[INFO] fetching crate browser-window-c 0.0.6...
[INFO] documenting browser-window-c-0.0.6 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate browser-window-c 0.0.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate browser-window-c 0.0.6 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate browser-window-c 0.0.6
[INFO] finished tweaking crates.io crate browser-window-c 0.0.6
[INFO] tweaked toml for crates.io crate browser-window-c 0.0.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af627e131702a35a850a829a3516ea488e2cfa63222fc481c60f9fa72a57d5cb
[INFO] running `Command { std: "docker" "start" "-a" "af627e131702a35a850a829a3516ea488e2cfa63222fc481c60f9fa72a57d5cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af627e131702a35a850a829a3516ea488e2cfa63222fc481c60f9fa72a57d5cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af627e131702a35a850a829a3516ea488e2cfa63222fc481c60f9fa72a57d5cb", kill_on_drop: false }`
[INFO] [stdout] af627e131702a35a850a829a3516ea488e2cfa63222fc481c60f9fa72a57d5cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8e2802617738c3e57519daeb91bd093ce57907683185960aa756ae5139cc8a8
[INFO] running `Command { std: "docker" "start" "-a" "f8e2802617738c3e57519daeb91bd093ce57907683185960aa756ae5139cc8a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling browser-window-c v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:28:22
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Err(e) => panic!( format!("Unable to read directory entry for dir {}: {}", path.as_os_str().to_str().unwrap(), e) ),
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Err(e) => panic!( "Unable to read directory entry for dir {}: {}", path.as_os_str().to_str().unwrap(), e ),
[INFO] [stdout]    |                              --                                                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to run custom build command for `browser-window-c v0.0.6 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/browser-window-c-6ed9e396c1bc3967/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=CEF_PATH
[INFO] [stderr]   cargo:rerun-if-changed=src/browser_window.h
[INFO] [stderr]   cargo:rerun-if-changed=src/bool.h
[INFO] [stderr]   cargo:rerun-if-changed=src/browser_window/cef.h
[INFO] [stderr]   cargo:rerun-if-changed=src/browser_window/impl.h
[INFO] [stderr]   cargo:rerun-if-changed=src/browser_window/common.c
[INFO] [stderr]   cargo:rerun-if-changed=src/browser_window/cef.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/lib.rs
[INFO] [stderr]   cargo:rerun-if-changed=src/window/cef.h
[INFO] [stderr]   cargo:rerun-if-changed=src/window/gtk.c
[INFO] [stderr]   cargo:rerun-if-changed=src/window/impl.h
[INFO] [stderr]   cargo:rerun-if-changed=src/window/win32.c
[INFO] [stderr]   cargo:rerun-if-changed=src/window/common.c
[INFO] [stderr]   cargo:rerun-if-changed=src/window/gtk.h
[INFO] [stderr]   cargo:rerun-if-changed=src/window/win32.h
[INFO] [stderr]   cargo:rerun-if-changed=src/window/cef.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/string.h
[INFO] [stderr]   cargo:rerun-if-changed=src/gl_surface/glx.c
[INFO] [stderr]   cargo:rerun-if-changed=src/gl_surface/impl.h
[INFO] [stderr]   cargo:rerun-if-changed=src/gl_surface/common.c
[INFO] [stderr]   cargo:rerun-if-changed=src/common.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application/cef_window.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/application/cef.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application/gtk.c
[INFO] [stderr]   cargo:rerun-if-changed=src/application/impl.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application/win32.c
[INFO] [stderr]   cargo:rerun-if-changed=src/application/common.c
[INFO] [stderr]   cargo:rerun-if-changed=src/application/gtk.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application/win32.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application/cef_window.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application/cef.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/assert.h
[INFO] [stderr]   cargo:rerun-if-changed=src/gl_surface.h
[INFO] [stderr]   cargo:rerun-if-changed=src/debug.h
[INFO] [stderr]   cargo:rerun-if-changed=src/err.h
[INFO] [stderr]   cargo:rerun-if-changed=src/win32.c
[INFO] [stderr]   cargo:rerun-if-changed=src/err.c
[INFO] [stderr]   cargo:rerun-if-changed=src/dummy_bindings.rs
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/client_handler.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/exception.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/bw_handle_map.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/v8_to_string.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/external_invocation_handler.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/util.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/app_handler.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/bw_handle_map.cpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/exception.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/client_handler.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/cef/util.hpp
