[INFO] fetching crate megafb 0.0.1...
[INFO] checking megafb-0.0.1 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate megafb 0.0.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate megafb 0.0.1 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "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-1-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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wayland-sys v0.23.5
[INFO] [stderr]   Downloaded wayland-client v0.23.5
[INFO] [stderr]   Downloaded downcast-rs v1.0.4
[INFO] [stderr]   Downloaded wayland-commons v0.23.5
[INFO] [stderr]   Downloaded log v0.4.7
[INFO] [stderr]   Downloaded storage-map v0.1.2
[INFO] [stderr]   Downloaded objc_exception v0.1.1
[INFO] [stderr]   Downloaded range-alloc v0.1.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.48
[INFO] [stderr]   Downloaded core-video-sys v0.1.3
[INFO] [stderr]   Downloaded d3d12 v0.1.0
[INFO] [stderr]   Downloaded calloop v0.4.4
[INFO] [stderr]   Downloaded ordered-float v1.0.2
[INFO] [stderr]   Downloaded copyless v0.1.4
[INFO] [stderr]   Downloaded metal v0.15.0
[INFO] [stderr]   Downloaded cocoa v0.18.4
[INFO] [stderr]   Downloaded gfx-backend-dx12 v0.2.1
[INFO] [stderr]   Downloaded gfx-backend-metal v0.2.3
[INFO] [stderr]   Downloaded bumpalo v2.5.0
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.48
[INFO] [stderr]   Downloaded winit v0.19.1
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded syn v0.15.40
[INFO] [stderr]   Downloaded wayland-protocols v0.23.5
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.6.3
[INFO] [stderr]   Downloaded js-sys v0.3.25
[INFO] [stderr]   Downloaded x11 v2.18.1
[INFO] [stderr]   Downloaded backtrace v0.3.33
[INFO] [stderr]   Downloaded parking_lot v0.8.0
[INFO] [stderr]   Downloaded rusttype v0.7.7
[INFO] [stderr]   Downloaded winit v0.20.0-alpha2
[INFO] [stderr]   Downloaded dispatch v0.1.4
[INFO] [stderr]   Downloaded objc v0.2.6
[INFO] [stderr]   Downloaded arrayvec v0.4.11
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.48
[INFO] [stderr]   Downloaded derivative v1.0.2
[INFO] [stderr]   Downloaded parking_lot_core v0.5.0
[INFO] [stderr]   Downloaded stb_truetype v0.2.6
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.48
[INFO] [stderr]   Downloaded cmake v0.1.40
[INFO] [stderr]   Downloaded lock_api v0.2.0
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded mio-extras v2.0.5
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.48
[INFO] [stderr]   Downloaded shaderc v0.6.0
[INFO] [stderr]   Downloaded wayland-scanner v0.23.5
[INFO] [stderr]   Downloaded spirv_cross v0.12.1
[INFO] [stderr]   Downloaded shaderc-sys v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c05d534844b5b64000d2cd305a7f86428241c64692f519ef6c71534c4316387
[INFO] running `Command { std: "docker" "start" "-a" "8c05d534844b5b64000d2cd305a7f86428241c64692f519ef6c71534c4316387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c05d534844b5b64000d2cd305a7f86428241c64692f519ef6c71534c4316387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c05d534844b5b64000d2cd305a7f86428241c64692f519ef6c71534c4316387", kill_on_drop: false }`
[INFO] [stdout] 8c05d534844b5b64000d2cd305a7f86428241c64692f519ef6c71534c4316387
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba0804bce85a3e38ac49657dad7efc7044b68260c0baf5bcedd98588212d38cb
[INFO] running `Command { std: "docker" "start" "-a" "ba0804bce85a3e38ac49657dad7efc7044b68260c0baf5bcedd98588212d38cb", 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]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling wayland-scanner v0.23.5
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking wayland-sys v0.23.5
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling shaderc-sys v0.6.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking lock_api v0.2.0
[INFO] [stderr]    Compiling wayland-client v0.23.5
[INFO] [stderr]    Compiling wayland-protocols v0.23.5
[INFO] [stderr]     Checking backtrace v0.3.33
[INFO] [stderr]     Checking memmap v0.7.0
[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] 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:     0x5ff3a1b2a56a - std::backtrace_rs::backtrace::libunwind::trace::h3d1148b7268e4456
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x5ff3a1b2a56a - std::backtrace_rs::backtrace::trace_unsynchronized::hcd8d8263202addd9
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5ff3a1b2a56a - std::sys::backtrace::_print_fmt::h812e4f55de0da7fc
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5ff3a1b2a56a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h906dff65e8b7c000
