[INFO] fetching crate flat-tree 5.0.0...
[INFO] testing flat-tree-5.0.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate flat-tree 5.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate flat-tree 5.0.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate flat-tree 5.0.0
[INFO] finished tweaking crates.io crate flat-tree 5.0.0
[INFO] tweaked toml for crates.io crate flat-tree 5.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b5af4db1c7caf3af90c6af1a65e374cb57406a1492e8a539f6d90e536ff8dc0d
[INFO] running `"docker" "start" "-a" "b5af4db1c7caf3af90c6af1a65e374cb57406a1492e8a539f6d90e536ff8dc0d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling flat-tree v5.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/iterator.rs:262:5
[INFO] [stderr]     |
[INFO] [stderr] 262 |     ((1 << 30) * (1 << (n - 30)))
[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 dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "b5af4db1c7caf3af90c6af1a65e374cb57406a1492e8a539f6d90e536ff8dc0d"`
[INFO] running `"docker" "rm" "-f" "b5af4db1c7caf3af90c6af1a65e374cb57406a1492e8a539f6d90e536ff8dc0d"`
[INFO] [stdout] b5af4db1c7caf3af90c6af1a65e374cb57406a1492e8a539f6d90e536ff8dc0d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 92229a00952885653da1f1b21ad22eb53df888b8e683ecfec9b53f314345ce00
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "92229a00952885653da1f1b21ad22eb53df888b8e683ecfec9b53f314345ce00"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling oorandom v11.1.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/iterator.rs:262:5
[INFO] [stderr]     |
[INFO] [stderr] 262 |     ((1 << 30) * (1 << (n - 30)))
[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]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-queue v0.2.2
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling criterion-plot v0.4.2
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling criterion v0.3.2
[INFO] [stderr]    Compiling flat-tree v5.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/iterator.rs:262:5
[INFO] [stderr]     |
[INFO] [stderr] 262 |     ((1 << 30) * (1 << (n - 30)))
[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 1m 04s
[INFO] running `"docker" "inspect" "92229a00952885653da1f1b21ad22eb53df888b8e683ecfec9b53f314345ce00"`
[INFO] running `"docker" "rm" "-f" "92229a00952885653da1f1b21ad22eb53df888b8e683ecfec9b53f314345ce00"`
[INFO] [stdout] 92229a00952885653da1f1b21ad22eb53df888b8e683ecfec9b53f314345ce00
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7bb04d5bbaf06e0a1f35a896b57bb5c8922b6c740435ec75c9342b91120496ae
[INFO] running `"docker" "start" "-a" "7bb04d5bbaf06e0a1f35a896b57bb5c8922b6c740435ec75c9342b91120496ae"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/iterator.rs:262:5
[INFO] [stderr]     |
[INFO] [stderr] 262 |     ((1 << 30) * (1 << (n - 30)))
[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 block return value
[INFO] [stderr]    --> src/iterator.rs:262:5
[INFO] [stderr]     |
[INFO] [stderr] 262 |     ((1 << 30) * (1 << (n - 30)))
[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 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/flat_tree-6077db834956c637
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_is_even ... ok
[INFO] [stdout] test tests::test_parent_gt_int32 ... ok
[INFO] [stdout] test tests::test_is_odd ... ok
[INFO] [stdout] test tests::test_child_to_parent_to_child ... ok
[INFO] [stdout] test iterator::tests::test_two_pow_64bit ... ok
[INFO] [stdout] test iterator::tests::test_two_pow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iterator-294a477eaf0919a1
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test iterator ... ok
[INFO] [stdout] test non_leaf_start ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iterator_regression-0cff8b47ffff2faf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test parent_and_odd_offset ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flat-tree
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::sibling (line 129) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::is_right (line 97) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::left_child (line 203) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::seek (line 62) ... ok
[INFO] [stdout] test src/iterator.rs - iterator (line 2) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::left_span (line 167) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::is_left (line 84) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::right_child (line 222) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::prev (line 110) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::parent (line 146) ... ok
[INFO] [stdout] test src/lib.rs - children (line 113) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::right_span (line 185) ... ok
[INFO] [stdout] test src/lib.rs - count (line 231) ... ok
[INFO] [stdout] test src/lib.rs - left_span (line 196) ... ok
[INFO] [stdout] test src/lib.rs - left_child (line 135) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::new (line 25) ... ok
[INFO] [stdout] test src/lib.rs - right_child (line 155) ... ok
[INFO] [stdout] test src/lib.rs - sibling (line 83) ... ok
[INFO] [stdout] test src/lib.rs - full_roots (line 256) ... ok
[INFO] [stdout] test src/lib.rs - depth (line 31) ... ok
[INFO] [stdout] test src/lib.rs - index (line 12) ... ok
[INFO] [stdout] test src/lib.rs - uncle (line 98) ... ok
[INFO] [stdout] test src/lib.rs - spans (line 216) ... ok
[INFO] [stdout] test src/lib.rs - offset (line 47) ... ok
[INFO] [stdout] test src/lib.rs - parent (line 67) ... ok
[INFO] [stdout] test src/lib.rs - right_span (line 176) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7bb04d5bbaf06e0a1f35a896b57bb5c8922b6c740435ec75c9342b91120496ae"`
[INFO] running `"docker" "rm" "-f" "7bb04d5bbaf06e0a1f35a896b57bb5c8922b6c740435ec75c9342b91120496ae"`
[INFO] [stdout] 7bb04d5bbaf06e0a1f35a896b57bb5c8922b6c740435ec75c9342b91120496ae