[INFO] cloning repository https://github.com/cfiet/rust-advent-of-code-2018 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cfiet/rust-advent-of-code-2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfiet%2Frust-advent-of-code-2018", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfiet%2Frust-advent-of-code-2018'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 395b460f2409c48cf7fd4cfc82d8568624da24e8 [INFO] checking cfiet/rust-advent-of-code-2018 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcfiet%2Frust-advent-of-code-2018" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cfiet/rust-advent-of-code-2018 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/cfiet/rust-advent-of-code-2018 [INFO] finished tweaking git repo https://github.com/cfiet/rust-advent-of-code-2018 [INFO] tweaked toml for git repo https://github.com/cfiet/rust-advent-of-code-2018 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/cfiet/rust-advent-of-code-2018 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b456c4077cb561b1e18d8e0a76056096b8c0a0eaa62f4175a1187314de05c0ab [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b456c4077cb561b1e18d8e0a76056096b8c0a0eaa62f4175a1187314de05c0ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b456c4077cb561b1e18d8e0a76056096b8c0a0eaa62f4175a1187314de05c0ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b456c4077cb561b1e18d8e0a76056096b8c0a0eaa62f4175a1187314de05c0ab", kill_on_drop: false }` [INFO] [stdout] b456c4077cb561b1e18d8e0a76056096b8c0a0eaa62f4175a1187314de05c0ab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] cb456d24b1dc702c2d4e0f47327b9c38de9cd077f20dee127ff197142b06030f [INFO] running `Command { std: "docker" "start" "-a" "cb456d24b1dc702c2d4e0f47327b9c38de9cd077f20dee127ff197142b06030f", kill_on_drop: false }` [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Compiling memchr v2.1.2 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking itertools v0.8.0 [INFO] [stderr] Checking regex-syntax v0.6.4 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking regex v1.1.0 [INFO] [stderr] Checking rust-advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the type `Rc>` does not permit zero-initialization [INFO] [stdout] --> src/day9.rs:59:22 [INFO] [stdout] | [INFO] [stdout] 59 | next: unsafe { std::mem::zeroed() }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] note: `std::ptr::NonNull>>` must be non-null (in this struct field) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `Rc>` does not permit zero-initialization [INFO] [stdout] --> src/day9.rs:60:22 [INFO] [stdout] | [INFO] [stdout] 60 | prev: unsafe { std::mem::zeroed() } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] note: `std::ptr::NonNull>>` must be non-null (in this struct field) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `Rc>` does not permit zero-initialization [INFO] [stdout] --> src/day9.rs:59:22 [INFO] [stdout] | [INFO] [stdout] 59 | next: unsafe { std::mem::zeroed() }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] note: `std::ptr::NonNull>>` must be non-null (in this struct field) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `Rc>` does not permit zero-initialization [INFO] [stdout] --> src/day9.rs:60:22 [INFO] [stdout] | [INFO] [stdout] 60 | prev: unsafe { std::mem::zeroed() } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] note: `std::ptr::NonNull>>` must be non-null (in this struct field) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.24s [INFO] running `Command { std: "docker" "inspect" "cb456d24b1dc702c2d4e0f47327b9c38de9cd077f20dee127ff197142b06030f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb456d24b1dc702c2d4e0f47327b9c38de9cd077f20dee127ff197142b06030f", kill_on_drop: false }` [INFO] [stdout] cb456d24b1dc702c2d4e0f47327b9c38de9cd077f20dee127ff197142b06030f