[INFO] crate flat-tree 5.0.0 is already in cache
[INFO] testing flat-tree-5.0.0 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate flat-tree 5.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate flat-tree 5.0.0 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "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-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 423a5af10382412a0a7ae2f727c8eab5aae3225ab2a1261f8765a42d7b188c23
[INFO] running `"docker" "start" "-a" "423a5af10382412a0a7ae2f727c8eab5aae3225ab2a1261f8765a42d7b188c23"`
[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 0.53s
[INFO] running `"docker" "inspect" "423a5af10382412a0a7ae2f727c8eab5aae3225ab2a1261f8765a42d7b188c23"`
[INFO] running `"docker" "rm" "-f" "423a5af10382412a0a7ae2f727c8eab5aae3225ab2a1261f8765a42d7b188c23"`
[INFO] [stdout] 423a5af10382412a0a7ae2f727c8eab5aae3225ab2a1261f8765a42d7b188c23
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 60c41e7fe8ca96d1f3e6c145278cbc94506596fb6f04e99fdc9033fc2c90049a
[INFO] running `"docker" "start" "-a" "60c41e7fe8ca96d1f3e6c145278cbc94506596fb6f04e99fdc9033fc2c90049a"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling oorandom v11.1.0
[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 itertools v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling criterion-plot v0.4.1
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling tinytemplate v1.0.3
[INFO] [stderr]    Compiling plotters v0.2.12
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling criterion v0.3.1
[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 42s
[INFO] running `"docker" "inspect" "60c41e7fe8ca96d1f3e6c145278cbc94506596fb6f04e99fdc9033fc2c90049a"`
[INFO] running `"docker" "rm" "-f" "60c41e7fe8ca96d1f3e6c145278cbc94506596fb6f04e99fdc9033fc2c90049a"`
[INFO] [stdout] 60c41e7fe8ca96d1f3e6c145278cbc94506596fb6f04e99fdc9033fc2c90049a
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] a75442df8c023ecade9ac59450b720702c25dccc05dde153a204e1103e4e2d02
[INFO] running `"docker" "start" "-a" "a75442df8c023ecade9ac59450b720702c25dccc05dde153a204e1103e4e2d02"`
[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 0.17s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/flat_tree-b22bc4f65c3a7a89
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_is_odd ... ok
[INFO] [stdout] test tests::test_child_to_parent_to_child ... ok
[INFO] [stdout] test tests::test_parent_gt_int32 ... ok
[INFO] [stdout] test tests::test_is_even ... 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-55680093f30576fe
[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-1ef9366a3e2cc9ac
[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 (line 2) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::prev (line 110) ... 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::new (line 25) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::left_child (line 203) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::parent (line 146) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::is_right (line 97) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::sibling (line 129) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::seek (line 62) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::right_span (line 185) ... ok
[INFO] [stdout] test src/lib.rs - children (line 113) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::right_child (line 222) ... ok
[INFO] [stdout] test src/lib.rs - depth (line 31) ... ok
[INFO] [stdout] test src/lib.rs - count (line 231) ... ok
[INFO] [stdout] test src/lib.rs - full_roots (line 256) ... ok
[INFO] [stdout] test src/lib.rs - offset (line 47) ... ok
[INFO] [stdout] test src/lib.rs - left_child (line 135) ... ok
[INFO] [stdout] test src/lib.rs - left_span (line 196) ... ok
[INFO] [stdout] test src/lib.rs - parent (line 67) ... ok
[INFO] [stdout] test src/lib.rs - index (line 12) ... ok
[INFO] [stdout] test src/lib.rs - right_child (line 155) ... ok
[INFO] [stdout] test src/lib.rs - right_span (line 176) ... ok
[INFO] [stdout] test src/lib.rs - sibling (line 83) ... ok
[INFO] [stdout] test src/lib.rs - spans (line 216) ... ok
[INFO] [stdout] test src/lib.rs - uncle (line 98) ... 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" "a75442df8c023ecade9ac59450b720702c25dccc05dde153a204e1103e4e2d02"`
[INFO] running `"docker" "rm" "-f" "a75442df8c023ecade9ac59450b720702c25dccc05dde153a204e1103e4e2d02"`
[INFO] [stdout] a75442df8c023ecade9ac59450b720702c25dccc05dde153a204e1103e4e2d02