[INFO] fetching crate alexa 0.1.2...
[INFO] checking alexa-0.1.2 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate alexa 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate alexa 0.1.2 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alexa 0.1.2
[INFO] finished tweaking crates.io crate alexa 0.1.2
[INFO] tweaked toml for crates.io crate alexa 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[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 itoa v0.1.1
[INFO] [stderr]   Downloaded serde_codegen v0.8.14
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded term v0.4.6
[INFO] [stderr]   Downloaded syntex_pos v0.45.0
[INFO] [stderr]   Downloaded bodyparser v0.4.1
[INFO] [stderr]   Downloaded error v0.1.9
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded persistent v0.2.1
[INFO] [stderr]   Downloaded conduit-mime-types v0.7.3
[INFO] [stderr]   Downloaded iron v0.4.0
[INFO] [stderr]   Downloaded syntex_errors v0.45.0
[INFO] [stderr]   Downloaded hpack v0.2.0
[INFO] [stderr]   Downloaded cookie v0.2.5
[INFO] [stderr]   Downloaded solicit v0.4.4
[INFO] [stderr]   Downloaded syn v0.9.2
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded hyper v0.9.18
[INFO] [stderr]   Downloaded syntex_syntax v0.45.1
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded lazy_static v0.1.16
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded unsafe-any v0.4.2
[INFO] [stderr]   Downloaded traitobject v0.0.1
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] [stderr]   Downloaded serde_codegen_internals v0.10.0
[INFO] [stderr]   Downloaded syntex v0.45.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14c3c222807e339626acbbf2f567fc6cf3161303980639679938fd5e52fb1f6a
[INFO] running `Command { std: "docker" "start" "-a" "14c3c222807e339626acbbf2f567fc6cf3161303980639679938fd5e52fb1f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14c3c222807e339626acbbf2f567fc6cf3161303980639679938fd5e52fb1f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c3c222807e339626acbbf2f567fc6cf3161303980639679938fd5e52fb1f6a", kill_on_drop: false }`
[INFO] [stdout] 14c3c222807e339626acbbf2f567fc6cf3161303980639679938fd5e52fb1f6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 556cd1e5fa1cd435d7ab323523946ee08fecc170a3f637b4ee141ba6c21bfa77
[INFO] running `Command { std: "docker" "start" "-a" "556cd1e5fa1cd435d7ab323523946ee08fecc170a3f637b4ee141ba6c21bfa77", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]    Compiling syn v0.9.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking cookie v0.2.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]    Compiling serde_codegen_internals v0.10.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling syntex_pos v0.45.0
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling syntex_errors v0.45.0
[INFO] [stderr]     Checking hyper v0.9.18
[INFO] [stderr]    Compiling syntex_syntax v0.45.1
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking iron v0.4.0
[INFO] [stderr]     Checking persistent v0.2.1
[INFO] [stderr]     Checking bodyparser v0.4.1
[INFO] [stderr]    Compiling syntex v0.45.1
[INFO] [stderr]    Compiling serde_codegen v0.8.14
[INFO] [stderr]    Compiling alexa v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `alexa v0.1.2 (/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/alexa-51edeb9e225b9a06/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at library/core/src/panicking.rs:156:5:
[INFO] [stderr]   unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5596ee1c56d2 - std::backtrace_rs::backtrace::libunwind::trace::hd67e08e71d64f12a
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x5596ee1c56d2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1b6e03ae921b7ccc
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5596ee1c56d2 - std::sys_common::backtrace::_print_fmt::h104284235ec6c37d
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x5596ee1c56d2 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h9ec11fc9f8e1e9e3
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x5596ee1e59fc - core::fmt::rt::Argument::fmt::hba6bb69d73dbc69a
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x5596ee1e59fc - core::fmt::write::h1591db653c658e71
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/fmt/mod.rs:1153:17
