[INFO] fetching crate libflo_module 0.1.2...
[INFO] checking libflo_module-0.1.2 against master#158f00a1c5175648af6f6099b075f78d1d014a28 for pr-121251
[INFO] extracting crate libflo_module 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate libflo_module 0.1.2 on toolchain 158f00a1c5175648af6f6099b075f78d1d014a28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libflo_module 0.1.2
[INFO] finished tweaking crates.io crate libflo_module 0.1.2
[INFO] tweaked toml for crates.io crate libflo_module 0.1.2 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" "+158f00a1c5175648af6f6099b075f78d1d014a28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syntex v0.44.0
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded quasi_macros v0.20.0
[INFO] [stderr]   Downloaded quasi v0.20.1
[INFO] [stderr]   Downloaded aster v0.27.0
[INFO] [stderr]   Downloaded serde_codegen_internals v0.8.9
[INFO] [stderr]   Downloaded serde_macros v0.8.9
[INFO] [stderr]   Downloaded quasi_codegen v0.20.0
[INFO] [stderr]   Downloaded syntex_pos v0.44.0
[INFO] [stderr]   Downloaded serde_codegen v0.8.9
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded syntex_errors v0.44.0
[INFO] [stderr]   Downloaded error-chain v0.7.2
[INFO] [stderr]   Downloaded syntex_syntax v0.44.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce942ce7aa1d360d47dfdf87e3acfe37a124a574a522afeecd1244a6415521c4
[INFO] running `Command { std: "docker" "start" "-a" "ce942ce7aa1d360d47dfdf87e3acfe37a124a574a522afeecd1244a6415521c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce942ce7aa1d360d47dfdf87e3acfe37a124a574a522afeecd1244a6415521c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce942ce7aa1d360d47dfdf87e3acfe37a124a574a522afeecd1244a6415521c4", kill_on_drop: false }`
[INFO] [stdout] ce942ce7aa1d360d47dfdf87e3acfe37a124a574a522afeecd1244a6415521c4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 724ba8daec9aca4400180cfc57542883703a770a86402176daabcaf138646c1f
[INFO] running `Command { std: "docker" "start" "-a" "724ba8daec9aca4400180cfc57542883703a770a86402176daabcaf138646c1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]    Compiling syntex_pos v0.44.0
[INFO] [stderr]    Compiling syntex_errors v0.44.0
[INFO] [stderr]    Compiling syntex_syntax v0.44.1
[INFO] [stderr]     Checking backtrace v0.3.69
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]    Compiling syntex v0.44.0
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.8.9
[INFO] [stderr]    Compiling quasi v0.20.1
[INFO] [stderr]    Compiling quasi_codegen v0.20.0
[INFO] [stderr]    Compiling serde_codegen v0.8.9
[INFO] [stderr] error: failed to run custom build command for `serde_codegen v0.8.9`
[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/serde_codegen-dc34d87b46632d92/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at library/core/src/panicking.rs:155:5:
[INFO] [stderr]   unsafe precondition(s) violated: hint::assert_unchecked must never be called when the condition is false
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5648ef4cfb26 - std::backtrace_rs::backtrace::libunwind::trace::h4a01ad0b1654c0b3
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stderr]      1:     0x5648ef4cfb26 - std::backtrace_rs::backtrace::trace_unsynchronized::h9f80f9c1a87c88e7
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5648ef4cfb26 - std::sys_common::backtrace::_print_fmt::hfb825d5b45347dc7
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x5648ef4cfb26 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd399990d6b396792
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x5648ef4ef58c - core::fmt::rt::Argument::fmt::h6780ff77d2596c7e
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x5648ef4ef58c - core::fmt::write::heeb505bfc1cf113c
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/core/src/fmt/mod.rs:1120:17
[INFO] [stderr]      6:     0x5648ef4cd91f - std::io::Write::write_fmt::h06956d82941b8ab5
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/io/mod.rs:1846:15
[INFO] [stderr]      7:     0x5648ef4cf8d4 - std::sys_common::backtrace::_print::h5a2ad20f98de74d9
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x5648ef4cf8d4 - std::sys_common::backtrace::print::hb7c2e18145b4bc56
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x5648ef4d0f2b - std::panicking::default_hook::{{closure}}::h2c7ccc2f6c33079c
[INFO] [stderr]     10:     0x5648ef4d0c79 - std::panicking::default_hook::h6ae4b6e844fd8bea
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x5648ef4d13cd - std::panicking::rust_panic_with_hook::h1591957e3d275a90
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/panicking.rs:781:13
[INFO] [stderr]     12:     0x5648ef4d1269 - std::panicking::begin_panic_handler::{{closure}}::h384c4e87a0cf88d5
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/panicking.rs:651:13
[INFO] [stderr]     13:     0x5648ef4d0006 - std::sys_common::backtrace::__rust_end_short_backtrace::h091aa6af759b84a7
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x5648ef4d0fd4 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/panicking.rs:647:5
