[INFO] cloning repository https://github.com/aviplayer/linked_list_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aviplayer/linked_list_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faviplayer%2Flinked_list_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faviplayer%2Flinked_list_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b900f4a947ed2af8ce1c6d3cc89efb175ed2ac7
[INFO] testing aviplayer/linked_list_rust against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faviplayer%2Flinked_list_rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aviplayer/linked_list_rust on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aviplayer/linked_list_rust
[INFO] finished tweaking git repo https://github.com/aviplayer/linked_list_rust
[INFO] tweaked toml for git repo https://github.com/aviplayer/linked_list_rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/aviplayer/linked_list_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7742c4c296d4f43397f08b62f0f4afac3928e23a340fa07d1c49bcd07d85a77
[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" "b7742c4c296d4f43397f08b62f0f4afac3928e23a340fa07d1c49bcd07d85a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7742c4c296d4f43397f08b62f0f4afac3928e23a340fa07d1c49bcd07d85a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7742c4c296d4f43397f08b62f0f4afac3928e23a340fa07d1c49bcd07d85a77", kill_on_drop: false }`
[INFO] [stdout] b7742c4c296d4f43397f08b62f0f4afac3928e23a340fa07d1c49bcd07d85a77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-09-08" "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] 8d524aee01de32c3e3e607ffa59c9bebb9cd2138587ad8d391f3e7d6f1b42f8f
[INFO] running `Command { std: "docker" "start" "-a" "8d524aee01de32c3e3e607ffa59c9bebb9cd2138587ad8d391f3e7d6f1b42f8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling binary_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/binary.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Left = 0,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/binary.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Right = 1,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find1`
[INFO] [stdout]   --> src/binary.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn find1(node: &mut NodeOption, val: i32) -> Result<&mut NodeOption, Error> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `Command { std: "docker" "inspect" "8d524aee01de32c3e3e607ffa59c9bebb9cd2138587ad8d391f3e7d6f1b42f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d524aee01de32c3e3e607ffa59c9bebb9cd2138587ad8d391f3e7d6f1b42f8f", kill_on_drop: false }`
[INFO] [stdout] 8d524aee01de32c3e3e607ffa59c9bebb9cd2138587ad8d391f3e7d6f1b42f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9890bb1842b371ad633bcff8b612f4638574420e8e153d4360aa2a2502c99d4e
[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" "9890bb1842b371ad633bcff8b612f4638574420e8e153d4360aa2a2502c99d4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling binary_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/binary.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Left = 0,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/binary.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Right = 1,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find1`
[INFO] [stdout]   --> src/binary.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn find1(node: &mut NodeOption, val: i32) -> Result<&mut NodeOption, Error> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "9890bb1842b371ad633bcff8b612f4638574420e8e153d4360aa2a2502c99d4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9890bb1842b371ad633bcff8b612f4638574420e8e153d4360aa2a2502c99d4e", kill_on_drop: false }`
[INFO] [stdout] 9890bb1842b371ad633bcff8b612f4638574420e8e153d4360aa2a2502c99d4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 479e23c6ee9c64cf3c48fdabfe2fc957c17672da9857e1eb7546ed3063279ab2
[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" "479e23c6ee9c64cf3c48fdabfe2fc957c17672da9857e1eb7546ed3063279ab2", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/binary.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     Left = 0,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/binary.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Right = 1,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find1`
[INFO] [stderr]   --> src/binary.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn find1(node: &mut NodeOption, val: i32) -> Result<&mut NodeOption, Error> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `binary_tree` (bin "binary_tree" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/binary_tree-8d8cca6acd253ffa)
[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" "479e23c6ee9c64cf3c48fdabfe2fc957c17672da9857e1eb7546ed3063279ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "479e23c6ee9c64cf3c48fdabfe2fc957c17672da9857e1eb7546ed3063279ab2", kill_on_drop: false }`
[INFO] [stdout] 479e23c6ee9c64cf3c48fdabfe2fc957c17672da9857e1eb7546ed3063279ab2