[INFO] cloning repository https://github.com/illumination-k/ods-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illumination-k/ods-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillumination-k%2Fods-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillumination-k%2Fods-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d0010b58fd90df3d923fcf7082b9579a25cad2f
[INFO] checking illumination-k/ods-rust against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillumination-k%2Fods-rust" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/illumination-k/ods-rust on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/illumination-k/ods-rust
[INFO] finished tweaking git repo https://github.com/illumination-k/ods-rust
[INFO] tweaked toml for git repo https://github.com/illumination-k/ods-rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/illumination-k/ods-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6312ef21d38e9e02de174a00fea805f2d1e57fcc37f17519938cc327fa3cec8b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6312ef21d38e9e02de174a00fea805f2d1e57fcc37f17519938cc327fa3cec8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6312ef21d38e9e02de174a00fea805f2d1e57fcc37f17519938cc327fa3cec8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6312ef21d38e9e02de174a00fea805f2d1e57fcc37f17519938cc327fa3cec8b", kill_on_drop: false }`
[INFO] [stdout] 6312ef21d38e9e02de174a00fea805f2d1e57fcc37f17519938cc327fa3cec8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cec1c44c5091b562a83539e1180ee244f97bd76fb5163b1dcd619d2af65bab6e
[INFO] running `Command { std: "docker" "start" "-a" "cec1c44c5091b562a83539e1180ee244f97bd76fb5163b1dcd619d2af65bab6e", kill_on_drop: false }`
[INFO] [stderr]     Checking open-data-structure-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/list/selist/mod.rs:267:21
[INFO] [stdout]     |
[INFO] [stdout] 267 |             let mut u = cursor.current.clone();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/list/selist/mod.rs:267:21
[INFO] [stdout]     |
[INFO] [stdout] 267 |             let mut u = cursor.current.clone();
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/list/selist/mod.rs:267:17
[INFO] [stdout]     |
[INFO] [stdout] 267 |             let mut u = cursor.current.clone();
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/list/selist/mod.rs:267:17
[INFO] [stdout]     |
[INFO] [stdout] 267 |             let mut u = cursor.current.clone();
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `splice_node`
[INFO] [stdout]    --> src/list/selist/mod.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn splice_node(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `spread`
[INFO] [stdout]    --> src/list/selist/mod.rs:203:8
[INFO] [stdout]     |
[INFO] [stdout] 203 |     fn spread(&mut self, mut cur: Cursor<T>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `splice_node`
[INFO] [stdout]    --> src/list/selist/mod.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn splice_node(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `spread`
[INFO] [stdout]    --> src/list/selist/mod.rs:203:8
[INFO] [stdout]     |
[INFO] [stdout] 203 |     fn spread(&mut self, mut cur: Cursor<T>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "cec1c44c5091b562a83539e1180ee244f97bd76fb5163b1dcd619d2af65bab6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec1c44c5091b562a83539e1180ee244f97bd76fb5163b1dcd619d2af65bab6e", kill_on_drop: false }`
[INFO] [stdout] cec1c44c5091b562a83539e1180ee244f97bd76fb5163b1dcd619d2af65bab6e