[INFO] fetching crate accord 0.2.2...
[INFO] checking accord-0.2.2 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[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 b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 26 packages
[INFO] [stderr]       Adding bitflags v0.7.0 (latest: v2.5.0)
[INFO] [stderr]       Adding dtoa v0.2.2 (latest: v1.0.9)
[INFO] [stderr]       Adding itoa v0.1.1 (latest: v1.0.11)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding quote v0.3.15 (latest: v1.0.36)
[INFO] [stderr]       Adding serde v0.8.23 (latest: v1.0.197)
[INFO] [stderr]       Adding serde_codegen v0.8.14 (latest: v0.9.0)
[INFO] [stderr]       Adding serde_codegen_internals v0.10.0 (latest: v0.14.2)
[INFO] [stderr]       Adding serde_json v0.8.6 (latest: v1.0.115)
[INFO] [stderr]       Adding syn v0.9.2 (latest: v2.0.58)
[INFO] [stderr]       Adding syntex v0.45.1 (latest: v0.58.1)
[INFO] [stderr]       Adding syntex_errors v0.45.0 (latest: v0.59.1)
[INFO] [stderr]       Adding syntex_pos v0.45.0 (latest: v0.59.1)
[INFO] [stderr]       Adding syntex_syntax v0.45.1 (latest: v0.59.1)
[INFO] [stderr]       Adding term v0.4.6 (latest: v0.7.0)
[INFO] [stderr]       Adding unicode-xid v0.0.3 (latest: v0.2.4)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded log v0.3.9
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded term v0.4.6
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded syn v0.9.2
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded serde_codegen v0.8.14
[INFO] [stderr]   Downloaded syntex_pos v0.45.0
[INFO] [stderr]   Downloaded syntex_errors v0.45.0
[INFO] [stderr]   Downloaded syntex_syntax v0.45.1
[INFO] [stderr]   Downloaded serde_codegen_internals v0.10.0
[INFO] [stderr]   Downloaded syntex v0.45.1
[INFO] [stderr]   Downloaded itoa v0.1.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9cd6385dde678d56e2fd253148e196c4421c097f829ad178da2b5f1d6d40b3c
[INFO] running `Command { std: "docker" "start" "-a" "a9cd6385dde678d56e2fd253148e196c4421c097f829ad178da2b5f1d6d40b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9cd6385dde678d56e2fd253148e196c4421c097f829ad178da2b5f1d6d40b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9cd6385dde678d56e2fd253148e196c4421c097f829ad178da2b5f1d6d40b3c", kill_on_drop: false }`
[INFO] [stdout] a9cd6385dde678d56e2fd253148e196c4421c097f829ad178da2b5f1d6d40b3c
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4165e46bc34689f553e37a11119932ee311b5b430d145df8e8c3084c97b45b26
[INFO] running `Command { std: "docker" "start" "-a" "4165e46bc34689f553e37a11119932ee311b5b430d145df8e8c3084c97b45b26", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling syn v0.9.2
[INFO] [stderr]     Checking itoa v0.1.1
[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-afa88c839efd342c/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at library/core/src/panicking.rs:215:5:
[INFO] [stderr]   unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55cdf2ae2515 - std::backtrace_rs::backtrace::libunwind::trace::hc0846b9d5d734da3
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x55cdf2ae2515 - std::backtrace_rs::backtrace::trace_unsynchronized::haaeb5c07fc5f1c16
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55cdf2ae2515 - std::sys_common::backtrace::_print_fmt::hf422d8687c118c78
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55cdf2ae2515 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h826b8e7caae31c92
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55cdf2b0190b - core::fmt::rt::Argument::fmt::ha5794cc754ea58dc
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x55cdf2b0190b - core::fmt::write::h90bf88fced7d7a85
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/fmt/mod.rs:1153:17
[INFO] [stderr]      6:     0x55cdf2ae036f - std::io::Write::write_fmt::h0542e06a2975a65e
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/io/mod.rs:1850:15
[INFO] [stderr]      7:     0x55cdf2ae22ee - std::sys_common::backtrace::_print::h6c5d0ea7000c081f
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55cdf2ae22ee - std::sys_common::backtrace::print::h8cc61d3d9cfe4b43
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55cdf2ae3729 - std::panicking::default_hook::{{closure}}::ha840b187609a73dc
[INFO] [stderr]     10:     0x55cdf2ae3445 - std::panicking::default_hook::h64931701a8dfbeb5
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:291:9
[INFO] [stderr]     11:     0x55cdf2ae3bc4 - std::panicking::rust_panic_with_hook::h0fc054ea3f5b1656
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:788:13
[INFO] [stderr]     12:     0x55cdf2ae3a6d - std::panicking::begin_panic_handler::{{closure}}::hd39fcf318858b44e
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:649:13
[INFO] [stderr]     13:     0x55cdf2ae29d9 - std::sys_common::backtrace::__rust_end_short_backtrace::h41bac59379df1622
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55cdf2ae37d7 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x55cdf274b0c3 - core::panicking::panic_nounwind_fmt::runtime::h17be5627ded62aec
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/panicking.rs:110:18
[INFO] [stderr]     16:     0x55cdf274b0c3 - core::panicking::panic_nounwind_fmt::h8a2d3e247a16cafd
