[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-Snailist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-Snailist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbdbffa72b203a05f2edf9e6a360f6009b6b7f14
[INFO] checking LearningOS/rust-rustlings-2023-autumn-Snailist against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-Snailist" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-Snailist 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d290b95eb52628ec72ef90b001e19e3a4929dde1722d58b21d547bb67fa36f77
[INFO] running `Command { std: "docker" "start" "-a" "d290b95eb52628ec72ef90b001e19e3a4929dde1722d58b21d547bb67fa36f77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d290b95eb52628ec72ef90b001e19e3a4929dde1722d58b21d547bb67fa36f77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d290b95eb52628ec72ef90b001e19e3a4929dde1722d58b21d547bb67fa36f77", kill_on_drop: false }`
[INFO] [stdout] d290b95eb52628ec72ef90b001e19e3a4929dde1722d58b21d547bb67fa36f77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83abbc89077b2b0b838c3e744b5e12076cdf9ec6f07fa4973eb98d65db2e20dc
[INFO] running `Command { std: "docker" "start" "-a" "83abbc89077b2b0b838c3e744b5e12076cdf9ec6f07fa4973eb98d65db2e20dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]    Compiling serde_json v1.0.102
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex-automata v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.171
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking predicates v1.0.8
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking escargot v0.4.0
[INFO] [stderr]     Checking rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.96s
[INFO] running `Command { std: "docker" "inspect" "83abbc89077b2b0b838c3e744b5e12076cdf9ec6f07fa4973eb98d65db2e20dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83abbc89077b2b0b838c3e744b5e12076cdf9ec6f07fa4973eb98d65db2e20dc", kill_on_drop: false }`
[INFO] [stdout] 83abbc89077b2b0b838c3e744b5e12076cdf9ec6f07fa4973eb98d65db2e20dc