[INFO] cloning repository https://github.com/spocot/MalachiteLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spocot/MalachiteLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspocot%2FMalachiteLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspocot%2FMalachiteLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b843d1919c78433fd52457deb3f9ea971da5c547
[INFO] checking spocot/MalachiteLang against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspocot%2FMalachiteLang" "/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/spocot/MalachiteLang on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/spocot/MalachiteLang
[INFO] finished tweaking git repo https://github.com/spocot/MalachiteLang
[INFO] tweaked toml for git repo https://github.com/spocot/MalachiteLang written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/spocot/MalachiteLang 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cf2cd22959e7bbc67e2934a727bab1ca5453b61327b6000d076fc672ee79099
[INFO] running `Command { std: "docker" "start" "-a" "0cf2cd22959e7bbc67e2934a727bab1ca5453b61327b6000d076fc672ee79099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cf2cd22959e7bbc67e2934a727bab1ca5453b61327b6000d076fc672ee79099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cf2cd22959e7bbc67e2934a727bab1ca5453b61327b6000d076fc672ee79099", kill_on_drop: false }`
[INFO] [stdout] 0cf2cd22959e7bbc67e2934a727bab1ca5453b61327b6000d076fc672ee79099
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 345fb1c06ed264bc45f0c0a09d877cbd21ca825d366b62e353752ce794f3331d
[INFO] running `Command { std: "docker" "start" "-a" "345fb1c06ed264bc45f0c0a09d877cbd21ca825d366b62e353752ce794f3331d", kill_on_drop: false }`
[INFO] [stderr]     Checking malachite v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]   --> src/lexer/tokentypes.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 30 |     node: T,
[INFO] [stdout] 31 |     parent: Option<Weak<RefCell<Node<T>>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ntype` and `nval` are never read
[INFO] [stdout]   --> src/lexer/tokentypes.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub struct TypeNode<T> {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 82 |     ntype: Type,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 83 |     nval: Rc<RefCell<Node<T>>>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TypeNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]   --> src/lexer/tokentypes.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 30 |     node: T,
[INFO] [stdout] 31 |     parent: Option<Weak<RefCell<Node<T>>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ntype` and `nval` are never read
[INFO] [stdout]   --> src/lexer/tokentypes.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub struct TypeNode<T> {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 82 |     ntype: Type,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 83 |     nval: Rc<RefCell<Node<T>>>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TypeNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "345fb1c06ed264bc45f0c0a09d877cbd21ca825d366b62e353752ce794f3331d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "345fb1c06ed264bc45f0c0a09d877cbd21ca825d366b62e353752ce794f3331d", kill_on_drop: false }`
[INFO] [stdout] 345fb1c06ed264bc45f0c0a09d877cbd21ca825d366b62e353752ce794f3331d