[INFO] fetching crate unbounded-interval-tree 0.2.3...
[INFO] testing unbounded-interval-tree-0.2.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate unbounded-interval-tree 0.2.3 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate unbounded-interval-tree 0.2.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unbounded-interval-tree 0.2.3
[INFO] finished tweaking crates.io crate unbounded-interval-tree 0.2.3
[INFO] tweaked toml for crates.io crate unbounded-interval-tree 0.2.3 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 813a1435d63a68763b92235f59ac92f6ffaa394d4f63112fa0246f8cedc2d06c
[INFO] running `Command { std: "docker" "start" "-a" "813a1435d63a68763b92235f59ac92f6ffaa394d4f63112fa0246f8cedc2d06c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "813a1435d63a68763b92235f59ac92f6ffaa394d4f63112fa0246f8cedc2d06c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "813a1435d63a68763b92235f59ac92f6ffaa394d4f63112fa0246f8cedc2d06c", kill_on_drop: false }`
[INFO] [stdout] 813a1435d63a68763b92235f59ac92f6ffaa394d4f63112fa0246f8cedc2d06c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bb1bb23117e23ab9197926e30161d1af6cb2aec76e2f3dcc1290fbf81a4d289
[INFO] running `Command { std: "docker" "start" "-a" "3bb1bb23117e23ab9197926e30161d1af6cb2aec76e2f3dcc1290fbf81a4d289", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling unbounded-interval-tree v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:666:9
[INFO] [stdout]     |
[INFO] [stdout] 666 |         mem::replace(&mut self.root, None);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.86s
[INFO] running `Command { std: "docker" "inspect" "3bb1bb23117e23ab9197926e30161d1af6cb2aec76e2f3dcc1290fbf81a4d289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bb1bb23117e23ab9197926e30161d1af6cb2aec76e2f3dcc1290fbf81a4d289", kill_on_drop: false }`
[INFO] [stdout] 3bb1bb23117e23ab9197926e30161d1af6cb2aec76e2f3dcc1290fbf81a4d289
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f695c30744beb9816ab98487f7eaa85a8ab1dc6b53ee1607be404595dac8c987
[INFO] running `Command { std: "docker" "start" "-a" "f695c30744beb9816ab98487f7eaa85a8ab1dc6b53ee1607be404595dac8c987", kill_on_drop: false }`
[INFO] [stderr]    Compiling unbounded-interval-tree v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:666:9
[INFO] [stdout]     |
[INFO] [stdout] 666 |         mem::replace(&mut self.root, None);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:666:9
[INFO] [stdout]     |
[INFO] [stdout] 666 |         mem::replace(&mut self.root, None);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "f695c30744beb9816ab98487f7eaa85a8ab1dc6b53ee1607be404595dac8c987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f695c30744beb9816ab98487f7eaa85a8ab1dc6b53ee1607be404595dac8c987", kill_on_drop: false }`
[INFO] [stdout] f695c30744beb9816ab98487f7eaa85a8ab1dc6b53ee1607be404595dac8c987
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f3e5b5b9075f92a146e218789e6debb647ddc2a82e02d1f4f3240f092cfac6b5
[INFO] running `Command { std: "docker" "start" "-a" "f3e5b5b9075f92a146e218789e6debb647ddc2a82e02d1f4f3240f092cfac6b5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout] running 16 tests
[INFO] [stderr]    --> src/lib.rs:666:9
[INFO] [stderr]     |
[INFO] [stderr] 666 |         mem::replace(&mut self.root, None);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `unbounded-interval-tree` (lib) generated 1 warning
[INFO] [stderr] warning: `unbounded-interval-tree` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/unbounded_interval_tree-c37489b3fe77c57f)
[INFO] [stdout] test tests::contains_point_works_as_expected ... ok
[INFO] [stdout] test tests::clear_works_as_expected ... ok
[INFO] [stdout] test tests::consecutive_excluded_non_contiguous_difference_works_as_expected ... ok
[INFO] [stdout] test tests::contains_works_as_expected ... ok
[INFO] [stdout] test tests::cmp_works_as_expected ... ok
[INFO] [stdout] test tests::difference_works_as_expected ... ok
[INFO] [stdout] test tests::iter_works_as_expected ... ok
[INFO] [stdout] test tests::len_and_is_empty_works_as_expected ... ok
[INFO] [stdout] test tests::it_updates_value ... ok
[INFO] [stdout] test tests::it_inserts_root ... ok
[INFO] [stdout] test tests::difference_and_overlaps_with_tuple_works_as_expected ... ok
[INFO] [stdout] test tests::it_inserts_left_right_node ... ok
[INFO] [stdout] test tests::remove_random_leaf_one_node_tree_works_as_expected ... ok
[INFO] [stderr]    Doc-tests unbounded-interval-tree
[INFO] [stdout] test tests::remove_random_leaf_empty_tree_works_as_expected ... ok
[INFO] [stdout] test tests::overlap_works_as_expected ... ok
[INFO] [stdout] test tests::remove_random_leaf_works_as_expected ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::iter (line 61) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::get_interval_difference (line 224) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::is_empty (line 636) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::contains_point (line 159) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::insert (line 89) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::clear (line 655) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::len (line 616) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::remove_random_leaf (line 467) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::contains_interval (line 178) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::get_interval_overlaps (line 198) ... ok
[INFO] [stdout] test src/lib.rs - IntervalTree<Q>::contains_point (line 145) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.87s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f3e5b5b9075f92a146e218789e6debb647ddc2a82e02d1f4f3240f092cfac6b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3e5b5b9075f92a146e218789e6debb647ddc2a82e02d1f4f3240f092cfac6b5", kill_on_drop: false }`
[INFO] [stdout] f3e5b5b9075f92a146e218789e6debb647ddc2a82e02d1f4f3240f092cfac6b5