2
[INFO] extracting crate pantheon 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate pantheon 0.1.2
[INFO] finished tweaking crates.io crate pantheon 0.1.2
[INFO] tweaked toml for crates.io crate pantheon 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pantheon 0.1.2 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 246 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.4 (available: v0.3.6)
[INFO] [stderr]       Adding image v0.23.14 (available: v0.25.8)
[INFO] [stderr]       Adding js-sys v0.3.46 (available: v0.3.82)
[INFO] [stderr]       Adding nix v0.20.0 (available: v0.20.2)
[INFO] [stderr]       Adding plotters v0.3.0 (available: v0.3.7)
[INFO] [stderr]       Adding shaderc v0.6.3 (available: v0.10.1)
[INFO] [stderr]       Adding syn v1.0.65 (available: v1.0.109)
[INFO] [stderr]       Adding wasm-bindgen v0.2.69 (available: v0.2.105)
[INFO] [stderr]       Adding wasm-bindgen-backend v0.2.69 (available: v0.2.104)
[INFO] [stderr]       Adding wasm-bindgen-futures v0.4.19 (available: v0.4.55)
[INFO] [stderr]       Adding wasm-bindgen-macro v0.2.69 (available: v0.2.105)
[INFO] [stderr]       Adding wasm-bindgen-macro-support v0.2.69 (available: v0.2.105)
[INFO] [stderr]       Adding wasm-bindgen-shared v0.2.69 (available: v0.2.105)
[INFO] [stderr]       Adding web-sys v0.3.46 (available: v0.3.82)
[INFO] [stderr]       Adding wgpu v0.7.1 (available: v27.0.1)
[INFO] [stderr]       Adding winit v0.24.0 (available: v0.30.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gpu-alloc v0.3.2
[INFO] [stderr]   Downloaded xdg v2.5.2
[INFO] [stderr]   Downloaded shaderc v0.6.3
[INFO] [stderr]   Downloaded inplace_it v0.3.6
[INFO] [stderr]   Downloaded ahash v0.4.8
[INFO] [stderr]   Downloaded wgpu-core v0.7.2
[INFO] [stderr]   Downloaded criterion v0.3.4
[INFO] [stderr]   Downloaded plotters v0.3.0
[INFO] [stderr]   Downloaded shaderc-sys v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cac5ea4540e1b5c7c2e4cdd12c0c860b8b04209c20ba2abc4fe7f9230459248
[INFO] running `Command { std: "docker" "start" "-a" "3cac5ea4540e1b5c7c2e4cdd12c0c860b8b04209c20ba2abc4fe7f9230459248", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cac5ea4540e1b5c7c2e4cdd12c0c860b8b04209c20ba2abc4fe7f9230459248", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cac5ea4540e1b5c7c2e4cdd12c0c860b8b04209c20ba2abc4fe7f9230459248", kill_on_drop: false }`
[INFO] [stdout] 3cac5ea4540e1b5c7c2e4cdd12c0c860b8b04209c20ba2abc4fe7f9230459248
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1dfbd80275bfb9dd6828ba7342ac9e51b3c4c57c1f8503f862f972fe3d23b837
[INFO] running `Command { std: "docker" "start" "-a" "1dfbd80275bfb9dd6828ba7342ac9e51b3c4c57c1f8503f862f972fe3d23b837", kill_on_drop: false }`
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling spirv_headers v1.5.0
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling raw-window-handle v0.3.4
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling cc v1.2.44
[INFO] [stderr]    Compiling ttf-parser v0.15.2
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling khronos-egl v3.0.2
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling ahash v0.4.8
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling wgpu-core v0.7.2
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling gpu-descriptor-types v0.1.2
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling spirv_cross v0.23.1
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[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-2804f548907a507c/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] 
[INFO] [stderr]   thread 'main' (729) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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:     0x6180488e6c22 - std::backtrace_rs::backtrace::libunwind::trace::h62f3c6bea0fedab3
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x6180488e6c22 - std::backtrace_rs::backtrace::trace_unsynchronized::hc41aaca6c0af0bde
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x6180488e6c22 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x6180488e6c22 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h4e0a3aeea0f9c085
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x6180488f702f - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x6180488f702f - core::fmt::write::hecf68a131630c74d
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x6180488b6f21 - std::io::default_write_fmt::haf8355dc2afbec95
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x6180488b6f21 - std::io::Write::write_fmt::h93c9a261259c931a
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x6180488c1e82 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x6180488c489c - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x6180488c46f6 - std::panicking::default_hook::h63f9bf8161c5d325
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x6180488c4f25 - std::panicking::panic_with_hook::h3173740e06bd0752
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x6180488c4dba - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x6180488c1fc9 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x6180488ab27d - __rustc[de0091b922c53d7e]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x6180488faba0 - core::panicking::panic_fmt::h5138da2ef87be35b
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x618048826a8c - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::ha22ddcf8ecf5bc72
[INFO] [stderr]     17:     0x61804882c765 - core::option::Option<T>::unwrap_or_else::h13d45fa754f1f0af
[INFO] [stderr]     18:     0x618048826a0c - build_script_build::cmd_finder::CommandFinder::must_have::he445ed6a0b12cf5f
[INFO] [stderr]     19:     0x61804882a061 - build_script_build::main::hdbf68f1603fc114b
[INFO] [stderr]     20:     0x61804882b7e3 - core::ops::function::FnOnce::call_once::h71f30eb2f6149b17
[INFO] [stderr]     21:     0x61804882b346 - std::sys::backtrace::__rust_begin_short_backtrace::hfeebc796e7cc8649
[INFO] [stderr]     22:     0x61804882b279 - std::rt::lang_start::{{closure}}::ha047dd880a3e7317
[INFO] [stderr]     23:     0x6180488b8a50 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc7ed5622678f5124
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x6180488b8a50 - std::panicking::catch_unwind::do_call::hc59414a11cf2a25a
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x6180488b8a50 - std::panicking::catch_unwind::hff67b45e0819a036
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x6180488b8a50 - std::panic::catch_unwind::hec0fb0db85f7fd60
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x6180488b8a50 - std::rt::lang_start_internal::{{closure}}::h74bea026352620a3
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x6180488b8a50 - std::panicking::catch_unwind::do_call::h931ef1bf7bdfcae2
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x6180488b8a50 - std::panicking::catch_unwind::h3816830c825cbe04
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x6180488b8a50 - std::panic::catch_unwind::h408406c8f02ebb9d
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x6180488b8a50 - std::rt::lang_start_internal::hce2b8b328837374b
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x61804882b261 - std::rt::lang_start::hf810c5de45bb364c
[INFO] [stderr]     33:     0x61804882e285 - main
[INFO] [stderr]     34:     0x790de07551ca - <unknown>
[INFO] [stderr]     35:     0x790de075528b - __libc_start_main
[INFO] [stderr]     36:     0x618048825b95 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1dfbd80275bfb9dd6828ba7342ac9e51b3c4c57c1f8503f862f972fe3d23b837", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dfbd80275bfb9dd6828ba7342ac9e51b3c4c57c1f8503f862f972fe3d23b837", kill_on_drop: false }`
[INFO] [stdout] 1dfbd80275bfb9dd6828ba7342ac9e51b3c4c57c1f8503f862f972fe3d23b837