[INFO] [stderr]      6:     0x5596ee1c359f - std::io::Write::write_fmt::hfbffa468e7623aef
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/io/mod.rs:1843:15
[INFO] [stderr]      7:     0x5596ee1c54a4 - std::sys_common::backtrace::_print::h00abfdf27a732373
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x5596ee1c54a4 - std::sys_common::backtrace::print::ha9520edf621a95dc
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x5596ee1c6acb - std::panicking::default_hook::{{closure}}::h46e508c07ecf0cb0
[INFO] [stderr]     10:     0x5596ee1c6823 - std::panicking::default_hook::h171667a6e5f66517
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x5596ee1c6f6d - std::panicking::rust_panic_with_hook::hb748cf56d2d9af62
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x5596ee1c6e09 - std::panicking::begin_panic_handler::{{closure}}::h1f68a14808274394
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/panicking.rs:649:13
[INFO] [stderr]     13:     0x5596ee1c5ba6 - std::sys_common::backtrace::__rust_end_short_backtrace::h36413da1fefb6b73
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x5596ee1c6b74 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x5596ede2414a - core::panicking::panic_nounwind_fmt::runtime::h02e4c2cf4dde3226
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/panicking.rs:110:18
[INFO] [stderr]     16:     0x5596ede2414a - core::panicking::panic_nounwind_fmt::ha6ca1ba813de2ee3
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/panicking.rs:123:9
[INFO] [stderr]     17:     0x5596ede241f9 - core::panicking::panic_nounwind::h64cb8905c9f7b2b7
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/panicking.rs:156:5
[INFO] [stderr]     18:     0x5596edff5c6b - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::he4b4e65f584fd50f
[INFO] [stderr]     19:     0x5596edff5a44 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::hd339d903d5b4bf01
[INFO] [stderr]     20:     0x5596ee082095 - core::slice::<impl [T]>::get_unchecked::heee712219cacd8e6
[INFO] [stderr]     21:     0x5596edee1d45 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::h65671319e891a3d0
[INFO] [stderr]     22:     0x5596edf2da25 - syntex_syntax::fold::fold_attrs::h54368d870fbe9119
[INFO] [stderr]     23:     0x5596edf63253 - syntex_syntax::fold::noop_fold_item_simple::h9489e641da0baf9d
[INFO] [stderr]     24:     0x5596ee09016f - syntex_syntax::fold::Folder::fold_item_simple::hc0292d6b9260a485
[INFO] [stderr]     25:     0x5596edf6283f - syntex_syntax::fold::noop_fold_item::{{closure}}::h455130ca7a24a668
[INFO] [stderr]     26:     0x5596ee0266c8 - syntex_syntax::ptr::P<T>::map::h0de0bfee2c0825e6
[INFO] [stderr]     27:     0x5596edf62753 - syntex_syntax::fold::noop_fold_item::hd036b03dea923df7
[INFO] [stderr]     28:     0x5596ee0a1052 - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::{{closure}}::hbbe2a86af667a349
[INFO] [stderr]     29:     0x5596ee081bb4 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h45ad8989362aa6dc
[INFO] [stderr]     30:     0x5596ee036e80 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next::h38f485fcb76bf24a
[INFO] [stderr]     31:     0x5596ee00b13c - core::ops::function::FnOnce::call_once::h6bbfc2e8d08bf698
[INFO] [stderr]     32:     0x5596ee0ec9e4 - core::iter::adapters::fuse::and_then_or_clear::h63c213cfac091fc1
[INFO] [stderr]     33:     0x5596ee0e35be - <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::h403e1140c4e3a43a
[INFO] [stderr]     34:     0x5596ee009c0e - <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::hd157520b4db8a516
[INFO] [stderr]     35:     0x5596ee007c67 - <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::hc95de1cd0340f702
[INFO] [stderr]     36:     0x5596ee078e3f - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::Extend<T>>::extend::h383da1b49e804956
[INFO] [stderr]     37:     0x5596ee076cad - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h4641059d3079a623
[INFO] [stderr]     38:     0x5596ee01930e - core::iter::traits::iterator::Iterator::collect::h9568d0b68ebe36a5
[INFO] [stderr]     39:     0x5596ee0a0fee - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h1ad86e47c212adff
[INFO] [stderr]     40:     0x5596edf61dd6 - syntex_syntax::fold::noop_fold_crate::h2589f9c4cfa8fbb0
