[INFO] updating cached repository https://github.com/fabricereix/sample-rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cff7f29c21dd22aee6abcff4e1c691955a2fd891 [INFO] checking fabricereix/sample-rust against master#d939f708d960161d23b964309ba68ff207fc0ead for pr-70087 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabricereix%2Fsample-rust" "/workspace/builds/worker-11/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fabricereix/sample-rust on toolchain d939f708d960161d23b964309ba68ff207fc0ead [INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/fabricereix/sample-rust [INFO] removed 0 missing tests [INFO] finished tweaking git repo https://github.com/fabricereix/sample-rust [INFO] tweaked toml for git repo https://github.com/fabricereix/sample-rust written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/fabricereix/sample-rust already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-11/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 61b78b1058bb1284240886dee00ee7b252069b8b55ab95ce54d1b3a4dc413d8d [INFO] running `"docker" "start" "-a" "61b78b1058bb1284240886dee00ee7b252069b8b55ab95ce54d1b3a4dc413d8d"` [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Compiling libxml v0.2.13 [INFO] [stderr] Checking rand_core v0.2.2 [INFO] [stderr] Checking parking_lot_core v0.3.1 [INFO] [stderr] Checking streaming-stats v0.2.3 [INFO] [stderr] Checking bstr v0.2.12 [INFO] [stderr] Checking docopt v1.1.0 [INFO] [stderr] Checking quickcheck v0.7.2 [INFO] [stderr] Checking crossbeam-epoch v0.6.1 [INFO] [stderr] Checking parking_lot v0.6.4 [INFO] [stderr] Checking crossbeam-channel v0.2.6 [INFO] [stderr] Checking csv v1.1.3 [INFO] [stderr] thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', src/librustc/hir/mod.rs:81:37 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7ffa2f3210b4 - backtrace::backtrace::libunwind::trace::hdbfb90b3ac3ad82c [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x7ffa2f3210b4 - backtrace::backtrace::trace_unsynchronized::hdc2d8de557dbdcaf [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7ffa2f3210b4 - std::sys_common::backtrace::_print_fmt::hc847b4cbd733969c [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x7ffa2f3210b4 - ::fmt::h1834f0d5f0f485d9 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x7ffa2f359acc - core::fmt::write::h6932942104d5f1ae [INFO] [stderr] at src/libcore/fmt/mod.rs:1069 [INFO] [stderr] 5: 0x7ffa2f312de3 - std::io::Write::write_fmt::h6ea75dc393077354 [INFO] [stderr] at src/libstd/io/mod.rs:1427 [INFO] [stderr] 6: 0x7ffa2f325f25 - std::sys_common::backtrace::_print::hbdd2af06305a234c [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x7ffa2f325f25 - std::sys_common::backtrace::print::hfa2e5bb1407a0009 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x7ffa2f325f25 - std::panicking::default_hook::{{closure}}::h4196b1a9c9da64a2 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 9: 0x7ffa2f325c72 - std::panicking::default_hook::h853dd04629d084b0 [INFO] [stderr] at src/libstd/panicking.rs:218 [INFO] [stderr] 10: 0x7ffa2f984573 - rustc_driver::report_ice::h37110b2df4d302f9 [INFO] [stderr] 11: 0x7ffa2f3266a5 - std::panicking::rust_panic_with_hook::h06766489222c5b1f [INFO] [stderr] at src/libstd/panicking.rs:515 [INFO] [stderr] 12: 0x7ffa2f3261bb - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:419 [INFO] [stderr] 13: 0x7ffa2f356761 - core::panicking::panic_fmt::h70f73dd0c53f6a1b [INFO] [stderr] at src/libcore/panicking.rs:111 [INFO] [stderr] 14: 0x7ffa2f3566ad - core::panicking::panic::h8949d295691d9372 [INFO] [stderr] at src/libcore/panicking.rs:54 [INFO] [stderr] 15: 0x7ffa31d15662 - core::ops::function::FnOnce::call_once::h12065f39f0b6311b [INFO] [stderr] 16: 0x7ffa31acba4b - rustc::ty::query::::compute::h10dbd539d40032dc [INFO] [stderr] 17: 0x7ffa31ebad46 - rustc::dep_graph::graph::DepGraph::with_task_impl::h22d1ca3dfce40383 [INFO] [stderr] 18: 0x7ffa3199e248 - rustc::ty::query::plumbing::::get_query::h12f8870478f2960f [INFO] [stderr] 19: 0x7ffa31f39752 - rustc::hir::map::Map::get_entry::hf2f179e059dc5b6b [INFO] [stderr] 20: 0x7ffa31f3b203 - rustc::hir::map::Map::find::heb2dc2f1416b8ea3 [INFO] [stderr] 21: 0x7ffa3070ccc6 - rustc_passes::dead::MarkSymbolVisitor::check_def_id::h3bcbce5fca999079 [INFO] [stderr] 22: 0x7ffa3067473b - rustc_hir::intravisit::walk_item::hfcde566590e287e5 [INFO] [stderr] 23: 0x7ffa3070f66a - rustc_passes::dead::check_crate::h13e54a581f9d47cc [INFO] [stderr] 24: 0x7ffa2fb76650 - rustc_session::utils::::time::h2458cf43f4082c3e [INFO] [stderr] 25: 0x7ffa2fbe4e43 - rustc_interface::passes::analysis::{{closure}}::{{closure}}::hdcc55c3c5716b148 [INFO] [stderr] 26: 0x7ffa2fb78d94 - rustc_session::utils::::time::h603ac2a75c23020f [INFO] [stderr] 27: 0x7ffa2fc0fcb4 - rustc_interface::passes::analysis::hb2fbc780c128cb58 [INFO] [stderr] 28: 0x7ffa2f990bc7 - rustc::ty::query::__query_compute::analysis::hc470241115f763ae [INFO] [stderr] 29: 0x7ffa2f9f9b1e - rustc::dep_graph::graph::DepGraph::with_task_impl::h8145b42b895db173 [INFO] [stderr] 30: 0x7ffa2f9d09a4 - rustc::ty::query::plumbing::::get_query::h425ea7995d3cc545 [INFO] [stderr] 31: 0x7ffa2fa08b97 - rustc::ty::context::tls::enter_global::h11e9f6894fc852b9 [INFO] [stderr] 32: 0x7ffa2f9d9184 - rustc_interface::interface::run_compiler_in_existing_thread_pool::ha8f28fc7f7f9165a [INFO] [stderr] 33: 0x7ffa2f98c36c - std::sys_common::backtrace::__rust_begin_short_backtrace::h30918276b81a492f [INFO] [stderr] 34: 0x7ffa2f9dba0e - core::ops::function::FnOnce::call_once{{vtable.shim}}::he7fca40d43338451 [INFO] [stderr] 35: 0x7ffa2f30283f - as core::ops::function::FnOnce>::call_once::hbe1510c05c206603 [INFO] [stderr] at /rustc/d939f708d960161d23b964309ba68ff207fc0ead/src/liballoc/boxed.rs:1017 [INFO] [stderr] 36: 0x7ffa2f3361fd - as core::ops::function::FnOnce>::call_once::hfa7747e768ca5f70 [INFO] [stderr] at /rustc/d939f708d960161d23b964309ba68ff207fc0ead/src/liballoc/boxed.rs:1017 [INFO] [stderr] 37: 0x7ffa2f3361fd - std::sys_common::thread::start_thread::h82b98ca7eaf2b310 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 38: 0x7ffa2f3361fd - std::sys::unix::thread::Thread::new::thread_start::h62648d7fb5a14d76 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:80 [INFO] [stderr] 39: 0x7ffa2f09c6db - start_thread [INFO] [stderr] 40: 0x7ffa2e9b988f - __clone [INFO] [stderr] 41: 0x0 - [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/blob/master/CONTRIBUTING.md#bug-reports [INFO] [stderr] [INFO] [stderr] note: rustc 1.44.0-nightly (d939f708d 2020-03-18) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -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] #0 [hir_owner] processing `regex` [INFO] [stderr] #1 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `docopt`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "61b78b1058bb1284240886dee00ee7b252069b8b55ab95ce54d1b3a4dc413d8d"` [INFO] running `"docker" "rm" "-f" "61b78b1058bb1284240886dee00ee7b252069b8b55ab95ce54d1b3a4dc413d8d"` [INFO] [stdout] 61b78b1058bb1284240886dee00ee7b252069b8b55ab95ce54d1b3a4dc413d8d