[INFO] fetching crate safecloset 0.1.3...
[INFO] testing safecloset-0.1.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate safecloset 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate safecloset 0.1.3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate safecloset 0.1.3
[INFO] finished tweaking crates.io crate safecloset 0.1.3
[INFO] tweaked toml for crates.io crate safecloset 0.1.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate safecloset 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ba0d6d6704b364a64a0c2225af38ef322b072a5929bf08b8b1d682a6595e6f8
[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" "3ba0d6d6704b364a64a0c2225af38ef322b072a5929bf08b8b1d682a6595e6f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ba0d6d6704b364a64a0c2225af38ef322b072a5929bf08b8b1d682a6595e6f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba0d6d6704b364a64a0c2225af38ef322b072a5929bf08b8b1d682a6595e6f8", kill_on_drop: false }`
[INFO] [stdout] 3ba0d6d6704b364a64a0c2225af38ef322b072a5929bf08b8b1d682a6595e6f8
[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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bdfa969b9baedc17843429fb794844c8b8354b92e98dfc5d48bc4d83c5216a2
[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" "0bdfa969b9baedc17843429fb794844c8b8354b92e98dfc5d48bc4d83c5216a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling file-size v1.0.3
[INFO] [stderr]    Compiling zeroize v1.3.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling blake2b_simd v0.5.11
[INFO] [stderr]    Compiling minimad v0.8.0
[INFO] [stderr]    Compiling secular v1.0.1
[INFO] [stderr]    Compiling rmp v0.8.10
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling cipher v0.3.0
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling aead v0.4.2
[INFO] [stderr]    Compiling rust-argon2 v0.8.3
[INFO] [stderr]    Compiling polyval v0.5.2
[INFO] [stderr]    Compiling aes v0.7.4
[INFO] [stderr]    Compiling ctr v0.8.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling aes-gcm-siv v0.10.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling crossterm v0.21.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling proc-status v0.1.1
[INFO] [stderr]    Compiling termimad v0.16.1
[INFO] [stderr]    Compiling argh v0.1.5
[INFO] [stderr]    Compiling cli-log v2.0.0
[INFO] [stderr]    Compiling rmp-serde v0.15.5
[INFO] [stderr]    Compiling safecloset v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::option::Option::<T>::insert` that must be used
[INFO] [stdout]   --> src/timer/mod.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         self.pair.0.lock().unwrap().insert(timer_command);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you intended to set a value, consider assignment instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.39s
[INFO] running `Command { std: "docker" "inspect" "0bdfa969b9baedc17843429fb794844c8b8354b92e98dfc5d48bc4d83c5216a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bdfa969b9baedc17843429fb794844c8b8354b92e98dfc5d48bc4d83c5216a2", kill_on_drop: false }`
[INFO] [stdout] 0bdfa969b9baedc17843429fb794844c8b8354b92e98dfc5d48bc4d83c5216a2
[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" "+1.55.0" "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] 6f72924ff3be54741a1f70eb7fefbff8dd231c79d5c3c096e1ae36519cf31268
[INFO] running `Command { std: "docker" "start" "-a" "6f72924ff3be54741a1f70eb7fefbff8dd231c79d5c3c096e1ae36519cf31268", kill_on_drop: false }`
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling safecloset v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::option::Option::<T>::insert` that must be used
[INFO] [stdout]   --> src/timer/mod.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         self.pair.0.lock().unwrap().insert(timer_command);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you intended to set a value, consider assignment instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.69s
[INFO] running `Command { std: "docker" "inspect" "6f72924ff3be54741a1f70eb7fefbff8dd231c79d5c3c096e1ae36519cf31268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f72924ff3be54741a1f70eb7fefbff8dd231c79d5c3c096e1ae36519cf31268", kill_on_drop: false }`
[INFO] [stdout] 6f72924ff3be54741a1f70eb7fefbff8dd231c79d5c3c096e1ae36519cf31268
[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" "+1.55.0" "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] 770fc872cd05f69fe9fb21c5b8ed9ae4a2fa9a95925203161c6ff66c215422a2
[INFO] running `Command { std: "docker" "start" "-a" "770fc872cd05f69fe9fb21c5b8ed9ae4a2fa9a95925203161c6ff66c215422a2", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::option::Option::<T>::insert` that must be used
[INFO] [stderr]   --> src/timer/mod.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         self.pair.0.lock().unwrap().insert(timer_command);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to set a value, consider assignment instead
[INFO] [stderr] 
[INFO] [stderr] warning: `safecloset` (bin "safecloset" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/safecloset-375070bf5e746a83)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test core::random::test_random_nonce ... ok
[INFO] [stdout] test timer::timer_tests::test_timer_stop ... ok
[INFO] [stdout] test timer::timer_tests::test_timer_ring_now ... ok
[INFO] [stdout] test timer::timer_tests::test_timer_timeout ... ok
[INFO] [stdout] test timer::timer_tests::test_timer_reset ... ok
[INFO] [stdout] test core::closet::test_create_write_read ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 27.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "770fc872cd05f69fe9fb21c5b8ed9ae4a2fa9a95925203161c6ff66c215422a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "770fc872cd05f69fe9fb21c5b8ed9ae4a2fa9a95925203161c6ff66c215422a2", kill_on_drop: false }`
[INFO] [stdout] 770fc872cd05f69fe9fb21c5b8ed9ae4a2fa9a95925203161c6ff66c215422a2