[INFO] cloning repository https://github.com/Vechro/roman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vechro/roman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVechro%2Froman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVechro%2Froman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e4ee4490bd54f9db21b049dff0bb74ff188de5c
[INFO] checking Vechro/roman against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVechro%2Froman" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vechro/roman on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vechro/roman
[INFO] finished tweaking git repo https://github.com/Vechro/roman
[INFO] tweaked toml for git repo https://github.com/Vechro/roman written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Vechro/roman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] 1800c187f3131dd25c0d60715961b7a6b529f633afb670d37d746c5ff5b69fd9
[INFO] running `Command { std: "docker" "start" "-a" "1800c187f3131dd25c0d60715961b7a6b529f633afb670d37d746c5ff5b69fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1800c187f3131dd25c0d60715961b7a6b529f633afb670d37d746c5ff5b69fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1800c187f3131dd25c0d60715961b7a6b529f633afb670d37d746c5ff5b69fd9", kill_on_drop: false }`
[INFO] [stdout] 1800c187f3131dd25c0d60715961b7a6b529f633afb670d37d746c5ff5b69fd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 521ffa9022d5c72bb0d86cdbc750b62e4153a9a2f9a9d415418c65f43ea6b6d9
[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" "521ffa9022d5c72bb0d86cdbc750b62e4153a9a2f9a9d415418c65f43ea6b6d9", kill_on_drop: false }`
[INFO] [stderr]     Checking roman v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::arabic_to_roman`
[INFO] [stdout]   --> src/test.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     use crate::arabic_to_roman;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 0.91s
[INFO] running `Command { std: "docker" "inspect" "521ffa9022d5c72bb0d86cdbc750b62e4153a9a2f9a9d415418c65f43ea6b6d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "521ffa9022d5c72bb0d86cdbc750b62e4153a9a2f9a9d415418c65f43ea6b6d9", kill_on_drop: false }`
[INFO] [stdout] 521ffa9022d5c72bb0d86cdbc750b62e4153a9a2f9a9d415418c65f43ea6b6d9