[INFO] cloning repository https://github.com/jsdw/seating-arrangement
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsdw/seating-arrangement" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fseating-arrangement"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fseating-arrangement'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a6692e7ba424e7160b8c37c2471de225ac79bef5
[INFO] checking jsdw/seating-arrangement against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fseating-arrangement" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsdw/seating-arrangement on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jsdw/seating-arrangement
[INFO] finished tweaking git repo https://github.com/jsdw/seating-arrangement
[INFO] tweaked toml for git repo https://github.com/jsdw/seating-arrangement written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/jsdw/seating-arrangement already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 622f6e6ea7bf1c01cb6e78f12b897dc7a037a9ae408b929ad8c0d58145703ea3
[INFO] running `"docker" "start" "-a" "622f6e6ea7bf1c01cb6e78f12b897dc7a037a9ae408b929ad8c0d58145703ea3"`
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking getrandom v0.1.11
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking bstr v0.2.7
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking seating-arrangement v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `individual_cost`
[INFO] [stderr]   --> src/cost.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn individual_cost(&self, seats: &Seats<'_,T>, index: usize) -> isize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cost_of_move`
[INFO] [stderr]    --> src/search.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn cost_of_move<'t,F>(&self, seats: &mut Seats<'t,Id>, cost: &Cost<Id,F>) -> isize where F: Fn(&Id,&Id) -> Option<isize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `individual_cost`
[INFO] [stderr]   --> src/cost.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn individual_cost(&self, seats: &Seats<'_,T>, index: usize) -> isize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cost_of_move`
[INFO] [stderr]    --> src/search.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn cost_of_move<'t,F>(&self, seats: &mut Seats<'t,Id>, cost: &Cost<Id,F>) -> isize where F: Fn(&Id,&Id) -> Option<isize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.96s
[INFO] running `"docker" "inspect" "622f6e6ea7bf1c01cb6e78f12b897dc7a037a9ae408b929ad8c0d58145703ea3"`
[INFO] running `"docker" "rm" "-f" "622f6e6ea7bf1c01cb6e78f12b897dc7a037a9ae408b929ad8c0d58145703ea3"`
[INFO] [stdout] 622f6e6ea7bf1c01cb6e78f12b897dc7a037a9ae408b929ad8c0d58145703ea3