[INFO] fetching crate flipflop 0.2.0...
[INFO] testing flipflop-0.2.0 against 1.94.0 for beta-1.95-1
[INFO] extracting crate flipflop 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate flipflop 0.2.0
[INFO] finished tweaking crates.io crate flipflop 0.2.0
[INFO] tweaked toml for crates.io crate flipflop 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flipflop 0.2.0 on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flipflop 0.2.0 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" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c654548901c02bb081dc41a2ab68cf1f109a79de138db4cedb07ec4c6658a35
[INFO] running `Command { std: "docker" "start" "-a" "2c654548901c02bb081dc41a2ab68cf1f109a79de138db4cedb07ec4c6658a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c654548901c02bb081dc41a2ab68cf1f109a79de138db4cedb07ec4c6658a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c654548901c02bb081dc41a2ab68cf1f109a79de138db4cedb07ec4c6658a35", kill_on_drop: false }`
[INFO] [stdout] 2c654548901c02bb081dc41a2ab68cf1f109a79de138db4cedb07ec4c6658a35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.94.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31d74be1f7b5e54a534485d111b087fd0da1e12393e1cb95ffa1c0b11042fc16
[INFO] running `Command { std: "docker" "start" "-a" "31d74be1f7b5e54a534485d111b087fd0da1e12393e1cb95ffa1c0b11042fc16", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling flipflop v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "31d74be1f7b5e54a534485d111b087fd0da1e12393e1cb95ffa1c0b11042fc16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31d74be1f7b5e54a534485d111b087fd0da1e12393e1cb95ffa1c0b11042fc16", kill_on_drop: false }`
[INFO] [stdout] 31d74be1f7b5e54a534485d111b087fd0da1e12393e1cb95ffa1c0b11042fc16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.94.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 271b3cd48651eeb966eeb94d99faebf9ba1b3251ccbff9a31fb0045448fdb992
[INFO] running `Command { std: "docker" "start" "-a" "271b3cd48651eeb966eeb94d99faebf9ba1b3251ccbff9a31fb0045448fdb992", kill_on_drop: false }`
[INFO] [stderr]    Compiling flipflop v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "271b3cd48651eeb966eeb94d99faebf9ba1b3251ccbff9a31fb0045448fdb992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271b3cd48651eeb966eeb94d99faebf9ba1b3251ccbff9a31fb0045448fdb992", kill_on_drop: false }`
[INFO] [stdout] 271b3cd48651eeb966eeb94d99faebf9ba1b3251ccbff9a31fb0045448fdb992
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.94.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5b61026a55a7cd4d4ee4c67e425e07811be6ea20f03ab216fa3e076098d13af5
[INFO] running `Command { std: "docker" "start" "-a" "5b61026a55a7cd4d4ee4c67e425e07811be6ea20f03ab216fa3e076098d13af5", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flipflop-0e001b91689458b1)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test error::tests::failed_empty ... ok
[INFO] [stdout] test error::tests::failed_empty_bwd_nonempty ... ok
[INFO] [stdout] test error::tests::failed_insert_bwd ... ok
[INFO] [stdout] test error::tests::failed_nonempty_bwd_empty ... ok
[INFO] [stdout] test error::tests::failed_empty_bwd_empty ... ok
[INFO] [stdout] test error::tests::failed_nonempty_bwd_nonempty ... ok
[INFO] [stdout] test error::tests::failed_insert_fwd ... ok
[INFO] [stdout] test error::tests::failed_empty_fwd_nonempty ... ok
[INFO] [stdout] test error::tests::failed_nonempty_fwd_empty ... ok
[INFO] [stdout] test error::tests::failed_nonempty_fwd_nonempty ... ok
[INFO] [stdout] test suite::tests::inconsistent_empty ... ok
[INFO] [stdout] test suite::tests::simple_weird_iterator ... ok
[INFO] [stdout] test suite::tests::consistent_weird_iterator ... ok
[INFO] [stdout] test error::tests::failed_empty_fwd_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flipflop
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 16 | #![cfg_attr(doc, feature(doc_cfg))]
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 1 previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.94.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2024 --crate-type lib --color auto --crate-name flipflop --test src/lib.rs --test-run-directory /opt/rustwide/workdir --deny=unsafe_op_in_unsafe_fn --warn=unreachable_pub '--warn=clippy::unnecessary_semicolon' '--deny=clippy::undocumented_unsafe_blocks' '--warn=clippy::std_instead_of_core' '--warn=clippy::std_instead_of_alloc' '--warn=clippy::semicolon_if_nothing_returned' '--warn=clippy::ref_as_ptr' '--warn=clippy::redundant_else' '--warn=clippy::redundant_closure_for_method_calls' '--warn=clippy::needless_raw_string_hashes' '--warn=clippy::needless_continue' '--allow=clippy::must_use_candidate' '--warn=clippy::missing_docs_in_private_items' --warn=missing_docs --warn=missing_debug_implementations '--warn=rustdoc::missing_crate_level_docs' '--warn=clippy::match_same_arms' '--warn=clippy::map_unwrap_or' '--warn=clippy::manual_is_power_of_two' '--warn=clippy::manual_assert' '--warn=clippy::inconsistent_struct_constructor' '--warn=clippy::ignored_unit_patterns' '--warn=clippy::if_not_else' '--warn=clippy::filter_map_next' '--warn=clippy::doc_markdown' '--warn=clippy::default_trait_access' '--warn=clippy::borrow_as_ptr' '--warn=clippy::alloc_instead_of_core' --extern flipflop=/opt/rustwide/target/debug/deps/libflipflop-d143d92e73894679.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-3507cd3211c38bfb.rlib -L dependency=/opt/rustwide/target/debug/deps -C embed-bitcode=no --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="rand"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "nightly", "rand", "std"))' --cap-lints=warn --error-format human` (exit status: 1)
[INFO] [stderr] note: test exited abnormally; to see the full output pass --no-capture to the harness.
[INFO] running `Command { std: "docker" "inspect" "5b61026a55a7cd4d4ee4c67e425e07811be6ea20f03ab216fa3e076098d13af5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b61026a55a7cd4d4ee4c67e425e07811be6ea20f03ab216fa3e076098d13af5", kill_on_drop: false }`
[INFO] [stdout] 5b61026a55a7cd4d4ee4c67e425e07811be6ea20f03ab216fa3e076098d13af5
