[INFO] fetching crate sloth 0.2.0...
[INFO] testing sloth-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate sloth 0.2.0 into /workspace/builds/worker-52/source
[INFO] validating manifest of crates.io crate sloth 0.2.0 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 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-52/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] d13daa4fd93e648e79bf2b37da5015761949885e6d60642a6b23a70d8ff0a368
[INFO] running `Command { std: "docker" "start" "-a" "d13daa4fd93e648e79bf2b37da5015761949885e6d60642a6b23a70d8ff0a368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d13daa4fd93e648e79bf2b37da5015761949885e6d60642a6b23a70d8ff0a368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d13daa4fd93e648e79bf2b37da5015761949885e6d60642a6b23a70d8ff0a368", kill_on_drop: false }`
[INFO] [stdout] d13daa4fd93e648e79bf2b37da5015761949885e6d60642a6b23a70d8ff0a368
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 7d3724193a725b247b7ec2b3712fef8075a52fafa913dc374ee2008ee9ec1e98
[INFO] running `Command { std: "docker" "start" "-a" "7d3724193a725b247b7ec2b3712fef8075a52fafa913dc374ee2008ee9ec1e98", kill_on_drop: false }`
[INFO] [stderr]    Compiling sloth v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "7d3724193a725b247b7ec2b3712fef8075a52fafa913dc374ee2008ee9ec1e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d3724193a725b247b7ec2b3712fef8075a52fafa913dc374ee2008ee9ec1e98", kill_on_drop: false }`
[INFO] [stdout] 7d3724193a725b247b7ec2b3712fef8075a52fafa913dc374ee2008ee9ec1e98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] [stdout] 49a4165d07083c5967b420724f4aa7b80c03e6580d120e8d325f10795bd0a7e8
[INFO] running `Command { std: "docker" "start" "-a" "49a4165d07083c5967b420724f4aa7b80c03e6580d120e8d325f10795bd0a7e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling sloth v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "49a4165d07083c5967b420724f4aa7b80c03e6580d120e8d325f10795bd0a7e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a4165d07083c5967b420724f4aa7b80c03e6580d120e8d325f10795bd0a7e8", kill_on_drop: false }`
[INFO] [stdout] 49a4165d07083c5967b420724f4aa7b80c03e6580d120e8d325f10795bd0a7e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] [stdout] 31f9ff5fad91994b790f331d30883779842a08649d6dbce82197fa86b42f70c5
[INFO] running `Command { std: "docker" "start" "-a" "31f9ff5fad91994b790f331d30883779842a08649d6dbce82197fa86b42f70c5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sloth-57fd03a459cc67a7)
[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_as_mut ... ok
[INFO] [stdout] test tests::lazy_init_as_ref ... ok
[INFO] [stdout] test tests::lazy_init_borrow ... ok
[INFO] [stdout] test tests::lazy_init_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_int_value_modification_deref_mut ... ok
[INFO] [stdout] test tests::lazy_string_value_retrieval ... ok
[INFO] [stdout] test tests::lazy_value_drop_if_used ... ok
[INFO] [stdout] test tests::lazy_init_deref_mut ... ok
[INFO] [stdout] test tests::lazy_init_deref ... ok
[INFO] [stdout] test tests::lazy_value_no_drop_on_unwrap ... ok
[INFO] [stdout] test tests::lazy_str_value_modification_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_int_value_modification_value_mut ... ok
[INFO] [stdout] test tests::lazy_value_no_drop_if_unused ... ok
[INFO] [stdout] test tests::lazy_int_value_retrieval ... ok
[INFO] [stdout] test tests::lazy_string_value_modification_value_mut ... ok
[INFO] [stdout] test tests::lazy_init_value ... ok
[INFO] [stdout] test tests::lazy_int_value_modification_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_str_value_modification_deref_mut ... ok
[INFO] [stdout] test tests::lazy_string_value_modification_deref_mut ... ok
[INFO] [stdout] test tests::lazy_string_value_modification_borrow_mut ... ok
[INFO] [stdout] test tests::lazy_str_value_retrieval ... ok
[INFO] [stdout] test tests::lazy_str_value_modification_value_mut ... ok
[INFO] [stdout] test tests::lazy_init_unwrap ... ok
[INFO] [stderr]    Doc-tests sloth
[INFO] [stdout] test tests::lazy_init_value_mut ... ok
[INFO] [stdout] test tests::lazy_init_value_ref ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] test src/lib.rs - (line 56) ... ok
[INFO] [stdout] test src/lazy.rs - lazy::Lazy (line 63) ... ok
[INFO] [stdout] test src/lazy.rs - lazy::Lazy (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 45) ... ok
[INFO] [stdout] test src/lazy.rs - lazy::Lazy (line 46) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "31f9ff5fad91994b790f331d30883779842a08649d6dbce82197fa86b42f70c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f9ff5fad91994b790f331d30883779842a08649d6dbce82197fa86b42f70c5", kill_on_drop: false }`
[INFO] [stdout] 31f9ff5fad91994b790f331d30883779842a08649d6dbce82197fa86b42f70c5