[INFO] cloning repository https://github.com/JeffLi01/learn_rust_by_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JeffLi01/learn_rust_by_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffLi01%2Flearn_rust_by_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffLi01%2Flearn_rust_by_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 257295b484802577a687ba5afe49c4cea767534e
[INFO] testing JeffLi01/learn_rust_by_test against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffLi01%2Flearn_rust_by_test" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JeffLi01/learn_rust_by_test on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JeffLi01/learn_rust_by_test
[INFO] finished tweaking git repo https://github.com/JeffLi01/learn_rust_by_test
[INFO] tweaked toml for git repo https://github.com/JeffLi01/learn_rust_by_test written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/JeffLi01/learn_rust_by_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 68becbaf7e47c092cb627db85dc025fe68ad95bfd2568761e64bae802c59d868
[INFO] running `Command { std: "docker" "start" "-a" "68becbaf7e47c092cb627db85dc025fe68ad95bfd2568761e64bae802c59d868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68becbaf7e47c092cb627db85dc025fe68ad95bfd2568761e64bae802c59d868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68becbaf7e47c092cb627db85dc025fe68ad95bfd2568761e64bae802c59d868", kill_on_drop: false }`
[INFO] [stdout] 68becbaf7e47c092cb627db85dc025fe68ad95bfd2568761e64bae802c59d868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bb5750c31af3cd68188638693d65f9cca69ecd40c231214e178a1ec85a6e451e
[INFO] running `Command { std: "docker" "start" "-a" "bb5750c31af3cd68188638693d65f9cca69ecd40c231214e178a1ec85a6e451e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling structview_derive v1.1.0
[INFO] [stderr]    Compiling structview v1.1.0
[INFO] [stderr]    Compiling learn_rust_by_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/leet_code/problem_00001.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[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: `two_sum`
[INFO] [stdout]  --> src/leet_code/problem_00001.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[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 10.36s
[INFO] running `Command { std: "docker" "inspect" "bb5750c31af3cd68188638693d65f9cca69ecd40c231214e178a1ec85a6e451e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb5750c31af3cd68188638693d65f9cca69ecd40c231214e178a1ec85a6e451e", kill_on_drop: false }`
[INFO] [stdout] bb5750c31af3cd68188638693d65f9cca69ecd40c231214e178a1ec85a6e451e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdd2778b59b5a1063c7c22e5e5f71ff91c5e3ae1fb0fe739156c36392d97eb51
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fdd2778b59b5a1063c7c22e5e5f71ff91c5e3ae1fb0fe739156c36392d97eb51", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust_by_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "fdd2778b59b5a1063c7c22e5e5f71ff91c5e3ae1fb0fe739156c36392d97eb51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdd2778b59b5a1063c7c22e5e5f71ff91c5e3ae1fb0fe739156c36392d97eb51", kill_on_drop: false }`
[INFO] [stdout] fdd2778b59b5a1063c7c22e5e5f71ff91c5e3ae1fb0fe739156c36392d97eb51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6efedae057d0a62d148e1b4abd5e6c015631482b828181276431e45f904e5af
[INFO] running `Command { std: "docker" "start" "-a" "b6efedae057d0a62d148e1b4abd5e6c015631482b828181276431e45f904e5af", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 9 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn_rust_by_test-d8f6adfd87d20418)
[INFO] [stdout] test design_patterns::modify_enum_values::test_more_variants ... ok
[INFO] [stdout] test design_patterns::modify_enum_values::test_single ... ok
[INFO] [stdout] test learn_byteorder::test_write ... ok
[INFO] [stdout] test learn_error::test_create ... ok
[INFO] [stdout] test learn_error::test_display ... ok
[INFO] [stdout] test learn_structview::test_read ... ok
[INFO] [stdout] test learn_byteorder::test_read ... ok
[INFO] [stdout] test learn_structview::test_write ... ok
[INFO] [stdout] test leet_code::problem_00001::test_two_sum ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b6efedae057d0a62d148e1b4abd5e6c015631482b828181276431e45f904e5af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6efedae057d0a62d148e1b4abd5e6c015631482b828181276431e45f904e5af", kill_on_drop: false }`
[INFO] [stdout] b6efedae057d0a62d148e1b4abd5e6c015631482b828181276431e45f904e5af