[INFO] cloning repository https://github.com/ArkArk/gitark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArkArk/gitark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkArk%2Fgitark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkArk%2Fgitark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19b3c79fe2be0096787440b6718e4b8c4e0c945b
[INFO] checking ArkArk/gitark against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkArk%2Fgitark" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ArkArk/gitark on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ArkArk/gitark
[INFO] finished tweaking git repo https://github.com/ArkArk/gitark
[INFO] tweaked toml for git repo https://github.com/ArkArk/gitark written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/ArkArk/gitark already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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] 1eb5e0bf7ac3d59b9eecd4973f5cefbe9e65196078f43af287a51a6614ff2b7f
[INFO] running `Command { std: "docker" "start" "-a" "1eb5e0bf7ac3d59b9eecd4973f5cefbe9e65196078f43af287a51a6614ff2b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eb5e0bf7ac3d59b9eecd4973f5cefbe9e65196078f43af287a51a6614ff2b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb5e0bf7ac3d59b9eecd4973f5cefbe9e65196078f43af287a51a6614ff2b7f", kill_on_drop: false }`
[INFO] [stdout] 1eb5e0bf7ac3d59b9eecd4973f5cefbe9e65196078f43af287a51a6614ff2b7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ab0e21ff00fb06d18a4622d8d9a528be0e6d02f1bc05831ce94220b4c75bd28
[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" "6ab0e21ff00fb06d18a4622d8d9a528be0e6d02f1bc05831ce94220b4c75bd28", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking gitark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/command/init.rs:32:40
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Err(e) => println!("{}", e.description()),
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/command/init.rs:32:40
[INFO] [stdout]    |
[INFO] [stdout] 32 |             Err(e) => println!("{}", e.description()),
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `type_name`
[INFO] [stdout]   --> src/command/cat_file.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let type_name = matches.value_of("type").unwrap();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `type_name`
[INFO] [stdout]   --> src/command/cat_file.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let type_name = matches.value_of("type").unwrap();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/command/cat_file.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         repo.load_object(object_name);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/command/cat_file.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         repo.load_object(object_name);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.39s
[INFO] running `Command { std: "docker" "inspect" "6ab0e21ff00fb06d18a4622d8d9a528be0e6d02f1bc05831ce94220b4c75bd28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ab0e21ff00fb06d18a4622d8d9a528be0e6d02f1bc05831ce94220b4c75bd28", kill_on_drop: false }`
[INFO] [stdout] 6ab0e21ff00fb06d18a4622d8d9a528be0e6d02f1bc05831ce94220b4c75bd28