[INFO] fetching crate threadgroup 0.1.0...
[INFO] testing threadgroup-0.1.0 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate threadgroup 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate threadgroup 0.1.0
[INFO] finished tweaking crates.io crate threadgroup 0.1.0
[INFO] tweaked toml for crates.io crate threadgroup 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate threadgroup 0.1.0 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bf5db58aaaf83b0c7adbe28c8160b3655979beb06cdd8cf63e7c8af8ff709e7
[INFO] running `Command { std: "docker" "start" "-a" "1bf5db58aaaf83b0c7adbe28c8160b3655979beb06cdd8cf63e7c8af8ff709e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bf5db58aaaf83b0c7adbe28c8160b3655979beb06cdd8cf63e7c8af8ff709e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bf5db58aaaf83b0c7adbe28c8160b3655979beb06cdd8cf63e7c8af8ff709e7", kill_on_drop: false }`
[INFO] [stdout] 1bf5db58aaaf83b0c7adbe28c8160b3655979beb06cdd8cf63e7c8af8ff709e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e230cb0486886bbfa2ddea5a336fc524ed204c294b465dd0796a00165f1f63c
[INFO] running `Command { std: "docker" "start" "-a" "8e230cb0486886bbfa2ddea5a336fc524ed204c294b465dd0796a00165f1f63c", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling threadgroup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "8e230cb0486886bbfa2ddea5a336fc524ed204c294b465dd0796a00165f1f63c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e230cb0486886bbfa2ddea5a336fc524ed204c294b465dd0796a00165f1f63c", kill_on_drop: false }`
[INFO] [stdout] 8e230cb0486886bbfa2ddea5a336fc524ed204c294b465dd0796a00165f1f63c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b861a1358075cc4ddc81d281ba00ae65fb413e96dc3d790b3f0269b840e0255a
[INFO] running `Command { std: "docker" "start" "-a" "b861a1358075cc4ddc81d281ba00ae65fb413e96dc3d790b3f0269b840e0255a", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling threadgroup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "b861a1358075cc4ddc81d281ba00ae65fb413e96dc3d790b3f0269b840e0255a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b861a1358075cc4ddc81d281ba00ae65fb413e96dc3d790b3f0269b840e0255a", kill_on_drop: false }`
[INFO] [stdout] b861a1358075cc4ddc81d281ba00ae65fb413e96dc3d790b3f0269b840e0255a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8060c362a8b1182e40e38891d4a99ca7f6db2dfccde1398d25ca43d968146445
[INFO] running `Command { std: "docker" "start" "-a" "8060c362a8b1182e40e38891d4a99ca7f6db2dfccde1398d25ca43d968146445", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/threadgroup-e35995b198d1d5b5)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::empty_group ... ok
[INFO] [stdout] test tests::basic_join ... ok
[INFO] [stdout] test tests::panic_join ... ok
[INFO] [stdout] test tests::timeout_join ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests threadgroup
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - ThreadGroup<T>::new (line 81) ... ok
[INFO] [stdout] test src/lib.rs - ThreadGroup<T>::join (line 139) ... ok
[INFO] [stdout] test src/lib.rs - ThreadGroup<T>::join_timeout (line 165) ... ok
[INFO] [stdout] test src/lib.rs - ThreadGroup<T>::spawn (line 95) ... ok
[INFO] [stdout] test src/lib.rs - (line 8) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 8) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread '<unnamed>' (173) panicked at src/lib.rs:14:55:
[INFO] [stdout] explicit panic
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x62ce76c74f5a - std[f92b4c606f291077]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x62ce76c74f5a - std[f92b4c606f291077]::backtrace_rs::backtrace::trace_unsynchronized::<std[f92b4c606f291077]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x62ce76c74f5a - std[f92b4c606f291077]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x62ce76c74f5a - <<std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[786f478f706679df]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x62ce76c8599a - <core[786f478f706679df]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x62ce76c8599a - core[786f478f706679df]::fmt::write
[INFO] [stdout]    6:     0x62ce76c78932 - std[f92b4c606f291077]::io::default_write_fmt::<std[f92b4c606f291077]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x62ce76c78932 - <std[f92b4c606f291077]::sys::stdio::unix::Stderr as std[f92b4c606f291077]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x62ce76c5f90f - <std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x62ce76c5f90f - std[f92b4c606f291077]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x62ce76c70b91 - std[f92b4c606f291077]::panicking::default_hook
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x62ce76c70d4b - std[f92b4c606f291077]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x62ce76c5ef2c - std[f92b4c606f291077]::panicking::begin_panic::<&str>::{closure#0}
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:762:9
[INFO] [stdout]   13:     0x62ce76c575e9 - std[f92b4c606f291077]::sys::backtrace::__rust_end_short_backtrace::<std[f92b4c606f291077]::panicking::begin_panic<&str>::{closure#0}, !>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x62ce76c54e50 - std[f92b4c606f291077]::panicking::begin_panic::<&str>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:761:5
[INFO] [stdout]   15:     0x62ce76c39a33 - rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}
[INFO] [stdout]   16:     0x62ce76c379a8 - <threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn::<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}
[INFO] [stdout]   17:     0x62ce76c34036 - std[f92b4c606f291077]::sys::backtrace::__rust_begin_short_backtrace::<<threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}, u32>
[INFO] [stdout]   18:     0x62ce76c38ebb - std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked::<<threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}, u32>::{closure#1}::{closure#0}
[INFO] [stdout]   19:     0x62ce76c3f500 - <core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<<threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}, u32>::{closure#1}::{closure#0}> as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   20:     0x62ce76c36994 - std[f92b4c606f291077]::panicking::catch_unwind::do_call::<core[786f478f706679df]::panic::unwind_safe::AssertUnwindSafe<std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<<threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}, u32>::{closure#1}::{closure#0}>, u32>
