[INFO] fetching crate ensemble-discovery 0.1.0...
[INFO] testing ensemble-discovery-0.1.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate ensemble-discovery 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate ensemble-discovery 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ensemble-discovery 0.1.0
[INFO] tweaked toml for crates.io crate ensemble-discovery 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ensemble-discovery 0.1.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ensemble-discovery 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283
[INFO] running `Command { std: "docker" "start" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling ensemble-discovery v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling ensemble-discovery v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/ensemble_discovery-18326ff181e20c4f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_delete_nonexistent_port_file ... ok
[INFO] [stdout] test tests::test_is_port_bound ... ok
[INFO] [stdout] test tests::test_write_and_read_port_file ... ok
[INFO] [stdout] test tests::test_override_takes_precedence_over_env ... ok
[INFO] [stderr]      Running tests/discovery_tests.rs (/opt/rustwide/target/release/deps/discovery_tests-ef494b8610dfa506)
[INFO] [stdout] test tests::test_set_and_clear_override ... ok
[INFO] [stdout] test tests::test_read_malformed_port_file ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test port_file_path_override ... ok
[INFO] [stdout] test is_port_bound_with_listener ... ok
[INFO] [stdout] test write_read_delete_cycle ... ok
[INFO] [stdout] test malformed_port_file ... ok
[INFO] [stdout] test port_file_path_linux_xdg ... ok
[INFO] [stdout] test port_file_path_linux_fallback ... FAILED
[INFO] [stdout] test stale_port_file_detection ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- port_file_path_linux_fallback stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'port_file_path_linux_fallback' (169) panicked at tests/discovery_tests.rs:101:5:
[INFO] [stdout] assertion failed: path.starts_with("/tmp/ensemble-hub-")
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b47e5a1d991 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b47e5a328fa - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b47e5a2214c - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b47e59f7c26 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b47e5a15209 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b47e59ae420 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b47e5a153c2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b47e59f7d04 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b47e59f0569 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b47e59f8d9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b47e5a3302c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b47e5a32ff2 - core[df12db4294e9bfd3]::panicking::panic
[INFO] [stdout]   12:     0x5b47e59a15fa - <discovery_tests[8765f094f20eef74]::port_file_path_linux_fallback::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   13:     0x5b47e59a170b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   14:     0x5b47e59aed75 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   15:     0x5b47e59a8634 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   16:     0x5b47e59b1ed2 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   17:     0x5b47e5a1c749 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   18:     0x7eaea493edfa - <unknown>
[INFO] [stdout]   19:     0x7eaea49d23d4 - clone
[INFO] [stdout]   20:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- stale_port_file_detection stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'stale_port_file_detection' (172) panicked at tests/discovery_tests.rs:36:34:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: PoisonError { .. }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b47e5a1d991 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b47e5a328fa - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b47e5a2214c - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b47e59f7c26 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b47e5a15209 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b47e59ae420 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b47e5a153c2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b47e59f7cd2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b47e59f0569 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b47e59f8d9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b47e5a3302c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b47e5a32e02 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b47e59a115d - <discovery_tests[8765f094f20eef74]::stale_port_file_detection::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   13:     0x5b47e59a170b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   14:     0x5b47e59aed75 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   15:     0x5b47e59a8634 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   16:     0x5b47e59b1ed2 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   17:     0x5b47e5a1c749 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   18:     0x7eaea493edfa - <unknown>
[INFO] [stdout]   19:     0x7eaea49d23d4 - clone
[INFO] [stdout]   20:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     port_file_path_linux_fallback
[INFO] [stdout]     stale_port_file_detection
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test discovery_tests`
[INFO] running `Command { std: "docker" "inspect" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283", kill_on_drop: false }`
[INFO] [stdout] 7c234661b334a8fb4f83a7651ab81017b8b2d3586889c74a8fe87e8117366283