[INFO] [stderr]   cargo:rerun-if-changed=src/win32.h
[INFO] [stderr]   cargo:rerun-if-changed=src/bindings.rs
[INFO] [stderr]   cargo:rerun-if-changed=src/win32/window.h
[INFO] [stderr]   cargo:rerun-if-changed=src/posix.h
[INFO] [stderr]   cargo:rerun-if-changed=src/window.h
[INFO] [stderr]   cargo:rerun-if-changed=src/application.h
[INFO] [stderr]   cargo:rerun-if-changed=src/string.c
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Environment variable CEF_PATH is not set! This is needed by Browser Window to find CEF's development files. See https://github.com/bamilab/browser-window/tree/master/docs/getting-started for more information.', build.rs:147:29
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5635f05cb7e0 - std::backtrace_rs::backtrace::libunwind::trace::h34055254b57d8e79
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x5635f05cb7e0 - std::backtrace_rs::backtrace::trace_unsynchronized::h8f1e3fbd9afff6ec
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5635f05cb7e0 - std::sys_common::backtrace::_print_fmt::h3a99a796b770c360
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5635f05cb7e0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h32d1f94a80615d18
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5635f05f127c - core::fmt::write::h306731c068f7162c
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/fmt/mod.rs:1110:17
[INFO] [stderr]      5:     0x5635f05c7ee5 - std::io::Write::write_fmt::hd2fa90334eee2a21
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/io/mod.rs:1588:15
[INFO] [stderr]      6:     0x5635f05cdafb - std::sys_common::backtrace::_print::h5abaa2601a852287
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5635f05cdafb - std::sys_common::backtrace::print::h8d81445442bb638f
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5635f05cdafb - std::panicking::default_hook::{{closure}}::hcfe804496a9fa747
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x5635f05cd5d1 - std::panicking::default_hook::hbea8e3ccf2ba8901
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x5635f05ce1c4 - std::panicking::rust_panic_with_hook::h7ee9e1a2d0f8975a
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x5635f008d633 - std::panicking::begin_panic::{{closure}}::hb81a6fe7585339b9
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:542:9
[INFO] [stderr]     12:     0x5635f00a9199 - std::sys_common::backtrace::__rust_end_short_backtrace::h1ebec22aa675cac3
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5635f008d569 - std::panicking::begin_panic::hb51a2004765c674e
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:541:12
[INFO] [stderr]     14:     0x5635f00290d5 - build_script_build::main::h1f41f3330aa1a618
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:147:8
[INFO] [stderr]     15:     0x5635f002ab9b - core::ops::function::FnOnce::call_once::h68a0fd15dfbc55e1
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     16:     0x5635f002ccce - std::sys_common::backtrace::__rust_begin_short_backtrace::h3c85a637f35bb2eb
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     17:     0x5635f002b2b1 - std::rt::lang_start::{{closure}}::hf3e1465aa1a89472
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/rt.rs:49:18
[INFO] [stderr]     18:     0x5635f05ce6c9 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2aabc384aab89b7b
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     19:     0x5635f05ce6c9 - std::panicking::try::do_call::hc5fcacb7a85fc7b1
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stderr]     20:     0x5635f05ce6c9 - std::panicking::try::hb5d9603af3abbe3a
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stderr]     21:     0x5635f05ce6c9 - std::panic::catch_unwind::h98fe6ac3925e64b4
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stderr]     22:     0x5635f05ce6c9 - std::rt::lang_start_internal::h22ac7383c516f93e
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/rt.rs:34:21
[INFO] [stderr]     23:     0x5635f002b290 - std::rt::lang_start::h9400ba4a54c36a35
[INFO] [stderr]                                  at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/rt.rs:48:5
[INFO] [stderr]     24:     0x5635f002a13c - main
[INFO] [stderr]     25:     0x7f2f5150b0b3 - __libc_start_main
[INFO] [stderr]     26:     0x5635f002712e - _start
[INFO] [stderr]     27:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "f8e2802617738c3e57519daeb91bd093ce57907683185960aa756ae5139cc8a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8e2802617738c3e57519daeb91bd093ce57907683185960aa756ae5139cc8a8", kill_on_drop: false }`
[INFO] [stdout] f8e2802617738c3e57519daeb91bd093ce57907683185960aa756ae5139cc8a8