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/panicking.rs:120:5
[INFO] [stderr]     17:     0x55cdf274b155 - core::panicking::panic_nounwind::he15414b6ab578503
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/panicking.rs:215:5
[INFO] [stderr]     18:     0x55cdf291482b - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::hef03881cced55e4f
[INFO] [stderr]     19:     0x55cdf2914424 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h88b856d51d21450c
[INFO] [stderr]     20:     0x55cdf29f19f5 - core::slice::<impl [T]>::get_unchecked::h3d957dfd9ebb9ad1
[INFO] [stderr]     21:     0x55cdf282a005 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::hf51c35584e813061
[INFO] [stderr]     22:     0x55cdf2848d35 - syntex_syntax::fold::fold_attrs::hbc1d8d609a8e95c3
[INFO] [stderr]     23:     0x55cdf287e0a3 - syntex_syntax::fold::noop_fold_item_simple::h17ed4e15ba480dbb
[INFO] [stderr]     24:     0x55cdf29ffc0f - syntex_syntax::fold::Folder::fold_item_simple::ha7268a4d60eea3b8
[INFO] [stderr]     25:     0x55cdf287da5f - syntex_syntax::fold::noop_fold_item::{{closure}}::hdb99a6b594845a37
[INFO] [stderr]     26:     0x55cdf29bc2f8 - syntex_syntax::ptr::P<T>::map::h8554702ce19fb5d6
[INFO] [stderr]     27:     0x55cdf287d883 - syntex_syntax::fold::noop_fold_item::h1a9c43bc22477858
[INFO] [stderr]     28:     0x55cdf2a0fc52 - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::{{closure}}::h4d529c82cb46ce84
[INFO] [stderr]     29:     0x55cdf29f0f04 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h17060186185f2f50
[INFO] [stderr]     30:     0x55cdf2967d20 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next::hc74d1e53379f9f60
[INFO] [stderr]     31:     0x55cdf299e93c - core::ops::function::FnOnce::call_once::h0843395d8e80c3aa
[INFO] [stderr]     32:     0x55cdf29720a4 - core::iter::adapters::fuse::and_then_or_clear::ha9148491959b5f5c
[INFO] [stderr]     33:     0x55cdf296e6ee - <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::ha6dc2349411f36b1
[INFO] [stderr]     34:     0x55cdf298814e - <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::h3a40f5489d09753f
[INFO] [stderr]     35:     0x55cdf2987237 - <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::hd007c98004ae4754
[INFO] [stderr]     36:     0x55cdf293b39f - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::Extend<T>>::extend::h4e64b232b1cbdd25
[INFO] [stderr]     37:     0x55cdf2938b4d - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h34009a9259f5da42
[INFO] [stderr]     38:     0x55cdf298c0ee - core::iter::traits::iterator::Iterator::collect::h1146c474a0039e5e
[INFO] [stderr]     39:     0x55cdf2a0fbee - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h13bafc6f440e5fb0
[INFO] [stderr]     40:     0x55cdf287cff6 - syntex_syntax::fold::noop_fold_crate::h14b6fdbf89e26961
[INFO] [stderr]     41:     0x55cdf29ffa3f - syntex_syntax::fold::Folder::fold_crate::h1eae2e9a9748596f
[INFO] [stderr]     42:     0x55cdf2a0fb4c - syntex_syntax::ext::decorator::expand_attributes::hf8a96e5a927f8421
[INFO] [stderr]     43:     0x55cdf2942aea - syntex_syntax::ext::expand::MacroExpander::expand_crate::h1e08174ee28e67f4
[INFO] [stderr]     44:     0x55cdf27c4693 - syntex::registry::Registry::expand_crate::h669781977d5f8fc0
[INFO] [stderr]     45:     0x55cdf274e628 - syntex::registry::Registry::expand::hcc93817613a1a5be
[INFO] [stderr]     46:     0x55cdf274bc6e - serde_codegen::expand::{{closure}}::h9544970c7867f402
[INFO] [stderr]     47:     0x55cdf274bce6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hf9143a5227987236
[INFO] [stderr]     48:     0x55cdf274d0c5 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h9d534bc7e0f09c11
[INFO] [stderr]     49:     0x55cdf274ba48 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h671ec38b67d9ed4d
[INFO] [stderr]     50:     0x55cdf274d204 - std::panicking::try::do_call::h8f19d6a2ea367116
[INFO] [stderr]     51:     0x55cdf274f01b - __rust_try
[INFO] [stderr]     52:     0x55cdf274d118 - std::panicking::try::h526782a90fa454d9
[INFO] [stderr]     53:     0x55cdf274cf40 - std::thread::Builder::spawn_unchecked_::{{closure}}::h930f3180b7099da7
[INFO] [stderr]     54:     0x55cdf274d376 - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha0a962630b5b3394
[INFO] [stderr]     55:     0x55cdf2ae61bb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h252306ef2fe748f7
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/alloc/src/boxed.rs:2018:9
[INFO] [stderr]     56:     0x55cdf2ae61bb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd1fa1c28a5062a0a
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/alloc/src/boxed.rs:2018:9
[INFO] [stderr]     57:     0x55cdf2ae61bb - std::sys::pal::unix::thread::Thread::new::thread_start::hea1af2ba6088572a
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stderr]     58:     0x7f6e4be22ac3 - <unknown>
[INFO] [stderr]     59:     0x7f6e4beb3bf4 - __clone
[INFO] [stderr]     60:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "4165e46bc34689f553e37a11119932ee311b5b430d145df8e8c3084c97b45b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4165e46bc34689f553e37a11119932ee311b5b430d145df8e8c3084c97b45b26", kill_on_drop: false }`
[INFO] [stdout] 4165e46bc34689f553e37a11119932ee311b5b430d145df8e8c3084c97b45b26
