[INFO] fetching crate accord 0.2.2...
[INFO] checking accord-0.2.2 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate accord 0.2.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate accord 0.2.2 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "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-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: v0.2.18)
[INFO] [stderr]       Adding quote v0.3.15 (latest: v1.0.36)
[INFO] [stderr]       Adding serde v0.8.23 (latest: v1.0.200)
[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: v1.0.116)
[INFO] [stderr]       Adding syn v0.9.2 (latest: v2.0.60)
[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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "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 num-traits v0.1.43
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded serde_codegen v0.8.14
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded serde_codegen_internals v0.10.0
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded log v0.3.9
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded term v0.4.6
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded syntex v0.45.1
[INFO] [stderr]   Downloaded syntex_errors v0.45.0
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded syntex_syntax v0.45.1
[INFO] [stderr]   Downloaded syntex_pos v0.45.0
[INFO] [stderr]   Downloaded syn v0.9.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c28e8865f7e3facb7d8bda124014bbc53b73ddb934755aee7f4190b33cdd1134
[INFO] running `Command { std: "docker" "start" "-a" "c28e8865f7e3facb7d8bda124014bbc53b73ddb934755aee7f4190b33cdd1134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c28e8865f7e3facb7d8bda124014bbc53b73ddb934755aee7f4190b33cdd1134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28e8865f7e3facb7d8bda124014bbc53b73ddb934755aee7f4190b33cdd1134", kill_on_drop: false }`
[INFO] [stdout] c28e8865f7e3facb7d8bda124014bbc53b73ddb934755aee7f4190b33cdd1134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec77492e0581ddb8d75f5332b8e0405ef6de05519f48e87c58af5177b8d59d29
[INFO] running `Command { std: "docker" "start" "-a" "ec77492e0581ddb8d75f5332b8e0405ef6de05519f48e87c58af5177b8d59d29", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking itoa v0.1.1
[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]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling serde_codegen_internals v0.10.0
[INFO] [stderr]    Compiling syntex_pos v0.45.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[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-6dffc4d3a106158b/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at library/core/src/panicking.rs:220:5:
[INFO] [stderr]   unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55b10a0255a5 - std::backtrace_rs::backtrace::libunwind::trace::hf6d84d188eed4942
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x55b10a0255a5 - std::backtrace_rs::backtrace::trace_unsynchronized::hb841ab02b27b2a81
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55b10a0255a5 - std::sys_common::backtrace::_print_fmt::h7d09263e980d2dc2
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55b10a0255a5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8710a3386e66dc13
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55b10a04480b - core::fmt::rt::Argument::fmt::h56356193ea14b69e
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/core/src/fmt/rt.rs:165:63
[INFO] [stderr]      5:     0x55b10a04480b - core::fmt::write::ha8a35e57fe29df69
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/core/src/fmt/mod.rs:1157:21
[INFO] [stderr]      6:     0x55b10a0233ff - std::io::Write::write_fmt::h070417d35cbd0295
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/io/mod.rs:1832:15
[INFO] [stderr]      7:     0x55b10a02537e - std::sys_common::backtrace::_print::h98c81ef11000e712
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55b10a02537e - std::sys_common::backtrace::print::hb4fda26b0eb411fc
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55b10a026639 - std::panicking::default_hook::{{closure}}::h58b999a8a8b72663
[INFO] [stderr]     10:     0x55b10a02637d - std::panicking::default_hook::h9ee81ffa3eaff881
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/panicking.rs:298:9
[INFO] [stderr]     11:     0x55b10a026ad3 - std::panicking::rust_panic_with_hook::h7cf1f420e89ee254
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/panicking.rs:795:13
[INFO] [stderr]     12:     0x55b10a02697b - std::panicking::begin_panic_handler::{{closure}}::h1e92862156407829
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/panicking.rs:656:13
[INFO] [stderr]     13:     0x55b10a025a69 - std::sys_common::backtrace::__rust_end_short_backtrace::hdb9396439049b139
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55b10a0266e7 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/panicking.rs:652:5
[INFO] [stderr]     15:     0x55b109c95100 - core::panicking::panic_nounwind_fmt::runtime::ha13be5d66c23ec9f
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/core/src/panicking.rs:110:18
[INFO] [stderr]     16:     0x55b109c95100 - core::panicking::panic_nounwind_fmt::h69f3ef1679142200
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/core/src/panicking.rs:120:5
