[INFO] fetching crate optcollection 0.1.6...
[INFO] testing optcollection-0.1.6 against 1.60.0 for beta-1.61-1
[INFO] extracting crate optcollection 0.1.6 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate optcollection 0.1.6 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optcollection 0.1.6
[INFO] finished tweaking crates.io crate optcollection 0.1.6
[INFO] tweaked toml for crates.io crate optcollection 0.1.6 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40c6f72eccb90902baf1520ac50e7cfd1705b9ba2358335c5b8c026e41883a3f
[INFO] running `Command { std: "docker" "start" "-a" "40c6f72eccb90902baf1520ac50e7cfd1705b9ba2358335c5b8c026e41883a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40c6f72eccb90902baf1520ac50e7cfd1705b9ba2358335c5b8c026e41883a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c6f72eccb90902baf1520ac50e7cfd1705b9ba2358335c5b8c026e41883a3f", kill_on_drop: false }`
[INFO] [stdout] 40c6f72eccb90902baf1520ac50e7cfd1705b9ba2358335c5b8c026e41883a3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 911e25e6c496db165a96d40d9fbd1b0bec255e3512a2d5400670f9552c0449fc
[INFO] running `Command { std: "docker" "start" "-a" "911e25e6c496db165a96d40d9fbd1b0bec255e3512a2d5400670f9552c0449fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling optcollection v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "911e25e6c496db165a96d40d9fbd1b0bec255e3512a2d5400670f9552c0449fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911e25e6c496db165a96d40d9fbd1b0bec255e3512a2d5400670f9552c0449fc", kill_on_drop: false }`
[INFO] [stdout] 911e25e6c496db165a96d40d9fbd1b0bec255e3512a2d5400670f9552c0449fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0088f2a4927008d3d943a3eb43101e2255209a2014afcd8d17e90a036bc46271
[INFO] running `Command { std: "docker" "start" "-a" "0088f2a4927008d3d943a3eb43101e2255209a2014afcd8d17e90a036bc46271", kill_on_drop: false }`
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling optcollection v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "0088f2a4927008d3d943a3eb43101e2255209a2014afcd8d17e90a036bc46271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0088f2a4927008d3d943a3eb43101e2255209a2014afcd8d17e90a036bc46271", kill_on_drop: false }`
[INFO] [stdout] 0088f2a4927008d3d943a3eb43101e2255209a2014afcd8d17e90a036bc46271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d9e3d80e9179e9ebd86095452c8378a05a0103f93d467ae9a5915fcae1dab5bf
[INFO] running `Command { std: "docker" "start" "-a" "d9e3d80e9179e9ebd86095452c8378a05a0103f93d467ae9a5915fcae1dab5bf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optcollection-1f0b3735c729a7c6)
[INFO] [stdout] running 11 tests
[INFO] [stdout] test empty_into_none::test::vec_deque ... ok
[INFO] [stdout] test empty_into_none::test::string ... ok
[INFO] [stderr]    Doc-tests optcollection
[INFO] [stdout] test empty_into_none::test::str ... ok
[INFO] [stdout] test empty_into_none::test::hash_set ... ok
[INFO] [stdout] test empty_into_none::test::binary_heap ... ok
[INFO] [stdout] test empty_into_none::test::hash_map ... ok
[INFO] [stdout] test empty_into_none::test::vec ... ok
[INFO] [stdout] test empty_into_none::test::btree_map ... ok
[INFO] [stdout] test empty_into_none::test::slice ... ok
[INFO] [stdout] test empty_into_none::test::btree_set ... ok
[INFO] [stdout] test empty_into_none::test::linked_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 172) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 41) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 165) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 12) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 84) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 139) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 121) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 52) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 92) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 77) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 150) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 143) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 106) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 136) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 99) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 30) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 21) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 180) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 74) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 130) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 85) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 114) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 158) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 96) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 63) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 107) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 70) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.29s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d9e3d80e9179e9ebd86095452c8378a05a0103f93d467ae9a5915fcae1dab5bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9e3d80e9179e9ebd86095452c8378a05a0103f93d467ae9a5915fcae1dab5bf", kill_on_drop: false }`
[INFO] [stdout] d9e3d80e9179e9ebd86095452c8378a05a0103f93d467ae9a5915fcae1dab5bf