[INFO] fetching crate cyt3bb_b 0.0.1...
[INFO] testing cyt3bb_b-0.0.1 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate cyt3bb_b 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate cyt3bb_b 0.0.1
[INFO] finished tweaking crates.io crate cyt3bb_b 0.0.1
[INFO] tweaked toml for crates.io crate cyt3bb_b 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cyt3bb_b 0.0.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff
[INFO] running `Command { std: "docker" "start" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling cortex-m v0.7.9
[INFO] [stderr]    Compiling cortex-m-macros v0.7.8
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling cyt3bb_b v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr] error: failed to run custom build command for `cyt3bb_b v0.0.1 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_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/release/build/cyt3bb_b/6f037d53ea1f59ad/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (212) panicked at build.rs:20:13:
[INFO] [stderr]   Only thumbv7em-none-eabihf and thumbv6m-none-eabi target triple are supported
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x612560e07b11 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x612560e183ca - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x612560e0b12c - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x612560df1786 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x612560e04181 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x612560e0433b - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x612560df1864 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x612560dea909 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x612560df1ffd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x612560e18afc - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x612560ddff74 - build_script_build[2d0d351ee6ab3c56]::main
[INFO] [stderr]     11:     0x612560de0613 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     12:     0x612560ddf62e - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     13:     0x612560ddf859 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     14:     0x612560e03928 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     15:     0x612560ddf4c1 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     16:     0x612560de07a5 - main
[INFO] [stderr]     17:     0x74f3aee7a601 - <unknown>
[INFO] [stderr]     18:     0x74f3aee7a718 - __libc_start_main
[INFO] [stderr]     19:     0x612560ddf225 - _start
[INFO] [stderr]     20:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff", kill_on_drop: false }`
[INFO] [stdout] eec210dc7eef26da9c6571d0cbbf45c1d98108b6025055383431d4d8a8a993ff