[INFO] [stderr]     41:     0x5596ee08ff9f - syntex_syntax::fold::Folder::fold_crate::hc2519c3695178590
[INFO] [stderr]     42:     0x5596ee0a0f4c - syntex_syntax::ext::decorator::expand_attributes::h3b7ef4e0f56aadda
[INFO] [stderr]     43:     0x5596ee0d2ada - syntex_syntax::ext::expand::MacroExpander::expand_crate::hc2e043f0048a53a4
[INFO] [stderr]     44:     0x5596ede9e6c3 - syntex::registry::Registry::expand_crate::h8a9a88f928eea93f
[INFO] [stderr]     45:     0x5596ede27518 - syntex::registry::Registry::expand::hc78778b352ba8e63
[INFO] [stderr]     46:     0x5596ede24b2e - serde_codegen::expand::{{closure}}::ha1a71d1cfe69fa17
[INFO] [stderr]     47:     0x5596ede24b96 - std::sys_common::backtrace::__rust_begin_short_backtrace::hcc05f374eeb1a450
[INFO] [stderr]     48:     0x5596ede25f95 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hd8d022c3fad09d6c
[INFO] [stderr]     49:     0x5596ede24908 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he8249d269a182e95
[INFO] [stderr]     50:     0x5596ede260e4 - std::panicking::try::do_call::h7eb5acd421dea194
[INFO] [stderr]     51:     0x5596ede280eb - __rust_try
[INFO] [stderr]     52:     0x5596ede26058 - std::panicking::try::hd22df4cf62d532b4
[INFO] [stderr]     53:     0x5596ede25e10 - std::thread::Builder::spawn_unchecked_::{{closure}}::ha0ece2a634b1f349
[INFO] [stderr]     54:     0x5596ede26376 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb02c4d7c10169eb9
[INFO] [stderr]     55:     0x5596ee1c9325 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hee9e7228283e5d1b
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/alloc/src/boxed.rs:2020:9
[INFO] [stderr]     56:     0x5596ee1c9325 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hbd9fbc2bde3f3fa9
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/alloc/src/boxed.rs:2020:9
[INFO] [stderr]     57:     0x5596ee1c9325 - std::sys::pal::unix::thread::Thread::new::thread_start::hc28915cf23f2ced7
[INFO] [stderr]                                  at /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stderr]     58:     0x7fe834e5eac3 - <unknown>
[INFO] [stderr]     59:     0x7fe834eefbf4 - __clone
[INFO] [stderr]     60:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "556cd1e5fa1cd435d7ab323523946ee08fecc170a3f637b4ee141ba6c21bfa77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "556cd1e5fa1cd435d7ab323523946ee08fecc170a3f637b4ee141ba6c21bfa77", kill_on_drop: false }`
[INFO] [stdout] 556cd1e5fa1cd435d7ab323523946ee08fecc170a3f637b4ee141ba6c21bfa77
[INFO] checking alexa-0.1.2 against try#72eda894eb3548c7ba774079ce0afab42958d4ee for pr-121848-1
[INFO] extracting crate alexa 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate alexa 0.1.2 on toolchain 72eda894eb3548c7ba774079ce0afab42958d4ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alexa 0.1.2
[INFO] finished tweaking crates.io crate alexa 0.1.2
[INFO] tweaked toml for crates.io crate alexa 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3239f213b627a81672813353e6972c0a586062c464a6c3ccaace69634e91461d
[INFO] running `Command { std: "docker" "start" "-a" "3239f213b627a81672813353e6972c0a586062c464a6c3ccaace69634e91461d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3239f213b627a81672813353e6972c0a586062c464a6c3ccaace69634e91461d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3239f213b627a81672813353e6972c0a586062c464a6c3ccaace69634e91461d", kill_on_drop: false }`
[INFO] [stdout] 3239f213b627a81672813353e6972c0a586062c464a6c3ccaace69634e91461d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c92314b2da34a0ad6b8d787ab6d4e5b9b77a57621bad4e1fd0fbfb706ae446cd
[INFO] running `Command { std: "docker" "start" "-a" "c92314b2da34a0ad6b8d787ab6d4e5b9b77a57621bad4e1fd0fbfb706ae446cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]    Compiling syn v0.9.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking cookie v0.2.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling serde_codegen_internals v0.10.0
[INFO] [stderr]    Compiling syntex_pos v0.45.0
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]    Compiling syntex_errors v0.45.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking conduit-mime-types v0.7.3
[INFO] [stderr]     Checking hyper v0.9.18
[INFO] [stderr]    Compiling syntex_syntax v0.45.1
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking iron v0.4.0
