[INFO] cloning repository https://github.com/lklab/Rust-Study [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lklab/Rust-Study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flklab%2FRust-Study", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flklab%2FRust-Study'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b487281a504e706cec3ce4466a1767cf69a11e12 [INFO] checking lklab/Rust-Study against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flklab%2FRust-Study" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lklab/Rust-Study on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lklab/Rust-Study [INFO] finished tweaking git repo https://github.com/lklab/Rust-Study [INFO] tweaked toml for git repo https://github.com/lklab/Rust-Study written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/lklab/Rust-Study 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded getrandom v0.2.8 [INFO] [stderr] Downloaded libc v0.2.139 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 79d61055ae1d8f6bbdc38c5af1ac1961f60a2272c097a7abd1adaa4d7135b4eb [INFO] running `Command { std: "docker" "start" "-a" "79d61055ae1d8f6bbdc38c5af1ac1961f60a2272c097a7abd1adaa4d7135b4eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "79d61055ae1d8f6bbdc38c5af1ac1961f60a2272c097a7abd1adaa4d7135b4eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "79d61055ae1d8f6bbdc38c5af1ac1961f60a2272c097a7abd1adaa4d7135b4eb", kill_on_drop: false }` [INFO] [stdout] 79d61055ae1d8f6bbdc38c5af1ac1961f60a2272c097a7abd1adaa4d7135b4eb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 87e9784d830c9a84e3cd1100c200fed90066bc093de2992739fd7ce6d3aaac7a [INFO] running `Command { std: "docker" "start" "-a" "87e9784d830c9a84e3cd1100c200fed90066bc093de2992739fd7ce6d3aaac7a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Checking adder v0.1.0 (/opt/rustwide/workdir/adder) [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking ch13_iterators_and_closures v0.1.0 (/opt/rustwide/workdir/ch13_iterators_and_closures) [INFO] [stderr] Checking ch15_smart_pointers v0.1.0 (/opt/rustwide/workdir/ch15_smart_pointers) [INFO] [stderr] Checking ch04_ownership v0.1.0 (/opt/rustwide/workdir/ch04_ownership) [INFO] [stderr] Checking study v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> ch13_iterators_and_closures/src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Rectangle { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 5 | width: u32, [INFO] [stdout] 6 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking ch16_concurrency v0.1.0 (/opt/rustwide/workdir/ch16_concurrency) [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> ch13_iterators_and_closures/src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Rectangle { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 5 | width: u32, [INFO] [stdout] 6 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] 4 | Cons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:115:12 [INFO] [stdout] | [INFO] [stdout] 115 | ConsRc(i32, Rc), [INFO] [stdout] | ------ ^^^ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [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] 115 | ConsRc((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:183:17 [INFO] [stdout] | [INFO] [stdout] 183 | ConsRefCell(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] 183 | ConsRefCell((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:216:15 [INFO] [stdout] | [INFO] [stdout] 216 | ConsCycle(i32, RefCell>), [INFO] [stdout] | --------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ListCycle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] 216 | ConsCycle((), RefCell>), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] 4 | Cons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:115:12 [INFO] [stdout] | [INFO] [stdout] 115 | ConsRc(i32, Rc), [INFO] [stdout] | ------ ^^^ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [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] 115 | ConsRc((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:183:17 [INFO] [stdout] | [INFO] [stdout] 183 | ConsRefCell(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] 183 | ConsRefCell((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> ch15_smart_pointers/src/main.rs:216:15 [INFO] [stdout] | [INFO] [stdout] 216 | ConsCycle(i32, RefCell>), [INFO] [stdout] | --------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ListCycle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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] 216 | ConsCycle((), RefCell>), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking ch02_guessing_game v0.1.0 (/opt/rustwide/workdir/ch02_guessing_game) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.17s [INFO] running `Command { std: "docker" "inspect" "87e9784d830c9a84e3cd1100c200fed90066bc093de2992739fd7ce6d3aaac7a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "87e9784d830c9a84e3cd1100c200fed90066bc093de2992739fd7ce6d3aaac7a", kill_on_drop: false }` [INFO] [stdout] 87e9784d830c9a84e3cd1100c200fed90066bc093de2992739fd7ce6d3aaac7a