[INFO] cloning repository https://github.com/Chrizzsh/bezier-curve
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Chrizzsh/bezier-curve" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChrizzsh%2Fbezier-curve", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChrizzsh%2Fbezier-curve'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f81fa6fa8e1fc21f77f0c49a597d68a2aa052ac0
[INFO] checking Chrizzsh/bezier-curve against try#2b39fe756f52bc2825bf5b2bfc385cab922dae10 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChrizzsh%2Fbezier-curve" "/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/Chrizzsh/bezier-curve
[INFO] finished tweaking git repo https://github.com/Chrizzsh/bezier-curve
[INFO] tweaked toml for git repo https://github.com/Chrizzsh/bezier-curve written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Chrizzsh/bezier-curve on toolchain 2b39fe756f52bc2825bf5b2bfc385cab922dae10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Chrizzsh/bezier-curve 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" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 617caa826f2a2a376efb7cfdaed94f18066e53cd434c6b6db92f472587c90f45
[INFO] running `Command { std: "docker" "start" "-a" "617caa826f2a2a376efb7cfdaed94f18066e53cd434c6b6db92f472587c90f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "617caa826f2a2a376efb7cfdaed94f18066e53cd434c6b6db92f472587c90f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617caa826f2a2a376efb7cfdaed94f18066e53cd434c6b6db92f472587c90f45", kill_on_drop: false }`
[INFO] [stdout] 617caa826f2a2a376efb7cfdaed94f18066e53cd434c6b6db92f472587c90f45
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff1eaefabc26db2210b6d14845961da7b169500542cbef9b129496e4af750c33
[INFO] running `Command { std: "docker" "start" "-a" "ff1eaefabc26db2210b6d14845961da7b169500542cbef9b129496e4af750c33", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking libloading v0.6.6
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking smallvec v1.6.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking gfx-hal v0.6.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking futures-channel v0.3.8
[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-7d049adc9473937d/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' 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:     0x5d681285e2d2 - std::backtrace_rs::backtrace::libunwind::trace::h7832c52827c08170
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5d681285e2d2 - std::backtrace_rs::backtrace::trace_unsynchronized::he6d92e6eb24a4073
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5d681285e2d2 - std::sys::backtrace::_print_fmt::hf139cc888d064b09
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5d681285e2d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h7083fbd4e20a000f
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5d6812881373 - core::fmt::rt::Argument::fmt::h9d8c637e6bfd5ccf
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5d6812881373 - core::fmt::write::hdf3c6ae14c3e8125
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/core/src/fmt/mod.rs:1465:25
[INFO] [stderr]      6:     0x5d681285acf3 - std::io::default_write_fmt::h15936264287de7bf
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5d681285acf3 - std::io::Write::write_fmt::h84df75adb307f7e6
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5d681285e122 - std::sys::backtrace::BacktraceLock::print::h30a2059d03e705e4
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5d681285f556 - std::panicking::default_hook::{{closure}}::hf489e9f54ce49c27
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x5d681285f359 - std::panicking::default_hook::h20d961ad9a0e12f0
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x5d681285ff62 - std::panicking::rust_panic_with_hook::h306db6d00921085e
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x5d681285fcfa - std::panicking::begin_panic_handler::{{closure}}::h19782e9851ecb030
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x5d681285e7c9 - std::sys::backtrace::__rust_end_short_backtrace::h475e7ebac10ba75b
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     14:     0x5d681285f98d - __rustc[3b00513142ba1c9a]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x5d68128802e0 - core::panicking::panic_fmt::h6940cb0a7d852762
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5d68127e2a28 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h323fb3117e41aa59
[INFO] [stderr]     17:     0x5d68127dff85 - core::option::Option<T>::unwrap_or_else::hec366615622fe67e
[INFO] [stderr]     18:     0x5d68127e29ac - build_script_build::cmd_finder::CommandFinder::must_have::h0154a68c6bb474c9
[INFO] [stderr]     19:     0x5d68127e6364 - build_script_build::main::hbd0dd5fe30934d76
[INFO] [stderr]     20:     0x5d68127df1b3 - core::ops::function::FnOnce::call_once::hb4c039a3e3824508
[INFO] [stderr]     21:     0x5d68127dec66 - std::sys::backtrace::__rust_begin_short_backtrace::h08f4c832c4e294a7
[INFO] [stderr]     22:     0x5d68127debe9 - std::rt::lang_start::{{closure}}::h6868f1893537268f
[INFO] [stderr]     23:     0x5d68128561b0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h0021e0fe3c5bf8c3
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/core/src/ops/function.rs:284:21
[INFO] [stderr]     24:     0x5d68128561b0 - std::panicking::catch_unwind::do_call::hfef49f2cd13a22dd
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x5d68128561b0 - std::panicking::catch_unwind::h34968869e68aaad1
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x5d68128561b0 - std::panic::catch_unwind::h5235c74f5d682697
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5d68128561b0 - std::rt::lang_start_internal::{{closure}}::hcee20ca47ef7f51b
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5d68128561b0 - std::panicking::catch_unwind::do_call::h359adcb901a84505
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:589:40
[INFO] [stderr]     29:     0x5d68128561b0 - std::panicking::catch_unwind::h8f4f1e91d2aabe23
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panicking.rs:552:19
[INFO] [stderr]     30:     0x5d68128561b0 - std::panic::catch_unwind::h73a78f1a5b0a6154
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5d68128561b0 - std::rt::lang_start_internal::he64187ddd3d90437
[INFO] [stderr]                                  at /rustc/2b39fe756f52bc2825bf5b2bfc385cab922dae10/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5d68127debd1 - std::rt::lang_start::ha7c16bd44e68afb7
[INFO] [stderr]     33:     0x5d68127e6d45 - main
[INFO] [stderr]     34:     0x73e4846211ca - <unknown>
[INFO] [stderr]     35:     0x73e48462128b - __libc_start_main
[INFO] [stderr]     36:     0x5d68127de3b5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ff1eaefabc26db2210b6d14845961da7b169500542cbef9b129496e4af750c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff1eaefabc26db2210b6d14845961da7b169500542cbef9b129496e4af750c33", kill_on_drop: false }`
[INFO] [stdout] ff1eaefabc26db2210b6d14845961da7b169500542cbef9b129496e4af750c33
