[INFO] fetching crate accord 0.2.2...
[INFO] checking accord-0.2.2 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate accord 0.2.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate accord 0.2.2 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 26 packages to latest compatible versions
[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: v0.2.19)
[INFO] [stderr]       Adding quote v0.3.15 (latest: v1.0.36)
[INFO] [stderr]       Adding serde v0.8.23 (latest: v1.0.203)
[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: v1.0.117)
[INFO] [stderr]       Adding syn v0.9.2 (latest: v2.0.66)
[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" "+506512391b1a75ae450d36c9420978402a91abcc" "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 unicode-xid v0.0.3
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded term v0.4.6
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded syn v0.9.2
[INFO] [stderr]   Downloaded serde_codegen_internals v0.10.0
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded syntex_pos v0.45.0
[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 serde_codegen v0.8.14
[INFO] [stderr]   Downloaded syntex_syntax v0.45.1
[INFO] [stderr]   Downloaded syntex v0.45.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52e03d0132de90484b312e86c2da2a44c9991fff5b8dc92ec162da77733749e9
[INFO] running `Command { std: "docker" "start" "-a" "52e03d0132de90484b312e86c2da2a44c9991fff5b8dc92ec162da77733749e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52e03d0132de90484b312e86c2da2a44c9991fff5b8dc92ec162da77733749e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52e03d0132de90484b312e86c2da2a44c9991fff5b8dc92ec162da77733749e9", kill_on_drop: false }`
[INFO] [stdout] 52e03d0132de90484b312e86c2da2a44c9991fff5b8dc92ec162da77733749e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d23470220c279e6213c43372912033623067be72bbf9fb30c62dbfdcf5a2280a
[INFO] running `Command { std: "docker" "start" "-a" "d23470220c279e6213c43372912033623067be72bbf9fb30c62dbfdcf5a2280a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling libc v0.2.155
[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]     Checking serde v0.8.23
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]    Compiling syn v0.9.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling serde_codegen_internals v0.10.0
[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-6005094b04b0e0a1/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at library/core/src/panicking.rs:219:5:
[INFO] [stderr]   unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x564e2a041f55 - std::backtrace_rs::backtrace::libunwind::trace::h876d7c806a499a4c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x564e2a041f55 - std::backtrace_rs::backtrace::trace_unsynchronized::h93aa6ac20204363f
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x564e2a041f55 - std::sys_common::backtrace::_print_fmt::haa4d06348037420c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x564e2a041f55 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb19a1068483db389
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x564e2a0627db - core::fmt::rt::Argument::fmt::he1186800a1f8dba1
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/fmt/rt.rs:165:63
[INFO] [stderr]      5:     0x564e2a0627db - core::fmt::write::h93b97d526ac83ab7
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/fmt/mod.rs:1169:21
[INFO] [stderr]      6:     0x564e2a03f97f - std::io::Write::write_fmt::h5b8b8a434bcca5dd
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/io/mod.rs:1835:15
[INFO] [stderr]      7:     0x564e2a041d2e - std::sys_common::backtrace::_print::h68eb04d9824256f0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x564e2a041d2e - std::sys_common::backtrace::print::h9c98f0d9c4306586
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x564e2a043099 - std::panicking::default_hook::{{closure}}::hcf6830dc400daae4
[INFO] [stderr]     10:     0x564e2a042ddd - std::panicking::default_hook::h483615856e3a5cc0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:298:9
[INFO] [stderr]     11:     0x564e2a0435a3 - std::panicking::rust_panic_with_hook::h36ebc998f351e5fd
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:795:13
[INFO] [stderr]     12:     0x564e2a04344b - std::panicking::begin_panic_handler::{{closure}}::h686207a93492b797
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:656:13
[INFO] [stderr]     13:     0x564e2a042419 - std::sys_common::backtrace::__rust_end_short_backtrace::h2e37e6bf5aac538a
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x564e2a0431b7 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:652:5
[INFO] [stderr]     15:     0x564e2a0618f0 - core::panicking::panic_nounwind_fmt::runtime::h21fad8d71097c257
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/panicking.rs:110:18
[INFO] [stderr]     16:     0x564e2a0618f0 - core::panicking::panic_nounwind_fmt::h2c1f7221d1fd135b
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/panicking.rs:120:5
[INFO] [stderr]     17:     0x564e2a061982 - core::panicking::panic_nounwind::h35e8f7cf7cee336c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/panicking.rs:219:5