[INFO] [stderr]     15:     0x5648ef1f669a - core::panicking::panic_nounwind_fmt::runtime::h5059c904e3870214
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/core/src/panicking.rs:110:18
[INFO] [stderr]     16:     0x5648ef1f669a - core::panicking::panic_nounwind_fmt::h940bfce281f9d77b
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/core/src/panicking.rs:122:9
[INFO] [stderr]     17:     0x5648ef1f6749 - core::panicking::panic_nounwind::he16f3a595c260cd7
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/core/src/panicking.rs:155:5
[INFO] [stderr]     18:     0x5648ef4f2dd8 - core::hint::assert_unchecked::precondition_check::h2727a591202fd76d
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/core/src/intrinsics.rs:2666:21
[INFO] [stderr]     19:     0x5648ef3a99d1 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h6d349df9e4a4cb52
[INFO] [stderr]     20:     0x5648ef430e95 - core::slice::<impl [T]>::get_unchecked::hce6b5240c54dcbee
[INFO] [stderr]     21:     0x5648ef26d63e - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::ha85476d27fb195d4
[INFO] [stderr]     22:     0x5648ef39274c - syntex_syntax::fold::noop_fold_mod::h9bf70cb122f77ce9
[INFO] [stderr]     23:     0x5648ef36aa3f - syntex_syntax::fold::Folder::fold_mod::hc6d0aff7d4580afb
[INFO] [stderr]     24:     0x5648ef38a2dd - syntex_syntax::fold::noop_fold_item_kind::h0ac9b56cba339071
[INFO] [stderr]     25:     0x5648ef36a70f - syntex_syntax::fold::Folder::fold_item_kind::h16014f73fb23544d
[INFO] [stderr]     26:     0x5648ef3939ea - syntex_syntax::fold::noop_fold_item_simple::h2af3aadbdecb558b
[INFO] [stderr]     27:     0x5648ef36a67f - syntex_syntax::fold::Folder::fold_item_simple::hc6183892c5174cea
[INFO] [stderr]     28:     0x5648ef39342f - syntex_syntax::fold::noop_fold_item::{{closure}}::hc0d641639746c4cf
[INFO] [stderr]     29:     0x5648ef439a68 - syntex_syntax::ptr::P<T>::map::h2d8654be6c9b4e72
[INFO] [stderr]     30:     0x5648ef393323 - syntex_syntax::fold::noop_fold_item::h657a62eab7c04984
[INFO] [stderr]     31:     0x5648ef374cd1 - syntex_syntax::ext::expand::expand_multi_modified::hcefc37d13ec33c0b
[INFO] [stderr]     32:     0x5648ef3de7f8 - syntex_syntax::ext::decorator::expand_annotatable::hca0fe9f47d9cf5a9
[INFO] [stderr]     33:     0x5648ef373cdc - syntex_syntax::ext::expand::expand_item::h1e02527f80945d71
[INFO] [stderr]     34:     0x5648ef377052 - <syntex_syntax::ext::expand::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h4d0e7b2452f50277
[INFO] [stderr]     35:     0x5648ef392ae6 - syntex_syntax::fold::noop_fold_crate::h418c921ea9ee9d45
[INFO] [stderr]     36:     0x5648ef37684e - <syntex_syntax::ext::expand::MacroExpander as syntex_syntax::fold::Folder>::fold_crate::he3a093dc01dcbe21
[INFO] [stderr]     37:     0x5648ef377ec2 - syntex_syntax::ext::expand::expand_crate_with_expander::h0bcfff3d7d3ce19c
[INFO] [stderr]     38:     0x5648ef377a24 - syntex_syntax::ext::expand::expand_crate::hcb175fb0fae20698
[INFO] [stderr]     39:     0x5648ef22b54b - syntex::Registry::expand_crate::hcb95acb72fa12d65
[INFO] [stderr]     40:     0x5648ef1fbc07 - syntex::Registry::expand::h23cee4ee2bad5d17
[INFO] [stderr]     41:     0x5648ef1f711a - quasi_codegen::expand::{{closure}}::h8ffd46b39f2fd65d
[INFO] [stderr]     42:     0x5648ef1f71c6 - std::sys_common::backtrace::__rust_begin_short_backtrace::heb4eba1da717a2c5
[INFO] [stderr]     43:     0x5648ef1f9635 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha1484b1c231e55cf
[INFO] [stderr]     44:     0x5648ef1f6e88 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb55d9cdcd8e7d277
[INFO] [stderr]     45:     0x5648ef1f9864 - std::panicking::try::do_call::h96bf47777c99db90
[INFO] [stderr]     46:     0x5648ef1fcecb - __rust_try
[INFO] [stderr]     47:     0x5648ef1f9768 - std::panicking::try::haf5ecaaa1edd9f22
[INFO] [stderr]     48:     0x5648ef1f921c - std::thread::Builder::spawn_unchecked_::{{closure}}::h08b8726997308fed
[INFO] [stderr]     49:     0x5648ef1f9b76 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2d87858d0ef0531d
[INFO] [stderr]     50:     0x5648ef4d3775 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9da86adb56a7a31f
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/alloc/src/boxed.rs:2016:9
[INFO] [stderr]     51:     0x5648ef4d3775 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hade6747cc077d2a3
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/alloc/src/boxed.rs:2016:9
[INFO] [stderr]     52:     0x5648ef4d3775 - std::sys::pal::unix::thread::Thread::new::thread_start::he910e3d9c07f2759
[INFO] [stderr]                                  at /rustc/158f00a1c5175648af6f6099b075f78d1d014a28/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stderr]     53:     0x7eff840bdac3 - <unknown>
[INFO] [stderr]     54:     0x7eff8414ebf4 - __clone
[INFO] [stderr]     55:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "724ba8daec9aca4400180cfc57542883703a770a86402176daabcaf138646c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "724ba8daec9aca4400180cfc57542883703a770a86402176daabcaf138646c1f", kill_on_drop: false }`
[INFO] [stdout] 724ba8daec9aca4400180cfc57542883703a770a86402176daabcaf138646c1f
