[INFO] fetching crate avr-libc 0.2.2...
[INFO] documenting avr-libc-0.2.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate avr-libc 0.2.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate avr-libc 0.2.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avr-libc 0.2.2
[INFO] finished tweaking crates.io crate avr-libc 0.2.2
[INFO] tweaked toml for crates.io crate avr-libc 0.2.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate avr-libc 0.2.2 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread_local v1.1.3
[INFO] [stderr]   Downloaded which v3.1.1
[INFO] [stderr]   Downloaded nom v5.1.2
[INFO] [stderr]   Downloaded env_logger v0.8.3
[INFO] [stderr]   Downloaded xml-rs v0.8.3
[INFO] [stderr]   Downloaded libloading v0.6.7
[INFO] [stderr]   Downloaded bindgen v0.57.0
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded libc v0.2.86
[INFO] [stderr]   Downloaded once_cell v1.5.2
[INFO] [stderr]   Downloaded cexpr v0.4.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.18
[INFO] [stderr]   Downloaded xmltree v0.10.2
[INFO] [stderr]   Downloaded clang-sys v1.1.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c496b102459e9b12d33a96cb921f114c458300814bc135763bb654a27620de0
[INFO] running `Command { std: "docker" "start" "-a" "7c496b102459e9b12d33a96cb921f114c458300814bc135763bb654a27620de0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c496b102459e9b12d33a96cb921f114c458300814bc135763bb654a27620de0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c496b102459e9b12d33a96cb921f114c458300814bc135763bb654a27620de0", kill_on_drop: false }`
[INFO] [stdout] 7c496b102459e9b12d33a96cb921f114c458300814bc135763bb654a27620de0
[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=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97e4b5c4af9209eb4dc2911518349f7036c697e4e68b0dc1ffa0261ef844d822
[INFO] running `Command { std: "docker" "start" "-a" "97e4b5c4af9209eb4dc2911518349f7036c697e4e68b0dc1ffa0261ef844d822", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling clang-sys v1.1.0
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling target-cpu-fetch v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling xmltree v0.10.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling avr-mcu v0.3.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling avr-libc v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `avr-libc v0.2.2 (/opt/rustwide/workdir)`
[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/avr-libc-f747b464f707c47e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   [warning]: cannot find target JSON file 'x86_64-unknown-linux-gnu.json' - due to limitations it needs to be in the crate root - is it?
[INFO] [stderr]   [warning]: assuming a target CPU name of 'x86_64-unknown-linux-gnu' from the file name of the target spec JSON file
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/avr-mcu-0.3.5/src/load.rs:54:10:
[INFO] [stderr]   no microcontroller with the name 'x86_64-unknown-linux-gnu' found
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5596023832ac - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x5596023832ac - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5596023832ac - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5596023832ac - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x5596023aef80 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x5596023aef80 - core::fmt::write::h3a39390d8560d9c9
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x55960238089f - std::io::Write::write_fmt::h5fc9997dfe05f882
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
[INFO] [stderr]      7:     0x559602383094 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x559602383094 - std::sys_common::backtrace::print::h23a2d212c6fff936
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x5596023848a7 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
[INFO] [stderr]     10:     0x55960238460f - std::panicking::default_hook::h6038f2eba384e475
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x559602384d28 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x559602384c0e - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x559602383776 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stderr]     14:     0x559602384972 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x559601f3f985 - core::panicking::panic_fmt::hbf0e066aabfa482c
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x559601f3f943 - core::panicking::panic_display::h68e6012a1c287ca5
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:178:5
[INFO] [stderr]     17:     0x559601f3f943 - core::panicking::panic_str::h1ca8e3b0d2d70f80
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:152:5
[INFO] [stderr]     18:     0x559601f3f943 - core::option::expect_failed::h1ae4bac6b7606972
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/option.rs:1985:5
[INFO] [stderr]     19:     0x559601f51642 - core::option::Option<T>::expect::h35135791dccec4c6
[INFO] [stderr]     20:     0x559601f4f42f - avr_mcu::load::microcontroller::h40229c3d1c566617
[INFO] [stderr]     21:     0x559601f50041 - avr_mcu::current::mcu::{{closure}}::hafb1a4d65f21ab44
[INFO] [stderr]     22:     0x559601f51564 - core::option::Option<T>::map::he46f74ac6bbeaeb8
[INFO] [stderr]     23:     0x559601f4ffc7 - avr_mcu::current::mcu::h7e5663dd77fe9033
[INFO] [stderr]     24:     0x559601f417b2 - core::ops::function::FnOnce::call_once::he3e151c0653d9430
[INFO] [stderr]     25:     0x559601f40376 - lazy_static::lazy::Lazy<T>::get::{{closure}}::hf31825b277cff067
[INFO] [stderr]     26:     0x559601f41082 - std::sync::once::Once::call_once::{{closure}}::h3889567bd85f8c41
[INFO] [stderr]     27:     0x559601f405b2 - std::sys_common::once::futex::Once::call::h3b4c73923a6dbf45
[INFO] [stderr]     28:     0x559601f40feb - std::sync::once::Once::call_once::h28d1f1428f3bba60
[INFO] [stderr]     29:     0x559601f45337 - <build_script_build::MCU as core::ops::deref::Deref>::deref::hc585cbd3b0222f66
[INFO] [stderr]     30:     0x559601f43073 - build_script_build::main::h598caec2e8991082
[INFO] [stderr]     31:     0x559601f41773 - core::ops::function::FnOnce::call_once::hc060d375674ea50b
[INFO] [stderr]     32:     0x559601f406a6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd46295834a6082a1
[INFO] [stderr]     33:     0x559601f40d99 - std::rt::lang_start::{{closure}}::h725435bc0a7d3241
[INFO] [stderr]     34:     0x55960237c247 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd95060ecd5e1ca24
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     35:     0x55960237c247 - std::panicking::try::do_call::h6e8cf51db32a6e4b
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stderr]     36:     0x55960237c247 - std::panicking::try::h3a52eefe24fe3c29
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stderr]     37:     0x55960237c247 - std::panic::catch_unwind::h24c28c23c02c3841
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stderr]     38:     0x55960237c247 - std::rt::lang_start_internal::{{closure}}::h705d3c9cbc06ef47
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/rt.rs:148:48
[INFO] [stderr]     39:     0x55960237c247 - std::panicking::try::do_call::ha21f52ba13158470
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stderr]     40:     0x55960237c247 - std::panicking::try::h5581346bf6aeb1f8
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stderr]     41:     0x55960237c247 - std::panic::catch_unwind::h7919645a6b72e25b
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stderr]     42:     0x55960237c247 - std::rt::lang_start_internal::h12de51168669836e
[INFO] [stderr]                                  at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/rt.rs:148:20
[INFO] [stderr]     43:     0x559601f40d77 - std::rt::lang_start::ha6cbee773b6bca79
[INFO] [stderr]     44:     0x559601f45395 - main
[INFO] [stderr]     45:     0x7f85092abd90 - <unknown>
[INFO] [stderr]     46:     0x7f85092abe40 - __libc_start_main
[INFO] [stderr]     47:     0x559601f40255 - _start
[INFO] [stderr]     48:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "97e4b5c4af9209eb4dc2911518349f7036c697e4e68b0dc1ffa0261ef844d822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e4b5c4af9209eb4dc2911518349f7036c697e4e68b0dc1ffa0261ef844d822", kill_on_drop: false }`
[INFO] [stdout] 97e4b5c4af9209eb4dc2911518349f7036c697e4e68b0dc1ffa0261ef844d822
