[INFO] fetching crate avr-oxide 0.0.5...
[INFO] checking avr-oxide-0.0.5 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate avr-oxide 0.0.5 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate avr-oxide 0.0.5 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-57/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-57/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate avr-oxide 0.0.5
[INFO] finished tweaking crates.io crate avr-oxide 0.0.5
[INFO] tweaked toml for crates.io crate avr-oxide 0.0.5 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded core_io v0.1.20210325
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2def72eeedfbe4f36d304cad4c6e64df54880e733382a365738c6563f47eafd0
[INFO] running `Command { std: "docker" "start" "-a" "2def72eeedfbe4f36d304cad4c6e64df54880e733382a365738c6563f47eafd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2def72eeedfbe4f36d304cad4c6e64df54880e733382a365738c6563f47eafd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2def72eeedfbe4f36d304cad4c6e64df54880e733382a365738c6563f47eafd0", kill_on_drop: false }`
[INFO] [stdout] 2def72eeedfbe4f36d304cad4c6e64df54880e733382a365738c6563f47eafd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5543511b0a15d624198d181c0fa73d42663b6199c3901d9615d92b0c862f845f
[INFO] running `Command { std: "docker" "start" "-a" "5543511b0a15d624198d181c0fa73d42663b6199c3901d9615d92b0c862f845f", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling avr-oxide v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> build.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> build.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling core_io v0.1.20210325
[INFO] [stderr] error: failed to run custom build command for `core_io v0.1.20210325`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/core_io-3a7892097a6e282a/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Unknown compiler version, upgrade core_io?', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_io-0.1.20210325/build.rs:73:69
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5598d43ca3dc - std::backtrace_rs::backtrace::libunwind::trace::h51faa62df48810e4
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x5598d43ca3dc - std::backtrace_rs::backtrace::trace_unsynchronized::h91de4d8e16d607e4
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5598d43ca3dc - std::sys_common::backtrace::_print_fmt::h71b0935f97e4322c
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5598d43ca3dc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h9a78218788c14e18
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5598d43e81bc - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/core/src/fmt/mod.rs:1150:17
[INFO] [stderr]      5:     0x5598d43c7875 - std::io::Write::write_fmt::h1d5220480c7a2437
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/io/mod.rs:1667:15
[INFO] [stderr]      6:     0x5598d43cbad0 - std::sys_common::backtrace::_print::h4b77abc4d907ed0e
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5598d43cbad0 - std::sys_common::backtrace::print::hb170c60b542377ad
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5598d43cbad0 - std::panicking::default_hook::{{closure}}::h12bbda9af8901ee3
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:210:50
[INFO] [stderr]      9:     0x5598d43cb687 - std::panicking::default_hook::h8c6c66d3f3ba6768
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x5598d43cc184 - std::panicking::rust_panic_with_hook::h36f2fa0bb09f4069
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:624:17
[INFO] [stderr]     11:     0x5598d43cbc60 - std::panicking::begin_panic_handler::{{closure}}::h9c42b65a42d06a7a
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:521:13
[INFO] [stderr]     12:     0x5598d43ca8a4 - std::sys_common::backtrace::__rust_end_short_backtrace::hc791bddfe31e532c
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5598d43cbbc9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:517:5
[INFO] [stderr]     14:     0x5598d43911d1 - core::panicking::panic_fmt::hf9de31d4acbce4db
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/core/src/panicking.rs:101:14
[INFO] [stderr]     15:     0x5598d43910c3 - core::option::expect_failed::h954fc73c60f6b468
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/core/src/option.rs:1615:5
[INFO] [stderr]     16:     0x5598d439442e - core::option::Option<T>::expect::hef18efdfbdac5cc7
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/core/src/option.rs:698:21
[INFO] [stderr]     17:     0x5598d4396241 - build_script_build::main::h784846af195c2690
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_io-0.1.20210325/build.rs:73:4
[INFO] [stderr]     18:     0x5598d4397bab - core::ops::function::FnOnce::call_once::h11674883d214d524
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x5598d43986ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h70da24ebe6992db6
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x5598d4397a91 - std::rt::lang_start::{{closure}}::h8561b7683d15772b
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x5598d43cc68a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc590b210ed55e22f
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x5598d43cc68a - std::panicking::try::do_call::h5f0600b7a33ea1af
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:403:40
[INFO] [stderr]     23:     0x5598d43cc68a - std::panicking::try::he15826df0f376a33
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:367:19
[INFO] [stderr]     24:     0x5598d43cc68a - std::panic::catch_unwind::hd8af3a578b6b4c86
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panic.rs:129:14
[INFO] [stderr]     25:     0x5598d43cc68a - std::rt::lang_start_internal::{{closure}}::h301d1329324ae1f0
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x5598d43cc68a - std::panicking::try::do_call::h941e8fdb0bd03655
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:403:40
[INFO] [stderr]     27:     0x5598d43cc68a - std::panicking::try::ha20a77bf65530f63
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panicking.rs:367:19
[INFO] [stderr]     28:     0x5598d43cc68a - std::panic::catch_unwind::h33afc061cc69ef90
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/panic.rs:129:14
[INFO] [stderr]     29:     0x5598d43cc68a - std::rt::lang_start_internal::hc05c244593147106
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x5598d4397a60 - std::rt::lang_start::h5dab29eefbfb81ad
[INFO] [stderr]                                  at /rustc/58268ff091703ace98c3c2a8c5f2fb2c3aecace2/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x5598d4396dac - main
[INFO] [stderr]     32:     0x7fa37637f0b3 - __libc_start_main
[INFO] [stderr]     33:     0x5598d439192e - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "5543511b0a15d624198d181c0fa73d42663b6199c3901d9615d92b0c862f845f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5543511b0a15d624198d181c0fa73d42663b6199c3901d9615d92b0c862f845f", kill_on_drop: false }`
[INFO] [stdout] 5543511b0a15d624198d181c0fa73d42663b6199c3901d9615d92b0c862f845f
