[INFO] fetching crate accord 0.2.2...
[INFO] checking accord-0.2.2 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate accord 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate accord 0.2.2 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate accord 0.2.2
[INFO] finished tweaking crates.io crate accord 0.2.2
[INFO] tweaked toml for crates.io crate accord 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] [stderr]       Adding serde v0.8.23 (available: v1.0.215)
[INFO] [stderr]       Adding serde_codegen v0.8.14 (available: v0.8.23)
[INFO] [stderr]       Adding serde_json v0.8.6 (available: v1.0.133)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded serde_codegen v0.8.14
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded syntex_pos v0.45.0
[INFO] [stderr]   Downloaded serde_codegen_internals v0.10.0
[INFO] [stderr]   Downloaded syntex v0.45.1
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded log v0.3.9
[INFO] [stderr]   Downloaded syntex_errors v0.45.0
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded syn v0.9.2
[INFO] [stderr]   Downloaded syntex_syntax v0.45.1
[INFO] [stderr]   Downloaded term v0.4.6
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 514e837bfa2acb2a95fb1125eb23ea5ef9bc36dd25737f8f47539653eb60289a
[INFO] running `Command { std: "docker" "start" "-a" "514e837bfa2acb2a95fb1125eb23ea5ef9bc36dd25737f8f47539653eb60289a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "514e837bfa2acb2a95fb1125eb23ea5ef9bc36dd25737f8f47539653eb60289a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "514e837bfa2acb2a95fb1125eb23ea5ef9bc36dd25737f8f47539653eb60289a", kill_on_drop: false }`
[INFO] [stdout] 514e837bfa2acb2a95fb1125eb23ea5ef9bc36dd25737f8f47539653eb60289a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b777eb0cb9f7267ea1556e3109d1d981183a3b7c782fbd14632701b02fe431be
[INFO] running `Command { std: "docker" "start" "-a" "b777eb0cb9f7267ea1556e3109d1d981183a3b7c782fbd14632701b02fe431be", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling syn v0.9.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_codegen_internals v0.10.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]    Compiling syntex_pos v0.45.0
[INFO] [stderr]    Compiling syntex_errors v0.45.0
[INFO] [stderr]    Compiling syntex_syntax v0.45.1
[INFO] [stderr]    Compiling syntex v0.45.1
[INFO] [stderr]    Compiling serde_codegen v0.8.14
[INFO] [stderr]    Compiling accord v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `accord v0.2.2 (/opt/rustwide/workdir)`
[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/accord-335f2f1dc313a9a7/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at core/src/panicking.rs:223:5:
[INFO] [stderr]   unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5d68503c8cba - std::backtrace_rs::backtrace::libunwind::trace::h4a182ed5026c4960
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x5d68503c8cba - std::backtrace_rs::backtrace::trace_unsynchronized::hd36eaf0d0af663ac
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5d68503c8cba - std::sys::backtrace::_print_fmt::h5bc686de8bf76aa3
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5d68503c8cba - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd8bd9250b5d34cf2
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5d68503e7e53 - core::fmt::rt::Argument::fmt::h479db8f948910918
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/fmt/rt.rs:177:76
[INFO] [stderr]      5:     0x5d68503e7e53 - core::fmt::write::h8ea7001525e04e92
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/fmt/mod.rs:1189:21
[INFO] [stderr]      6:     0x5d68503c5ef3 - std::io::Write::write_fmt::h9a3a3a90a20c720b
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/io/mod.rs:1884:15
[INFO] [stderr]      7:     0x5d68503c8b02 - std::sys::backtrace::BacktraceLock::print::h524f4afae71bff25
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x5d68503c9acc - std::panicking::default_hook::{{closure}}::hbf0efdb45c0ec2fa
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:268:22
[INFO] [stderr]      9:     0x5d68503c9912 - std::panicking::default_hook::hd8655fd75a36fb4e
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:295:9
[INFO] [stderr]     10:     0x5d68503ca107 - std::panicking::rust_panic_with_hook::hfd3e39fd18e5a522
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:801:13
[INFO] [stderr]     11:     0x5d68503c9f66 - std::panicking::begin_panic_handler::{{closure}}::h541106c2fc98c78e
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:667:13
[INFO] [stderr]     12:     0x5d68503c9199 - std::sys::backtrace::__rust_end_short_backtrace::hd41b812be983a407
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:170:18
[INFO] [stderr]     13:     0x5d68503c9c2c - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:665:5
[INFO] [stderr]     14:     0x5d68503e703d - core::panicking::panic_nounwind_fmt::runtime::h603a78faffa60500
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/panicking.rs:119:22
[INFO] [stderr]     15:     0x5d68503e703d - core::panicking::panic_nounwind_fmt::h10e990d0b43f11f6
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/intrinsics/mod.rs:3535:9
