[INFO] fetching crate futex_channel 0.0.0...
[INFO] testing futex_channel-0.0.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate futex_channel 0.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate futex_channel 0.0.0
[INFO] finished tweaking crates.io crate futex_channel 0.0.0
[INFO] tweaked toml for crates.io crate futex_channel 0.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate futex_channel 0.0.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to highest compatible versions
[INFO] [stderr]       Adding linux-futex v0.1.2 (available: v1.0.0)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linux-futex v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd
[INFO] running `Command { std: "docker" "start" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", 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" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd" "/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" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", 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" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux-futex v0.1.2
[INFO] [stderr]    Compiling futex_channel v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `push_front` is never used
[INFO] [stdout]   --> src/inner.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Inner<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub(crate) fn push_front(&self, obj: T) -> AppendResult {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", 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" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd" "/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 num_cpus v1.17.0
[INFO] [stdout] warning: method `push_front` is never used
[INFO] [stdout]   --> src/inner.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Inner<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub(crate) fn push_front(&self, obj: T) -> AppendResult {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling futex_channel v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 2.51s
[INFO] running `Command { std: "docker" "inspect" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", 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" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: method `push_front` is never used
[INFO] [stderr]   --> src/inner.rs:65:19
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl<T> Inner<T> {
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 65 |     pub(crate) fn push_front(&self, obj: T) -> AppendResult {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `futex_channel` (lib) generated 1 warning
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/futex_channel-33dac3f52cdb1cdf)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test inner::tests::pop_front_empty ... ok
[INFO] [stdout] test inner::tests::append ... ok
[INFO] [stdout] test inner::tests::pass_three_elements_fifo ... ok
[INFO] [stdout] test inner::tests::append_pop_front_empty ... ok
[INFO] [stdout] test inner::tests::pass_three_elements ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::single_inserter ... FAILED
[INFO] [stdout] test tests::multiple_inserter_while_pulling ... FAILED
[INFO] [stdout] test tests::multiple_inserter has been running for over 60 seconds
[INFO] [stdout] test tests::multiple_inserter ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::single_inserter stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::single_inserter' (208) panicked at src/lib.rs:92:13:
[INFO] [stdout] Err(Empty)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x615b9ac12e41 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x615b9ac2706a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x615b9ac172fc - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x615b9abef1a6 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x615b9ac0b5a9 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x615b9ab9e0c0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x615b9ac0b762 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x615b9abef252 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x615b9abe7fd9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x615b9abefe4d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x615b9ac2779c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x615b9ab8cebc - <futex_channel[1e6338e893c3977f]::tests::single_inserter::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   12:     0x615b9ab913ab - 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]   13:     0x615b9ab9ea15 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   14:     0x615b9ab982d4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   15:     0x615b9aba1b72 - <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]   16:     0x615b9ac12719 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   17:     0x751c1bf0adfa - <unknown>
[INFO] [stdout]   18:     0x751c1bf9e3d4 - clone
[INFO] [stdout]   19:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tests::multiple_inserter_while_pulling stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::multiple_inserter_while_pulling' (207) panicked at src/lib.rs:134:13:
[INFO] [stdout] assertion failed: r.is_ok()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x615b9ac12e41 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x615b9ac2706a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x615b9ac172fc - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x615b9abef1a6 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x615b9ac0b5a9 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x615b9ab9e0c0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x615b9ac0b762 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x615b9abef284 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x615b9abe7fd9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x615b9abefe4d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x615b9ac2779c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x615b9ac27762 - core[df12db4294e9bfd3]::panicking::panic
[INFO] [stdout]   12:     0x615b9ab8d3ae - <futex_channel[1e6338e893c3977f]::tests::multiple_inserter_while_pulling::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   13:     0x615b9ab913ab - 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:     0x615b9ab9ea15 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   15:     0x615b9ab982d4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   16:     0x615b9aba1b72 - <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:     0x615b9ac12719 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   18:     0x751c1bf0adfa - <unknown>
[INFO] [stdout]   19:     0x751c1bf9e3d4 - clone
[INFO] [stdout]   20:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::multiple_inserter_while_pulling
[INFO] [stdout]     tests::single_inserter
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 7 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 355.78s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd", kill_on_drop: false }`
[INFO] [stdout] 319a49f0240d9a1ee4c764792266e7bf4561c6b3fb4ba15944e4f1a971f6e0bd
