[INFO] cloning repository https://github.com/thara/learn-wgpu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thara/learn-wgpu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthara%2Flearn-wgpu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthara%2Flearn-wgpu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26dc2e01a5cb72525d597fca341363bdc8ab0891
[INFO] testing thara/learn-wgpu against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthara%2Flearn-wgpu" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thara/learn-wgpu
[INFO] finished tweaking git repo https://github.com/thara/learn-wgpu
[INFO] tweaked toml for git repo https://github.com/thara/learn-wgpu written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thara/learn-wgpu on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thara/learn-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3161c5593c2e80649d9afb298c176c5eefaaf166649da9dd897fa647b6b6e429
[INFO] running `Command { std: "docker" "start" "-a" "3161c5593c2e80649d9afb298c176c5eefaaf166649da9dd897fa647b6b6e429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3161c5593c2e80649d9afb298c176c5eefaaf166649da9dd897fa647b6b6e429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3161c5593c2e80649d9afb298c176c5eefaaf166649da9dd897fa647b6b6e429", kill_on_drop: false }`
[INFO] [stdout] 3161c5593c2e80649d9afb298c176c5eefaaf166649da9dd897fa647b6b6e429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5ef2dfad0d69d12c094f614e3355627430954af866470669410c479917c0942
[INFO] running `Command { std: "docker" "start" "-a" "a5ef2dfad0d69d12c094f614e3355627430954af866470669410c479917c0942", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling spirv_headers v1.5.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling spirv_cross v0.23.1
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling shaderc-sys v0.7.1
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling khronos-egl v3.0.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr] warning: shaderc-sys@0.7.1: shaderc: searching for native shaderc libraries on system;  use '--features build-from-source' to force building from source code
[INFO] [stderr] warning: shaderc-sys@0.7.1: shaderc: cannot find native shaderc library on system; falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.7.1`
[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-1b3379e41a67ac13/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=shaderc: searching for native shaderc libraries on system;  use '--features build-from-source' to force building from source code
[INFO] [stderr]   cargo:warning=shaderc: cannot find native shaderc library on system; falling back to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (1184) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.7.1/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:     0x5a6fba56b52a - std[ec4e911328de40a6]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5a6fba56b52a - std[ec4e911328de40a6]::backtrace_rs::backtrace::trace_unsynchronized::<std[ec4e911328de40a6]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5a6fba56b52a - std[ec4e911328de40a6]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5a6fba56b52a - <<std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a96a4c5c53f902a3]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5a6fba57f85a - <core[a96a4c5c53f902a3]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5a6fba57f85a - core[a96a4c5c53f902a3]::fmt::write
[INFO] [stderr]      6:     0x5a6fba571632 - std[ec4e911328de40a6]::io::default_write_fmt::<std[ec4e911328de40a6]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5a6fba571632 - <std[ec4e911328de40a6]::sys::stdio::unix::Stderr as std[ec4e911328de40a6]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x5a6fba54c53f - <std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5a6fba54c53f - std[ec4e911328de40a6]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5a6fba565c71 - std[ec4e911328de40a6]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5a6fba565e2b - std[ec4e911328de40a6]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5a6fba54c5f8 - std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5a6fba543e89 - std[ec4e911328de40a6]::sys::backtrace::__rust_end_short_backtrace::<std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5a6fba54cf5d - __rustc[aa69f48705c57ca8]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5a6fba57ff8c - core[a96a4c5c53f902a3]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5a6fba4e5f16 - <build_script_build[4c6161e9b7c0aa81]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     17:     0x5a6fba4e4889 - <core[a96a4c5c53f902a3]::option::Option<std[ec4e911328de40a6]::path::PathBuf>>::unwrap_or_else::<<build_script_build[4c6161e9b7c0aa81]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     18:     0x5a6fba4e475c - <build_script_build[4c6161e9b7c0aa81]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     19:     0x5a6fba4e98bf - build_script_build[4c6161e9b7c0aa81]::main
[INFO] [stderr]     20:     0x5a6fba4eb733 - <fn() as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     21:     0x5a6fba4e5436 - std[ec4e911328de40a6]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     22:     0x5a6fba4e5f39 - std[ec4e911328de40a6]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     23:     0x5a6fba564d64 - <&dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x5a6fba564d64 - std[ec4e911328de40a6]::panicking::catch_unwind::do_call::<&dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:581:40
[INFO] [stderr]     25:     0x5a6fba564d64 - std[ec4e911328de40a6]::panicking::catch_unwind::<i32, &dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:544:19
[INFO] [stderr]     26:     0x5a6fba564d64 - std[ec4e911328de40a6]::panic::catch_unwind::<&dyn core[a96a4c5c53f902a3]::ops::function::Fn<(), Output = i32> + core[a96a4c5c53f902a3]::panic::unwind_safe::RefUnwindSafe + core[a96a4c5c53f902a3]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5a6fba564d64 - std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5a6fba564d64 - std[ec4e911328de40a6]::panicking::catch_unwind::do_call::<std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:581:40
[INFO] [stderr]     29:     0x5a6fba564d64 - std[ec4e911328de40a6]::panicking::catch_unwind::<isize, std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:544:19
[INFO] [stderr]     30:     0x5a6fba564d64 - std[ec4e911328de40a6]::panic::catch_unwind::<std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5a6fba564d64 - std[ec4e911328de40a6]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5a6fba4e5421 - std[ec4e911328de40a6]::rt::lang_start::<()>
[INFO] [stderr]     33:     0x5a6fba4eb8b5 - main
[INFO] [stderr]     34:     0x71efeac2a1ca - <unknown>
[INFO] [stderr]     35:     0x71efeac2a28b - __libc_start_main
[INFO] [stderr]     36:     0x5a6fba4e39a5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a5ef2dfad0d69d12c094f614e3355627430954af866470669410c479917c0942", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5ef2dfad0d69d12c094f614e3355627430954af866470669410c479917c0942", kill_on_drop: false }`
[INFO] [stdout] a5ef2dfad0d69d12c094f614e3355627430954af866470669410c479917c0942
