[INFO] cloning repository https://github.com/cicvedu/rustlings-semester-3-liuyd-dev
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cicvedu/rustlings-semester-3-liuyd-dev" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frustlings-semester-3-liuyd-dev", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frustlings-semester-3-liuyd-dev'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6948ab906688c2b0f63e49e0d159fcdccd1d14f8
[INFO] checking cicvedu/rustlings-semester-3-liuyd-dev against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frustlings-semester-3-liuyd-dev" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev
[INFO] finished tweaking git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev
[INFO] tweaked toml for git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4ca21c33d751ba4ebc6c28d8188ef5e28585c22261058e71ee288770645de72
[INFO] running `Command { std: "docker" "start" "-a" "e4ca21c33d751ba4ebc6c28d8188ef5e28585c22261058e71ee288770645de72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4ca21c33d751ba4ebc6c28d8188ef5e28585c22261058e71ee288770645de72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4ca21c33d751ba4ebc6c28d8188ef5e28585c22261058e71ee288770645de72", kill_on_drop: false }`
[INFO] [stdout] e4ca21c33d751ba4ebc6c28d8188ef5e28585c22261058e71ee288770645de72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcf2f65bbac87f323906828eda59ee94c66c5807a8fa98699c2a18381b5a9850
[INFO] running `Command { std: "docker" "start" "-a" "fcf2f65bbac87f323906828eda59ee94c66c5807a8fa98699c2a18381b5a9850", kill_on_drop: false }`
[INFO] [stderr]     Checking rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "fcf2f65bbac87f323906828eda59ee94c66c5807a8fa98699c2a18381b5a9850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcf2f65bbac87f323906828eda59ee94c66c5807a8fa98699c2a18381b5a9850", kill_on_drop: false }`
[INFO] [stdout] fcf2f65bbac87f323906828eda59ee94c66c5807a8fa98699c2a18381b5a9850
[INFO] checking cicvedu/rustlings-semester-3-liuyd-dev against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frustlings-semester-3-liuyd-dev" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev
[INFO] finished tweaking git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev
[INFO] tweaked toml for git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cicvedu/rustlings-semester-3-liuyd-dev 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7e8df4a37f5697e3ab89d2ca4c38b345683d70bd6c7f71751d0ec76be61ef5f
[INFO] running `Command { std: "docker" "start" "-a" "c7e8df4a37f5697e3ab89d2ca4c38b345683d70bd6c7f71751d0ec76be61ef5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7e8df4a37f5697e3ab89d2ca4c38b345683d70bd6c7f71751d0ec76be61ef5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e8df4a37f5697e3ab89d2ca4c38b345683d70bd6c7f71751d0ec76be61ef5f", kill_on_drop: false }`
[INFO] [stdout] c7e8df4a37f5697e3ab89d2ca4c38b345683d70bd6c7f71751d0ec76be61ef5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28e48ff04025dbe6e65875d01273da92bcefa2deb9bb15e12d833f4cea07b5fd
[INFO] running `Command { std: "docker" "start" "-a" "28e48ff04025dbe6e65875d01273da92bcefa2deb9bb15e12d833f4cea07b5fd", kill_on_drop: false }`
[INFO] [stderr]     Checking rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "28e48ff04025dbe6e65875d01273da92bcefa2deb9bb15e12d833f4cea07b5fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28e48ff04025dbe6e65875d01273da92bcefa2deb9bb15e12d833f4cea07b5fd", kill_on_drop: false }`
[INFO] [stdout] 28e48ff04025dbe6e65875d01273da92bcefa2deb9bb15e12d833f4cea07b5fd