[INFO] fetching crate optcollection 0.1.6...
[INFO] testing optcollection-0.1.6 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate optcollection 0.1.6 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate optcollection 0.1.6 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] 69da1183c06904b70d93e6620a9b1a6383b8c85602efb76ea5c801ab7c0bdd04
[INFO] running `Command { std: "docker" "start" "-a" "69da1183c06904b70d93e6620a9b1a6383b8c85602efb76ea5c801ab7c0bdd04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69da1183c06904b70d93e6620a9b1a6383b8c85602efb76ea5c801ab7c0bdd04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69da1183c06904b70d93e6620a9b1a6383b8c85602efb76ea5c801ab7c0bdd04", kill_on_drop: false }`
[INFO] [stdout] 69da1183c06904b70d93e6620a9b1a6383b8c85602efb76ea5c801ab7c0bdd04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e025ca03d12eb4cce0f284726eb7db61e65089f9e114379c0d289ab4c33bd68c
[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" "e025ca03d12eb4cce0f284726eb7db61e65089f9e114379c0d289ab4c33bd68c", kill_on_drop: false }`
[INFO] [stderr]    Compiling optcollection v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "e025ca03d12eb4cce0f284726eb7db61e65089f9e114379c0d289ab4c33bd68c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e025ca03d12eb4cce0f284726eb7db61e65089f9e114379c0d289ab4c33bd68c", kill_on_drop: false }`
[INFO] [stdout] e025ca03d12eb4cce0f284726eb7db61e65089f9e114379c0d289ab4c33bd68c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3241e11c56c2f72b3df4dda51ec877cd3dde614faa255b678ed5d13223da679
[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" "c3241e11c56c2f72b3df4dda51ec877cd3dde614faa255b678ed5d13223da679", 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 2.49s
[INFO] running `Command { std: "docker" "inspect" "c3241e11c56c2f72b3df4dda51ec877cd3dde614faa255b678ed5d13223da679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3241e11c56c2f72b3df4dda51ec877cd3dde614faa255b678ed5d13223da679", kill_on_drop: false }`
[INFO] [stdout] c3241e11c56c2f72b3df4dda51ec877cd3dde614faa255b678ed5d13223da679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] b0421b815e8d11fccebc55d4f4f7aefe15b1c6bbdeb96bf3493527da494b8a97
[INFO] running `Command { std: "docker" "start" "-a" "b0421b815e8d11fccebc55d4f4f7aefe15b1c6bbdeb96bf3493527da494b8a97", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 11 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optcollection-45e0f781902cdacd)
[INFO] [stdout] test empty_into_none::test::binary_heap ... ok
[INFO] [stdout] test empty_into_none::test::btree_set ... ok
[INFO] [stdout] test empty_into_none::test::linked_list ... ok
[INFO] [stdout] test empty_into_none::test::hash_map ... ok
[INFO] [stdout] test empty_into_none::test::str ... ok
[INFO] [stdout] test empty_into_none::test::string ... ok
[INFO] [stdout] test empty_into_none::test::vec ... ok
[INFO] [stdout] test empty_into_none::test::vec_deque ... ok
[INFO] [stdout] test empty_into_none::test::slice ... ok
[INFO] [stdout] test empty_into_none::test::btree_map ... ok
[INFO] [stderr]    Doc-tests optcollection
[INFO] [stdout] test empty_into_none::test::hash_set ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 114) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 41) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 107) ... 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 96) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 106) ... 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 12) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Option<T>::is_empty (line 70) ... 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 30) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 85) ... ok
[INFO] [stdout] test src/empty_into_none.rs - empty_into_none::EmptyIntoNone (line 21) ... 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 74) ... 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 99) ... 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 77) ... 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 92) ... 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::Option<T>::is_empty (line 84) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 180) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 172) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 165) ... ok
[INFO] [stdout] test src/is_empty.rs - is_empty::Result<T,E>::is_empty (line 158) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 9.74s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b0421b815e8d11fccebc55d4f4f7aefe15b1c6bbdeb96bf3493527da494b8a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0421b815e8d11fccebc55d4f4f7aefe15b1c6bbdeb96bf3493527da494b8a97", kill_on_drop: false }`
[INFO] [stdout] b0421b815e8d11fccebc55d4f4f7aefe15b1c6bbdeb96bf3493527da494b8a97