[INFO] fetching crate cascara 0.1.0...
[INFO] testing cascara-0.1.0 against 1.52.1 for beta-1.52-2
[INFO] extracting crate cascara 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cascara 0.1.0 on toolchain 1.52.1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cascara 0.1.0
[INFO] finished tweaking crates.io crate cascara 0.1.0
[INFO] tweaked toml for crates.io crate cascara 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f18140859db8bb350d0cf14191b27aa1b0fa44569a4edf113867eb472de86937
[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" "f18140859db8bb350d0cf14191b27aa1b0fa44569a4edf113867eb472de86937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f18140859db8bb350d0cf14191b27aa1b0fa44569a4edf113867eb472de86937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f18140859db8bb350d0cf14191b27aa1b0fa44569a4edf113867eb472de86937", kill_on_drop: false }`
[INFO] [stdout] f18140859db8bb350d0cf14191b27aa1b0fa44569a4edf113867eb472de86937
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d84d2bee757c743c959a885a733aa9c82f9b54f274c48dde60c6cca8a58f5cd7
[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" "d84d2bee757c743c959a885a733aa9c82f9b54f274c48dde60c6cca8a58f5cd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling probabilistic-collections v0.7.0
[INFO] [stderr]    Compiling cascara v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.18s
[INFO] running `Command { std: "docker" "inspect" "d84d2bee757c743c959a885a733aa9c82f9b54f274c48dde60c6cca8a58f5cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84d2bee757c743c959a885a733aa9c82f9b54f274c48dde60c6cca8a58f5cd7", kill_on_drop: false }`
[INFO] [stdout] d84d2bee757c743c959a885a733aa9c82f9b54f274c48dde60c6cca8a58f5cd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1be8ebad3d0ffd03370e7c0284ee3ccd2a11081591d9f3040f824a4f8157f84
[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" "a1be8ebad3d0ffd03370e7c0284ee3ccd2a11081591d9f3040f824a4f8157f84", kill_on_drop: false }`
[INFO] [stderr]    Compiling cascara v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `Command { std: "docker" "inspect" "a1be8ebad3d0ffd03370e7c0284ee3ccd2a11081591d9f3040f824a4f8157f84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1be8ebad3d0ffd03370e7c0284ee3ccd2a11081591d9f3040f824a4f8157f84", kill_on_drop: false }`
[INFO] [stdout] a1be8ebad3d0ffd03370e7c0284ee3ccd2a11081591d9f3040f824a4f8157f84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 31efdc5e42c027ac7a788f56f3ff31a596ce623b4b19755b0354ca970d0f3577
[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" "31efdc5e42c027ac7a788f56f3ff31a596ce623b4b19755b0354ca970d0f3577", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cascara-d01e9135d46f6d38)
[INFO] [stdout] running 57 tests
[INFO] [stdout] test cache::tests::capacity ... ok
[INFO] [stdout] test cache::tests::insert ... ok
[INFO] [stdout] test cache::tests::insert_with_ttl ... ok
[INFO] [stdout] test cache::tests::estimate ... ok
[INFO] [stdout] test cache::tests::clear ... ok
[INFO] [stdout] test cache::tests::contains ... ok
[INFO] [stdout] test cache::tests::insert_without_victim ... ok
[INFO] [stdout] test cache::tests::insert_with_victim ... ok
[INFO] [stdout] test metrics::tests::keys_inserted ... ok
[INFO] [stdout] test cache::tests::room_left ... ok
[INFO] [stdout] test metrics::tests::keys_updated ... ok
[INFO] [stdout] test metrics::tests::misses ... ok
[INFO] [stdout] test metrics::tests::metric_types ... ok
[INFO] [stdout] test metrics::tests::hits ... ok
[INFO] [stdout] test metrics::tests::clear ... ok
[INFO] [stdout] test metrics::tests::debug ... ok
[INFO] [stdout] test metrics::tests::keys_evicted ... ok
[INFO] [stdout] test cache::tests::reject_insert ... ok
[INFO] [stdout] test cache::tests::remove ... ok
[INFO] [stdout] test metrics::tests::get ... ok
[INFO] [stdout] test iter::tests::iter ... ok
[INFO] [stdout] test cache::tests::is_empty ... ok
[INFO] [stdout] test store::tests::deref ... ok
[INFO] [stdout] test store::tests::get_not_expired_items ... ok
[INFO] [stdout] test store::tests::get_mut_not_expired_items ... ok
[INFO] [stdout] test metrics::tests::ratio ... ok
[INFO] [stdout] test store::tests::hash ... ok
[INFO] [stdout] test store::tests::get_mut ... ok
[INFO] [stdout] test store::tests::keys ... ok
[INFO] [stdout] test cache::tests::update ... ok
[INFO] [stdout] test store::tests::clear ... ok
[INFO] [stdout] test store::tests::min_sample ... ok
[INFO] [stdout] test store::tests::room_left ... ok
[INFO] [stdout] test store::tests::sample_eq ... ok
[INFO] [stdout] test store::tests::sample_cmp ... ok
[INFO] [stdout] test tiny_lfu::tests::estimate ... ok
[INFO] [stdout] test tiny_lfu::tests::increment ... ok
[INFO] [stdout] test ttl::tests::clear ... ok
[INFO] [stdout] test tiny_lfu::tests::clear ... ok
[INFO] [stdout] test ttl::tests::do_not_register_zero_duration ... ok
[INFO] [stdout] test ttl::tests::remove ... ok
[INFO] [stdout] test ttl::tests::remove_not_existing ... ok
[INFO] [stdout] test ttl::tests::update ... ok
[INFO] [stdout] test store::tests::set_and_get ... ok
[INFO] [stdout] test store::tests::no_sample ... ok
[INFO] [stdout] test ttl::tests::insert_and_remove ... ok
[INFO] [stdout] test store::tests::remove ... ok
[INFO] [stdout] test store::tests::sample_partial_cmp ... ok
[INFO] [stdout] test store::tests::some_sample ... ok
[INFO] [stdout] test cache::tests::cleanup_with_evict ... ok
[INFO] [stdout] test cache::tests::cleanup_before_insert ... ok
[INFO] [stdout] test store::tests::do_not_get_mut_expired_items ... ok
[INFO] [stdout] test store::tests::cleanup ... ok
[INFO] [stdout] test store::tests::do_not_get_expired_items ... ok
[INFO] [stdout] test ttl::tests::cleanup_unordered ... ok
[INFO] [stdout] test ttl::tests::cleanup ... ok
[INFO] [stdout] test store::tests::update_with_ttl ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 57 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.09s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cascara
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E>::with_on_evict (line 126) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::capacity (line 313) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E>::with_on_evict_and_window_size (line 160) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::with_metrics (line 293) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::is_empty (line 346) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::metrics (line 633) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::iter (line 654) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V>::new (line 61) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::get (line 407) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::insert (line 499) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::contains (line 384) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::clear (line 601) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::len (line 329) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::room_left (line 362) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::get_mut (line 449) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::remove (line 578) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V>::with_window_size (line 85) ... ok
[INFO] [stdout] test src/cache.rs - cache::Cache<K, V, E, S, A, H>::insert_with_ttl (line 530) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 14.15s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "31efdc5e42c027ac7a788f56f3ff31a596ce623b4b19755b0354ca970d0f3577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31efdc5e42c027ac7a788f56f3ff31a596ce623b4b19755b0354ca970d0f3577", kill_on_drop: false }`
[INFO] [stdout] 31efdc5e42c027ac7a788f56f3ff31a596ce623b4b19755b0354ca970d0f3577