[INFO] updating cached repository https://github.com/wangyuntao/leetcode-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e88111c5e2a05af8f8f794d46af5580b83ea5841
[INFO] testing wangyuntao/leetcode-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyuntao%2Fleetcode-rs" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangyuntao/leetcode-rs 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 git repo https://github.com/wangyuntao/leetcode-rs
[INFO] finished tweaking git repo https://github.com/wangyuntao/leetcode-rs
[INFO] tweaked toml for git repo https://github.com/wangyuntao/leetcode-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/wangyuntao/leetcode-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] bbd123ecb0f775acf50adbec7ea33cbb8ccbb817c22b4028025d7ef7487b6fee
[INFO] running `"docker" "start" "-a" "bbd123ecb0f775acf50adbec7ea33cbb8ccbb817c22b4028025d7ef7487b6fee"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling leetcode-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             std::mem::replace(&mut b1.next, b2n);
[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 1.55s
[INFO] running `"docker" "inspect" "bbd123ecb0f775acf50adbec7ea33cbb8ccbb817c22b4028025d7ef7487b6fee"`
[INFO] running `"docker" "rm" "-f" "bbd123ecb0f775acf50adbec7ea33cbb8ccbb817c22b4028025d7ef7487b6fee"`
[INFO] [stdout] bbd123ecb0f775acf50adbec7ea33cbb8ccbb817c22b4028025d7ef7487b6fee
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b44d0c99192e586660efb787277611f68ab791603ed619460120d0fed77d89d6
[INFO] running `"docker" "start" "-a" "b44d0c99192e586660efb787277611f68ab791603ed619460120d0fed77d89d6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling leetcode-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             std::mem::replace(&mut b1.next, b2n);
[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/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             std::mem::replace(&mut b1.next, b2n);
[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 1.29s
[INFO] running `"docker" "inspect" "b44d0c99192e586660efb787277611f68ab791603ed619460120d0fed77d89d6"`
[INFO] running `"docker" "rm" "-f" "b44d0c99192e586660efb787277611f68ab791603ed619460120d0fed77d89d6"`
[INFO] [stdout] b44d0c99192e586660efb787277611f68ab791603ed619460120d0fed77d89d6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 6380b79fd197199b6a463d1023cfe4c4230a0102b0d3d622a1c0c1718d4ebfd8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "6380b79fd197199b6a463d1023cfe4c4230a0102b0d3d622a1c0c1718d4ebfd8"`
[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/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             std::mem::replace(&mut b1.next, b2n);
[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/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             std::mem::replace(&mut b1.next, b2n);
[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 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode_rs-18f369a5bfe3a9a1
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test p0067_add_binary::tests::test ... ok
[INFO] [stdout] test p0088_merge_sorted_array::tests::test ... ok
[INFO] [stdout] test p0066_plus_one::tests::test ... ok
[INFO] [stdout] test p0083_remove_duplicates_from_sorted_list::tests::test ... ok
[INFO] [stdout] test p0058_length_of_last_word::tests::test ... ok
[INFO] [stdout] test p0053_maximum_subarray::tests::test ... ok
[INFO] [stdout] test p0100_same_tree::tests::test ... ok
[INFO] [stdout] test p0038_count_and_say::tests::test ... ok
[INFO] [stdout] test p0168_excel_sheet_column_title::tests::test ... ok
[INFO] [stdout] test p0155_min_stack::tests::test ... ok
[INFO] [stdout] test p0101_symmetric_tree::tests::test ... ok
[INFO] [stdout] test p0104_maximum_depth_of_binary_tree::tests::test ... ok
[INFO] [stdout] test p0121_best_time_to_buy_and_sell_stock::tests::test ... ok
[INFO] [stdout] test p0258_add_digits::tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode_rs-1a5c6bc08881a4b0
[INFO] [stderr]    Doc-tests leetcode-rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6380b79fd197199b6a463d1023cfe4c4230a0102b0d3d622a1c0c1718d4ebfd8"`
[INFO] running `"docker" "rm" "-f" "6380b79fd197199b6a463d1023cfe4c4230a0102b0d3d622a1c0c1718d4ebfd8"`
[INFO] [stdout] 6380b79fd197199b6a463d1023cfe4c4230a0102b0d3d622a1c0c1718d4ebfd8