[INFO] [stderr]     16:     0x5d68503e70d2 - core::panicking::panic_nounwind::h77de2e8d15ec29ff
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/panicking.rs:223:5
[INFO] [stderr]     17:     0x5d6850221f7b - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::h58eda521be068686
[INFO] [stderr]     18:     0x5d6850221dc2 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::hb9a76de7bed86807
[INFO] [stderr]     19:     0x5d68502ab335 - core::slice::<impl [T]>::get_unchecked::h98f461db24a6612b
[INFO] [stderr]     20:     0x5d685011e205 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::h826355ca0be2620b
[INFO] [stderr]     21:     0x5d68501405bc - syntex_syntax::fold::fold_attrs::h5188b1f580d39be2
[INFO] [stderr]     22:     0x5d6850174ed6 - syntex_syntax::fold::noop_fold_item_simple::h692b267eb5b4e07a
[INFO] [stderr]     23:     0x5d68502b528f - syntex_syntax::fold::Folder::fold_item_simple::h2798972ee0fd7481
[INFO] [stderr]     24:     0x5d685017445f - syntex_syntax::fold::noop_fold_item::{{closure}}::h236aaa30a4072655
[INFO] [stderr]     25:     0x5d685022f888 - syntex_syntax::ptr::P<T>::map::hf7c557f61c1a1689
[INFO] [stderr]     26:     0x5d68501742db - syntex_syntax::fold::noop_fold_item::h9028891cd9173114
[INFO] [stderr]     27:     0x5d68502c9de2 - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::{{closure}}::h827c0a6c8edbe68c
[INFO] [stderr]     28:     0x5d68502ab224 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h2478e3c28a337315
[INFO] [stderr]     29:     0x5d68502e860c - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next::hac7e65a4d5ee4ab7
[INFO] [stderr]     30:     0x5d685028acec - core::ops::function::FnOnce::call_once::h1ee481b33c0fa1c1
[INFO] [stderr]     31:     0x5d6850299d2b - core::iter::adapters::fuse::and_then_or_clear::hfeb5f7be41e118dd
[INFO] [stderr]     32:     0x5d68502883ee - <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::h65d0698f51afee09
[INFO] [stderr]     33:     0x5d6850236b8e - <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::h1ce2b379f60a84eb
[INFO] [stderr]     34:     0x5d6850236857 - <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::hf799438771eb94b7
[INFO] [stderr]     35:     0x5d68502e17ff - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::Extend<T>>::extend::h5868b71e5ba51665
[INFO] [stderr]     36:     0x5d68502dfc7d - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h5f37edc7202df0d5
[INFO] [stderr]     37:     0x5d685023a1ae - core::iter::traits::iterator::Iterator::collect::hd32852f981c6ed45
[INFO] [stderr]     38:     0x5d68502c9d7c - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h5cd5fe0fc159a864
[INFO] [stderr]     39:     0x5d6850173a20 - syntex_syntax::fold::noop_fold_crate::hc466a9f09ac1f625
[INFO] [stderr]     40:     0x5d68502b518f - syntex_syntax::fold::Folder::fold_crate::hc0e4c9578364732c
[INFO] [stderr]     41:     0x5d68502c9cec - syntex_syntax::ext::decorator::expand_attributes::ha05fbc1d400f70db
[INFO] [stderr]     42:     0x5d68502f5653 - syntex_syntax::ext::expand::MacroExpander::expand_crate::hc9a1de6aa0f8d200
[INFO] [stderr]     43:     0x5d68500d920a - syntex::registry::Registry::expand_crate::h9a00ece34e1792bb
[INFO] [stderr]     44:     0x5d685006461f - syntex::registry::Registry::expand::h2bb0b16c98ddfbfc
[INFO] [stderr]     45:     0x5d685006122c - serde_codegen::expand::{{closure}}::hb92c92d69d5817a0
[INFO] [stderr]     46:     0x5d68500613d6 - std::sys::backtrace::__rust_begin_short_backtrace::h2e9d04bd02df53ea
[INFO] [stderr]     47:     0x5d68500628e9 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h195c476cd171feae
[INFO] [stderr]     48:     0x5d685006100a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab33e01de16f0973
[INFO] [stderr]     49:     0x5d6850062b04 - std::panicking::try::do_call::h4fe100eb35025968
[INFO] [stderr]     50:     0x5d685006504b - __rust_try
[INFO] [stderr]     51:     0x5d68500626a5 - std::thread::Builder::spawn_unchecked_::{{closure}}::hffda3d0e4d5f72db
[INFO] [stderr]     52:     0x5d6850063156 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h1eb4786ae6e43a82
[INFO] [stderr]     53:     0x5d68503cc3ab - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf6b288c668db4060
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/alloc/src/boxed.rs:1972:9
[INFO] [stderr]     54:     0x5d68503cc3ab - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h888174eb9887056b
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/alloc/src/boxed.rs:1972:9
[INFO] [stderr]     55:     0x5d68503cc3ab - std::sys::pal::unix::thread::Thread::new::thread_start::h72734f97cc47812f
[INFO] [stderr]                                  at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stderr]     56:     0x7a5efb181ac3 - <unknown>
[INFO] [stderr]     57:     0x7a5efb212a04 - clone
[INFO] [stderr]     58:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "b777eb0cb9f7267ea1556e3109d1d981183a3b7c782fbd14632701b02fe431be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b777eb0cb9f7267ea1556e3109d1d981183a3b7c782fbd14632701b02fe431be", kill_on_drop: false }`
[INFO] [stdout] b777eb0cb9f7267ea1556e3109d1d981183a3b7c782fbd14632701b02fe431be