[INFO] fetching crate libflo_module 0.1.2...
[INFO] checking libflo_module-0.1.2 against master#8549802939cd01111c46e34a7b67cb1933977af9 for pr-132712
[INFO] extracting crate libflo_module 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate libflo_module 0.1.2 on toolchain 8549802939cd01111c46e34a7b67cb1933977af9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding error-chain v0.7.2 (available: v0.12.4)
[INFO] [stderr]       Adding serde v0.8.23 (available: v1.0.214)
[INFO] [stderr]       Adding serde_codegen v0.8.9 (available: v0.8.23)
[INFO] [stderr]       Adding serde_json v0.8.6 (available: v1.0.132)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "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 syntex_errors v0.44.0
[INFO] [stderr]   Downloaded syntex v0.44.0
[INFO] [stderr]   Downloaded syntex_pos v0.44.0
[INFO] [stderr]   Downloaded serde_codegen_internals v0.8.9
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded serde_macros v0.8.9
[INFO] [stderr]   Downloaded quasi_codegen v0.20.0
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded error-chain v0.7.2
[INFO] [stderr]   Downloaded serde_codegen v0.8.9
[INFO] [stderr]   Downloaded quasi v0.20.1
[INFO] [stderr]   Downloaded quasi_macros v0.20.0
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded aster v0.27.0
[INFO] [stderr]   Downloaded syntex_syntax v0.44.1
[INFO] [stderr]   Downloaded dtoa v0.2.2
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9adf8c67e7b93fbdc97ed7de6255ebd5c6017b36332ae836723f0a9842ce106
[INFO] running `Command { std: "docker" "start" "-a" "b9adf8c67e7b93fbdc97ed7de6255ebd5c6017b36332ae836723f0a9842ce106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9adf8c67e7b93fbdc97ed7de6255ebd5c6017b36332ae836723f0a9842ce106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9adf8c67e7b93fbdc97ed7de6255ebd5c6017b36332ae836723f0a9842ce106", kill_on_drop: false }`
[INFO] [stdout] b9adf8c67e7b93fbdc97ed7de6255ebd5c6017b36332ae836723f0a9842ce106
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc1940d0af880f5f952f60a8926f3ed9b7fcf6dc581dc8bdd02f94abd7e93b9b
[INFO] running `Command { std: "docker" "start" "-a" "fc1940d0af880f5f952f60a8926f3ed9b7fcf6dc581dc8bdd02f94abd7e93b9b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling libc v0.2.162
[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 dtoa v0.2.2
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking error-chain v0.7.2
[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]    Compiling aster v0.27.0
[INFO] [stderr]    Compiling syntex v0.44.0
[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-0f4674d28ab2e570/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:     0x62a36da5f27a - std::backtrace_rs::backtrace::libunwind::trace::h5be874568ba241a9
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]      1:     0x62a36da5f27a - std::backtrace_rs::backtrace::trace_unsynchronized::hcc6e3615c19d5c70
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x62a36da5f27a - std::sys::backtrace::_print_fmt::hf59cdfc8cb05e657
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x62a36da5f27a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8d76a2ebad741c31
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x62a36da7de23 - core::fmt::rt::Argument::fmt::h3163b9d342a91e6e
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/core/src/fmt/rt.rs:177:76
[INFO] [stderr]      5:     0x62a36da7de23 - core::fmt::write::h7083017e822ed433
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/core/src/fmt/mod.rs:1189:21
[INFO] [stderr]      6:     0x62a36da5c5b3 - std::io::Write::write_fmt::h46aae0d6ba1f44cd
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/io/mod.rs:1839:15
[INFO] [stderr]      7:     0x62a36da5f0c2 - std::sys::backtrace::BacktraceLock::print::h868a0238128efcee
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x62a36da6008c - std::panicking::default_hook::{{closure}}::h2066e468256aa3a1
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/panicking.rs:268:22
[INFO] [stderr]      9:     0x62a36da5fed2 - std::panicking::default_hook::haec2bd80a2bacd69
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/panicking.rs:295:9
[INFO] [stderr]     10:     0x62a36da606c7 - std::panicking::rust_panic_with_hook::hb61a22e0c1888abf
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/panicking.rs:801:13
[INFO] [stderr]     11:     0x62a36da60526 - std::panicking::begin_panic_handler::{{closure}}::hdb44db17f4634f1a
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/panicking.rs:667:13
[INFO] [stderr]     12:     0x62a36da5f759 - std::sys::backtrace::__rust_end_short_backtrace::hec6e4cf6b39c69c1
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/sys/backtrace.rs:170:18
[INFO] [stderr]     13:     0x62a36da601ec - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/panicking.rs:665:5
[INFO] [stderr]     14:     0x62a36da7d00d - core::panicking::panic_nounwind_fmt::runtime::h0c731c3041bc717d
