[INFO] cloning repository https://github.com/andristarr/garbage_collector [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andristarr/garbage_collector" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandristarr%2Fgarbage_collector", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandristarr%2Fgarbage_collector'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9657c1e004bc86514284388654e9fd917c50ce51 [INFO] checking andristarr/garbage_collector against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandristarr%2Fgarbage_collector" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/andristarr/garbage_collector [INFO] finished tweaking git repo https://github.com/andristarr/garbage_collector [INFO] tweaked toml for git repo https://github.com/andristarr/garbage_collector written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/andristarr/garbage_collector on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/andristarr/garbage_collector 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 84a5dbca202291ddaaa3ed7784b83bd2dd9b7d747b5a19d3ce6c7ff944ff7714 [INFO] running `Command { std: "docker" "start" "-a" "84a5dbca202291ddaaa3ed7784b83bd2dd9b7d747b5a19d3ce6c7ff944ff7714", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "84a5dbca202291ddaaa3ed7784b83bd2dd9b7d747b5a19d3ce6c7ff944ff7714", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "84a5dbca202291ddaaa3ed7784b83bd2dd9b7d747b5a19d3ce6c7ff944ff7714", kill_on_drop: false }` [INFO] [stdout] 84a5dbca202291ddaaa3ed7784b83bd2dd9b7d747b5a19d3ce6c7ff944ff7714 [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bc456ef8ca36baee2928f97fadc7cf12359030a4b578dc99a4565b367af38eb6 [INFO] running `Command { std: "docker" "start" "-a" "bc456ef8ca36baee2928f97fadc7cf12359030a4b578dc99a4565b367af38eb6", kill_on_drop: false }` [INFO] [stderr] Checking garbage_collector v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: enum `ObjectType` is never used [INFO] [stdout] --> src/main.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | enum ObjectType { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/main.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Object` is never constructed [INFO] [stdout] --> src/main.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | struct Object { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `VM` is never constructed [INFO] [stdout] --> src/main.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | struct VM { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/main.rs:28:12 [INFO] [stdout] | [INFO] [stdout] 27 | impl VM { [INFO] [stdout] | ------- associated items in this implementation [INFO] [stdout] 28 | pub fn new(max_size: usize) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 38 | pub fn set_pair_tail(obj: Rc>, new_tail: Rc>) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | pub fn push_int(&mut self, value: usize) -> Rc> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 51 | pub fn push_pair(&mut self) -> Rc> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 57 | pub fn gc(&mut self) { [INFO] [stdout] | ^^ [INFO] [stdout] ... [INFO] [stdout] 72 | fn mark(obj: Rc>) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 88 | fn push(&mut self, obj: Rc>) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 95 | fn pop(&mut self) -> Rc> { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 103 | fn new_object(&mut self, obj_type: ObjectType) -> Rc> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 120 | fn mark_all(&mut self) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 126 | fn sweep(&mut self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/main.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | Int(usize), [INFO] [stdout] | --- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 4 - Int(usize), [INFO] [stdout] 4 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s [INFO] running `Command { std: "docker" "inspect" "bc456ef8ca36baee2928f97fadc7cf12359030a4b578dc99a4565b367af38eb6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc456ef8ca36baee2928f97fadc7cf12359030a4b578dc99a4565b367af38eb6", kill_on_drop: false }` [INFO] [stdout] bc456ef8ca36baee2928f97fadc7cf12359030a4b578dc99a4565b367af38eb6