[INFO] [stderr]     18:     0x564e29f062cb - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::ha5fb57e7664c9843
[INFO] [stderr]     19:     0x564e29f05c84 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h8d92bf2531a9132d
[INFO] [stderr]     20:     0x564e29f3fa75 - core::slice::<impl [T]>::get_unchecked::h95f3a0e2d00e5643
[INFO] [stderr]     21:     0x564e29d874a5 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::ha5c1acd51642ad88
[INFO] [stderr]     22:     0x564e29db907c - syntex_syntax::fold::fold_attrs::h098d92984bfb2676
[INFO] [stderr]     23:     0x564e29dedfe3 - syntex_syntax::fold::noop_fold_item_simple::h8d8f7d82226074e4
[INFO] [stderr]     24:     0x564e29f4d6bf - syntex_syntax::fold::Folder::fold_item_simple::h345c4133477469f9
[INFO] [stderr]     25:     0x564e29decaef - syntex_syntax::fold::noop_fold_item::{{closure}}::h74f4320ce79a22bb
[INFO] [stderr]     26:     0x564e29f6a028 - syntex_syntax::ptr::P<T>::map::h0a3710438339e211
[INFO] [stderr]     27:     0x564e29dec91b - syntex_syntax::fold::noop_fold_item::hb60551fc280e0e71
[INFO] [stderr]     28:     0x564e29f5cf02 - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::{{closure}}::hb35c63e302aa6415
[INFO] [stderr]     29:     0x564e29f3e864 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h76de7e073951e768
[INFO] [stderr]     30:     0x564e29e83a9c - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next::hd6bf81592907e8b8
[INFO] [stderr]     31:     0x564e29e8fd8c - core::ops::function::FnOnce::call_once::hdd93266af4542bac
[INFO] [stderr]     32:     0x564e29e9d13b - core::iter::adapters::fuse::and_then_or_clear::h18b411af9410baa0
[INFO] [stderr]     33:     0x564e29e8c68e - <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::h6349a28426bdc6ae
[INFO] [stderr]     34:     0x564e29e86a4e - <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::hf3e2495b13ac11e6
[INFO] [stderr]     35:     0x564e29e846e7 - <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::hb79b55257e809640
[INFO] [stderr]     36:     0x564e29f272af - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::Extend<T>>::extend::h86a574663ccb9039
[INFO] [stderr]     37:     0x564e29f2514d - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h8a7a38c74c352aee
[INFO] [stderr]     38:     0x564e29e882ce - core::iter::traits::iterator::Iterator::collect::he0ededdba646f397
[INFO] [stderr]     39:     0x564e29f5ce9c - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h5659cee4c48282b6
[INFO] [stderr]     40:     0x564e29debff6 - syntex_syntax::fold::noop_fold_crate::h7cb748db7e63e9cb
[INFO] [stderr]     41:     0x564e29f4d51f - syntex_syntax::fold::Folder::fold_crate::h0d2a44c01f67a68d
[INFO] [stderr]     42:     0x564e29f5ce0c - syntex_syntax::ext::decorator::expand_attributes::hcaf478d6b522ee5d
[INFO] [stderr]     43:     0x564e29f2eab3 - syntex_syntax::ext::expand::MacroExpander::expand_crate::hb778788364f7350f
[INFO] [stderr]     44:     0x564e29d3c343 - syntex::registry::Registry::expand_crate::hedcc0ccc75eeb44f
[INFO] [stderr]     45:     0x564e29cc93e8 - syntex::registry::Registry::expand::hab41ed84619098fc
[INFO] [stderr]     46:     0x564e29cc683c - serde_codegen::expand::{{closure}}::h393a4879c151f74c
[INFO] [stderr]     47:     0x564e29cc68b6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd4e895f975362771
[INFO] [stderr]     48:     0x564e29cc7c75 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h038a41aaef15003d
[INFO] [stderr]     49:     0x564e29cc6608 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h85245f4087d963d6
[INFO] [stderr]     50:     0x564e29cc7ef4 - std::panicking::try::do_call::hbc7c111075df4119
[INFO] [stderr]     51:     0x564e29cc9d9b - __rust_try
[INFO] [stderr]     52:     0x564e29cc7e08 - std::panicking::try::h35e87cfc1b5062d2
[INFO] [stderr]     53:     0x564e29cc7980 - std::thread::Builder::spawn_unchecked_::{{closure}}::h07b2e9e00c825382
[INFO] [stderr]     54:     0x564e29cc8006 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h991bf5769926d0cd
[INFO] [stderr]     55:     0x564e2a045c4b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h83cef2d5eb6c4928
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/alloc/src/boxed.rs:2063:9
[INFO] [stderr]     56:     0x564e2a045c4b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h60fa151549b18066
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/alloc/src/boxed.rs:2063:9
[INFO] [stderr]     57:     0x564e2a045c4b - std::sys::pal::unix::thread::Thread::new::thread_start::h784514548b995cdf
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stderr]     58:     0x7f5bfaa24ac3 - <unknown>
[INFO] [stderr]     59:     0x7f5bfaab5a04 - __clone
[INFO] [stderr]     60:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "d23470220c279e6213c43372912033623067be72bbf9fb30c62dbfdcf5a2280a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d23470220c279e6213c43372912033623067be72bbf9fb30c62dbfdcf5a2280a", kill_on_drop: false }`
[INFO] [stdout] d23470220c279e6213c43372912033623067be72bbf9fb30c62dbfdcf5a2280a