[INFO] cloning repository https://github.com/wayneliu0512/rust-cheatsheet [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wayneliu0512/rust-cheatsheet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwayneliu0512%2Frust-cheatsheet", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwayneliu0512%2Frust-cheatsheet'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8e93670de00c119c633a00138a5fb827aa86df10 [INFO] checking wayneliu0512/rust-cheatsheet against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwayneliu0512%2Frust-cheatsheet" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/wayneliu0512/rust-cheatsheet [INFO] finished tweaking git repo https://github.com/wayneliu0512/rust-cheatsheet [INFO] tweaked toml for git repo https://github.com/wayneliu0512/rust-cheatsheet written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/wayneliu0512/rust-cheatsheet on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/wayneliu0512/rust-cheatsheet 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 31114fe60d98a342b266563b4e63112ab1cfa0eda89860283ee47dac5fd59361 [INFO] running `Command { std: "docker" "start" "-a" "31114fe60d98a342b266563b4e63112ab1cfa0eda89860283ee47dac5fd59361", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "31114fe60d98a342b266563b4e63112ab1cfa0eda89860283ee47dac5fd59361", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31114fe60d98a342b266563b4e63112ab1cfa0eda89860283ee47dac5fd59361", kill_on_drop: false }` [INFO] [stdout] 31114fe60d98a342b266563b4e63112ab1cfa0eda89860283ee47dac5fd59361 [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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a0db8110e97381d1dda49f34082a250f738d88270202223e7cb4fa69205b27e1 [INFO] running `Command { std: "docker" "start" "-a" "a0db8110e97381d1dda49f34082a250f738d88270202223e7cb4fa69205b27e1", kill_on_drop: false }` [INFO] [stderr] Checking unicode-segmentation v1.12.0 [INFO] [stderr] Checking try_ v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/smart_pointer.rs:98:10 [INFO] [stdout] | [INFO] [stdout] 98 | Cons(i32, Rc), [INFO] [stdout] | ---- ^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 98 - Cons(i32, Rc), [INFO] [stdout] 98 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/smart_pointer.rs:112:11 [INFO] [stdout] | [INFO] [stdout] 112 | ConsR(Rc>, Rc), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ListRefCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 112 - ConsR(Rc>, Rc), [INFO] [stdout] 112 + ConsR((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/smart_pointer.rs:98:10 [INFO] [stdout] | [INFO] [stdout] 98 | Cons(i32, Rc), [INFO] [stdout] | ---- ^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 98 - Cons(i32, Rc), [INFO] [stdout] 98 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/smart_pointer.rs:112:11 [INFO] [stdout] | [INFO] [stdout] 112 | ConsR(Rc>, Rc), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ListRefCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 112 - ConsR(Rc>, Rc), [INFO] [stdout] 112 + ConsR((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "a0db8110e97381d1dda49f34082a250f738d88270202223e7cb4fa69205b27e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a0db8110e97381d1dda49f34082a250f738d88270202223e7cb4fa69205b27e1", kill_on_drop: false }` [INFO] [stdout] a0db8110e97381d1dda49f34082a250f738d88270202223e7cb4fa69205b27e1