[INFO] fetching crate cyt4bf 0.0.1...
[INFO] checking cyt4bf-0.0.1 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate cyt4bf 0.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate cyt4bf 0.0.1
[INFO] finished tweaking crates.io crate cyt4bf 0.0.1
[INFO] tweaked toml for crates.io crate cyt4bf 0.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cyt4bf 0.0.1 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a426077f2c9b46b928ea276232486676b4dee2bea257ef8b8ca7b1ba094ee2f
[INFO] running `Command { std: "docker" "start" "-a" "1a426077f2c9b46b928ea276232486676b4dee2bea257ef8b8ca7b1ba094ee2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a426077f2c9b46b928ea276232486676b4dee2bea257ef8b8ca7b1ba094ee2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a426077f2c9b46b928ea276232486676b4dee2bea257ef8b8ca7b1ba094ee2f", kill_on_drop: false }`
[INFO] [stdout] 1a426077f2c9b46b928ea276232486676b4dee2bea257ef8b8ca7b1ba094ee2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b398fea0fa9affb4d3962d99fc762f0c599c9989ce4fdd2f36b42981c21bdab
[INFO] running `Command { std: "docker" "start" "-a" "8b398fea0fa9affb4d3962d99fc762f0c599c9989ce4fdd2f36b42981c21bdab", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cyt4bf_d v0.0.1
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking cortex-m v0.7.7
[INFO] [stderr] error: failed to run custom build command for `cyt4bf_d v0.0.1`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_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/debug/build/cyt4bf_d-20093b7bd63cad13/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (50) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cyt4bf_d-0.0.1/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:     0x574ef54227da - std[843dc0b1bda91b1f]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x574ef54227da - std[843dc0b1bda91b1f]::backtrace_rs::backtrace::trace_unsynchronized::<std[843dc0b1bda91b1f]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x574ef54227da - std[843dc0b1bda91b1f]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x574ef54227da - <<std[843dc0b1bda91b1f]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[dce7ba9de88d7a1a]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x574ef543326a - <core[dce7ba9de88d7a1a]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x574ef543326a - core[dce7ba9de88d7a1a]::fmt::write
[INFO] [stderr]      6:     0x574ef5426522 - std[843dc0b1bda91b1f]::io::default_write_fmt::<std[843dc0b1bda91b1f]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x574ef5426522 - <std[843dc0b1bda91b1f]::sys::stdio::unix::Stderr as std[843dc0b1bda91b1f]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x574ef540e0ef - <std[843dc0b1bda91b1f]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x574ef540e0ef - std[843dc0b1bda91b1f]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x574ef541eaa1 - std[843dc0b1bda91b1f]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x574ef541ec5b - std[843dc0b1bda91b1f]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x574ef540e1da - std[843dc0b1bda91b1f]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:691:13
[INFO] [stderr]     13:     0x574ef5403669 - std[843dc0b1bda91b1f]::sys::backtrace::__rust_end_short_backtrace::<std[843dc0b1bda91b1f]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x574ef540ea0d - __rustc[e785788a2a4cee43]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x574ef543395c - core[dce7ba9de88d7a1a]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x574ef53f73d6 - build_script_build[a4599248de8d3f83]::main
[INFO] [stderr]     17:     0x574ef53f83f3 - <fn() as core[dce7ba9de88d7a1a]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     18:     0x574ef53f69d6 - std[843dc0b1bda91b1f]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     19:     0x574ef53f6c89 - std[843dc0b1bda91b1f]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     20:     0x574ef541e144 - <&dyn core[dce7ba9de88d7a1a]::ops::function::Fn<(), Output = i32> + core[dce7ba9de88d7a1a]::panic::unwind_safe::RefUnwindSafe + core[dce7ba9de88d7a1a]::marker::Sync as core[dce7ba9de88d7a1a]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     21:     0x574ef541e144 - std[843dc0b1bda91b1f]::panicking::catch_unwind::do_call::<&dyn core[dce7ba9de88d7a1a]::ops::function::Fn<(), Output = i32> + core[dce7ba9de88d7a1a]::panic::unwind_safe::RefUnwindSafe + core[dce7ba9de88d7a1a]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:581:40
[INFO] [stderr]     22:     0x574ef541e144 - std[843dc0b1bda91b1f]::panicking::catch_unwind::<i32, &dyn core[dce7ba9de88d7a1a]::ops::function::Fn<(), Output = i32> + core[dce7ba9de88d7a1a]::panic::unwind_safe::RefUnwindSafe + core[dce7ba9de88d7a1a]::marker::Sync>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:544:19
[INFO] [stderr]     23:     0x574ef541e144 - std[843dc0b1bda91b1f]::panic::catch_unwind::<&dyn core[dce7ba9de88d7a1a]::ops::function::Fn<(), Output = i32> + core[dce7ba9de88d7a1a]::panic::unwind_safe::RefUnwindSafe + core[dce7ba9de88d7a1a]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panic.rs:359:14
[INFO] [stderr]     24:     0x574ef541e144 - std[843dc0b1bda91b1f]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/rt.rs:175:24
[INFO] [stderr]     25:     0x574ef541e144 - std[843dc0b1bda91b1f]::panicking::catch_unwind::do_call::<std[843dc0b1bda91b1f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:581:40
[INFO] [stderr]     26:     0x574ef541e144 - std[843dc0b1bda91b1f]::panicking::catch_unwind::<isize, std[843dc0b1bda91b1f]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panicking.rs:544:19
[INFO] [stderr]     27:     0x574ef541e144 - std[843dc0b1bda91b1f]::panic::catch_unwind::<std[843dc0b1bda91b1f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/panic.rs:359:14
[INFO] [stderr]     28:     0x574ef541e144 - std[843dc0b1bda91b1f]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/1463461488056994d1b84e8b752e7c11c7fae7aa/library/std/src/rt.rs:171:5
[INFO] [stderr]     29:     0x574ef53f6701 - std[843dc0b1bda91b1f]::rt::lang_start::<()>
[INFO] [stderr]     30:     0x574ef53f8905 - main
[INFO] [stderr]     31:     0x7dc1b60311ca - <unknown>
[INFO] [stderr]     32:     0x7dc1b603128b - __libc_start_main
[INFO] [stderr]     33:     0x574ef53f6315 - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8b398fea0fa9affb4d3962d99fc762f0c599c9989ce4fdd2f36b42981c21bdab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b398fea0fa9affb4d3962d99fc762f0c599c9989ce4fdd2f36b42981c21bdab", kill_on_drop: false }`
[INFO] [stdout] 8b398fea0fa9affb4d3962d99fc762f0c599c9989ce4fdd2f36b42981c21bdab