[INFO] fetching crate avr-libc 0.2.1...
[INFO] checking avr-libc-0.2.1 against beta for pr-78714
[INFO] extracting crate avr-libc 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate avr-libc 0.2.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-7/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" "+beta" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 399047a7d101d666e569714add90079380957799b7767df41c83ffdb75074e69
[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" "399047a7d101d666e569714add90079380957799b7767df41c83ffdb75074e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "399047a7d101d666e569714add90079380957799b7767df41c83ffdb75074e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399047a7d101d666e569714add90079380957799b7767df41c83ffdb75074e69", kill_on_drop: false }`
[INFO] [stdout] 399047a7d101d666e569714add90079380957799b7767df41c83ffdb75074e69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6418281ad8ab349f2bf7c2fe33a28b18dbe0cd92e9d6be8dcbd26fc696e45c65
[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" "6418281ad8ab349f2bf7c2fe33a28b18dbe0cd92e9d6be8dcbd26fc696e45c65", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling clang-sys v1.0.0
[INFO] [stderr]    Compiling xmltree v0.10.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling target-cpu-fetch v0.1.1
[INFO] [stderr]    Compiling avr-mcu v0.3.4
[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-d91243793469e58a/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:     0x557afeadaac0 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x557afeadaac0 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x557afeadaac0 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x557afeadaac0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x557afeaffdec - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]      5:     0x557afead6be2 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/io/mod.rs:1516
[INFO] [stderr]      6:     0x557afeadcfad - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x557afeadcfad - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x557afeadcfad - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:208
[INFO] [stderr]      9:     0x557afeadcc58 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:227
[INFO] [stderr]     10:     0x557afeadd691 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:577
[INFO] [stderr]     11:     0x557afeadd239 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:484
[INFO] [stderr]     12:     0x557afeadaf4c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x557afeadd1f9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:483
[INFO] [stderr]     14:     0x557afeafe3e1 - core::panicking::panic_fmt::h5b17d4a0e853d0f5
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/panicking.rs:85
[INFO] [stderr]     15:     0x557afeafe173 - core::option::expect_failed::ha4390247d473d6e0
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/option.rs:1226
[INFO] [stderr]     16:     0x557afe4cf9be - core::option::Option<T>::expect::hfdb41fe84ca1c558
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/option.rs:346
[INFO] [stderr]     17:     0x557afe4d5c25 - avr_mcu::load::microcontroller::had8587499e08db3b
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.4/src/load.rs:50
[INFO] [stderr]     18:     0x557afe4e54ce - avr_mcu::current::mcu::{{closure}}::h99242a73e27b48b1
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.4/src/current.rs:13
[INFO] [stderr]     19:     0x557afe4cf6ac - core::option::Option<T>::map::hf830bb4102c2a7d6
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/option.rs:450
[INFO] [stderr]     20:     0x557afe4e546f - avr_mcu::current::mcu::hbb84e7d45336a9ac
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/avr-mcu-0.3.4/src/current.rs:13
[INFO] [stderr]     21:     0x557afe4ad931 - <build_script_build::MCU as core::ops::deref::Deref>::deref::__static_ref_initialize::h7ebfec3b7a777f2b
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:31
[INFO] [stderr]     22:     0x557afe4ad931 - core::ops::function::FnOnce::call_once::hc8059e037b73d056
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/ops/function.rs:227
[INFO] [stderr]     23:     0x557afe4ade24 - lazy_static::lazy::Lazy<T>::get::{{closure}}::ha550ffb6cc0bbb57
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:31
[INFO] [stderr]     24:     0x557afe4afe5c - std::sync::once::Once::call_once::{{closure}}::hd223d161021fce51
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sync/once.rs:261
[INFO] [stderr]     25:     0x557afeada572 - std::sync::once::Once::call_inner::h33bd609ddf05a465
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sync/once.rs:419
[INFO] [stderr]     26:     0x557afe4afde1 - std::sync::once::Once::call_once::hc6ad42c929cbbcc2
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sync/once.rs:261
[INFO] [stderr]     27:     0x557afe4ac8b7 - lazy_static::lazy::Lazy<T>::get::h75ac8376106e7649
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:30
[INFO] [stderr]     28:     0x557afe4ac8b7 - <build_script_build::MCU as core::ops::deref::Deref>::deref::__stability::h69e925778ab11ead
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:142
[INFO] [stderr]     29:     0x557afe4ac8b7 - <build_script_build::MCU as core::ops::deref::Deref>::deref::hc859446cd4d34557
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:144
[INFO] [stderr]     30:     0x557afe4aa1f6 - build_script_build::main::h7ce08a3244a47ec3
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:42
[INFO] [stderr]     31:     0x557afe4ad89b - core::ops::function::FnOnce::call_once::h0edcd3044c8fab1f
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/ops/function.rs:227
[INFO] [stderr]     32:     0x557afe4ade6e - std::sys_common::backtrace::__rust_begin_short_backtrace::h47431f698bfc7de1
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     33:     0x557afe4ad321 - std::rt::lang_start::{{closure}}::h532d94bc3a10d64e
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/rt.rs:66
[INFO] [stderr]     34:     0x557afeaddab7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h908982dfc31b926f
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/core/src/ops/function.rs:259
[INFO] [stderr]     35:     0x557afeaddab7 - std::panicking::try::do_call::h92777899503b7584
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:381
[INFO] [stderr]     36:     0x557afeaddab7 - std::panicking::try::h8815656b2b76e792
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panicking.rs:345
[INFO] [stderr]     37:     0x557afeaddab7 - std::panic::catch_unwind::h112ab81228f50b46
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/panic.rs:382
[INFO] [stderr]     38:     0x557afeaddab7 - std::rt::lang_start_internal::h1772a706c7575c24
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/rt.rs:51
[INFO] [stderr]     39:     0x557afe4ad2f7 - std::rt::lang_start::hdeec303555b3361f
[INFO] [stderr]                                  at /rustc/1219014599fd873fcb640b675d8a662150c74e40/library/std/src/rt.rs:65
[INFO] [stderr]     40:     0x557afe4ac94a - main
[INFO] [stderr]     41:     0x7febc23310b3 - __libc_start_main
[INFO] [stderr]     42:     0x557afe4aa0be - _start
[INFO] [stderr]     43:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "6418281ad8ab349f2bf7c2fe33a28b18dbe0cd92e9d6be8dcbd26fc696e45c65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6418281ad8ab349f2bf7c2fe33a28b18dbe0cd92e9d6be8dcbd26fc696e45c65", kill_on_drop: false }`
[INFO] [stdout] 6418281ad8ab349f2bf7c2fe33a28b18dbe0cd92e9d6be8dcbd26fc696e45c65