[INFO] fetching crate vxdraw 0.6.0...
[INFO] testing vxdraw-0.6.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate vxdraw 0.6.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate vxdraw 0.6.0
[INFO] finished tweaking crates.io crate vxdraw 0.6.0
[INFO] tweaked toml for crates.io crate vxdraw 0.6.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vxdraw 0.6.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 354 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.4.12 (available: v0.7.6)
[INFO] [stderr]       Adding cgmath v0.17.0 (available: v0.18.0)
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding fast-logger v0.5.1 (available: v0.7.1)
[INFO] [stderr]       Adding gfx-backend-dx12 v0.3.5 (available: v0.9.1)
[INFO] [stderr]       Adding gfx-backend-gl v0.3.0 (available: v0.9.0)
[INFO] [stderr]       Adding gfx-backend-metal v0.3.3 (available: v0.9.1)
[INFO] [stderr]       Adding gfx-backend-vulkan v0.3.3 (available: v0.9.0)
[INFO] [stderr]       Adding gfx-hal v0.3.1 (available: v0.9.0)
[INFO] [stderr]       Adding ggez v0.5.1 (available: v0.9.3)
[INFO] [stderr]       Adding glutin v0.20.1 (available: v0.32.3)
[INFO] [stderr]       Adding glyph_brush v0.5.4 (available: v0.7.12)
[INFO] [stderr]       Adding image v0.22.5 (available: v0.25.8)
[INFO] [stderr]       Adding itertools v0.8.2 (available: v0.14.0)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_pcg v0.1.2 (available: v0.9.0)
[INFO] [stderr]       Adding shaderc v0.6.3 (available: v0.10.1)
[INFO] [stderr]       Adding winit v0.19.5 (available: v0.30.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b3205ad253658de0a32c43f713bdf2c8a372aca665c021543ac12e8e5b8bfae
[INFO] running `Command { std: "docker" "start" "-a" "6b3205ad253658de0a32c43f713bdf2c8a372aca665c021543ac12e8e5b8bfae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b3205ad253658de0a32c43f713bdf2c8a372aca665c021543ac12e8e5b8bfae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3205ad253658de0a32c43f713bdf2c8a372aca665c021543ac12e8e5b8bfae", kill_on_drop: false }`
[INFO] [stdout] 6b3205ad253658de0a32c43f713bdf2c8a372aca665c021543ac12e8e5b8bfae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3305c8c688af39081c6379d2755451ca8fddaf19d20e3274573592d1145b2d6
[INFO] running `Command { std: "docker" "start" "-a" "c3305c8c688af39081c6379d2755451ca8fddaf19d20e3274573592d1145b2d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling xml-rs v0.8.27
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling wayland-sys v0.21.13
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling xdg v2.5.2
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr] warning: shaderc-sys@0.6.3: Requested 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-6fb4b0ad176c8456/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Requested to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (231) 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:     0x5f7df49d5242 - std::backtrace_rs::backtrace::libunwind::trace::hc4a5f428cfb78751
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5f7df49d5242 - std::backtrace_rs::backtrace::trace_unsynchronized::h20e1095684b4c296
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5f7df49d5242 - std::sys::backtrace::_print_fmt::h461f2e3a8f6b29e2
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5f7df49d5242 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h4ee3a75aa71a2c45
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5f7df49f6c5f - core::fmt::rt::Argument::fmt::h6f1564705cd089af
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5f7df49f6c5f - core::fmt::write::h21ca93b65a7c281a
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x5f7df49c5e83 - std::io::default_write_fmt::h745a1edf2999cb3b
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5f7df49c5e83 - std::io::Write::write_fmt::hfc56e66d6e189682
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5f7df49d5892 - std::sys::backtrace::BacktraceLock::print::h58d5d73f9e953cf1
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5f7df49c2d3c - std::panicking::default_hook::{{closure}}::h1457fbe47c9457d1
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x5f7df49c2b7c - std::panicking::default_hook::hccb5e73b206c0830
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x5f7df49c38da - std::panicking::panic_with_hook::h3190ecc6229cdd29
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x5f7df49d569a - std::panicking::panic_handler::{{closure}}::ha1f1b769bc2bb40c
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x5f7df49d55f9 - std::sys::backtrace::__rust_end_short_backtrace::h5f9cf66f19c2a172
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x5f7df49c363d - __rustc[a93bd50104b99ad4]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x5f7df49fa4d0 - core::panicking::panic_fmt::hc70c3c83f13c1375
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5f7df492ed7c - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h9fd3fbf2966bd3cb
[INFO] [stderr]     17:     0x5f7df4928d85 - core::option::Option<T>::unwrap_or_else::h065bcb0df2411fdd
[INFO] [stderr]     18:     0x5f7df492f62c - build_script_build::cmd_finder::CommandFinder::must_have::hac739f30a8a121a2
[INFO] [stderr]     19:     0x5f7df492d361 - build_script_build::main::h38c03584472e1e0c
[INFO] [stderr]     20:     0x5f7df492a053 - core::ops::function::FnOnce::call_once::h4e5e124ddf377828
[INFO] [stderr]     21:     0x5f7df4929dc6 - std::sys::backtrace::__rust_begin_short_backtrace::h6b534a095dc9c704
[INFO] [stderr]     22:     0x5f7df4928df9 - std::rt::lang_start::{{closure}}::h906aba9004c30920
[INFO] [stderr]     23:     0x5f7df49d6060 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hae16bf8966719858
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     24:     0x5f7df49d6060 - std::panicking::catch_unwind::do_call::hd4eb7cf01d0f66cd
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x5f7df49d6060 - std::panicking::catch_unwind::h35b4afc45093edf5
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x5f7df49d6060 - std::panic::catch_unwind::h5a7ef11ac2fa7980
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5f7df49d6060 - std::rt::lang_start_internal::{{closure}}::h18f8e059e8eb5f5a
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5f7df49d6060 - std::panicking::catch_unwind::do_call::hb4f94f34ea41283f
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x5f7df49d6060 - std::panicking::catch_unwind::hfbb31091ea806204
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x5f7df49d6060 - std::panic::catch_unwind::hc88f452387620cfb
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5f7df49d6060 - std::rt::lang_start_internal::h23cfb6dcbf9c9010
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5f7df4928de1 - std::rt::lang_start::hb01141e8d974cbf0
[INFO] [stderr]     33:     0x5f7df4930cb5 - main
[INFO] [stderr]     34:     0x70c80ea6b1ca - <unknown>
[INFO] [stderr]     35:     0x70c80ea6b28b - __libc_start_main
[INFO] [stderr]     36:     0x5f7df4928695 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c3305c8c688af39081c6379d2755451ca8fddaf19d20e3274573592d1145b2d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3305c8c688af39081c6379d2755451ca8fddaf19d20e3274573592d1145b2d6", kill_on_drop: false }`
[INFO] [stdout] c3305c8c688af39081c6379d2755451ca8fddaf19d20e3274573592d1145b2d6