[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star
[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-kunyuanxu-star" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-kunyuanxu-star", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-kunyuanxu-star'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83161d41ae96a2eef4b9405a831e9f9959b84664
[INFO] checking LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-kunyuanxu-star" "/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/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star 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/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9891ef5e070d7d4e435ce88a551fce56d5e99691f6149d96a231f63b28a9a34
[INFO] running `Command { std: "docker" "start" "-a" "a9891ef5e070d7d4e435ce88a551fce56d5e99691f6149d96a231f63b28a9a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9891ef5e070d7d4e435ce88a551fce56d5e99691f6149d96a231f63b28a9a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9891ef5e070d7d4e435ce88a551fce56d5e99691f6149d96a231f63b28a9a34", kill_on_drop: false }`
[INFO] [stdout] a9891ef5e070d7d4e435ce88a551fce56d5e99691f6149d96a231f63b28a9a34
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f489fff741178c074a88e8a1980d7e9219e2a8e6e57bfcb34f64aa5cc87f7646
[INFO] running `Command { std: "docker" "start" "-a" "f489fff741178c074a88e8a1980d7e9219e2a8e6e57bfcb34f64aa5cc87f7646", kill_on_drop: false }`
[INFO] [stderr]     Checking rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "f489fff741178c074a88e8a1980d7e9219e2a8e6e57bfcb34f64aa5cc87f7646", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f489fff741178c074a88e8a1980d7e9219e2a8e6e57bfcb34f64aa5cc87f7646", kill_on_drop: false }`
[INFO] [stdout] f489fff741178c074a88e8a1980d7e9219e2a8e6e57bfcb34f64aa5cc87f7646
[INFO] checking LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-kunyuanxu-star" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star 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/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-kunyuanxu-star 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7df7ad8b313392a74dc10b106177cf94cfa6f6e04f9cd28be3b987c7f5a5548
[INFO] running `Command { std: "docker" "start" "-a" "d7df7ad8b313392a74dc10b106177cf94cfa6f6e04f9cd28be3b987c7f5a5548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7df7ad8b313392a74dc10b106177cf94cfa6f6e04f9cd28be3b987c7f5a5548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7df7ad8b313392a74dc10b106177cf94cfa6f6e04f9cd28be3b987c7f5a5548", kill_on_drop: false }`
[INFO] [stdout] d7df7ad8b313392a74dc10b106177cf94cfa6f6e04f9cd28be3b987c7f5a5548
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e30a75b897dd528f107611d1673dbf3b6917a11107824825015ba181c391bfce
[INFO] running `Command { std: "docker" "start" "-a" "e30a75b897dd528f107611d1673dbf3b6917a11107824825015ba181c391bfce", kill_on_drop: false }`
[INFO] [stderr]     Checking rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "e30a75b897dd528f107611d1673dbf3b6917a11107824825015ba181c391bfce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e30a75b897dd528f107611d1673dbf3b6917a11107824825015ba181c391bfce", kill_on_drop: false }`
[INFO] [stdout] e30a75b897dd528f107611d1673dbf3b6917a11107824825015ba181c391bfce