[INFO] fetching crate subway 0.1.2...
[INFO] testing subway-0.1.2 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate subway 0.1.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate subway 0.1.2 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7684929648ccdf671a5dee7799753f0b41c3d3de828e3d7a1254f8b187b0f1a
[INFO] running `Command { std: "docker" "start" "-a" "a7684929648ccdf671a5dee7799753f0b41c3d3de828e3d7a1254f8b187b0f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7684929648ccdf671a5dee7799753f0b41c3d3de828e3d7a1254f8b187b0f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7684929648ccdf671a5dee7799753f0b41c3d3de828e3d7a1254f8b187b0f1a", kill_on_drop: false }`
[INFO] [stdout] a7684929648ccdf671a5dee7799753f0b41c3d3de828e3d7a1254f8b187b0f1a
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dec480045213db60199069c66e045d50d05c7a4b789aa2b99a70f0f559b12d5
[INFO] running `Command { std: "docker" "start" "-a" "0dec480045213db60199069c66e045d50d05c7a4b789aa2b99a70f0f559b12d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling subway v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/skiplist.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     up: WeakLink<K, V>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `Command { std: "docker" "inspect" "0dec480045213db60199069c66e045d50d05c7a4b789aa2b99a70f0f559b12d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dec480045213db60199069c66e045d50d05c7a4b789aa2b99a70f0f559b12d5", kill_on_drop: false }`
[INFO] [stdout] 0dec480045213db60199069c66e045d50d05c7a4b789aa2b99a70f0f559b12d5
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01be507dc285a501afe2d833f00521698e0cf289a4b8ee8e5e1ca8a0945b8264
[INFO] running `Command { std: "docker" "start" "-a" "01be507dc285a501afe2d833f00521698e0cf289a4b8ee8e5e1ca8a0945b8264", kill_on_drop: false }`
[INFO] [stderr]    Compiling subway v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/skiplist.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     up: WeakLink<K, V>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `up`
[INFO] [stdout]   --> src/skiplist.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     up: WeakLink<K, V>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "01be507dc285a501afe2d833f00521698e0cf289a4b8ee8e5e1ca8a0945b8264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01be507dc285a501afe2d833f00521698e0cf289a4b8ee8e5e1ca8a0945b8264", kill_on_drop: false }`
[INFO] [stdout] 01be507dc285a501afe2d833f00521698e0cf289a4b8ee8e5e1ca8a0945b8264
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 70c100b3aabec4a3d8e39f7686f84f33c8c95cc89de737718bb98ed060773175
[INFO] running `Command { std: "docker" "start" "-a" "70c100b3aabec4a3d8e39f7686f84f33c8c95cc89de737718bb98ed060773175", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `up`
[INFO] [stderr]   --> src/skiplist.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     up: WeakLink<K, V>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `up`
[INFO] [stderr]   --> src/skiplist.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     up: WeakLink<K, V>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/subway-5a47ebe2d5daf3e8)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test skiplist::tests::test_bisect_after ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_after_larger_node ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_after_when_insertion_point_is_at_end ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_when_key_exists ... ok
[INFO] [stdout] test skiplist::tests::test_bisect_when_key_does_not_exist ... 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_delete_from_level ... ok
[INFO] [stdout] test skiplist::tests::test_level ... ok
[INFO] [stdout] test skiplist::tests::test_level_insert ... 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_skiplist_sorted ... ok
[INFO] [stdout] test tests::test_bisect ... ok
[INFO] [stdout] test skiplist::tests::test_level_insert_after_tail ... ok
[INFO] [stdout] test skiplist::tests::test_node ... ok
[INFO] [stdout] test skiplist::tests::test_level_insert_after ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist ... ok
[INFO] [stdout] test skiplist::tests::test_level_is_sorted ... ok
[INFO] [stdout] test skiplist::tests::test_skiplist_get ... ok
[INFO] [stderr]    Doc-tests subway
[INFO] [stdout] test skiplist::tests::test_skiplist_delete ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K, V>::insert (line 292) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K, V>::delete (line 384) ... 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>::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>::collect (line 450) ... ok
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<K, V>::bisect (line 411) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.36s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "70c100b3aabec4a3d8e39f7686f84f33c8c95cc89de737718bb98ed060773175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70c100b3aabec4a3d8e39f7686f84f33c8c95cc89de737718bb98ed060773175", kill_on_drop: false }`
[INFO] [stdout] 70c100b3aabec4a3d8e39f7686f84f33c8c95cc89de737718bb98ed060773175