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/core/src/panicking.rs:119:22
[INFO] [stderr]     15:     0x62a36da7d00d - core::panicking::panic_nounwind_fmt::hd115ac3975091fc6
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/core/src/intrinsics.rs:2984:9
[INFO] [stderr]     16:     0x62a36da7d0a2 - core::panicking::panic_nounwind::hb8f086311e09c683
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/core/src/panicking.rs:223:5
[INFO] [stderr]     17:     0x62a36d8cc74b - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::h772d23ab8d429607
[INFO] [stderr]     18:     0x62a36d8cc412 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h921019e81f181f49
[INFO] [stderr]     19:     0x62a36d922b25 - core::slice::<impl [T]>::get_unchecked::h9cc76a7fba222f98
[INFO] [stderr]     20:     0x62a36d8202c4 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::h7ea4d2a47c9ca7af
[INFO] [stderr]     21:     0x62a36d8b5b6c - syntex_syntax::fold::noop_fold_mod::h616f96f72e5145ef
[INFO] [stderr]     22:     0x62a36d99985f - syntex_syntax::fold::Folder::fold_mod::hc0514415fc6cd35a
[INFO] [stderr]     23:     0x62a36d8af0ba - syntex_syntax::fold::noop_fold_item_kind::h980ca9092ee1238c
[INFO] [stderr]     24:     0x62a36d99955f - syntex_syntax::fold::Folder::fold_item_kind::h6f8847dd6e2638c3
[INFO] [stderr]     25:     0x62a36d8b6b6d - syntex_syntax::fold::noop_fold_item_simple::h26e97297e5d3cd17
[INFO] [stderr]     26:     0x62a36d99946f - syntex_syntax::fold::Folder::fold_item_simple::h89978c79d78b15ca
[INFO] [stderr]     27:     0x62a36d8b69af - syntex_syntax::fold::noop_fold_item::{{closure}}::h15d9dedd1fa5c0a9
[INFO] [stderr]     28:     0x62a36d92dc48 - syntex_syntax::ptr::P<T>::map::hf5d04aadf569f4a4
[INFO] [stderr]     29:     0x62a36d8b691b - syntex_syntax::fold::noop_fold_item::h8b5f3d05c03573da
[INFO] [stderr]     30:     0x62a36d9a4014 - syntex_syntax::ext::expand::expand_multi_modified::h90af8cfe25a4c173
[INFO] [stderr]     31:     0x62a36d8ea2d8 - syntex_syntax::ext::decorator::expand_annotatable::h1822ecd901809390
[INFO] [stderr]     32:     0x62a36d9a300c - syntex_syntax::ext::expand::expand_item::h0c415cd5040b6c3a
[INFO] [stderr]     33:     0x62a36d9a644c - <syntex_syntax::ext::expand::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h40e1bfe110f26ce1
[INFO] [stderr]     34:     0x62a36d8b6060 - syntex_syntax::fold::noop_fold_crate::h213b71599aa7777f
[INFO] [stderr]     35:     0x62a36d9a5c3e - <syntex_syntax::ext::expand::MacroExpander as syntex_syntax::fold::Folder>::fold_crate::h03e8664b6859c20d
[INFO] [stderr]     36:     0x62a36d9a72c2 - syntex_syntax::ext::expand::expand_crate_with_expander::hcb5ad86066507a9d
[INFO] [stderr]     37:     0x62a36d9a6e24 - syntex_syntax::ext::expand::expand_crate::hfd9e42974fb3884f
[INFO] [stderr]     38:     0x62a36d7f5769 - syntex::Registry::expand_crate::h2c2e8c2caa46b86f
[INFO] [stderr]     39:     0x62a36d7c3f2e - syntex::Registry::expand::h6483cdde27bfcf10
[INFO] [stderr]     40:     0x62a36d7c1928 - quasi_codegen::expand::{{closure}}::h545a99e5d2577927
[INFO] [stderr]     41:     0x62a36d7c1f66 - std::sys::backtrace::__rust_begin_short_backtrace::hbf04f4b479e3a116
[INFO] [stderr]     42:     0x62a36d7c7635 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h7474634533371a06
[INFO] [stderr]     43:     0x62a36d7c1668 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hbb66711edc512bb0
[INFO] [stderr]     44:     0x62a36d7c2024 - std::panicking::try::do_call::h06102374dd02e2f6
[INFO] [stderr]     45:     0x62a36d7c7b4b - __rust_try
[INFO] [stderr]     46:     0x62a36d7c6b8a - std::thread::Builder::spawn_unchecked_::{{closure}}::h1d20997fe3a8b830
[INFO] [stderr]     47:     0x62a36d7c2236 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7b52d111d2f77402
[INFO] [stderr]     48:     0x62a36da6296b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfae9a2c8495c9ac5
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/alloc/src/boxed.rs:1967:9
[INFO] [stderr]     49:     0x62a36da6296b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hcb0933de66d55704
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/alloc/src/boxed.rs:1967:9
[INFO] [stderr]     50:     0x62a36da6296b - std::sys::pal::unix::thread::Thread::new::thread_start::h9245d1ee3a9d0779
[INFO] [stderr]                                  at /rustc/8549802939cd01111c46e34a7b67cb1933977af9/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stderr]     51:     0x724d76051ac3 - <unknown>
[INFO] [stderr]     52:     0x724d760e2a04 - clone
[INFO] [stderr]     53:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "fc1940d0af880f5f952f60a8926f3ed9b7fcf6dc581dc8bdd02f94abd7e93b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc1940d0af880f5f952f60a8926f3ed9b7fcf6dc581dc8bdd02f94abd7e93b9b", kill_on_drop: false }`
[INFO] [stdout] fc1940d0af880f5f952f60a8926f3ed9b7fcf6dc581dc8bdd02f94abd7e93b9b