[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke [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-coldinke" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-coldinke", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2023-autumn-coldinke'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ee9d26a5cc5c1379327809a0924bd50458b8d9a0 [INFO] checking LearningOS/rust-rustlings-2023-autumn-coldinke 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-coldinke" "/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/LearningOS/rust-rustlings-2023-autumn-coldinke 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-coldinke [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke 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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded argh_derive v0.1.12 [INFO] [stderr] Downloaded argh_shared v0.1.12 [INFO] [stderr] Downloaded argh v0.1.12 [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] 7f6ecdeb5f3217b5b11d77035d20ae6a5698a84ddaf2706760212491946bbaa3 [INFO] running `Command { std: "docker" "start" "-a" "7f6ecdeb5f3217b5b11d77035d20ae6a5698a84ddaf2706760212491946bbaa3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7f6ecdeb5f3217b5b11d77035d20ae6a5698a84ddaf2706760212491946bbaa3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f6ecdeb5f3217b5b11d77035d20ae6a5698a84ddaf2706760212491946bbaa3", kill_on_drop: false }` [INFO] [stdout] 7f6ecdeb5f3217b5b11d77035d20ae6a5698a84ddaf2706760212491946bbaa3 [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] f502c360b1712c56e63acf0ff3426589d45985eab509649867d87728d87b2d11 [INFO] running `Command { std: "docker" "start" "-a" "f502c360b1712c56e63acf0ff3426589d45985eab509649867d87728d87b2d11", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling proc-macro2 v1.0.68 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling serde v1.0.188 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Checking regex-syntax v0.7.5 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Compiling serde_json v1.0.107 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Checking smallvec v1.11.1 [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking walkdir v2.4.0 [INFO] [stderr] Checking pin-project-lite v0.2.13 [INFO] [stderr] Checking bytes v1.5.0 [INFO] [stderr] Checking aho-corasick v1.1.1 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking inotify-sys v0.1.5 [INFO] [stderr] Checking parking_lot_core v0.9.8 [INFO] [stderr] Checking filetime v0.2.22 [INFO] [stderr] Checking socket2 v0.5.4 [INFO] [stderr] Checking console v0.15.7 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking mio v0.8.8 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Checking inotify v0.7.1 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking float-cmp v0.8.0 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking regex-automata v0.3.9 [INFO] [stderr] Checking notify v4.0.17 [INFO] [stderr] Checking regex v1.9.6 [INFO] [stderr] Checking indicatif v0.16.2 [INFO] [stderr] Checking predicates v1.0.8 [INFO] [stderr] Compiling serde_derive v1.0.188 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Checking tokio v1.32.0 [INFO] [stderr] Checking argh_shared v0.1.12 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Compiling argh_derive v0.1.12 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stderr] Checking argh v0.1.12 [INFO] [stderr] Checking rustlings v5.5.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.31s [INFO] running `Command { std: "docker" "inspect" "f502c360b1712c56e63acf0ff3426589d45985eab509649867d87728d87b2d11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f502c360b1712c56e63acf0ff3426589d45985eab509649867d87728d87b2d11", kill_on_drop: false }` [INFO] [stdout] f502c360b1712c56e63acf0ff3426589d45985eab509649867d87728d87b2d11 [INFO] checking LearningOS/rust-rustlings-2023-autumn-coldinke 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-coldinke" "/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/LearningOS/rust-rustlings-2023-autumn-coldinke 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-coldinke [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2023-autumn-coldinke 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] f4ce01bc174ce7f58e1e60d45b7201e03eb916d48953d1ac98b6b6b4c63d2f26 [INFO] running `Command { std: "docker" "start" "-a" "f4ce01bc174ce7f58e1e60d45b7201e03eb916d48953d1ac98b6b6b4c63d2f26", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f4ce01bc174ce7f58e1e60d45b7201e03eb916d48953d1ac98b6b6b4c63d2f26", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f4ce01bc174ce7f58e1e60d45b7201e03eb916d48953d1ac98b6b6b4c63d2f26", kill_on_drop: false }` [INFO] [stdout] f4ce01bc174ce7f58e1e60d45b7201e03eb916d48953d1ac98b6b6b4c63d2f26 [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] 7e74e3b35bd8f588037e6f3eed3f97791735de8d773001a38696c43076a63653 [INFO] running `Command { std: "docker" "start" "-a" "7e74e3b35bd8f588037e6f3eed3f97791735de8d773001a38696c43076a63653", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling proc-macro2 v1.0.68 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling serde v1.0.188 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking regex-syntax v0.7.5 [INFO] [stderr] Compiling serde_json v1.0.107 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Checking smallvec v1.11.1 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking walkdir v2.4.0 [INFO] [stderr] Checking pin-project-lite v0.2.13 [INFO] [stderr] Checking bytes v1.5.0 [INFO] [stderr] Checking aho-corasick v1.1.1 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking parking_lot_core v0.9.8 [INFO] [stderr] Checking inotify-sys v0.1.5 [INFO] [stderr] Checking mio v0.8.8 [INFO] [stderr] Checking socket2 v0.5.4 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking console v0.15.7 [INFO] [stderr] Checking filetime v0.2.22 [INFO] [stderr] Checking inotify v0.7.1 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking float-cmp v0.8.0 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking regex-automata v0.3.9 [INFO] [stderr] Checking notify v4.0.17 [INFO] [stderr] Checking regex v1.9.6 [INFO] [stderr] Compiling serde_derive v1.0.188 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Checking predicates v1.0.8 [INFO] [stderr] Checking indicatif v0.16.2 [INFO] [stderr] Checking tokio v1.32.0 [INFO] [stderr] Checking argh_shared v0.1.12 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Compiling argh_derive v0.1.12 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stderr] Checking argh v0.1.12 [INFO] [stderr] Checking rustlings v5.5.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.66s [INFO] running `Command { std: "docker" "inspect" "7e74e3b35bd8f588037e6f3eed3f97791735de8d773001a38696c43076a63653", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7e74e3b35bd8f588037e6f3eed3f97791735de8d773001a38696c43076a63653", kill_on_drop: false }` [INFO] [stdout] 7e74e3b35bd8f588037e6f3eed3f97791735de8d773001a38696c43076a63653