[INFO] cloning repository https://github.com/lzanini/mdbook-katex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lzanini/mdbook-katex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flzanini%2Fmdbook-katex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flzanini%2Fmdbook-katex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 775223ce88700bc7238bcaf73f9c073b0565c624
[INFO] testing lzanini/mdbook-katex against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flzanini%2Fmdbook-katex" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lzanini/mdbook-katex on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lzanini/mdbook-katex
[INFO] finished tweaking git repo https://github.com/lzanini/mdbook-katex
[INFO] tweaked toml for git repo https://github.com/lzanini/mdbook-katex written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/lzanini/mdbook-katex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded open v1.4.0
[INFO] [stderr]   Downloaded gitignore v1.0.7
[INFO] [stderr]   Downloaded ammonia v3.1.0
[INFO] [stderr]   Downloaded tokio-tungstenite v0.11.0
[INFO] [stderr]   Downloaded xml5ever v0.16.1
[INFO] [stderr]   Downloaded markup5ever_rcdom v0.1.0
[INFO] [stderr]   Downloaded quick-js v0.4.0
[INFO] [stderr]   Downloaded katex v0.3.2
[INFO] [stderr]   Downloaded elasticlunr-rs v2.3.9
[INFO] [stderr]   Downloaded warp v0.2.5
[INFO] [stderr]   Downloaded handlebars v3.5.1
[INFO] [stderr]   Downloaded mdbook v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 586f089311f8ce5f1b3b4096900ee4988816b4ac4cf82c57cceb55ff2b488d97
[INFO] running `Command { std: "docker" "start" "-a" "586f089311f8ce5f1b3b4096900ee4988816b4ac4cf82c57cceb55ff2b488d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "586f089311f8ce5f1b3b4096900ee4988816b4ac4cf82c57cceb55ff2b488d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "586f089311f8ce5f1b3b4096900ee4988816b4ac4cf82c57cceb55ff2b488d97", kill_on_drop: false }`
[INFO] [stdout] 586f089311f8ce5f1b3b4096900ee4988816b4ac4cf82c57cceb55ff2b488d97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3a49f60aecf2ccd91cfa5512a00bbbd5c8613b6c9dd047251e9c544d529876a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d3a49f60aecf2ccd91cfa5512a00bbbd5c8613b6c9dd047251e9c544d529876a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling tokio-macros v0.2.6
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[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling handlebars v3.5.1
[INFO] [stderr]    Compiling tokio v0.2.23
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling pin-project v1.0.1
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.9
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling tokio-tungstenite v0.11.0
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling markup5ever_rcdom v0.1.0
[INFO] [stderr]    Compiling ammonia v3.1.0
[INFO] [stderr]    Compiling hyper v0.13.9
[INFO] [stderr]    Compiling warp v0.2.5
[INFO] [stderr]    Compiling mdbook v0.4.4
[INFO] [stdout] error: internal compiler error: unexpected concrete region in borrowck: ReStatic
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.2.5/src/filters/sse.rs:457:5
[INFO] [stdout]     |
[INFO] [stdout] 457 | /     pub fn stream<S>(
[INFO] [stdout] 458 | |         self,
[INFO] [stdout] 459 | |         event_stream: S,
[INFO] [stdout] 460 | |     ) -> impl TryStream<
[INFO] [stdout] ...   |
[INFO] [stdout] 476 | |         }
[INFO] [stdout] 477 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: delayed at compiler/rustc_mir/src/borrow_check/region_infer/opaque_types.rs:87:44
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: internal compiler error: unexpected concrete region in borrowck: ReStatic
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.2.5/src/filters/sse.rs:492:1
[INFO] [stdout]     |
[INFO] [stdout] 492 | / pub fn keep<S>(
[INFO] [stdout] 493 | |     event_stream: S,
[INFO] [stdout] 494 | |     keep_interval: impl Into<Option<Duration>>,
[INFO] [stdout] 495 | | ) -> impl TryStream<
[INFO] [stdout] ...   |
[INFO] [stdout] 514 | |     }
[INFO] [stdout] 515 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: delayed at compiler/rustc_mir/src/borrow_check/region_infer/opaque_types.rs:87:44
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', compiler/rustc_errors/src/lib.rs:1050:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f4cd41eb090 - std::backtrace_rs::backtrace::libunwind::trace::h99dbb39dca18857d
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]    1:     0x7f4cd41eb090 - std::backtrace_rs::backtrace::trace_unsynchronized::h832861927e9cfedf
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7f4cd41eb090 - std::sys_common::backtrace::_print_fmt::h3d18154c77dcf310