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5ff3a1b4dc13 - core::fmt::rt::Argument::fmt::hb1625b4525552ddc
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/fmt/rt.rs:177:76
[INFO] [stderr]      5:     0x5ff3a1b4dc13 - core::fmt::write::h44024895ba49323a
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/fmt/mod.rs:1189:21
[INFO] [stderr]      6:     0x5ff3a1b26d83 - std::io::Write::write_fmt::hf3c4d9bb313458e6
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/io/mod.rs:1887:15
[INFO] [stderr]      7:     0x5ff3a1b2a3b2 - std::sys::backtrace::BacktraceLock::print::h70dc6513b8f1948d
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x5ff3a1b2b5ac - std::panicking::default_hook::{{closure}}::h4e46246c986b21f2
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:268:22
[INFO] [stderr]      9:     0x5ff3a1b2b3f2 - std::panicking::default_hook::h149f583b31249354
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:295:9
[INFO] [stderr]     10:     0x5ff3a1b2bba7 - std::panicking::rust_panic_with_hook::h9f77e00b577fb66f
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:801:13
[INFO] [stderr]     11:     0x5ff3a1b2ba3a - std::panicking::begin_panic_handler::{{closure}}::h05dd299f621afec5
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:674:13
[INFO] [stderr]     12:     0x5ff3a1b2aa49 - std::sys::backtrace::__rust_end_short_backtrace::h1ac5e80eb199b5e7
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/sys/backtrace.rs:170:18
[INFO] [stderr]     13:     0x5ff3a1b2b6cc - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:665:5
[INFO] [stderr]     14:     0x5ff3a1b4ca60 - core::panicking::panic_fmt::hdb7e6f3ae56c06a6
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/panicking.rs:76:14
[INFO] [stderr]     15:     0x5ff3a1ac2223 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::he40df6acefb8f46a
[INFO] [stderr]     16:     0x5ff3a1abfbe3 - core::option::Option<T>::unwrap_or_else::h3dd762ec9f226e29
[INFO] [stderr]     17:     0x5ff3a1ac218c - build_script_build::cmd_finder::CommandFinder::must_have::h9b86e7c564d11c61
[INFO] [stderr]     18:     0x5ff3a1ac45f7 - build_script_build::main::hc021846e359b4767
[INFO] [stderr]     19:     0x5ff3a1abf4a3 - core::ops::function::FnOnce::call_once::h77ecf9ebadc19b8d
[INFO] [stderr]     20:     0x5ff3a1abed76 - std::sys::backtrace::__rust_begin_short_backtrace::ha799a6c7c2878451
[INFO] [stderr]     21:     0x5ff3a1abecd9 - std::rt::lang_start::{{closure}}::hfb452bb2f635ced9
[INFO] [stderr]     22:     0x5ff3a1b232a7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h9b826323d0f6f52d
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x5ff3a1b232a7 - std::panicking::try::do_call::h11b8cb37e889e723
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:557:40
[INFO] [stderr]     24:     0x5ff3a1b232a7 - std::panicking::try::h8c0c35eed4b91402
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:520:19
[INFO] [stderr]     25:     0x5ff3a1b232a7 - std::panic::catch_unwind::hdd9725084aceebb7
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panic.rs:358:14
[INFO] [stderr]     26:     0x5ff3a1b232a7 - std::rt::lang_start_internal::{{closure}}::h70a2b8736f81fb2f
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/rt.rs:174:48
[INFO] [stderr]     27:     0x5ff3a1b232a7 - std::panicking::try::do_call::h9dbefce92b360333
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:557:40
[INFO] [stderr]     28:     0x5ff3a1b232a7 - std::panicking::try::h69f0829c3d3bd7a7
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panicking.rs:520:19
[INFO] [stderr]     29:     0x5ff3a1b232a7 - std::panic::catch_unwind::haf848aa83b38ef16
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/panic.rs:358:14
[INFO] [stderr]     30:     0x5ff3a1b232a7 - std::rt::lang_start_internal::ha915624e2796630d
[INFO] [stderr]                                  at /rustc/39cb3386ddc6c71657418be28dbb3987eea4aa4b/library/std/src/rt.rs:174:20
[INFO] [stderr]     31:     0x5ff3a1abecb7 - std::rt::lang_start::hb1e49e4d3c289043
[INFO] [stderr]     32:     0x5ff3a1ac4fa5 - main
[INFO] [stderr]     33:     0x748005e09d90 - <unknown>
[INFO] [stderr]     34:     0x748005e09e40 - __libc_start_main
[INFO] [stderr]     35:     0x5ff3a1abe565 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ba0804bce85a3e38ac49657dad7efc7044b68260c0baf5bcedd98588212d38cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba0804bce85a3e38ac49657dad7efc7044b68260c0baf5bcedd98588212d38cb", kill_on_drop: false }`
[INFO] [stdout] ba0804bce85a3e38ac49657dad7efc7044b68260c0baf5bcedd98588212d38cb
