[INFO] updating cached repository https://github.com/PaulGrandperrin/playground [INFO] running `Command { std: "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", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 572ff41ccdfa72771a37fd9ab89f37e9b5451041 [INFO] documenting PaulGrandperrin/playground against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/PaulGrandperrin/playground on toolchain 394e1b40d264aa6928811919c1124fa248e7d802 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/PaulGrandperrin/playground [INFO] finished tweaking git repo https://github.com/PaulGrandperrin/playground [INFO] tweaked toml for git repo https://github.com/PaulGrandperrin/playground written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/PaulGrandperrin/playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 79b97c37dfc47290b8143bcdf3a09b6c0695b53665a51a52c7ab15674bb25a98 [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" "79b97c37dfc47290b8143bcdf3a09b6c0695b53665a51a52c7ab15674bb25a98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "79b97c37dfc47290b8143bcdf3a09b6c0695b53665a51a52c7ab15674bb25a98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "79b97c37dfc47290b8143bcdf3a09b6c0695b53665a51a52c7ab15674bb25a98", kill_on_drop: false }` [INFO] [stdout] 79b97c37dfc47290b8143bcdf3a09b6c0695b53665a51a52c7ab15674bb25a98 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "RUSTDOCFLAGS=--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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e636ee4b7521ff68ac54338d6bcf01732a3d06581e36b42c56d1045e96562920 [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" "e636ee4b7521ff68ac54338d6bcf01732a3d06581e36b42c56d1045e96562920", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.55 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Compiling cc v1.0.37 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling serde v1.0.91 [INFO] [stderr] Checking either v1.5.2 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling backtrace v0.3.26 [INFO] [stderr] Compiling num-iter v0.1.39 [INFO] [stderr] Compiling bincode v1.1.4 [INFO] [stderr] Checking itertools v0.8.0 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking dirs v1.0.5 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Checking term v0.5.2 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking num-complex v0.2.1 [INFO] [stderr] Checking num-bigint v0.2.2 [INFO] [stderr] Checking color-backtrace v0.1.3 [INFO] [stderr] Checking num-rational v0.2.1 [INFO] [stderr] Checking num v0.2.0 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Compiling serde_derive v1.0.91 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking exitfailure v0.5.1 [INFO] [stderr] Documenting playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/non_volatile/object/tree/internal_node.rs:45:42 [INFO] [stdout] | [INFO] [stdout] 45 | _p: std::marker::PhantomData<(K)>, [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: internal compiler error: unexpected predicate Binder(TraitPredicate(< as std::convert::TryFrom>::Error as std::fmt::Debug>)) on opaque type [INFO] [stdout] --> src/non_volatile/object/any_rc_object.rs:34:52 [INFO] [stdout] | [INFO] [stdout] 34 | as TryFrom>::Error: Debug; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: delayed at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/librustc_session/session.rs:436:27 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: internal compiler error: unexpected predicate Binder(TraitPredicate( as std::convert::TryFrom>)) on opaque type [INFO] [stdout] --> src/non_volatile/object/any_rc_object.rs:33:19 [INFO] [stdout] | [INFO] [stdout] 33 | Rc: TryFrom, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: delayed at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/librustc_session/session.rs:436:27 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: internal compiler error: unexpected predicate Binder(TraitPredicate( as std::marker::Sized>)) on opaque type [INFO] [stdout] | [INFO] [stdout] = note: delayed at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/librustc_session/session.rs:436:27 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: internal compiler error: unexpected predicate Binder(TraitPredicate(>>)) on opaque type [INFO] [stdout] --> src/non_volatile/object/any_rc_object.rs:32:22 [INFO] [stdout] | [INFO] [stdout] 32 | AnyRcObject: From>, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: delayed at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/librustc_session/session.rs:436:27 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', src/librustc_errors/lib.rs:367:17 [INFO] [stdout] error: internal compiler error: unexpected predicate Binder(TraitPredicate()) on opaque type [INFO] [stdout] | [INFO] [stdout] = note: delayed at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/librustc_session/session.rs:436:27 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] stack backtrace: [INFO] [stdout] error: internal compiler error: unexpected predicate Binder(TraitPredicate(>)) on opaque type [INFO] [stdout] --> src/non_volatile/object/any_rc_object.rs:31:77 [INFO] [stdout] | [INFO] [stdout] 31 | pub trait Object = Serializable + ConstObjType + Default where AnyRcObject: From, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: delayed at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/librustc_session/session.rs:436:27 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 0: 0x7f6d5dfc1755 - backtrace::backtrace::libunwind::trace::h34afbfad7fd770fc [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x7f6d5dfc1755 - backtrace::backtrace::trace_unsynchronized::h460d522b1619a600 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7f6d5dfc1755 - std::sys_common::backtrace::_print_fmt::ha45fac10086813b4 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x7f6d5dfc1755 - ::fmt::hde84f63fcfd0e6de [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x7f6d5dffed9c - core::fmt::write::h540ac4a6a1232abc [INFO] [stderr] at src/libcore/fmt/mod.rs:1076 [INFO] [stderr] 5: 0x7f6d5dfb3b93 - std::io::Write::write_fmt::hc344eafd6e850b4d [INFO] [stderr] at src/libstd/io/mod.rs:1537 [INFO] [stderr] 6: 0x7f6d5dfc6730 - std::sys_common::backtrace::_print::h4db88ff15cb5d61d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x7f6d5dfc6730 - std::sys_common::backtrace::print::h5fc39e1b1f610bd3 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x7f6d5dfc6730 - std::panicking::default_hook::{{closure}}::h59e55edacb1d974a [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 9: 0x7f6d5dfc647c - std::panicking::default_hook::heee4c8016dfbf328 [INFO] [stderr] at src/libstd/panicking.rs:217 [INFO] [stderr] 10: 0x7f6d4ee34fd6 - as core::ops::function::Fn>::call::h5324ae69ceffb94b [INFO] [stderr] at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/liballoc/boxed.rs:1092 [INFO] [stderr] 11: 0x7f6d4ee443e5 - proc_macro::bridge::client::::enter::{{closure}}::{{closure}}::h4fa8b24da6f96a06 [INFO] [stderr] at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/libproc_macro/bridge/client.rs:318 [INFO] [stderr] 12: 0x7f6d5dfc6ea8 - std::panicking::rust_panic_with_hook::h8405b6301c79fb5a [INFO] [stderr] at src/libstd/panicking.rs:524 [INFO] [stderr] 13: 0x7f6d612cf2ee - std::panicking::begin_panic::he8f93de0053c1998 [INFO] [stderr] 14: 0x7f6d613030c2 - ::drop::h3711f7c2a10defd2 [INFO] [stderr] 15: 0x5625cf9881e6 - core::ptr::drop_in_place::hbb12e1c441aeea6e [INFO] [stderr] 16: 0x5625cf98ad01 - core::ptr::drop_in_place::hf2994b6e47360d11 [INFO] [stderr] 17: 0x5625cf993186 - as core::ops::drop::Drop>::drop::hb2ef26bc81b0aa4e [INFO] [stderr] 18: 0x5625cfc4a95d - core::ptr::drop_in_place::hf0c307f29b32f1ca [INFO] [stderr] 19: 0x5625cfc26d49 - rustc_interface::interface::run_compiler_in_existing_thread_pool::h9841dcf32412e1cb [INFO] [stderr] 20: 0x5625cfb6f0ad - as core::ops::function::FnOnce<()>>::call_once::hd1a838da0d19664c [INFO] [stderr] 21: 0x5625cfb129a2 - rustc_driver::catch_fatal_errors::haf1aad4c4563495f [INFO] [stderr] 22: 0x5625cf9af589 - rustdoc::main_options::h30614de540e3aa75 [INFO] [stderr] 23: 0x5625cf9ed9c7 - scoped_tls::ScopedKey::set::h5c5ea972a22e827e [INFO] [stderr] 24: 0x5625cfc58de2 - rustc_ast::attr::with_globals::ha3f27714d834a354 [INFO] [stderr] 25: 0x5625cfa07610 - std::sys_common::backtrace::__rust_begin_short_backtrace::hacb17662e510f910 [INFO] [stderr] 26: 0x5625cfb1513e - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd98c265b256887e4 [INFO] [stderr] 27: 0x7f6d5dfd66aa - as core::ops::function::FnOnce>::call_once::h13d34828db364579 [INFO] [stderr] at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/liballoc/boxed.rs:1078 [INFO] [stderr] 28: 0x7f6d5dfd66aa - as core::ops::function::FnOnce>::call_once::hd51b619e0f884abf [INFO] [stderr] at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/liballoc/boxed.rs:1078 [INFO] [stderr] 29: 0x7f6d5dfd66aa - std::sys::unix::thread::Thread::new::thread_start::h02c6e34c2c73f344 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:87 [INFO] [stderr] 30: 0x7f6d5df18609 - start_thread [INFO] [stderr] 31: 0x7f6d5de22103 - __clone [INFO] [stderr] 32: 0x0 - [INFO] [stderr] error: Could not document `playground`. [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name playground src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-bd295e30813a048e.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-e761a42046cfe242.rmeta --extern color_backtrace=/opt/rustwide/target/debug/deps/libcolor_backtrace-2cb268254ec42b14.rmeta --extern exitfailure=/opt/rustwide/target/debug/deps/libexitfailure-2e006c4e8d8b3c9e.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-f5d037397340baec.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-2fc0570fbe21ba7b.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-40fea3cc115d0e18.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-941d04c58cdd7e41.rmeta --cap-lints=forbid` (exit code: 1) [INFO] running `Command { std: "docker" "inspect" "e636ee4b7521ff68ac54338d6bcf01732a3d06581e36b42c56d1045e96562920", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e636ee4b7521ff68ac54338d6bcf01732a3d06581e36b42c56d1045e96562920", kill_on_drop: false }` [INFO] [stdout] e636ee4b7521ff68ac54338d6bcf01732a3d06581e36b42c56d1045e96562920