[INFO] fetching crate nerdondon-hopscotch 2.7.0...
[INFO] testing nerdondon-hopscotch-2.7.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate nerdondon-hopscotch 2.7.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate nerdondon-hopscotch 2.7.0
[INFO] finished tweaking crates.io crate nerdondon-hopscotch 2.7.0
[INFO] tweaked toml for crates.io crate nerdondon-hopscotch 2.7.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nerdondon-hopscotch 2.7.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_distr v0.4.3 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d84a46bfbe0f771199e8e758e0c48005ecc46112c189ded4915692d46d79af56
[INFO] running `Command { std: "docker" "start" "-a" "d84a46bfbe0f771199e8e758e0c48005ecc46112c189ded4915692d46d79af56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d84a46bfbe0f771199e8e758e0c48005ecc46112c189ded4915692d46d79af56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84a46bfbe0f771199e8e758e0c48005ecc46112c189ded4915692d46d79af56", kill_on_drop: false }`
[INFO] [stdout] d84a46bfbe0f771199e8e758e0c48005ecc46112c189ded4915692d46d79af56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 739e7c19d119f0e7d3c409736db3e664853f91cf3b9fd07edf1a2339be6815f8
[INFO] running `Command { std: "docker" "start" "-a" "739e7c19d119f0e7d3c409736db3e664853f91cf3b9fd07edf1a2339be6815f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling nerdondon-hopscotch v2.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/skiplist.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |             /// The number of elements in the skip list.
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 106 |             length: 0,
[INFO] [stdout]     |             --------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.64s
[INFO] running `Command { std: "docker" "inspect" "739e7c19d119f0e7d3c409736db3e664853f91cf3b9fd07edf1a2339be6815f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "739e7c19d119f0e7d3c409736db3e664853f91cf3b9fd07edf1a2339be6815f8", kill_on_drop: false }`
[INFO] [stdout] 739e7c19d119f0e7d3c409736db3e664853f91cf3b9fd07edf1a2339be6815f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36d25d185c82b0b0ab4508e719ee98cd06dc1f1b1dc062b769b6464ce105c85a
[INFO] running `Command { std: "docker" "start" "-a" "36d25d185c82b0b0ab4508e719ee98cd06dc1f1b1dc062b769b6464ce105c85a", kill_on_drop: false }`
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/skiplist.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |             /// The number of elements in the skip list.
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 106 |             length: 0,
[INFO] [stdout]     |             --------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v1.4.1
[INFO] [stderr]    Compiling nerdondon-hopscotch v2.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/skiplist.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |             /// The number of elements in the skip list.
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 106 |             length: 0,
[INFO] [stdout]     |             --------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `Command { std: "docker" "inspect" "36d25d185c82b0b0ab4508e719ee98cd06dc1f1b1dc062b769b6464ce105c85a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d25d185c82b0b0ab4508e719ee98cd06dc1f1b1dc062b769b6464ce105c85a", kill_on_drop: false }`
[INFO] [stdout] 36d25d185c82b0b0ab4508e719ee98cd06dc1f1b1dc062b769b6464ce105c85a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d4151cfa98edee2748a3afff48a57f0434e36366151fc0881c1a8b91c7638b9e
[INFO] running `Command { std: "docker" "start" "-a" "d4151cfa98edee2748a3afff48a57f0434e36366151fc0881c1a8b91c7638b9e", kill_on_drop: false }`
[INFO] [stderr] warning: unused doc comment
[INFO] [stdout] 
[INFO] [stderr]    --> src/skiplist.rs:105:13
[INFO] [stdout] running 26 tests
[INFO] [stderr]     |
[INFO] [stdout] test skiplist::tests::get_an_element_at_the_tail ... ok
[INFO] [stderr] 105 |             /// The number of elements in the skip list.
[INFO] [stdout] test skiplist::tests::with_a_non_empty_skiplist_getting_a_non_existent_element_returns_none ... ok
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test skiplist::tests::with_a_non_empty_skiplist_is_empty_returns_false ... ok
[INFO] [stderr] 106 |             length: 0,
[INFO] [stdout] test skiplist::tests::get_an_element_in_the_middle ... ok
[INFO] [stderr]     |             --------- rustdoc does not generate documentation for expression fields
[INFO] [stdout] test skiplist::tests::with_a_non_empty_skiplist_first_returns_references_to_the_first_key_value_pair ... ok
[INFO] [stderr]     |
[INFO] [stdout] test skiplist::tests::get_approx_mem_usage_provides_decent_estimates ... ok
[INFO] [stderr]     = help: use `//` for a plain comment
[INFO] [stdout] test skiplist::tests::insert_can_add_an_element_after_an_existing_element ... ok
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test skiplist::tests::insert_can_add_an_element_before_an_existing_element ... ok
[INFO] [stderr] 
[INFO] [stdout] test skiplist::tests::insert_can_add_an_element_between_existing_elements ... ok
[INFO] [stderr] warning: `nerdondon-hopscotch` (lib) generated 1 warning
[INFO] [stdout] test skiplist::tests::remove_can_remove_all_elements_from_the_skip_list ... ok
[INFO] [stderr] warning: `nerdondon-hopscotch` (lib test) generated 1 warning (1 duplicate)
[INFO] [stdout] test skiplist::tests::remove_can_remove_an_item_from_the_back_of_the_skip_list ... ok
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] test skiplist::tests::remove_can_remove_an_item_from_the_front_of_the_skip_list ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nerdondon_hopscotch-a6074f876651e207)
[INFO] [stdout] test skiplist::tests::remove_can_remove_an_item_from_the_middle_of_the_skip_list ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_is_empty_returns_true ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_collect_returns_an_empty_vec ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_last_returns_none ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_remove_does_nothing ... ok
[INFO] [stdout] test skiplist::tests::get_an_element_at_the_head ... ok
[INFO] [stdout] test skiplist::tests::with_a_non_empty_skiplist_find_greater_or_equal_returns_correct_responses ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_first_returns_none ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_len_returns_zero ... ok
[INFO] [stdout] test skiplist::tests::entries_returns_a_vec_with_the_key_value_pairs_of_elements ... ok
[INFO] [stdout] test skiplist::tests::with_a_non_empty_skiplist_find_less_than_returns_correct_responses ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_get_returns_none ... ok
[INFO] [stdout] test skiplist::tests::with_an_empty_skiplist_insert_can_add_an_element ... ok
[INFO] [stdout] test skiplist::tests::with_a_non_empty_skiplist_last_returns_references_to_the_last_key_value_pair ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nerdondon_hopscotch
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::new (line 96) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::entries (line 365) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::insert (line 139) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.48s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d4151cfa98edee2748a3afff48a57f0434e36366151fc0881c1a8b91c7638b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4151cfa98edee2748a3afff48a57f0434e36366151fc0881c1a8b91c7638b9e", kill_on_drop: false }`
[INFO] [stdout] d4151cfa98edee2748a3afff48a57f0434e36366151fc0881c1a8b91c7638b9e