[INFO] fetching crate subway 0.1.2...
[INFO] testing subway-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate subway 0.1.2 into /workspace/builds/worker-111/source
[INFO] validating manifest of crates.io crate subway 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate subway 0.1.2
[INFO] finished tweaking crates.io crate subway 0.1.2
[INFO] tweaked toml for crates.io crate subway 0.1.2 written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30e02fbc1aac92aed6ab3de8f716ea629c0ca2a2647935a2413e7e916ee94d4c
[INFO] running `Command { std: "docker" "start" "-a" "30e02fbc1aac92aed6ab3de8f716ea629c0ca2a2647935a2413e7e916ee94d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30e02fbc1aac92aed6ab3de8f716ea629c0ca2a2647935a2413e7e916ee94d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e02fbc1aac92aed6ab3de8f716ea629c0ca2a2647935a2413e7e916ee94d4c", kill_on_drop: false }`
[INFO] [stdout] 30e02fbc1aac92aed6ab3de8f716ea629c0ca2a2647935a2413e7e916ee94d4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88556b9fc0621aaae5e13cda48ed10145e56a9f403581ebbb23a3b139ce418a7
[INFO] running `Command { std: "docker" "start" "-a" "88556b9fc0621aaae5e13cda48ed10145e56a9f403581ebbb23a3b139ce418a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling subway v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/skiplist.rs:574:8
[INFO] [stdout]     |
[INFO] [stdout] 574 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` 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 2m 55s
[INFO] running `Command { std: "docker" "inspect" "88556b9fc0621aaae5e13cda48ed10145e56a9f403581ebbb23a3b139ce418a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88556b9fc0621aaae5e13cda48ed10145e56a9f403581ebbb23a3b139ce418a7", kill_on_drop: false }`
[INFO] [stdout] 88556b9fc0621aaae5e13cda48ed10145e56a9f403581ebbb23a3b139ce418a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 307036408a8c7223217af6396b420b4015e9c978914d76b03c1cc78fa7e5db58
[INFO] running `Command { std: "docker" "start" "-a" "307036408a8c7223217af6396b420b4015e9c978914d76b03c1cc78fa7e5db58", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling subway v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/skiplist.rs:574:8
[INFO] [stdout]     |
[INFO] [stdout] 574 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]    --> src/skiplist.rs:574:8
[INFO] [stdout]     |
[INFO] [stdout] 574 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "307036408a8c7223217af6396b420b4015e9c978914d76b03c1cc78fa7e5db58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "307036408a8c7223217af6396b420b4015e9c978914d76b03c1cc78fa7e5db58", kill_on_drop: false }`
[INFO] [stdout] 307036408a8c7223217af6396b420b4015e9c978914d76b03c1cc78fa7e5db58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 74161eb84f8ab47dc28f85fc112c230358c1a551020cc5583e3886291ad81047
[INFO] running `Command { std: "docker" "start" "-a" "74161eb84f8ab47dc28f85fc112c230358c1a551020cc5583e3886291ad81047", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `print`
[INFO] [stderr]    --> src/skiplist.rs:574:8
[INFO] [stderr]     |
[INFO] [stderr] 574 |     fn print(&self) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `subway` (lib) generated 1 warning
[INFO] [stderr] warning: `subway` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/subway-8eb835bf1b89feb1)
[INFO] [stdout] running 22 tests
[INFO] [stdout] test skiplist::tests::test_bisect_after_when_insertion_point_is_at_end ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_after_larger_node ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_after ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_after_with_last_node ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_after_when_node_does_not_exist ... ok
[INFO] [stdout] test skiplist::tests::test_level_insert_after ... ok
[INFO] [stdout] test skiplist::tests::test_level_is_sorted ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist_insert ... ok
[INFO] [stdout] test tests::test_operations ... ok
[INFO] [stdout] test tests::test_skiplist ... ok
[INFO] [stdout] test skiplist::tests::test_node ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_when_key_exists ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist_get ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist_sorted ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist_delete ... ok
[INFO] [stdout] test skiplist::tests::test_level_insert_after_tail ... ok
[INFO] [stdout] test skiplist::tests::test_level ... ok
[INFO] [stdout] test skiplist::tests::test_level_insert ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_when_key_does_not_exist ... ok
[INFO] [stdout] test skiplist::tests::test_delete_from_level ... ok
[INFO] [stdout] test tests::test_bisect ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests subway
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::is_empty (line 492) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::len (line 476) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::get (line 347) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::bisect (line 411) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::new (line 274) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::insert (line 292) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::collect (line 450) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K,V>::delete (line 384) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "74161eb84f8ab47dc28f85fc112c230358c1a551020cc5583e3886291ad81047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74161eb84f8ab47dc28f85fc112c230358c1a551020cc5583e3886291ad81047", kill_on_drop: false }`
[INFO] [stdout] 74161eb84f8ab47dc28f85fc112c230358c1a551020cc5583e3886291ad81047