[INFO] fetching crate avr-libc 0.2.1...
[INFO] checking avr-libc-0.2.1 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate avr-libc 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate avr-libc 0.2.1 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avr-libc 0.2.1
[INFO] finished tweaking crates.io crate avr-libc 0.2.1
[INFO] tweaked toml for crates.io crate avr-libc 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate avr-libc 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04fafd7655a259f5ece752de25c81861c83229beebd5fdc5fab9a0c6b56a2d2b
[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" "04fafd7655a259f5ece752de25c81861c83229beebd5fdc5fab9a0c6b56a2d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04fafd7655a259f5ece752de25c81861c83229beebd5fdc5fab9a0c6b56a2d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04fafd7655a259f5ece752de25c81861c83229beebd5fdc5fab9a0c6b56a2d2b", kill_on_drop: false }`
[INFO] [stdout] 04fafd7655a259f5ece752de25c81861c83229beebd5fdc5fab9a0c6b56a2d2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3d81b39a4cea97bfa4c8a6e6a55757774b4006efc7c9ed007c351666f8628ae
[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" "a3d81b39a4cea97bfa4c8a6e6a55757774b4006efc7c9ed007c351666f8628ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling target-cpu-fetch v0.1.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.0.0
[INFO] [stderr]    Compiling xmltree v0.10.1
[INFO] [stderr]    Compiling avr-mcu v0.3.4
[INFO] [stderr]    Compiling quote v1.0.7
[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 v1.3.9
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling avr-libc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `avr-libc v0.2.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/avr-libc-e0f1e31435ae76e3/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-0.3.4/src/load.rs:54:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55f1dae4c220 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
[INFO] [stderr]      1:     0x55f1dae4c220 - std::backtrace_rs::backtrace::trace_unsynchronized::h2d26397c5720fdbb
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55f1dae4c220 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55f1dae4c220 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55f1dae713dc - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]      5:     0x55f1dae48272 - std::io::Write::write_fmt::h16a9fe7680ac245c
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]      6:     0x55f1dae4ea25 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55f1dae4ea25 - std::sys_common::backtrace::print::h5f20e41c85e91716
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55f1dae4ea25 - std::panicking::default_hook::{{closure}}::h5b7294ca19e8edab
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55f1dae4e57a - std::panicking::default_hook::hb3948d1f74b6ff4c
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55f1dae4f1c1 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55f1dae4ed07 - std::panicking::begin_panic_handler::{{closure}}::h56ae74c6dea6e141
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55f1dae4c6bc - std::sys_common::backtrace::__rust_end_short_backtrace::h3c4721f56689fae4
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55f1dae4ec69 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55f1dae6fa61 - core::panicking::panic_fmt::hb15d6f55e8472f62
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55f1dae6f7f3 - core::option::expect_failed::h6bc6a05976f4cb88
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/option.rs:1260:5
[INFO] [stderr]     16:     0x55f1da86305e - core::option::Option<T>::expect::h048ebf558240644e
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/option.rs:349:21
[INFO] [stderr]     17:     0x55f1da866cf6 - avr_mcu::load::microcontroller::h1d821ea3f418788d
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.4/src/load.rs:50:21
[INFO] [stderr]     18:     0x55f1da867bf2 - avr_mcu::current::mcu::{{closure}}::h68f403db33c50eb2
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.4/src/current.rs:13:31
[INFO] [stderr]     19:     0x55f1da862755 - core::option::Option<T>::map::h8851392dbb7cfe20
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/option.rs:453:29
[INFO] [stderr]     20:     0x55f1da867b9f - avr_mcu::current::mcu::h15c41c9424a6ab0e
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.4/src/current.rs:13:5
[INFO] [stderr]     21:     0x55f1da8435a1 - <build_script_build::MCU as core::ops::deref::Deref>::deref::__static_ref_initialize::h40008e541b8b1335
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:31:35
[INFO] [stderr]     22:     0x55f1da8435a1 - core::ops::function::FnOnce::call_once::h440c8beed0c451df
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     23:     0x55f1da843cd4 - lazy_static::lazy::Lazy<T>::get::{{closure}}::hf07d1a02a7b1c500
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:31:29
[INFO] [stderr]     24:     0x55f1da84643c - std::sync::once::Once::call_once::{{closure}}::hc93354a8d58ac94d
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sync/once.rs:261:41
[INFO] [stderr]     25:     0x55f1dae4bcd2 - std::sync::once::Once::call_inner::hea4fc850fdffa55f
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sync/once.rs:419:21
[INFO] [stderr]     26:     0x55f1da8463b5 - std::sync::once::Once::call_once::h8cc620991eaafcd6
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sync/once.rs:261:9
[INFO] [stderr]     27:     0x55f1da8427f7 - lazy_static::lazy::Lazy<T>::get::h718215d8365fe9fe
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:30:9
[INFO] [stderr]     28:     0x55f1da8427f7 - <build_script_build::MCU as core::ops::deref::Deref>::deref::__stability::h963555aac0239761
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:142:21
[INFO] [stderr]     29:     0x55f1da8427f7 - <build_script_build::MCU as core::ops::deref::Deref>::deref::hbc847532d435d3cc
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:144:17
[INFO] [stderr]     30:     0x55f1da8401f6 - build_script_build::main::hbf5c37d3fbf33caf
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:42:8
[INFO] [stderr]     31:     0x55f1da8435bb - core::ops::function::FnOnce::call_once::h809fac3b3142710e
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     32:     0x55f1da843d1e - std::sys_common::backtrace::__rust_begin_short_backtrace::h40ff06ff776b511c
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     33:     0x55f1da8431d1 - std::rt::lang_start::{{closure}}::h232080777a96efcb
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/rt.rs:66:18
[INFO] [stderr]     34:     0x55f1dae4f5e7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3f3ba5d1e0ce8d49
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     35:     0x55f1dae4f5e7 - std::panicking::try::do_call::hd7a374fc87b951e7
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:379:40
[INFO] [stderr]     36:     0x55f1dae4f5e7 - std::panicking::try::h068087b173f80a49
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panicking.rs:343:19
[INFO] [stderr]     37:     0x55f1dae4f5e7 - std::panic::catch_unwind::h1f8259807e825279
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/panic.rs:396:14
[INFO] [stderr]     38:     0x55f1dae4f5e7 - std::rt::lang_start_internal::h8ff82302dd620b52
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/rt.rs:51:25
[INFO] [stderr]     39:     0x55f1da8431a7 - std::rt::lang_start::hf40b251e64d15565
[INFO] [stderr]                                  at /rustc/c919f490bbcd2b29b74016101f7ec71aaa24bdbb/library/std/src/rt.rs:65:5
[INFO] [stderr]     40:     0x55f1da84288a - main
[INFO] [stderr]     41:     0x7fc89c4450b3 - __libc_start_main
[INFO] [stderr]     42:     0x55f1da8400be - _start
[INFO] [stderr]     43:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "a3d81b39a4cea97bfa4c8a6e6a55757774b4006efc7c9ed007c351666f8628ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3d81b39a4cea97bfa4c8a6e6a55757774b4006efc7c9ed007c351666f8628ae", kill_on_drop: false }`
[INFO] [stdout] a3d81b39a4cea97bfa4c8a6e6a55757774b4006efc7c9ed007c351666f8628ae