[INFO] cloning repository https://github.com/wangyuntao/leetcode-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wangyuntao/leetcode-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyuntao%2Fleetcode-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyuntao%2Fleetcode-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e88111c5e2a05af8f8f794d46af5580b83ea5841
[INFO] testing wangyuntao/leetcode-rs against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyuntao%2Fleetcode-rs" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangyuntao/leetcode-rs on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] crate git repo https://github.com/wangyuntao/leetcode-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de9f2a1ac832866d0362988d5f90196bcf4ce18aacb7c741c93d8b63bdea291e
[INFO] running `Command { std: "docker" "start" "-a" "de9f2a1ac832866d0362988d5f90196bcf4ce18aacb7c741c93d8b63bdea291e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de9f2a1ac832866d0362988d5f90196bcf4ce18aacb7c741c93d8b63bdea291e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de9f2a1ac832866d0362988d5f90196bcf4ce18aacb7c741c93d8b63bdea291e", kill_on_drop: false }`
[INFO] [stdout] de9f2a1ac832866d0362988d5f90196bcf4ce18aacb7c741c93d8b63bdea291e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d2ab24e459eb418ab3f147b35fb6978de48d2dccd846bf33d90bb106d324df6
[INFO] running `Command { std: "docker" "start" "-a" "6d2ab24e459eb418ab3f147b35fb6978de48d2dccd846bf33d90bb106d324df6", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             std::mem::replace(&mut b1.next, b2n);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "6d2ab24e459eb418ab3f147b35fb6978de48d2dccd846bf33d90bb106d324df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d2ab24e459eb418ab3f147b35fb6978de48d2dccd846bf33d90bb106d324df6", kill_on_drop: false }`
[INFO] [stdout] 6d2ab24e459eb418ab3f147b35fb6978de48d2dccd846bf33d90bb106d324df6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2fbf46f247dfbabb7684fa443500800142655f13b4f3d9e7894f420b3a4dc1a
[INFO] running `Command { std: "docker" "start" "-a" "e2fbf46f247dfbabb7684fa443500800142655f13b4f3d9e7894f420b3a4dc1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             std::mem::replace(&mut b1.next, b2n);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/p0083_remove_duplicates_from_sorted_list.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             std::mem::replace(&mut b1.next, b2n);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "e2fbf46f247dfbabb7684fa443500800142655f13b4f3d9e7894f420b3a4dc1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2fbf46f247dfbabb7684fa443500800142655f13b4f3d9e7894f420b3a4dc1a", kill_on_drop: false }`
[INFO] [stdout] e2fbf46f247dfbabb7684fa443500800142655f13b4f3d9e7894f420b3a4dc1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eeccfc52b9e78fb2e412979a87f3e6149ba88171eca8d8656faa2fe36acb21f7
[INFO] running `Command { std: "docker" "start" "-a" "eeccfc52b9e78fb2e412979a87f3e6149ba88171eca8d8656faa2fe36acb21f7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.25s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/leetcode_rs-b7085cdcd86e1c8c)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test p0038_count_and_say::tests::test ... ok
[INFO] [stdout] test p0053_maximum_subarray::tests::test ... ok
[INFO] [stdout] test p0058_length_of_last_word::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 p0067_add_binary::tests::test ... ok
[INFO] [stdout] test p0088_merge_sorted_array::tests::test ... ok
[INFO] [stdout] test p0100_same_tree::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 p0155_min_stack::tests::test ... ok
[INFO] [stdout] test p0168_excel_sheet_column_title::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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/leetcode_rs-2d5477eb26f60ce9)
[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; finished in 0.00s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eeccfc52b9e78fb2e412979a87f3e6149ba88171eca8d8656faa2fe36acb21f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeccfc52b9e78fb2e412979a87f3e6149ba88171eca8d8656faa2fe36acb21f7", kill_on_drop: false }`
[INFO] [stdout] eeccfc52b9e78fb2e412979a87f3e6149ba88171eca8d8656faa2fe36acb21f7