[INFO] fetching crate coding_pk 0.13.0... [INFO] checking coding_pk-0.13.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] extracting crate coding_pk 0.13.0 into /workspace/builds/worker-3-tc1/source [INFO] started tweaking crates.io crate coding_pk 0.13.0 [INFO] finished tweaking crates.io crate coding_pk 0.13.0 [INFO] tweaked toml for crates.io crate coding_pk 0.13.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate coding_pk 0.13.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate coding_pk 0.13.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] acbc1ba2d8afad74eabe99bda7a7b42226a50c98ab43a2ee9b682a16726f0526 [INFO] running `Command { std: "docker" "start" "-a" "acbc1ba2d8afad74eabe99bda7a7b42226a50c98ab43a2ee9b682a16726f0526", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "acbc1ba2d8afad74eabe99bda7a7b42226a50c98ab43a2ee9b682a16726f0526", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "acbc1ba2d8afad74eabe99bda7a7b42226a50c98ab43a2ee9b682a16726f0526", kill_on_drop: false }` [INFO] [stdout] acbc1ba2d8afad74eabe99bda7a7b42226a50c98ab43a2ee9b682a16726f0526 [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c832bbebdbdd2e1265f92c5e83708835bf8211bc8a525e37f1a4fe799b61d6b4 [INFO] running `Command { std: "docker" "start" "-a" "c832bbebdbdd2e1265f92c5e83708835bf8211bc8a525e37f1a4fe799b61d6b4", kill_on_drop: false }` [INFO] [stderr] Checking coding_pk v0.13.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `head` [INFO] [stdout] --> src/linked_list/leetcode19.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn remove_nth_from_end(head: Option>, n: i32) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_head` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/linked_list/leetcode19.rs:3:57 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn remove_nth_from_end(head: Option>, n: i32) -> Option> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `head` [INFO] [stdout] --> src/linked_list/leetcode19.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn remove_nth_from_end(head: Option>, n: i32) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_head` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/linked_list/leetcode19.rs:3:57 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn remove_nth_from_end(head: Option>, n: i32) -> Option> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s [INFO] running `Command { std: "docker" "inspect" "c832bbebdbdd2e1265f92c5e83708835bf8211bc8a525e37f1a4fe799b61d6b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c832bbebdbdd2e1265f92c5e83708835bf8211bc8a525e37f1a4fe799b61d6b4", kill_on_drop: false }` [INFO] [stdout] c832bbebdbdd2e1265f92c5e83708835bf8211bc8a525e37f1a4fe799b61d6b4