[INFO] [stderr]     17:     0x55b109c95192 - core::panicking::panic_nounwind::hf4d33646b7c52f0b
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/core/src/panicking.rs:220:5
[INFO] [stderr]     18:     0x55b109efaadb - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::hb583eef2f77c2bbf
[INFO] [stderr]     19:     0x55b109efa314 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h3bf9209a4efeb736
[INFO] [stderr]     20:     0x55b109e824b5 - core::slice::<impl [T]>::get_unchecked::h6a0feb8d002ff357
[INFO] [stderr]     21:     0x55b109d2c9a5 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::h05b08100b1f13a0e
[INFO] [stderr]     22:     0x55b109d901e5 - syntex_syntax::fold::fold_attrs::he63338da192802c6
[INFO] [stderr]     23:     0x55b109dc6493 - syntex_syntax::fold::noop_fold_item_simple::h92cc932872978da8
[INFO] [stderr]     24:     0x55b109e9076f - syntex_syntax::fold::Folder::fold_item_simple::hfdd6e583723d0122
[INFO] [stderr]     25:     0x55b109dc4f3f - syntex_syntax::fold::noop_fold_item::{{closure}}::h55a9927340de52d5
[INFO] [stderr]     26:     0x55b109f44298 - syntex_syntax::ptr::P<T>::map::h3f3fe7592409f660
[INFO] [stderr]     27:     0x55b109dc4d33 - syntex_syntax::fold::noop_fold_item::h0b9d3e724937c2d9
[INFO] [stderr]     28:     0x55b109ea0752 - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::{{closure}}::h055d5de0d6f541ed
[INFO] [stderr]     29:     0x55b109e818e4 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h1368046fc9fa497d
[INFO] [stderr]     30:     0x55b109f53de0 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next::he3f050093d9e2daa
[INFO] [stderr]     31:     0x55b109eeaafc - core::ops::function::FnOnce::call_once::hf8d6e3b26866e492
[INFO] [stderr]     32:     0x55b109ec0a24 - core::iter::adapters::fuse::and_then_or_clear::ha38a9392fab28fab
[INFO] [stderr]     33:     0x55b109ebdd3e - <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::h575d864ffc555761
[INFO] [stderr]     34:     0x55b109f01ade - <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::h47d43a9aea578f14
[INFO] [stderr]     35:     0x55b109f00bf7 - <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::h790064546a34bda8
[INFO] [stderr]     36:     0x55b109f202ef - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::Extend<T>>::extend::h64b5b5245ec9d38d
[INFO] [stderr]     37:     0x55b109f1d39d - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h0a8a4d1591277a50
[INFO] [stderr]     38:     0x55b109f044be - core::iter::traits::iterator::Iterator::collect::h6f35a09bdec65fbf
[INFO] [stderr]     39:     0x55b109ea06ee - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::hd9e315993a1405ff
[INFO] [stderr]     40:     0x55b109dc44a6 - syntex_syntax::fold::noop_fold_crate::haa869e23b165b5f2
[INFO] [stderr]     41:     0x55b109e9059f - syntex_syntax::fold::Folder::fold_crate::hd09fa55dc1cd0f4b
[INFO] [stderr]     42:     0x55b109ea064c - syntex_syntax::ext::decorator::expand_attributes::h27f7fe8b55e5db4f
[INFO] [stderr]     43:     0x55b109f2795a - syntex_syntax::ext::expand::MacroExpander::expand_crate::h6ae04b62e1300939
[INFO] [stderr]     44:     0x55b109d0e173 - syntex::registry::Registry::expand_crate::hf6ed507fd1b74aa1
[INFO] [stderr]     45:     0x55b109c98958 - syntex::registry::Registry::expand::hbb0e647c2b692c7e
[INFO] [stderr]     46:     0x55b109c95cec - serde_codegen::expand::{{closure}}::hb86da9f4e6d55df2
[INFO] [stderr]     47:     0x55b109c95d56 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha6b52ec2e169c204
[INFO] [stderr]     48:     0x55b109c971b5 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h7c58325d217c4ffe
[INFO] [stderr]     49:     0x55b109c95ac8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he904fbde378fed00
[INFO] [stderr]     50:     0x55b109c97444 - std::panicking::try::do_call::h8546823cf39105aa
[INFO] [stderr]     51:     0x55b109c9934b - __rust_try
[INFO] [stderr]     52:     0x55b109c97348 - std::panicking::try::h15e89d3e109a04d4
[INFO] [stderr]     53:     0x55b109c96ec0 - std::thread::Builder::spawn_unchecked_::{{closure}}::h199021138b1e7fb6
[INFO] [stderr]     54:     0x55b109c97596 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h66653eda89a9292c
[INFO] [stderr]     55:     0x55b10a0290ab - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h87f4582e8ad3bc38
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/alloc/src/boxed.rs:2022:9
[INFO] [stderr]     56:     0x55b10a0290ab - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he31880cd6e731b9d
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/alloc/src/boxed.rs:2022:9
[INFO] [stderr]     57:     0x55b10a0290ab - std::sys::pal::unix::thread::Thread::new::thread_start::h9c41f6e56e9f8829
[INFO] [stderr]                                  at /rustc/c2f2db79ca3024f68d22b45aa22b570775c2c4ad/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stderr]     58:     0x7fcb1a594ac3 - <unknown>
[INFO] [stderr]     59:     0x7fcb1a625a04 - __clone
[INFO] [stderr]     60:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "ec77492e0581ddb8d75f5332b8e0405ef6de05519f48e87c58af5177b8d59d29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec77492e0581ddb8d75f5332b8e0405ef6de05519f48e87c58af5177b8d59d29", kill_on_drop: false }`
[INFO] [stdout] ec77492e0581ddb8d75f5332b8e0405ef6de05519f48e87c58af5177b8d59d29
