[INFO] cloning repository https://github.com/tuzz/learning-wgpu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tuzz/learning-wgpu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Flearning-wgpu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Flearning-wgpu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a98428c0258c10d52ab7a401dc40aa84187adba
[INFO] checking tuzz/learning-wgpu against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Flearning-wgpu" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tuzz/learning-wgpu
[INFO] finished tweaking git repo https://github.com/tuzz/learning-wgpu
[INFO] tweaked toml for git repo https://github.com/tuzz/learning-wgpu written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tuzz/learning-wgpu on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tuzz/learning-wgpu 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47e02300e576bb64f695bc0a8f39a6adf62916f295ffc0ef5831dc11fd62a33a
[INFO] running `Command { std: "docker" "start" "-a" "47e02300e576bb64f695bc0a8f39a6adf62916f295ffc0ef5831dc11fd62a33a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47e02300e576bb64f695bc0a8f39a6adf62916f295ffc0ef5831dc11fd62a33a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47e02300e576bb64f695bc0a8f39a6adf62916f295ffc0ef5831dc11fd62a33a", kill_on_drop: false }`
[INFO] [stdout] 47e02300e576bb64f695bc0a8f39a6adf62916f295ffc0ef5831dc11fd62a33a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 547e7ed717303b8ba1f51d2d9c39befb8e5a8e4bacc3bc066518d03a77bb9150
[INFO] running `Command { std: "docker" "start" "-a" "547e7ed717303b8ba1f51d2d9c39befb8e5a8e4bacc3bc066518d03a77bb9150", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking gfx-hal v0.5.3
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking dlib v0.4.2
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[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking approx v0.3.2
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[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking ash v0.31.0
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking calloop v0.4.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking gfx-backend-empty v0.5.2
[INFO] [stderr]     Checking gfx-memory v0.1.3
[INFO] [stderr]     Checking gfx-descriptor v0.1.0
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling shaderc-sys v0.6.2
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr] warning: shaderc-sys@0.6.2: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.2: System installed library not found.  Falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.2`
[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-3cd81833b23a18f8/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-0.6.2/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:     0x57c2ce52d6e2 - std::backtrace_rs::backtrace::libunwind::trace::h76ea176a64426f0f
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x57c2ce52d6e2 - std::backtrace_rs::backtrace::trace_unsynchronized::h0830675862e8e766
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x57c2ce52d6e2 - std::sys::backtrace::_print_fmt::hba1ccef63faaa048
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x57c2ce52d6e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hca516e2c7056a217
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x57c2ce54fff3 - core::fmt::rt::Argument::fmt::ha510764ac9e77b66
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x57c2ce54fff3 - core::fmt::write::h97a802838d45fe7e
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x57c2ce52a223 - std::io::default_write_fmt::hb63ad55b2aa53928
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x57c2ce52a223 - std::io::Write::write_fmt::h6b2df461464d9a05
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x57c2ce52d532 - std::sys::backtrace::BacktraceLock::print::h81c102a9ac0a1bc7
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x57c2ce52e923 - std::panicking::default_hook::{{closure}}::h9934714bf98b056d
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x57c2ce52e705 - std::panicking::default_hook::hb31a4fc725ffcf0a
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x57c2ce52f2f5 - std::panicking::rust_panic_with_hook::h8df5393cb811c708
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x57c2ce52f08a - std::panicking::begin_panic_handler::{{closure}}::h73dc0a59c2d3b9c7
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x57c2ce52dbe9 - std::sys::backtrace::__rust_end_short_backtrace::h9eb84a109f69f8ca
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x57c2ce52ed1d - __rustc[98c2592f34d7b78b]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x57c2ce54ef40 - core::panicking::panic_fmt::hb0df011123225e8b
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x57c2ce4c0888 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h04298aa2ed5117df
[INFO] [stderr]     17:     0x57c2ce4be195 - core::option::Option<T>::unwrap_or_else::h6631c0da73acbcfb
[INFO] [stderr]     18:     0x57c2ce4c080c - build_script_build::cmd_finder::CommandFinder::must_have::h82cf009bb42f247e
[INFO] [stderr]     19:     0x57c2ce4c3135 - build_script_build::main::hf5d84c5677fbb5dc
[INFO] [stderr]     20:     0x57c2ce4bd443 - core::ops::function::FnOnce::call_once::h04cef369d99a4569
[INFO] [stderr]     21:     0x57c2ce4bd166 - std::sys::backtrace::__rust_begin_short_backtrace::h2baef570e6c4930c
[INFO] [stderr]     22:     0x57c2ce4bd0e9 - std::rt::lang_start::{{closure}}::h25d3027fa0978059
[INFO] [stderr]     23:     0x57c2ce526210 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h0bcac900efc89129
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     24:     0x57c2ce526210 - std::panicking::catch_unwind::do_call::hfadc8e58bd88a07a
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x57c2ce526210 - std::panicking::catch_unwind::h44c20dc1edb63a1e
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x57c2ce526210 - std::panic::catch_unwind::hed574ee6107b8e15
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x57c2ce526210 - std::rt::lang_start_internal::{{closure}}::h7f49669407df0483
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x57c2ce526210 - std::panicking::catch_unwind::do_call::hdc3b107dc7611175
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:589:40
[INFO] [stderr]     29:     0x57c2ce526210 - std::panicking::catch_unwind::h50fbac1cdf73dd69
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panicking.rs:552:19
[INFO] [stderr]     30:     0x57c2ce526210 - std::panic::catch_unwind::h061b64ee85b76832
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x57c2ce526210 - std::rt::lang_start_internal::h935ec80c2dc417b9
[INFO] [stderr]                                  at /rustc/82310651b93a594a3fd69015e1562186a080d94c/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x57c2ce4bd0d1 - std::rt::lang_start::he1f263eeb9a58194
[INFO] [stderr]     33:     0x57c2ce4c3a15 - main
[INFO] [stderr]     34:     0x7bd3e43ad1ca - <unknown>
[INFO] [stderr]     35:     0x7bd3e43ad28b - __libc_start_main
[INFO] [stderr]     36:     0x57c2ce4bc8b5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "547e7ed717303b8ba1f51d2d9c39befb8e5a8e4bacc3bc066518d03a77bb9150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "547e7ed717303b8ba1f51d2d9c39befb8e5a8e4bacc3bc066518d03a77bb9150", kill_on_drop: false }`
[INFO] [stdout] 547e7ed717303b8ba1f51d2d9c39befb8e5a8e4bacc3bc066518d03a77bb9150
