[INFO] cloning repository https://github.com/MutantBaby/Rust-By-Practice [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MutantBaby/Rust-By-Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMutantBaby%2FRust-By-Practice", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMutantBaby%2FRust-By-Practice'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c2b7f6e6489efe9f6c37dd4afa2e55d207d14f2f [INFO] checking MutantBaby/Rust-By-Practice against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMutantBaby%2FRust-By-Practice" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MutantBaby/Rust-By-Practice 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/MutantBaby/Rust-By-Practice [INFO] finished tweaking git repo https://github.com/MutantBaby/Rust-By-Practice [INFO] tweaked toml for git repo https://github.com/MutantBaby/Rust-By-Practice written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/MutantBaby/Rust-By-Practice 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] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded thiserror-impl v1.0.52 [INFO] [stderr] Downloaded utf8_slice v1.0.0 [INFO] [stderr] Downloaded confy v0.5.1 [INFO] [stderr] Downloaded thiserror v1.0.52 [INFO] [stderr] Downloaded proc-macro2 v1.0.71 [INFO] [stderr] Downloaded anyhow v1.0.77 [INFO] [stderr] Downloaded syn v2.0.43 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c642d2afcb03be040f8b5da72a6246fb19ea5ea40bbc7d5ea8b1d548d716888c [INFO] running `Command { std: "docker" "start" "-a" "c642d2afcb03be040f8b5da72a6246fb19ea5ea40bbc7d5ea8b1d548d716888c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c642d2afcb03be040f8b5da72a6246fb19ea5ea40bbc7d5ea8b1d548d716888c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c642d2afcb03be040f8b5da72a6246fb19ea5ea40bbc7d5ea8b1d548d716888c", kill_on_drop: false }` [INFO] [stdout] c642d2afcb03be040f8b5da72a6246fb19ea5ea40bbc7d5ea8b1d548d716888c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9a325b9a0cb4f75c56213a3c287e7a4dcd92dc7db5f473770f10e0524f9a48a5 [INFO] running `Command { std: "docker" "start" "-a" "9a325b9a0cb4f75c56213a3c287e7a4dcd92dc7db5f473770f10e0524f9a48a5", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.151 [INFO] [stderr] Compiling proc-macro2 v1.0.71 [INFO] [stderr] Compiling serde v1.0.193 [INFO] [stderr] Compiling crossbeam-utils v0.8.18 [INFO] [stderr] Compiling thiserror v1.0.52 [INFO] [stderr] Compiling anyhow v1.0.77 [INFO] [stderr] Compiling signal-hook v0.3.17 [INFO] [stderr] Compiling serde_json v1.0.108 [INFO] [stderr] Checking bitflags v2.4.1 [INFO] [stderr] Checking utf8_slice v1.0.0 [INFO] [stderr] Checking exitcode v1.1.2 [INFO] [stderr] Checking crossbeam-channel v0.5.10 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.43 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking dirs-sys v0.3.7 [INFO] [stderr] Checking parking_lot_core v0.9.9 [INFO] [stderr] Checking mio v0.8.9 [INFO] [stderr] Checking nix v0.27.1 [INFO] [stderr] Checking socket2 v0.5.5 [INFO] [stderr] Checking directories v4.0.1 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking ctrlc v3.4.2 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Compiling thiserror-impl v1.0.52 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Compiling serde_derive v1.0.193 [INFO] [stderr] Checking tokio v1.35.1 [INFO] [stderr] Checking confy v0.5.1 [INFO] [stderr] Checking rust-practice v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.48s [INFO] running `Command { std: "docker" "inspect" "9a325b9a0cb4f75c56213a3c287e7a4dcd92dc7db5f473770f10e0524f9a48a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a325b9a0cb4f75c56213a3c287e7a4dcd92dc7db5f473770f10e0524f9a48a5", kill_on_drop: false }` [INFO] [stdout] 9a325b9a0cb4f75c56213a3c287e7a4dcd92dc7db5f473770f10e0524f9a48a5 [INFO] checking MutantBaby/Rust-By-Practice against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMutantBaby%2FRust-By-Practice" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MutantBaby/Rust-By-Practice 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/MutantBaby/Rust-By-Practice [INFO] finished tweaking git repo https://github.com/MutantBaby/Rust-By-Practice [INFO] tweaked toml for git repo https://github.com/MutantBaby/Rust-By-Practice written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/MutantBaby/Rust-By-Practice 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 69bd9b4c25fd8710804e617a6ffc999d1cf7e970eafce2e62c0f94ad1536d16f [INFO] running `Command { std: "docker" "start" "-a" "69bd9b4c25fd8710804e617a6ffc999d1cf7e970eafce2e62c0f94ad1536d16f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "69bd9b4c25fd8710804e617a6ffc999d1cf7e970eafce2e62c0f94ad1536d16f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69bd9b4c25fd8710804e617a6ffc999d1cf7e970eafce2e62c0f94ad1536d16f", kill_on_drop: false }` [INFO] [stdout] 69bd9b4c25fd8710804e617a6ffc999d1cf7e970eafce2e62c0f94ad1536d16f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4c011d8609aede774ab9ef1eb829304956dc534df447b961f4ea856948353a62 [INFO] running `Command { std: "docker" "start" "-a" "4c011d8609aede774ab9ef1eb829304956dc534df447b961f4ea856948353a62", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.151 [INFO] [stderr] Compiling proc-macro2 v1.0.71 [INFO] [stderr] Compiling serde v1.0.193 [INFO] [stderr] Compiling crossbeam-utils v0.8.18 [INFO] [stderr] Compiling thiserror v1.0.52 [INFO] [stderr] Compiling signal-hook v0.3.17 [INFO] [stderr] Compiling anyhow v1.0.77 [INFO] [stderr] Compiling serde_json v1.0.108 [INFO] [stderr] Checking bitflags v2.4.1 [INFO] [stderr] Checking exitcode v1.1.2 [INFO] [stderr] Checking utf8_slice v1.0.0 [INFO] [stderr] Checking crossbeam-channel v0.5.10 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.43 [INFO] [stderr] Checking dirs-sys v0.3.7 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking parking_lot_core v0.9.9 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking mio v0.8.9 [INFO] [stderr] Checking nix v0.27.1 [INFO] [stderr] Checking directories v4.0.1 [INFO] [stderr] Checking socket2 v0.5.5 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking ctrlc v3.4.2 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Compiling thiserror-impl v1.0.52 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Compiling serde_derive v1.0.193 [INFO] [stderr] Checking tokio v1.35.1 [INFO] [stderr] Checking confy v0.5.1 [INFO] [stderr] Checking rust-practice v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.98s [INFO] running `Command { std: "docker" "inspect" "4c011d8609aede774ab9ef1eb829304956dc534df447b961f4ea856948353a62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4c011d8609aede774ab9ef1eb829304956dc534df447b961f4ea856948353a62", kill_on_drop: false }` [INFO] [stdout] 4c011d8609aede774ab9ef1eb829304956dc534df447b961f4ea856948353a62