[INFO] cloning repository https://github.com/ChenDvorak/arguments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChenDvorak/arguments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChenDvorak%2Farguments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChenDvorak%2Farguments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0ae12eb9c088a1f201eb0a4ca2e7c5f28a006ef
[INFO] testing ChenDvorak/arguments against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChenDvorak%2Farguments" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChenDvorak/arguments on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChenDvorak/arguments
[INFO] finished tweaking git repo https://github.com/ChenDvorak/arguments
[INFO] tweaked toml for git repo https://github.com/ChenDvorak/arguments written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/ChenDvorak/arguments already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 944e61fefd0ce23ef7719a7bcb96130397e8cc40b46eb31695f4dd04a2bf3031
[INFO] running `Command { std: "docker" "start" "-a" "944e61fefd0ce23ef7719a7bcb96130397e8cc40b46eb31695f4dd04a2bf3031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "944e61fefd0ce23ef7719a7bcb96130397e8cc40b46eb31695f4dd04a2bf3031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "944e61fefd0ce23ef7719a7bcb96130397e8cc40b46eb31695f4dd04a2bf3031", kill_on_drop: false }`
[INFO] [stdout] 944e61fefd0ce23ef7719a7bcb96130397e8cc40b46eb31695f4dd04a2bf3031
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86a8da9d08c0b0daa48081790dc0d621cf8925fa2ee6290bf17c8fcb72a37e9b
[INFO] running `Command { std: "docker" "start" "-a" "86a8da9d08c0b0daa48081790dc0d621cf8925fa2ee6290bf17c8fcb72a37e9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling arguments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/linked_list.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     value: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "86a8da9d08c0b0daa48081790dc0d621cf8925fa2ee6290bf17c8fcb72a37e9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86a8da9d08c0b0daa48081790dc0d621cf8925fa2ee6290bf17c8fcb72a37e9b", kill_on_drop: false }`
[INFO] [stdout] 86a8da9d08c0b0daa48081790dc0d621cf8925fa2ee6290bf17c8fcb72a37e9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 474d1a09ea8637d77366da1e441faad3d9f0c130300193e57c44edc07e38a2bd
[INFO] running `Command { std: "docker" "start" "-a" "474d1a09ea8637d77366da1e441faad3d9f0c130300193e57c44edc07e38a2bd", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/linked_list.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     value: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling arguments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/linked_list.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     value: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "474d1a09ea8637d77366da1e441faad3d9f0c130300193e57c44edc07e38a2bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "474d1a09ea8637d77366da1e441faad3d9f0c130300193e57c44edc07e38a2bd", kill_on_drop: false }`
[INFO] [stdout] 474d1a09ea8637d77366da1e441faad3d9f0c130300193e57c44edc07e38a2bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5ba6893c521c809953dfe29bee4e03334b1544db63a2f7eb164ea021558d05c7
[INFO] running `Command { std: "docker" "start" "-a" "5ba6893c521c809953dfe29bee4e03334b1544db63a2f7eb164ea021558d05c7", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]  --> src/linked_list.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     value: T,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `arguments` (lib) generated 1 warning
[INFO] [stderr] warning: `arguments` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/arguments-b1bff3a76b475bf4)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test add_two_numbers::test::test_708 ... ok
[INFO] [stdout] test length_of_longest_substring::tests::aaa_len_1 ... ok
[INFO] [stdout] test length_of_longest_substring::tests::abc_len_3 ... ok
[INFO] [stdout] test length_of_longest_substring::tests::pwwkew_len_3 ... ok
[INFO] [stdout] test linked_list::test::test_empty ... ok
[INFO] [stdout] test linked_list::test::test_len_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 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/arguments-8f286ed161efb5c2)
[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 arguments
[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" "5ba6893c521c809953dfe29bee4e03334b1544db63a2f7eb164ea021558d05c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ba6893c521c809953dfe29bee4e03334b1544db63a2f7eb164ea021558d05c7", kill_on_drop: false }`
[INFO] [stdout] 5ba6893c521c809953dfe29bee4e03334b1544db63a2f7eb164ea021558d05c7