[INFO] fetching crate lfu 0.2.1...
[INFO] testing lfu-0.2.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate lfu 0.2.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate lfu 0.2.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lfu 0.2.1
[INFO] finished tweaking crates.io crate lfu 0.2.1
[INFO] tweaked toml for crates.io crate lfu 0.2.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6fb32efb416fa2a26dd79d1fc6eb0ebfe6f3c6c579ac907a1dc561d1d456568b
[INFO] running `"docker" "start" "-a" "6fb32efb416fa2a26dd79d1fc6eb0ebfe6f3c6c579ac907a1dc561d1d456568b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling linked_hash_set v0.1.3
[INFO] [stderr]    Compiling lfu v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "6fb32efb416fa2a26dd79d1fc6eb0ebfe6f3c6c579ac907a1dc561d1d456568b"`
[INFO] running `"docker" "rm" "-f" "6fb32efb416fa2a26dd79d1fc6eb0ebfe6f3c6c579ac907a1dc561d1d456568b"`
[INFO] [stdout] 6fb32efb416fa2a26dd79d1fc6eb0ebfe6f3c6c579ac907a1dc561d1d456568b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1ef70918d28cf69faea31e0df4e84e70881633a5f5f21466c19b8c025809d15d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "1ef70918d28cf69faea31e0df4e84e70881633a5f5f21466c19b8c025809d15d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling lfu v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/lib.rs:278:13
[INFO] [stderr]     |
[INFO] [stderr] 278 |         let r = &mut lfu;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "1ef70918d28cf69faea31e0df4e84e70881633a5f5f21466c19b8c025809d15d"`
[INFO] running `"docker" "rm" "-f" "1ef70918d28cf69faea31e0df4e84e70881633a5f5f21466c19b8c025809d15d"`
[INFO] [stdout] 1ef70918d28cf69faea31e0df4e84e70881633a5f5f21466c19b8c025809d15d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d5330e18ee9d7799e0203fd65403e44b7fa30cee2de01fda20a421bd68206c07
[INFO] running `"docker" "start" "-a" "d5330e18ee9d7799e0203fd65403e44b7fa30cee2de01fda20a421bd68206c07"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/lib.rs:278:13
[INFO] [stderr]     |
[INFO] [stderr] 278 |         let r = &mut lfu;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lfu-5a8ae30eb79f3e3f
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::test_key_frequency_update ... ok
[INFO] [stdout] test tests::test_lru_eviction ... ok
[INFO] [stdout] test tests::test_lfu_consumption ... ok
[INFO] [stdout] test tests::test_lfu_iter ... ok
[INFO] [stdout] test tests::test_lfu_indexing ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::test_duplicates ... ok
[INFO] [stdout] test tests::test_lfu_deletion ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lfu
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d5330e18ee9d7799e0203fd65403e44b7fa30cee2de01fda20a421bd68206c07"`
[INFO] running `"docker" "rm" "-f" "d5330e18ee9d7799e0203fd65403e44b7fa30cee2de01fda20a421bd68206c07"`
[INFO] [stdout] d5330e18ee9d7799e0203fd65403e44b7fa30cee2de01fda20a421bd68206c07