[INFO] fetching crate flat-tree 5.0.0...
[INFO] testing flat-tree-5.0.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate flat-tree 5.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate flat-tree 5.0.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89c58d394ef4c4e8c6d19cb6a4f5873e43a5ee5354015dfa5090a4958a6d5fe3
[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" "89c58d394ef4c4e8c6d19cb6a4f5873e43a5ee5354015dfa5090a4958a6d5fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89c58d394ef4c4e8c6d19cb6a4f5873e43a5ee5354015dfa5090a4958a6d5fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89c58d394ef4c4e8c6d19cb6a4f5873e43a5ee5354015dfa5090a4958a6d5fe3", kill_on_drop: false }`
[INFO] [stdout] 89c58d394ef4c4e8c6d19cb6a4f5873e43a5ee5354015dfa5090a4958a6d5fe3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea5eefb6307cc6c56578d6910ca61b5cf6d91b0171be8080f6954874405a70a1
[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" "ea5eefb6307cc6c56578d6910ca61b5cf6d91b0171be8080f6954874405a70a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling flat-tree v5.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/iterator.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 |     ((1 << 30) * (1 << (n - 30)))
[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 0.30s
[INFO] running `Command { std: "docker" "inspect" "ea5eefb6307cc6c56578d6910ca61b5cf6d91b0171be8080f6954874405a70a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea5eefb6307cc6c56578d6910ca61b5cf6d91b0171be8080f6954874405a70a1", kill_on_drop: false }`
[INFO] [stdout] ea5eefb6307cc6c56578d6910ca61b5cf6d91b0171be8080f6954874405a70a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", 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] e0d06481a973c3aeddd80524555c0372328d2530bda74f0379b6857900f1b5f0
[INFO] running `Command { std: "docker" "start" "-a" "e0d06481a973c3aeddd80524555c0372328d2530bda74f0379b6857900f1b5f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/iterator.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 |     ((1 << 30) * (1 << (n - 30)))
[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]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling flat-tree v5.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/iterator.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 |     ((1 << 30) * (1 << (n - 30)))
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 38.45s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e0d06481a973c3aeddd80524555c0372328d2530bda74f0379b6857900f1b5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0d06481a973c3aeddd80524555c0372328d2530bda74f0379b6857900f1b5f0", kill_on_drop: false }`
[INFO] [stdout] e0d06481a973c3aeddd80524555c0372328d2530bda74f0379b6857900f1b5f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 17819eb5ba68e7335577d60f69db9be251636f6dbba5a4ba9c49e1aff8ebc95b
[INFO] running `Command { std: "docker" "start" "-a" "17819eb5ba68e7335577d60f69db9be251636f6dbba5a4ba9c49e1aff8ebc95b", kill_on_drop: false }`
[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 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/flat_tree-12dc0272cf302ff4
[INFO] [stdout] running 6 tests
[INFO] [stdout] test iterator::tests::test_two_pow_64bit ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iterator-c6fe06efaa30e75c
[INFO] [stdout] test iterator::tests::test_two_pow ... ok
[INFO] [stdout] test tests::test_child_to_parent_to_child ... ok
[INFO] [stdout] test tests::test_is_odd ... ok
[INFO] [stdout] test tests::test_is_even ... ok
[INFO] [stdout] test tests::test_parent_gt_int32 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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-c288f0532cc399b8
[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] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/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] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::right_span (line 185) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::seek (line 62) ... ok
[INFO] [stdout] test src/lib.rs - count (line 231) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::parent (line 146) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::prev (line 110) ... ok
[INFO] [stdout] test src/iterator.rs - iterator (line 2) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::is_right (line 97) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::right_child (line 222) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::is_left (line 84) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::left_child (line 203) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::sibling (line 129) ... ok
[INFO] [stdout] test src/lib.rs - children (line 113) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::left_span (line 167) ... ok
[INFO] [stdout] test src/iterator.rs - iterator::Iterator::new (line 25) ... ok
[INFO] [stdout] test src/lib.rs - index (line 12) ... ok
[INFO] [stdout] test src/lib.rs - depth (line 31) ... ok
[INFO] [stdout] test src/lib.rs - left_span (line 196) ... ok
[INFO] [stdout] test src/lib.rs - offset (line 47) ... ok
[INFO] [stdout] test src/lib.rs - full_roots (line 256) ... ok
[INFO] [stdout] test src/lib.rs - right_span (line 176) ... ok
[INFO] [stdout] test src/lib.rs - right_child (line 155) ... ok
[INFO] [stdout] test src/lib.rs - left_child (line 135) ... ok
[INFO] [stdout] test src/lib.rs - parent (line 67) ... ok
[INFO] [stdout] test src/lib.rs - spans (line 216) ... ok
[INFO] [stdout] test src/lib.rs - sibling (line 83) ... 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 `Command { std: "docker" "inspect" "17819eb5ba68e7335577d60f69db9be251636f6dbba5a4ba9c49e1aff8ebc95b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17819eb5ba68e7335577d60f69db9be251636f6dbba5a4ba9c49e1aff8ebc95b", kill_on_drop: false }`
[INFO] [stdout] 17819eb5ba68e7335577d60f69db9be251636f6dbba5a4ba9c49e1aff8ebc95b