[INFO] fetching crate non-empty-collections 0.1.9...
[INFO] testing non-empty-collections-0.1.9 against 1.49.0 for beta-1.50-1
[INFO] extracting crate non-empty-collections 0.1.9 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate non-empty-collections 0.1.9 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 non-empty-collections 0.1.9
[INFO] finished tweaking crates.io crate non-empty-collections 0.1.9
[INFO] tweaked toml for crates.io crate non-empty-collections 0.1.9 written to /workspace/builds/worker-9/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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d45b323a2b859eabb5f6389e949e4da294a9a3b6effd8f73f806b2181084d39
[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" "5d45b323a2b859eabb5f6389e949e4da294a9a3b6effd8f73f806b2181084d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d45b323a2b859eabb5f6389e949e4da294a9a3b6effd8f73f806b2181084d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d45b323a2b859eabb5f6389e949e4da294a9a3b6effd8f73f806b2181084d39", kill_on_drop: false }`
[INFO] [stdout] 5d45b323a2b859eabb5f6389e949e4da294a9a3b6effd8f73f806b2181084d39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bba5fe3acd6fe74834545615858848b0a8e59744230df95884974409b2e1d4c
[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" "9bba5fe3acd6fe74834545615858848b0a8e59744230df95884974409b2e1d4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling non-empty-collections v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/index_set/mod.rs:272:19
[INFO] [stdout]     |
[INFO] [stdout] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stdout]     |                   ^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.42s
[INFO] running `Command { std: "docker" "inspect" "9bba5fe3acd6fe74834545615858848b0a8e59744230df95884974409b2e1d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bba5fe3acd6fe74834545615858848b0a8e59744230df95884974409b2e1d4c", kill_on_drop: false }`
[INFO] [stdout] 9bba5fe3acd6fe74834545615858848b0a8e59744230df95884974409b2e1d4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 113a26d9d07444102a22ff8d618d11f1f77c5efcf19c03fdd18f51c6cf944915
[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" "113a26d9d07444102a22ff8d618d11f1f77c5efcf19c03fdd18f51c6cf944915", kill_on_drop: false }`
[INFO] [stderr]    Compiling non-empty-collections v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/index_set/mod.rs:272:19
[INFO] [stdout]     |
[INFO] [stdout] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stdout]     |                   ^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/index_set/mod.rs:272:19
[INFO] [stdout]     |
[INFO] [stdout] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stdout]     |                   ^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.59s
[INFO] running `Command { std: "docker" "inspect" "113a26d9d07444102a22ff8d618d11f1f77c5efcf19c03fdd18f51c6cf944915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "113a26d9d07444102a22ff8d618d11f1f77c5efcf19c03fdd18f51c6cf944915", kill_on_drop: false }`
[INFO] [stdout] 113a26d9d07444102a22ff8d618d11f1f77c5efcf19c03fdd18f51c6cf944915
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b8d38fce5172651c739339f1b3f0c5ed695a3c6e2bb99082a5d95ca167db42ad
[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" "b8d38fce5172651c739339f1b3f0c5ed695a3c6e2bb99082a5d95ca167db42ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/index_set/mod.rs:272:19
[INFO] [stderr]     |
[INFO] [stderr] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stderr]     |                   ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/index_set/mod.rs:272:19
[INFO] [stderr]     |
[INFO] [stderr] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stderr]     |                   ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/non_empty_collections-fbdc0c8fb46880ce
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test index_map::entry::tests::test_occupied_one ... ok
[INFO] [stdout] test index_map::entry::tests::test_or_insert_with ... ok
[INFO] [stdout] test index_map::entry::tests::test_occupied ... ok
[INFO] [stdout] test index_map::tests::from_item_and_iterator ... ok
[INFO] [stdout] test index_map::entry::tests::test_vacant ... ok
[INFO] [stdout] test index_map::tests::insert_and_contains ... ok
[INFO] [stdout] test index_map::entry::tests::test_or_insert ... ok
[INFO] [stdout] test index_map::tests::insert_and_get ... ok
[INFO] [stdout] test index_map::tests::into_iter ... ok
[INFO] [stdout] test index_set::tests::insert ... ok
[INFO] [stdout] test index_map::tests::into_std_hashmap ... ok
[INFO] [stdout] test index_set::tests::get_unsized ... ok
[INFO] [stdout] test index_set::tests::new_and_contains ... ok
[INFO] [stdout] test index_set::tests::len ... ok
[INFO] [stdout] test index_map::tests::comparison ... ok
[INFO] [stdout] test index_set::tests::from_iterator ... ok
[INFO] [stdout] test index_map::tests::remove_first ... ok
[INFO] [stdout] test index_map::tests::retain ... ok
[INFO] [stdout] test index_map::tests::remove_entry ... ok
[INFO] [stdout] test index_set::tests::comparison ... ok
[INFO] [stdout] test index_map::tests::get_unsized ... ok
[INFO] [stdout] test index_set::tests::remove_first ... ok
[INFO] [stdout] test index_set::tests::new_and_get ... ok
[INFO] [stdout] test index_map::tests::len ... ok
[INFO] [stdout] test index_set::tests::remove ... ok
[INFO] [stdout] test index_set::tests::retain ... ok
[INFO] [stdout] test index_set::tests::take ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests non-empty-collections
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/index_set/mod.rs:272:19
[INFO] [stderr]     |
[INFO] [stderr] 272 | impl<K, S> Extend<(K)> for NonEmptyIndexSet<K, S>
[INFO] [stderr]     |                   ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/index_map/mod.rs - index_map::NonEmptyIndexMap<K, V, S>::is_empty (line 235) ... ok
[INFO] [stdout] test src/index_set/mod.rs - index_set::NonEmptyIndexSet<K, S>::is_empty (line 202) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b8d38fce5172651c739339f1b3f0c5ed695a3c6e2bb99082a5d95ca167db42ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8d38fce5172651c739339f1b3f0c5ed695a3c6e2bb99082a5d95ca167db42ad", kill_on_drop: false }`
[INFO] [stdout] b8d38fce5172651c739339f1b3f0c5ed695a3c6e2bb99082a5d95ca167db42ad