[INFO] fetching crate megafb 0.0.1...
[INFO] testing megafb-0.0.1 against master#ff2c56344c764af598ad33027e9c7a48881808ef for pr-118825
[INFO] extracting crate megafb 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate megafb 0.0.1 on toolchain ff2c56344c764af598ad33027e9c7a48881808ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate megafb 0.0.1
[INFO] finished tweaking crates.io crate megafb 0.0.1
[INFO] tweaked toml for crates.io crate megafb 0.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate megafb 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" "+ff2c56344c764af598ad33027e9c7a48881808ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded failure_derive v0.1.5
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[INFO] [stderr]   Downloaded stable_deref_trait v1.1.1
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[INFO] [stderr]   Downloaded d3d12 v0.1.0
[INFO] [stderr]   Downloaded cmake v0.1.40
[INFO] [stderr]   Downloaded winit v0.20.0-alpha2
[INFO] [stderr]   Downloaded objc v0.2.6
[INFO] [stderr]   Downloaded objc-foundation v0.1.1
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.15
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[INFO] [stderr]   Downloaded rand_pcg v0.1.2
[INFO] [stderr]   Downloaded fxhash v0.2.1
[INFO] [stderr]   Downloaded line_drawing v0.7.0
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[INFO] [stderr]   Downloaded wayland-protocols v0.21.13
[INFO] [stderr]   Downloaded arrayvec v0.4.11
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[INFO] [stderr]   Downloaded byteorder v1.3.2
[INFO] [stderr]   Downloaded ordered-float v1.0.2
[INFO] [stderr]   Downloaded parking_lot v0.7.1
[INFO] [stderr]   Downloaded core-foundation v0.6.4
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[INFO] [stderr]   Downloaded core-graphics v0.17.3
[INFO] [stderr]   Downloaded core-foundation-sys v0.6.2
[INFO] [stderr]   Downloaded wayland-client v0.21.13
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[INFO] [stderr]   Downloaded bumpalo v2.5.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.48
[INFO] [stderr]   Downloaded rand_chacha v0.1.1
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[INFO] [stderr]   Downloaded parking_lot v0.6.4
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[INFO] [stderr]   Downloaded mio v0.6.19
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[INFO] [stderr]   Downloaded dlib v0.4.1
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f2e27be86886f5153ae10a460e435e2f880fe3d47d04d41a43e273bd29ac3c4
[INFO] running `Command { std: "docker" "start" "-a" "6f2e27be86886f5153ae10a460e435e2f880fe3d47d04d41a43e273bd29ac3c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f2e27be86886f5153ae10a460e435e2f880fe3d47d04d41a43e273bd29ac3c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f2e27be86886f5153ae10a460e435e2f880fe3d47d04d41a43e273bd29ac3c4", kill_on_drop: false }`
[INFO] [stdout] 6f2e27be86886f5153ae10a460e435e2f880fe3d47d04d41a43e273bd29ac3c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b62fe89a444261fc672076973861a182ce3102419017a73e1bb7cfe841b635b
[INFO] running `Command { std: "docker" "start" "-a" "0b62fe89a444261fc672076973861a182ce3102419017a73e1bb7cfe841b635b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling downcast-rs v1.0.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling same-file v1.0.5
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling walkdir v2.2.9
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling stb_truetype v0.2.6
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.15
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling lock_api v0.2.0
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling wayland-scanner v0.23.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling shaderc-sys v0.6.0
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: shaderc-sys@0.6.0: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.0: Pre-built library not found.  Falling back to from-source build
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.0`
[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-3e82dea4bc6be97a/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=Pre-built library not found.  Falling back to from-source build
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/shaderc-sys-0.6.0/build/cmd_finder.rs:45:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55d0ba263c9c - std::backtrace_rs::backtrace::libunwind::trace::h03859d238dbdd93c
