[INFO] fetching crate lfu_cache 1.2.1...
[INFO] testing lfu_cache-1.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate lfu_cache 1.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lfu_cache 1.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lfu_cache 1.2.1
[INFO] finished tweaking crates.io crate lfu_cache 1.2.1
[INFO] tweaked toml for crates.io crate lfu_cache 1.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e2f4f9e79255717c1b3f846b25772108a7ba3d140321812c506c522eefc5be5
[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" "5e2f4f9e79255717c1b3f846b25772108a7ba3d140321812c506c522eefc5be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e2f4f9e79255717c1b3f846b25772108a7ba3d140321812c506c522eefc5be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e2f4f9e79255717c1b3f846b25772108a7ba3d140321812c506c522eefc5be5", kill_on_drop: false }`
[INFO] [stdout] 5e2f4f9e79255717c1b3f846b25772108a7ba3d140321812c506c522eefc5be5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d84f73da6ad61c3b66906e143d70b7be53ad5394ca3a2bf4a659a4a1f651da12
[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" "d84f73da6ad61c3b66906e143d70b7be53ad5394ca3a2bf4a659a4a1f651da12", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lfu_cache v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "d84f73da6ad61c3b66906e143d70b7be53ad5394ca3a2bf4a659a4a1f651da12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84f73da6ad61c3b66906e143d70b7be53ad5394ca3a2bf4a659a4a1f651da12", kill_on_drop: false }`
[INFO] [stdout] d84f73da6ad61c3b66906e143d70b7be53ad5394ca3a2bf4a659a4a1f651da12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ebe0394af7c23f18cdafc903914817be3c6680dc26ed7cc388899a5113712062
[INFO] running `Command { std: "docker" "start" "-a" "ebe0394af7c23f18cdafc903914817be3c6680dc26ed7cc388899a5113712062", kill_on_drop: false }`
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling lfu_cache v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 14.59s
[INFO] running `Command { std: "docker" "inspect" "ebe0394af7c23f18cdafc903914817be3c6680dc26ed7cc388899a5113712062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebe0394af7c23f18cdafc903914817be3c6680dc26ed7cc388899a5113712062", kill_on_drop: false }`
[INFO] [stdout] ebe0394af7c23f18cdafc903914817be3c6680dc26ed7cc388899a5113712062
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 85e4fe79222426d681c3e86a724faac1dd2097041c19cfd21664242f9b663151
[INFO] running `Command { std: "docker" "start" "-a" "85e4fe79222426d681c3e86a724faac1dd2097041c19cfd21664242f9b663151", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lfu_cache-7529755fddaef15d)
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test lfu::frequency_list::init_front_empty ... ok
[INFO] [stdout] test lfu::bookkeeping::capacity_reports_internal_capacity ... ok
[INFO] [stdout] test lfu::entry::new_constructs_dangling_entry_with_owner ... ok
[INFO] [stdout] test lfu::bookkeeping::unbounded_is_unbounded ... ok
[INFO] [stdout] test lfu::frequency_list::init_front_non_empty ... ok
[INFO] [stdout] test lfu::bookkeeping::freq_list_multi_items ... ok
[INFO] [stdout] test lfu::frequency_list::new_is_empty ... ok
[INFO] [stdout] test lfu::get::get_mut ... ok
[INFO] [stdout] test lfu::get::getting_is_ok_after_adding_other_value ... ok
[INFO] [stdout] test lfu::get::empty ... ok
[INFO] [stdout] test lfu::bookkeeping::freq_list_node_merges ... ok
[INFO] [stdout] test lfu::get::bounded_alternating_values ... ok
[INFO] [stdout] test lfu::bookkeeping::getting_one_element_has_constant_freq_list_size ... ok
[INFO] [stdout] test lfu::insert::insert_bounded ... ok
[INFO] [stdout] test lfu::insert::insert_returns_evicted ... ok
[INFO] [stdout] test lfu::pop::pop_empty ... ok
[INFO] [stdout] test lfu::remove::remove_empty ... ok
[INFO] [stdout] test lfu::bookkeeping::clear_is_ok ... ok
[INFO] [stdout] test lfu::remove::remove_end ... ok
[INFO] [stdout] test lfu::remove::remove_start ... ok
[INFO] [stdout] test lfu::remove::remove_to_nonempty ... ok
[INFO] [stdout] test lfu::remove::remove_to_empty ... ok
[INFO] [stdout] test lfu::node::create_increment_next_non_empty ... ok
[INFO] [stdout] test lfu::node::peek_non_empty ... ok
[INFO] [stdout] test lfu::node::pop_non_empty ... ok
[INFO] [stdout] test lfu::node::create_increment_next_empty ... ok
[INFO] [stdout] test lfu::node::peek_empty ... ok
[INFO] [stdout] test lfu::node::pop_single ... ok
[INFO] [stdout] test lfu::node::pop_empty ... ok
[INFO] [stdout] test lfu::node::append_empty ... ok
[INFO] [stdout] test lfu::insert::reinsertion_of_same_key_resets_freq ... ok
[INFO] [stdout] test lfu::insert::insert_unbounded ... ok
[INFO] [stdout] test lfu::pop::pop ... ok
[INFO] [stdout] test lfu::node::append_non_empty ... ok
[INFO] [stdout] test lfu::remove::remove_middle ... ok
[INFO] [stdout] test timed_lfu::timed::non_expired_remains ... ok
[INFO] [stdout] test timed_lfu::timed::old_items_are_evicted ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.51s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lfu_cache
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lfu.rs - lfu::LfuCache<Key, Value>::with_capacity (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "85e4fe79222426d681c3e86a724faac1dd2097041c19cfd21664242f9b663151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85e4fe79222426d681c3e86a724faac1dd2097041c19cfd21664242f9b663151", kill_on_drop: false }`
[INFO] [stdout] 85e4fe79222426d681c3e86a724faac1dd2097041c19cfd21664242f9b663151