[INFO] cloning repository https://github.com/raagnair/leetcrab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raagnair/leetcrab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraagnair%2Fleetcrab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraagnair%2Fleetcrab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cd2419486187e0da3ac28f16659e7abef27572a
[INFO] checking raagnair/leetcrab against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraagnair%2Fleetcrab" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/raagnair/leetcrab
[INFO] finished tweaking git repo https://github.com/raagnair/leetcrab
[INFO] tweaked toml for git repo https://github.com/raagnair/leetcrab written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/raagnair/leetcrab on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/raagnair/leetcrab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51189649d11e17bc7fc9b44cc37e141b64a10c824dd3aabcdbff67c332222720
[INFO] running `Command { std: "docker" "start" "-a" "51189649d11e17bc7fc9b44cc37e141b64a10c824dd3aabcdbff67c332222720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51189649d11e17bc7fc9b44cc37e141b64a10c824dd3aabcdbff67c332222720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51189649d11e17bc7fc9b44cc37e141b64a10c824dd3aabcdbff67c332222720", kill_on_drop: false }`
[INFO] [stdout] 51189649d11e17bc7fc9b44cc37e141b64a10c824dd3aabcdbff67c332222720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8789a0ea1c00e5e8fb001767bf6503d3f347b4f848c8bca7a2687a105c74db5e
[INFO] running `Command { std: "docker" "start" "-a" "8789a0ea1c00e5e8fb001767bf6503d3f347b4f848c8bca7a2687a105c74db5e", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcrab v0.71.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `last_iter` is never read
[INFO] [stdout]   --> src/solutions/s0017_letter_combinations.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut last_iter = vec![];
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last_iter` is never read
[INFO] [stdout]   --> src/solutions/s0017_letter_combinations.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut last_iter = vec![];
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "8789a0ea1c00e5e8fb001767bf6503d3f347b4f848c8bca7a2687a105c74db5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8789a0ea1c00e5e8fb001767bf6503d3f347b4f848c8bca7a2687a105c74db5e", kill_on_drop: false }`
[INFO] [stdout] 8789a0ea1c00e5e8fb001767bf6503d3f347b4f848c8bca7a2687a105c74db5e