[INFO] [stderr]     Checking persistent v0.2.1
[INFO] [stderr]     Checking bodyparser v0.4.1
[INFO] [stderr]    Compiling syntex v0.45.1
[INFO] [stderr]    Compiling serde_codegen v0.8.14
[INFO] [stderr]    Compiling alexa v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `alexa v0.1.2 (/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/alexa-51edeb9e225b9a06/build-script-build` (signal: 6, SIGABRT: process abort signal)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread '<unnamed>' panicked at library/core/src/panicking.rs:156:5:
[INFO] [stderr]   unsafe precondition(s) violated: slice::get_unchecked requires that the index is within the slice
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5560c3d3b6b2 - std::backtrace_rs::backtrace::libunwind::trace::h9c7f94e40162a27c
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x5560c3d3b6b2 - std::backtrace_rs::backtrace::trace_unsynchronized::ha56ed7d3a539b199
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5560c3d3b6b2 - std::sys_common::backtrace::_print_fmt::h2b061112255cbda0
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x5560c3d3b6b2 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd2f62a79c076756d
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x5560c3d5b9dc - core::fmt::rt::Argument::fmt::h3f82fcb0e5df8f82
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x5560c3d5b9dc - core::fmt::write::h205e4aa24bad4cfa
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/fmt/mod.rs:1153:17
[INFO] [stderr]      6:     0x5560c3d3957f - std::io::Write::write_fmt::he97e1f829a4300f2
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/io/mod.rs:1843:15
[INFO] [stderr]      7:     0x5560c3d3b484 - std::sys_common::backtrace::_print::hc96730fdf6f00296
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x5560c3d3b484 - std::sys_common::backtrace::print::h1c9d9bd05b4be363
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x5560c3d3caab - std::panicking::default_hook::{{closure}}::h49c3c76f3668a21c
[INFO] [stderr]     10:     0x5560c3d3c803 - std::panicking::default_hook::h0c2f084c9298debc
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x5560c3d3cf4d - std::panicking::rust_panic_with_hook::h193b3d102883e089
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/panicking.rs:779:13
[INFO] [stderr]     12:     0x5560c3d3cde9 - std::panicking::begin_panic_handler::{{closure}}::h0490fb0ce2a5c0be
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/panicking.rs:649:13
[INFO] [stderr]     13:     0x5560c3d3bb86 - std::sys_common::backtrace::__rust_end_short_backtrace::hba4a3b291ebba6bd
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x5560c3d3cb54 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x5560c399b14a - core::panicking::panic_nounwind_fmt::runtime::h6cdef87b506c7fee
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/panicking.rs:110:18
[INFO] [stderr]     16:     0x5560c399b14a - core::panicking::panic_nounwind_fmt::h9f63256f7e28058f
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/panicking.rs:123:9
[INFO] [stderr]     17:     0x5560c399b1f9 - core::panicking::panic_nounwind::h42a6a4575c500833
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/panicking.rs:156:5
[INFO] [stderr]     18:     0x5560c3b6cd3b - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::precondition_check::hc3c77b86cad191ec
[INFO] [stderr]     19:     0x5560c3b6c814 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked::h634b5b173af8a1c3
[INFO] [stderr]     20:     0x5560c3bf9345 - core::slice::<impl [T]>::get_unchecked::he8e543982954bd69
[INFO] [stderr]     21:     0x5560c3a41d95 - <alloc::vec::Vec<T> as syntex_syntax::util::move_map::MoveMap<T>>::move_flat_map::h151efa6b91dcc043
[INFO] [stderr]     22:     0x5560c3aa4ab5 - syntex_syntax::fold::fold_attrs::h646f55d7e7cfe299
[INFO] [stderr]     23:     0x5560c3ad9e83 - syntex_syntax::fold::noop_fold_item_simple::h89f01faf457d3680
[INFO] [stderr]     24:     0x5560c3c0746f - syntex_syntax::fold::Folder::fold_item_simple::had809ff876dd0ce3
[INFO] [stderr]     25:     0x5560c3ad983f - syntex_syntax::fold::noop_fold_item::{{closure}}::hd0482e5fea46238f
[INFO] [stderr]     26:     0x5560c3ba2908 - syntex_syntax::ptr::P<T>::map::h8fb7d8c0eda9c83b
