[INFO] cloning repository https://github.com/123vivekr/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/123vivekr/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F123vivekr%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F123vivekr%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04e2608239f05cf53ff0ccb0e69063e61354dd25
[INFO] checking 123vivekr/rustlings/04e2608239f05cf53ff0ccb0e69063e61354dd25 against master#0f6e1ae67854c3c44726e8376144c16b465fe7c6 for pr-129392
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F123vivekr%2Frustlings" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/123vivekr/rustlings on toolchain 0f6e1ae67854c3c44726e8376144c16b465fe7c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/123vivekr/rustlings
[INFO] finished tweaking git repo https://github.com/123vivekr/rustlings
[INFO] tweaked toml for git repo https://github.com/123vivekr/rustlings written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/123vivekr/rustlings 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" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7dbc1ba8ad073b1d8499417307a3e083dc3c7ac99d23c28ac28be354ed573aca
[INFO] running `Command { std: "docker" "start" "-a" "7dbc1ba8ad073b1d8499417307a3e083dc3c7ac99d23c28ac28be354ed573aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7dbc1ba8ad073b1d8499417307a3e083dc3c7ac99d23c28ac28be354ed573aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dbc1ba8ad073b1d8499417307a3e083dc3c7ac99d23c28ac28be354ed573aca", kill_on_drop: false }`
[INFO] [stdout] 7dbc1ba8ad073b1d8499417307a3e083dc3c7ac99d23c28ac28be354ed573aca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbe8d9d7c1cd2a9a2bcb2facf3c5282d4219dca74fdb43828bd5985c9c6b54fb
[INFO] running `Command { std: "docker" "start" "-a" "dbe8d9d7c1cd2a9a2bcb2facf3c5282d4219dca74fdb43828bd5985c9c6b54fb", kill_on_drop: false }`
[INFO] [stderr]     Checking rustlings v4.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "dbe8d9d7c1cd2a9a2bcb2facf3c5282d4219dca74fdb43828bd5985c9c6b54fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbe8d9d7c1cd2a9a2bcb2facf3c5282d4219dca74fdb43828bd5985c9c6b54fb", kill_on_drop: false }`
[INFO] [stdout] dbe8d9d7c1cd2a9a2bcb2facf3c5282d4219dca74fdb43828bd5985c9c6b54fb