[INFO] fetching crate sloth 0.2.0...
[INFO] testing sloth-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate sloth 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate sloth 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sloth 0.2.0
[INFO] finished tweaking crates.io crate sloth 0.2.0
[INFO] tweaked toml for crates.io crate sloth 0.2.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] 564dc972d84460fd5d4afbb12c6ff87f33948a622958959d2798e418bd53806e
[INFO] running `Command { std: "docker" "start" "-a" "564dc972d84460fd5d4afbb12c6ff87f33948a622958959d2798e418bd53806e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "564dc972d84460fd5d4afbb12c6ff87f33948a622958959d2798e418bd53806e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564dc972d84460fd5d4afbb12c6ff87f33948a622958959d2798e418bd53806e", kill_on_drop: false }`
[INFO] [stdout] 564dc972d84460fd5d4afbb12c6ff87f33948a622958959d2798e418bd53806e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd4fb0dfa4f7899de4c21fc9e4da226bbb4d496acf9940748cbeffaaa174aa1d
[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" "cd4fb0dfa4f7899de4c21fc9e4da226bbb4d496acf9940748cbeffaaa174aa1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling sloth v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "cd4fb0dfa4f7899de4c21fc9e4da226bbb4d496acf9940748cbeffaaa174aa1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd4fb0dfa4f7899de4c21fc9e4da226bbb4d496acf9940748cbeffaaa174aa1d", kill_on_drop: false }`
[INFO] [stdout] cd4fb0dfa4f7899de4c21fc9e4da226bbb4d496acf9940748cbeffaaa174aa1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6f35f65690e17bfaead38f0ed352ef8ebf15e839f1058d73d0f205f261a0dc8
[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" "d6f35f65690e17bfaead38f0ed352ef8ebf15e839f1058d73d0f205f261a0dc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling sloth v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "d6f35f65690e17bfaead38f0ed352ef8ebf15e839f1058d73d0f205f261a0dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f35f65690e17bfaead38f0ed352ef8ebf15e839f1058d73d0f205f261a0dc8", kill_on_drop: false }`
[INFO] [stdout] d6f35f65690e17bfaead38f0ed352ef8ebf15e839f1058d73d0f205f261a0dc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5006a0c6321fbb223d9b6320c59672c7afff8ad012bb9be1f02e2e3a29c8e08f
[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" "5006a0c6321fbb223d9b6320c59672c7afff8ad012bb9be1f02e2e3a29c8e08f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sloth-f25df59258fabebd
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test tests::lazy_evaluator_called_once ... ok
[INFO] [stdout] test tests::lazy_evaluator_never_called_if_unused ... ok
[INFO] [stdout] test tests::lazy_init_borrow ... ok
[INFO] [stdout] test tests::lazy_init_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_init_deref_mut ... ok
[INFO] [stdout] test tests::lazy_init_unwrap ... ok
[INFO] [stdout] test tests::lazy_init_value ... ok
[INFO] [stdout] test tests::lazy_init_value_mut ... ok
[INFO] [stdout] test tests::lazy_int_value_modification_deref_mut ... ok
[INFO] [stdout] test tests::lazy_int_value_modification_value_mut ... ok
[INFO] [stdout] test tests::lazy_int_value_retrieval ... ok
[INFO] [stdout] test tests::lazy_str_value_modification_deref_mut ... ok
[INFO] [stdout] test tests::lazy_str_value_modification_value_mut ... ok
[INFO] [stdout] test tests::lazy_str_value_retrieval ... ok
[INFO] [stdout] test tests::lazy_string_value_modification_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_string_value_modification_deref_mut ... ok
[INFO] [stdout] test tests::lazy_string_value_modification_value_mut ... ok
[INFO] [stdout] test tests::lazy_value_no_drop_if_unused ... ok
[INFO] [stdout] test tests::lazy_string_value_retrieval ... ok
[INFO] [stdout] test tests::lazy_value_no_drop_on_unwrap ... ok
[INFO] [stderr]    Doc-tests sloth
[INFO] [stdout] test tests::lazy_str_value_modification_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_int_value_modification_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_value_drop_if_used ... ok
[INFO] [stdout] test tests::lazy_init_value_ref ... ok
[INFO] [stdout] test tests::lazy_init_deref ... ok
[INFO] [stdout] test tests::lazy_init_as_ref ... ok
[INFO] [stdout] test tests::lazy_init_as_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lazy.rs - lazy::Lazy (line 46) ... ok
[INFO] [stdout] test src/lazy.rs - lazy::Lazy (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] test src/lib.rs - (line 45) ... ok
[INFO] [stdout] test src/lazy.rs - lazy::Lazy (line 63) ... ok
[INFO] [stdout] test src/lib.rs - (line 56) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5006a0c6321fbb223d9b6320c59672c7afff8ad012bb9be1f02e2e3a29c8e08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5006a0c6321fbb223d9b6320c59672c7afff8ad012bb9be1f02e2e3a29c8e08f", kill_on_drop: false }`
[INFO] [stdout] 5006a0c6321fbb223d9b6320c59672c7afff8ad012bb9be1f02e2e3a29c8e08f