[INFO] [stderr]     27:     0x5560c3ad97a3 - syntex_syntax::fold::noop_fold_item::hb834a5371f5fbada
[INFO] [stderr]     28:     0x5560c3c18352 - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::{{closure}}::hf83f66b0ad1aa8ed
[INFO] [stderr]     29:     0x5560c3bf8e94 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h096c4c03645fcd3a
[INFO] [stderr]     30:     0x5560c3baedb0 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::next::haa1a213bd7acf15b
[INFO] [stderr]     31:     0x5560c3b8213c - core::ops::function::FnOnce::call_once::h2da6d555b0f7d878
[INFO] [stderr]     32:     0x5560c3c62ad4 - core::iter::adapters::fuse::and_then_or_clear::h37992a6806b4f346
[INFO] [stderr]     33:     0x5560c3c5a83e - <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::hdbb0a85b61c05b62
[INFO] [stderr]     34:     0x5560c3b7f5ce - <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::h40001cac35f174ff
[INFO] [stderr]     35:     0x5560c3b7ed07 - <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::hdfd1f3a1fb684e8b
[INFO] [stderr]     36:     0x5560c3bf024f - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::Extend<T>>::extend::h1db081969629cf8b
[INFO] [stderr]     37:     0x5560c3beda2d - <syntex_syntax::util::small_vector::SmallVector<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h2492c82149e80d80
[INFO] [stderr]     38:     0x5560c3b9059e - core::iter::traits::iterator::Iterator::collect::h73f41ab6ebb1332c
[INFO] [stderr]     39:     0x5560c3c182ee - <syntex_syntax::ext::decorator::MacroExpander as syntex_syntax::fold::Folder>::fold_item::h9137dd756423cb1b
[INFO] [stderr]     40:     0x5560c3ad8dd6 - syntex_syntax::fold::noop_fold_crate::he81902f2509d685e
[INFO] [stderr]     41:     0x5560c3c0729f - syntex_syntax::fold::Folder::fold_crate::h6c9843d4b57166f5
[INFO] [stderr]     42:     0x5560c3c1824c - syntex_syntax::ext::decorator::expand_attributes::h96a0c5c3beccec5e
[INFO] [stderr]     43:     0x5560c3c49d0a - syntex_syntax::ext::expand::MacroExpander::expand_crate::h71076b10abdffec5
[INFO] [stderr]     44:     0x5560c3a15623 - syntex::registry::Registry::expand_crate::hf947743b860f2f95
[INFO] [stderr]     45:     0x5560c399e518 - syntex::registry::Registry::expand::h18666508eebbfdd3
[INFO] [stderr]     46:     0x5560c399bb2e - serde_codegen::expand::{{closure}}::h2c98bf15ac9ca899
[INFO] [stderr]     47:     0x5560c399bb96 - std::sys_common::backtrace::__rust_begin_short_backtrace::h9621ac317ba66028
[INFO] [stderr]     48:     0x5560c399cf95 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hb87f596f386347ed
[INFO] [stderr]     49:     0x5560c399b908 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h5c76dda64a00f29a
[INFO] [stderr]     50:     0x5560c399d0d4 - std::panicking::try::do_call::h8e11c792b7869bca
[INFO] [stderr]     51:     0x5560c399f0eb - __rust_try
[INFO] [stderr]     52:     0x5560c399d058 - std::panicking::try::hba083536527814f7
[INFO] [stderr]     53:     0x5560c399ce10 - std::thread::Builder::spawn_unchecked_::{{closure}}::hf6adae58e4a4d08c
[INFO] [stderr]     54:     0x5560c399d366 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h754ea5e650f4fc83
[INFO] [stderr]     55:     0x5560c3d3f305 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3d2a9b7c225bae7c
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/alloc/src/boxed.rs:2020:9
[INFO] [stderr]     56:     0x5560c3d3f305 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h88b7eadfd697b52d
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/alloc/src/boxed.rs:2020:9
[INFO] [stderr]     57:     0x5560c3d3f305 - std::sys::pal::unix::thread::Thread::new::thread_start::he12a8f4512b172c4
[INFO] [stderr]                                  at /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stderr]     58:     0x7f4c7c0e6ac3 - <unknown>
[INFO] [stderr]     59:     0x7f4c7c177bf4 - __clone
[INFO] [stderr]     60:                0x0 - <unknown>
[INFO] [stderr]   thread caused non-unwinding panic. aborting.
[INFO] running `Command { std: "docker" "inspect" "c92314b2da34a0ad6b8d787ab6d4e5b9b77a57621bad4e1fd0fbfb706ae446cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c92314b2da34a0ad6b8d787ab6d4e5b9b77a57621bad4e1fd0fbfb706ae446cd", kill_on_drop: false }`
[INFO] [stdout] c92314b2da34a0ad6b8d787ab6d4e5b9b77a57621bad4e1fd0fbfb706ae446cd