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7f4cd41eb090 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he312f4ad5b9bb346
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7f4cd4258cfc - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]    5:     0x7f4cd41dc975 - std::io::Write::write_fmt::h6aced00850e8186f
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]    6:     0x7f4cd41eedab - std::sys_common::backtrace::_print::h65d996766de40da4
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7f4cd41eedab - std::sys_common::backtrace::print::h40df9727e635f303
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7f4cd41eedab - std::panicking::default_hook::{{closure}}::hd2da4327dea91a51
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7f4cd41ee881 - std::panicking::default_hook::h3d55120ad6ada158
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:225:9
[INFO] [stderr]   10:     0x7f4cd49cc901 - rustc_driver::DEFAULT_HOOK::{{closure}}::{{closure}}::h98690b446fb8b04c
[INFO] [stderr]   11:     0x7f4cc513a9b3 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h794e40edc9d6b209
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1586:9
[INFO] [stderr]   12:     0x7f4cc5128c0a - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::h78aa7892fc14a38d
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/proc_macro/src/bridge/client.rs:320:21
[INFO] [stderr]   13:     0x7f4cd41ef5d9 - std::panicking::rust_panic_with_hook::hf85dd0bb545e3b55
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:626:17
[INFO] [stderr]   14:     0x7f4cd41ef097 - std::panicking::begin_panic_handler::{{closure}}::h736ae969434da9fa
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:519:13
[INFO] [stderr]   15:     0x7f4cd41eb56c - std::sys_common::backtrace::__rust_end_short_backtrace::h6133bb80b1d6c3e0
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]   16:     0x7f4cd41eeff9 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:515:5
[INFO] [stderr]   17:     0x7f4cd41b7feb - std::panicking::begin_panic_fmt::hf70e90a601287d8b
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:457:5
[INFO] [stderr]   18:     0x7f4cd6e1da19 - rustc_errors::HandlerInner::flush_delayed::h400415fe09e32e42
[INFO] [stderr]   19:     0x7f4cd6e1c47d - <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop::h99b093f7064b7696
[INFO] [stderr]   20:     0x7f4cd64d50c6 - core::ptr::drop_in_place<rustc_session::parse::ParseSess>::hf782bb3707a77e2d
[INFO] [stderr]   21:     0x7f4cd64d6f2e - <alloc::rc::Rc<T> as core::ops::drop::Drop>::drop::h22504b7a2bf4f3e1
[INFO] [stderr]   22:     0x7f4cd64ab57d - core::ptr::drop_in_place<rustc_interface::interface::Compiler>::h04cee182ac6141b7
[INFO] [stderr]   23:     0x7f4cd64aacc3 - rustc_span::with_source_map::h35aa4a6792e2f0de
[INFO] [stderr]   24:     0x7f4cd64bc39a - rustc_interface::interface::create_compiler_and_run::h600b31664ea7498c
[INFO] [stderr]   25:     0x7f4cd64aec79 - scoped_tls::ScopedKey<T>::set::h95fded8ea1ce829a
[INFO] [stderr]   26:     0x7f4cd64ab0ba - std::sys_common::backtrace::__rust_begin_short_backtrace::hcb9f52ef891273be
[INFO] [stderr]   27:     0x7f4cd64aa3a5 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7d639d5804de8241
[INFO] [stderr]   28:     0x7f4cd41fbb67 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h09f167e08fc945ff
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stderr]   29:     0x7f4cd41fbb67 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf814fe85eeb118e0
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stderr]   30:     0x7f4cd41fbb67 - std::sys::unix::thread::Thread::new::thread_start::hb71b17934c5f5e68
[INFO] [stderr]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys/unix/thread.rs:91:17
[INFO] [stderr]   31:     0x7f4cd4117609 - start_thread
[INFO] [stderr]   32:     0x7f4cd402b293 - clone
[INFO] [stderr]   33:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: internal compiler error: unexpected panic
[INFO] [stderr] 
[INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.56.0-nightly (d2e9fff28 2021-07-28) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type lib
[INFO] [stderr] 
[INFO] [stderr] note: some of the compiler flags provided by cargo are hidden
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] end of query stack
[INFO] [stderr] error: could not compile `warp`
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d3a49f60aecf2ccd91cfa5512a00bbbd5c8613b6c9dd047251e9c544d529876a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3a49f60aecf2ccd91cfa5512a00bbbd5c8613b6c9dd047251e9c544d529876a", kill_on_drop: false }`
[INFO] [stdout] d3a49f60aecf2ccd91cfa5512a00bbbd5c8613b6c9dd047251e9c544d529876a