[INFO] crate convenient-skiplist 0.4.1 is already in cache
[INFO] testing convenient-skiplist-0.4.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate convenient-skiplist 0.4.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate convenient-skiplist 0.4.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate convenient-skiplist 0.4.1
[INFO] finished tweaking crates.io crate convenient-skiplist 0.4.1
[INFO] tweaked toml for crates.io crate convenient-skiplist 0.4.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate convenient-skiplist 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4af2bd54e4533cb83e3baee086a135428d216277469a436adcc008cf1cedd34f
[INFO] running `"docker" "start" "-a" "4af2bd54e4533cb83e3baee086a135428d216277469a436adcc008cf1cedd34f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling convenient-skiplist v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/iter.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     std::mem::replace(&mut self.curr_node, right.as_ptr());
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "4af2bd54e4533cb83e3baee086a135428d216277469a436adcc008cf1cedd34f"`
[INFO] running `"docker" "rm" "-f" "4af2bd54e4533cb83e3baee086a135428d216277469a436adcc008cf1cedd34f"`
[INFO] [stdout] 4af2bd54e4533cb83e3baee086a135428d216277469a436adcc008cf1cedd34f
[INFO] running `"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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c3600c3edee4dc4212de4d01359c87c5fe8767598ffd085b1f345053afc0e40a
[INFO] running `"docker" "start" "-a" "c3600c3edee4dc4212de4d01359c87c5fe8767598ffd085b1f345053afc0e40a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling rand_os v0.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling criterion-plot v0.4.0
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/iter.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     std::mem::replace(&mut self.curr_node, right.as_ptr());
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling bstr v0.2.9
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling tinytemplate v1.0.3
[INFO] [stderr]    Compiling csv v1.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling checkers-macros v0.5.0
[INFO] [stderr]    Compiling checkers v0.5.2
[INFO] [stderr]    Compiling criterion v0.3.0
[INFO] [stderr]    Compiling convenient-skiplist v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/iter.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     std::mem::replace(&mut self.curr_node, right.as_ptr());
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 38.72s
[INFO] running `"docker" "inspect" "c3600c3edee4dc4212de4d01359c87c5fe8767598ffd085b1f345053afc0e40a"`
[INFO] running `"docker" "rm" "-f" "c3600c3edee4dc4212de4d01359c87c5fe8767598ffd085b1f345053afc0e40a"`
[INFO] [stdout] c3600c3edee4dc4212de4d01359c87c5fe8767598ffd085b1f345053afc0e40a
[INFO] running `"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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 72cee1773a6667407af427b5783a47ac69283e877e1b6adb4d7b7dcca1d96077
[INFO] running `"docker" "start" "-a" "72cee1773a6667407af427b5783a47ac69283e877e1b6adb4d7b7dcca1d96077"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/iter.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     std::mem::replace(&mut self.curr_node, right.as_ptr());
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/iter.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     std::mem::replace(&mut self.curr_node, right.as_ptr());
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/convenient_skiplist-b90ebe2398153a24
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test iter::tests::test_inclusion_fn_range_with ... ok
[INFO] [stdout] test iter::tests::test_iterall ... ok
[INFO] [stdout] test iter::tests::test_range_pathological_no_panic ... ok
[INFO] [stdout] test iter::tests::test_range_with_all ... ok
[INFO] [stdout] test iter::tests::test_range_with_empty ... ok
[INFO] [stdout] test iter::tests::test_range_with ... ok
[INFO] [stdout] test iter::tests::test_range_empty ... ok
[INFO] [stdout] test tests::test_from ... ok
[INFO] [stdout] test tests::test_inclusive_range ... ok
[INFO] [stdout] test iter::tests::test_empty ... ok
[INFO] [stdout] test tests::test_peek ... ok
[INFO] [stdout] test iter::tests::test_range_outside ... ok
[INFO] [stdout] test tests::insert_no_panic ... ok
[INFO] [stdout] test tests::test_len ... ok
[INFO] [stdout] test tests::test_at_index ... ok
[INFO] [stdout] test tests::test_pop_min ... ok
[INFO] [stdout] test tests::test_pop_max ... ok
[INFO] [stdout] test tests::test_remove ... ok
[INFO] [stdout] test tests::test_vec_from ... ok
[INFO] [stdout] test tests::test_index_of ... ok
[INFO] [stdout] test tests::test_eq ... ok
[INFO] [stdout] test tests::test_more_complex_type ... ok
[INFO] [stdout] test tests::test_clone ... ok
[INFO] [stdout] test iter::tests::test_range_with_none ... ok
[INFO] [stdout] test tests::test_bad_index ... ok
[INFO] [stdout] test iter::tests::test_range ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/checkers_test-fc5d8e62d4f47fcd
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_allocations ... 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 convenient-skiplist
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/lib.rs - SkipList<T>::index_of (line 589) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::contains (line 465) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::insert (line 346) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::new (line 295) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::iter_all (line 924) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::peek_first (line 673) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::clear (line 1015) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::peek_last (line 690) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::len (line 551) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::pop_back (line 782) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::pop_max (line 720) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::at_index (line 623) ... ok
[INFO] [stdout] test src/lib.rs - SkipList (line 140) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::pop_front (line 803) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::remove (line 496) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::range_with (line 981) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::range (line 945) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::pop_min (line 837) ... ok
[INFO] [stdout] test src/lib.rs - SkipList<T>::remove_at (line 532) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "72cee1773a6667407af427b5783a47ac69283e877e1b6adb4d7b7dcca1d96077"`
[INFO] running `"docker" "rm" "-f" "72cee1773a6667407af427b5783a47ac69283e877e1b6adb4d7b7dcca1d96077"`
[INFO] [stdout] 72cee1773a6667407af427b5783a47ac69283e877e1b6adb4d7b7dcca1d96077