[INFO] cloning repository https://github.com/xabiercasado/rust_training
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xabiercasado/rust_training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxabiercasado%2Frust_training", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxabiercasado%2Frust_training'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81c785c090f01e131a0b8dc936dda267af05ab69
[INFO] checking xabiercasado/rust_training against master#ac385a5af6d9fa8399a0cec799833cd28324abf8 for pr-125107
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxabiercasado%2Frust_training" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xabiercasado/rust_training on toolchain ac385a5af6d9fa8399a0cec799833cd28324abf8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xabiercasado/rust_training
[INFO] finished tweaking git repo https://github.com/xabiercasado/rust_training
[INFO] tweaked toml for git repo https://github.com/xabiercasado/rust_training written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xabiercasado/rust_training 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" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded leetcode_test v0.1.2
[INFO] [stderr]   Downloaded leetcode_prelude v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd019b391b651a5b9d00cc5b1155d50c6b415bc79e936142e18de535582c93ba
[INFO] running `Command { std: "docker" "start" "-a" "cd019b391b651a5b9d00cc5b1155d50c6b415bc79e936142e18de535582c93ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd019b391b651a5b9d00cc5b1155d50c6b415bc79e936142e18de535582c93ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd019b391b651a5b9d00cc5b1155d50c6b415bc79e936142e18de535582c93ba", kill_on_drop: false }`
[INFO] [stdout] cd019b391b651a5b9d00cc5b1155d50c6b415bc79e936142e18de535582c93ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f6a452efe1732d23dfd716dc64a34c65444ebc08b90ace56e241a769408dbb8
[INFO] running `Command { std: "docker" "start" "-a" "7f6a452efe1732d23dfd716dc64a34c65444ebc08b90ace56e241a769408dbb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling leetcode_test v0.1.2
[INFO] [stderr]     Checking leetcode_prelude v0.2.3
[INFO] [stderr]     Checking rust_training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `leetcode_prelude::vec_string`
[INFO] [stdout]  --> src/sprint1/exercise2_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use leetcode_prelude::vec_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::vec_string`
[INFO] [stdout]  --> src/sprint1/exercise2_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use leetcode_prelude::vec_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "7f6a452efe1732d23dfd716dc64a34c65444ebc08b90ace56e241a769408dbb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f6a452efe1732d23dfd716dc64a34c65444ebc08b90ace56e241a769408dbb8", kill_on_drop: false }`
[INFO] [stdout] 7f6a452efe1732d23dfd716dc64a34c65444ebc08b90ace56e241a769408dbb8