[INFO] [stdout]   21:     0x62ce76c3f6eb - __rust_try
[INFO] [stdout]   22:     0x62ce76c386b3 - std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked::<<threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}, u32>::{closure#1}
[INFO] [stdout]   23:     0x62ce76c39b66 - <std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<<threadgroup[7588e4d163dd7f4c]::ThreadGroup<u32>>::spawn<rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0::{closure#1}, u32>::{closure#0}, u32>::{closure#1} as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   24:     0x62ce76c7487f - <alloc[64763625b5a07cdb]::boxed::Box<dyn core[786f478f706679df]::ops::function::FnOnce<(), Output = ()> + core[786f478f706679df]::marker::Send> as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   25:     0x62ce76c7487f - <std[f92b4c606f291077]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   26:     0x788b62f9eaa4 - <unknown>
[INFO] [stdout]   27:     0x788b6302ba64 - clone
[INFO] [stdout]   28:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (171) panicked at src/lib.rs:20:43:
[INFO] [stdout] called `Result::unwrap_err()` on an `Ok` value: 2
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x62ce76c74f5a - std[f92b4c606f291077]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x62ce76c74f5a - std[f92b4c606f291077]::backtrace_rs::backtrace::trace_unsynchronized::<std[f92b4c606f291077]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x62ce76c74f5a - std[f92b4c606f291077]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x62ce76c74f5a - <<std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[786f478f706679df]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x62ce76c8599a - <core[786f478f706679df]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x62ce76c8599a - core[786f478f706679df]::fmt::write
[INFO] [stdout]    6:     0x62ce76c78932 - std[f92b4c606f291077]::io::default_write_fmt::<std[f92b4c606f291077]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x62ce76c78932 - <std[f92b4c606f291077]::sys::stdio::unix::Stderr as std[f92b4c606f291077]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x62ce76c5f90f - <std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x62ce76c5f90f - std[f92b4c606f291077]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x62ce76c70b91 - std[f92b4c606f291077]::panicking::default_hook
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x62ce76c70d4b - std[f92b4c606f291077]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x62ce76c5f9c8 - std[f92b4c606f291077]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x62ce76c57609 - std[f92b4c606f291077]::sys::backtrace::__rust_end_short_backtrace::<std[f92b4c606f291077]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x62ce76c601ad - __rustc[8241495c18a89d70]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x62ce76c860cc - core[786f478f706679df]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x62ce76c85ea2 - core[786f478f706679df]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x62ce76c39ef0 - <core[786f478f706679df]::result::Result<u32, threadgroup[7588e4d163dd7f4c]::JoinError>>::unwrap_err
[INFO] [stdout]   18:     0x62ce76c3df4f - rust_out[ed1579ae55fdba85]::main::_doctest_main_src_lib_rs_8_0
[INFO] [stdout]   19:     0x62ce76c39b76 - rust_out[ed1579ae55fdba85]::main
[INFO] [stdout]   20:     0x62ce76c3f583 - <fn() as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   21:     0x62ce76c33ff6 - std[f92b4c606f291077]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   22:     0x62ce76c37a19 - std[f92b4c606f291077]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   23:     0x62ce76c70234 - <&dyn core[786f478f706679df]::ops::function::Fn<(), Output = i32> + core[786f478f706679df]::marker::Sync + core[786f478f706679df]::panic::unwind_safe::RefUnwindSafe as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   24:     0x62ce76c70234 - std[f92b4c606f291077]::panicking::catch_unwind::do_call::<&dyn core[786f478f706679df]::ops::function::Fn<(), Output = i32> + core[786f478f706679df]::marker::Sync + core[786f478f706679df]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:581:40
[INFO] [stdout]   25:     0x62ce76c70234 - std[f92b4c606f291077]::panicking::catch_unwind::<i32, &dyn core[786f478f706679df]::ops::function::Fn<(), Output = i32> + core[786f478f706679df]::marker::Sync + core[786f478f706679df]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:544:19
[INFO] [stdout]   26:     0x62ce76c70234 - std[f92b4c606f291077]::panic::catch_unwind::<&dyn core[786f478f706679df]::ops::function::Fn<(), Output = i32> + core[786f478f706679df]::marker::Sync + core[786f478f706679df]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panic.rs:359:14
[INFO] [stdout]   27:     0x62ce76c70234 - std[f92b4c606f291077]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/rt.rs:175:24
[INFO] [stdout]   28:     0x62ce76c70234 - std[f92b4c606f291077]::panicking::catch_unwind::do_call::<std[f92b4c606f291077]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x62ce76c70234 - std[f92b4c606f291077]::panicking::catch_unwind::<isize, std[f92b4c606f291077]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x62ce76c70234 - std[f92b4c606f291077]::panic::catch_unwind::<std[f92b4c606f291077]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x62ce76c70234 - std[f92b4c606f291077]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/library/std/src/rt.rs:171:5
[INFO] [stdout]   32:     0x62ce76c33f71 - std[f92b4c606f291077]::rt::lang_start::<()>
[INFO] [stdout]   33:     0x62ce76c3f725 - main
[INFO] [stdout]   34:     0x788b62f2c1ca - <unknown>
[INFO] [stdout]   35:     0x788b62f2c28b - __libc_start_main
[INFO] [stdout]   36:     0x62ce76c31ec5 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 8)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.73s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "8060c362a8b1182e40e38891d4a99ca7f6db2dfccde1398d25ca43d968146445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8060c362a8b1182e40e38891d4a99ca7f6db2dfccde1398d25ca43d968146445", kill_on_drop: false }`
[INFO] [stdout] 8060c362a8b1182e40e38891d4a99ca7f6db2dfccde1398d25ca43d968146445
