[INFO] fetching crate imgui-vulkano-renderer-unsafe 0.6.1...
[INFO] testing imgui-vulkano-renderer-unsafe-0.6.1 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate imgui-vulkano-renderer-unsafe 0.6.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate imgui-vulkano-renderer-unsafe 0.6.1
[INFO] finished tweaking crates.io crate imgui-vulkano-renderer-unsafe 0.6.1
[INFO] tweaked toml for crates.io crate imgui-vulkano-renderer-unsafe 0.6.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate imgui-vulkano-renderer-unsafe 0.6.1 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 crates.io crate imgui-vulkano-renderer-unsafe 0.6.1 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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e743a2007a8c65a624134f993434b2198f3ee1966044b544dbbfe8e8d5529630
[INFO] running `Command { std: "docker" "start" "-a" "e743a2007a8c65a624134f993434b2198f3ee1966044b544dbbfe8e8d5529630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e743a2007a8c65a624134f993434b2198f3ee1966044b544dbbfe8e8d5529630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e743a2007a8c65a624134f993434b2198f3ee1966044b544dbbfe8e8d5529630", kill_on_drop: false }`
[INFO] [stdout] e743a2007a8c65a624134f993434b2198f3ee1966044b544dbbfe8e8d5529630
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3ca0ec8afc7286fd2465a6327e8ad36a3ebf3ac42beaab37b874e960a5ff4dd3
[INFO] running `Command { std: "docker" "start" "-a" "3ca0ec8afc7286fd2465a6327e8ad36a3ebf3ac42beaab37b874e960a5ff4dd3", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling smallvec v1.6.0
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling vulkano v0.20.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling chlorine v1.0.7
[INFO] [stderr]    Compiling vk-sys v0.5.3
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling imgui-sys v0.7.0
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr] warning: shaderc-sys@0.6.3: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.3: System installed library not found.  Falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.3`
[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-bb68caaba9b9e8a1/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' (599) 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:     0x5f7187deffea - 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:     0x5f7187deffea - 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:     0x5f7187deffea - std[ec4e911328de40a6]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5f7187deffea - <<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:     0x5f7187e0431a - <core[a96a4c5c53f902a3]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5f7187e0431a - core[a96a4c5c53f902a3]::fmt::write
[INFO] [stderr]      6:     0x5f7187df60f2 - 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:     0x5f7187df60f2 - <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:     0x5f7187dd0fff - <std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5f7187dd0fff - std[ec4e911328de40a6]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5f7187dea731 - std[ec4e911328de40a6]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5f7187dea8eb - std[ec4e911328de40a6]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5f7187dd10b8 - std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5f7187dc8949 - 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:     0x5f7187dd1a1d - __rustc[aa69f48705c57ca8]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5f7187e04a4c - core[a96a4c5c53f902a3]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5f7187d6b416 - <build_script_build[23f845c57f069393]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     17:     0x5f7187d69d99 - <core[a96a4c5c53f902a3]::option::Option<std[ec4e911328de40a6]::path::PathBuf>>::unwrap_or_else::<<build_script_build[23f845c57f069393]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     18:     0x5f7187d69c6c - <build_script_build[23f845c57f069393]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     19:     0x5f7187d6ec5a - build_script_build[23f845c57f069393]::main
[INFO] [stderr]     20:     0x5f7187d71093 - <fn() as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     21:     0x5f7187d6a936 - std[ec4e911328de40a6]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     22:     0x5f7187d6b439 - std[ec4e911328de40a6]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     23:     0x5f7187de9824 - <&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:     0x5f7187de9824 - 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:     0x5f7187de9824 - 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:     0x5f7187de9824 - 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:     0x5f7187de9824 - std[ec4e911328de40a6]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5f7187de9824 - 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:     0x5f7187de9824 - 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:     0x5f7187de9824 - 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:     0x5f7187de9824 - std[ec4e911328de40a6]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5f7187d6a921 - std[ec4e911328de40a6]::rt::lang_start::<()>
[INFO] [stderr]     33:     0x5f7187d71215 - main
[INFO] [stderr]     34:     0x7eab295551ca - <unknown>
[INFO] [stderr]     35:     0x7eab2955528b - __libc_start_main
[INFO] [stderr]     36:     0x5f7187d68eb5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3ca0ec8afc7286fd2465a6327e8ad36a3ebf3ac42beaab37b874e960a5ff4dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ca0ec8afc7286fd2465a6327e8ad36a3ebf3ac42beaab37b874e960a5ff4dd3", kill_on_drop: false }`
[INFO] [stdout] 3ca0ec8afc7286fd2465a6327e8ad36a3ebf3ac42beaab37b874e960a5ff4dd3