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x55d0ba263c9c - std::backtrace_rs::backtrace::trace_unsynchronized::h2e251246e2581a42
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55d0ba263c9c - std::sys_common::backtrace::_print_fmt::h5baa2f175792666a
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55d0ba263c9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h00d759009813d8ca
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55d0ba2899e0 - core::fmt::rt::Argument::fmt::hcd158635f297e549
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x55d0ba2899e0 - core::fmt::write::h9c5087e04fe38018
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x55d0ba2612cf - std::io::Write::write_fmt::h587b8e5eb2f9d067
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/io/mod.rs:1810:15
[INFO] [stderr]      7:     0x55d0ba263a84 - std::sys_common::backtrace::_print::h25969b404f42f4bb
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55d0ba263a84 - std::sys_common::backtrace::print::h68d3414e8c63fb83
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55d0ba2651a7 - std::panicking::default_hook::{{closure}}::hccfef51edabebb9a
[INFO] [stderr]     10:     0x55d0ba264f0f - std::panicking::default_hook::hdec7a4759fa427e8
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x55d0ba265628 - std::panicking::rust_panic_with_hook::h9d502a4da1912fba
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x55d0ba26550e - std::panicking::begin_panic_handler::{{closure}}::h3a68181f2e6a785b
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x55d0ba264166 - std::sys_common::backtrace::__rust_end_short_backtrace::hc1d088e8c1328911
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55d0ba265272 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x55d0ba1fb5d5 - core::panicking::panic_fmt::h15511a438b78bb2f
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x55d0ba1ff8d6 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::hec791d372faf51bf
[INFO] [stderr]     17:     0x55d0ba1fcf79 - core::option::Option<T>::unwrap_or_else::h8cff14af0249cb37
[INFO] [stderr]     18:     0x55d0ba1ff83a - build_script_build::cmd_finder::CommandFinder::must_have::hb0f5f47a2582d1ee
[INFO] [stderr]     19:     0x55d0ba201d42 - build_script_build::main::h34b93a3c9d2ad316
[INFO] [stderr]     20:     0x55d0ba1fc993 - core::ops::function::FnOnce::call_once::hae3a2bfcab1b7e29
[INFO] [stderr]     21:     0x55d0ba1fbde6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h423c35c59490c822
[INFO] [stderr]     22:     0x55d0ba1fc489 - std::rt::lang_start::{{closure}}::hccd19db1893cd60d
[INFO] [stderr]     23:     0x55d0ba25d1e7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::haf9fb8bf7327c1ff
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     24:     0x55d0ba25d1e7 - std::panicking::try::do_call::h67507db509654d44
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:552:40
[INFO] [stderr]     25:     0x55d0ba25d1e7 - std::panicking::try::h9fb9a4343adc941d
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:516:19
[INFO] [stderr]     26:     0x55d0ba25d1e7 - std::panic::catch_unwind::hf0df8339dcf82c92
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panic.rs:142:14
[INFO] [stderr]     27:     0x55d0ba25d1e7 - std::rt::lang_start_internal::{{closure}}::hca80cdac4aa434b3
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55d0ba25d1e7 - std::panicking::try::do_call::h30d3b7b6fd41cae7
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:552:40
[INFO] [stderr]     29:     0x55d0ba25d1e7 - std::panicking::try::h38f26474b74a3465
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:516:19
[INFO] [stderr]     30:     0x55d0ba25d1e7 - std::panic::catch_unwind::h453b3258a72394e6
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panic.rs:142:14
[INFO] [stderr]     31:     0x55d0ba25d1e7 - std::rt::lang_start_internal::hcbba8636b1c9aa3e
[INFO] [stderr]                                  at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55d0ba1fc467 - std::rt::lang_start::hd2d97adf867fa433
[INFO] [stderr]     33:     0x55d0ba2024b5 - main
[INFO] [stderr]     34:     0x7f95fc596d90 - <unknown>
[INFO] [stderr]     35:     0x7f95fc596e40 - __libc_start_main
[INFO] [stderr]     36:     0x55d0ba1fbd15 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0b62fe89a444261fc672076973861a182ce3102419017a73e1bb7cfe841b635b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b62fe89a444261fc672076973861a182ce3102419017a73e1bb7cfe841b635b", kill_on_drop: false }`
[INFO] [stdout] 0b62fe89a444261fc672076973861a182ce3102419017a73e1bb7cfe841b635b