[INFO] fetching crate avr-libc 0.2.0...
[INFO] documenting avr-libc-0.2.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate avr-libc 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate avr-libc 0.2.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avr-libc 0.2.0
[INFO] finished tweaking crates.io crate avr-libc 0.2.0
[INFO] tweaked toml for crates.io crate avr-libc 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate avr-libc 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff2bd5a50546652dad50f80e3c0bd8c09487ee896f77244c78e4379d572a3e70
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ff2bd5a50546652dad50f80e3c0bd8c09487ee896f77244c78e4379d572a3e70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff2bd5a50546652dad50f80e3c0bd8c09487ee896f77244c78e4379d572a3e70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff2bd5a50546652dad50f80e3c0bd8c09487ee896f77244c78e4379d572a3e70", kill_on_drop: false }`
[INFO] [stdout] ff2bd5a50546652dad50f80e3c0bd8c09487ee896f77244c78e4379d572a3e70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 855d826c274bafc06d2072b98084a3140b5d5e1355ed7b5c0b9c2aa986b7a921
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "855d826c274bafc06d2072b98084a3140b5d5e1355ed7b5c0b9c2aa986b7a921", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling bindgen v0.54.1
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling xmltree v0.10.1
[INFO] [stderr]    Compiling target-cpu-fetch v0.1.1
[INFO] [stderr]    Compiling avr-mcu v0.3.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling avr-libc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `avr-libc v0.2.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/avr-libc-af78cf67610ed41b/build-script-build` (exit code: 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 'no microcontroller with the name 'x86_64-unknown-linux-gnu' found', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.3/src/load.rs:54:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55a5ed684ca5 - backtrace::backtrace::libunwind::trace::h14d338b30b3ea0a7
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x55a5ed684ca5 - backtrace::backtrace::trace_unsynchronized::h73ea91d74a3fd67f
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55a5ed684ca5 - std::sys_common::backtrace::_print_fmt::hd42948c952866e12
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x55a5ed684ca5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha8f928866ff7571e
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x55a5ed6af41c - core::fmt::write::he0c1e5f7426d2718
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x55a5ed680f62 - std::io::Write::write_fmt::hf3afc6cfd57d0033
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1537
[INFO] [stderr]      6:     0x55a5ed6873b0 - std::sys_common::backtrace::_print::hfc0110703f3696fd
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x55a5ed6873b0 - std::sys_common::backtrace::print::h3f77c6990ddfaa22
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x55a5ed6873b0 - std::panicking::default_hook::{{closure}}::heae49580a8d62d75
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x55a5ed6870fc - std::panicking::default_hook::hecc34e3f729e213c
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x55a5ed6879f3 - std::panicking::rust_panic_with_hook::he82f5d0644692441
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x55a5ed6875eb - rust_begin_unwind
[INFO] [stderr]                                  at src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x55a5ed6adad1 - core::panicking::panic_fmt::h09c929f06bb87c98
[INFO] [stderr]                                  at src/libcore/panicking.rs:85
[INFO] [stderr]     13:     0x55a5ed6ad863 - core::option::expect_failed::hb49e05615ae76cc6
[INFO] [stderr]                                  at src/libcore/option.rs:1261
[INFO] [stderr]     14:     0x55a5ed0c72ce - core::option::Option<T>::expect::hc7bcc12acd9b2cc3
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libcore/option.rs:344
[INFO] [stderr]     15:     0x55a5ed0ade42 - avr_mcu::load::microcontroller::h75e87ad779a2fd40
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.3/src/load.rs:50
[INFO] [stderr]     16:     0x55a5ed0aed0e - avr_mcu::current::mcu::{{closure}}::hbb196994a5ff3cc2
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.3/src/current.rs:13
[INFO] [stderr]     17:     0x55a5ed0c6dac - core::option::Option<T>::map::hb23d0e97787b8559
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libcore/option.rs:453
[INFO] [stderr]     18:     0x55a5ed0aecae - avr_mcu::current::mcu::h5ef41cf5ee723935
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.3/src/current.rs:13
[INFO] [stderr]     19:     0x55a5ed097b51 - <build_script_build::MCU as core::ops::deref::Deref>::deref::__static_ref_initialize::hfa21b0b568d190d3
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:31
[INFO] [stderr]     20:     0x55a5ed097b51 - core::ops::function::FnOnce::call_once::hacc2b9e7aeac9830
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libcore/ops/function.rs:233
[INFO] [stderr]     21:     0x55a5ed097934 - lazy_static::lazy::Lazy<T>::get::{{closure}}::hd6d04ac996472808
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:31
[INFO] [stderr]     22:     0x55a5ed099cf2 - std::sync::once::Once::call_once::{{closure}}::h91760d96d82f2618
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/sync/once.rs:264
[INFO] [stderr]     23:     0x55a5ed68469a - std::sync::once::Once::call_inner::h65ff97b0ed20a605
[INFO] [stderr]                                  at src/libstd/sync/once.rs:416
[INFO] [stderr]     24:     0x55a5ed099c71 - std::sync::once::Once::call_once::h39fab0ee493f2494
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/sync/once.rs:264
[INFO] [stderr]     25:     0x55a5ed096a37 - lazy_static::lazy::Lazy<T>::get::hd41cc4d04596474f
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:30
[INFO] [stderr]     26:     0x55a5ed096a37 - <build_script_build::MCU as core::ops::deref::Deref>::deref::__stability::h82511ea07953adec
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:142
[INFO] [stderr]     27:     0x55a5ed096a37 - <build_script_build::MCU as core::ops::deref::Deref>::deref::h344bd82d0904d5d4
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:144
[INFO] [stderr]     28:     0x55a5ed0942e6 - build_script_build::main::h9d71349467d2c673
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:42
[INFO] [stderr]     29:     0x55a5ed0979db - std::rt::lang_start::{{closure}}::h5b51e7c9a94aec9d
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     30:     0x55a5ed687dc3 - std::rt::lang_start_internal::{{closure}}::h5d3ea623498f5f43
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     31:     0x55a5ed687dc3 - std::panicking::try::do_call::hac65e71be769a440
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     32:     0x55a5ed687dc3 - std::panicking::try::hd4706e264bcf6712
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     33:     0x55a5ed687dc3 - std::panic::catch_unwind::h948a0fb4a8b3ee82
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     34:     0x55a5ed687dc3 - std::rt::lang_start_internal::h72cc068ed2d0ac53
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     35:     0x55a5ed0979b7 - std::rt::lang_start::hd9553853f9fd3c2a
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     36:     0x55a5ed096aca - main
[INFO] [stderr]     37:     0x7fe0fc3df0b3 - __libc_start_main
[INFO] [stderr]     38:     0x55a5ed0941ae - _start
[INFO] [stderr]     39:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "855d826c274bafc06d2072b98084a3140b5d5e1355ed7b5c0b9c2aa986b7a921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855d826c274bafc06d2072b98084a3140b5d5e1355ed7b5c0b9c2aa986b7a921", kill_on_drop: false }`
[INFO] [stdout] 855d826c274bafc06d2072b98084a3140b5d5e1355ed7b5c0b9c2aa986b7a921