[INFO] updating cached repository https://github.com/jsdw/seating-arrangement
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a6692e7ba424e7160b8c37c2471de225ac79bef5
[INFO] testing jsdw/seating-arrangement against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fseating-arrangement" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsdw/seating-arrangement on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "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-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1ec2c310c917945c700ad112efbc00c909bcf651be7dae65e4233f0165031d88
[INFO] running `"docker" "start" "-a" "1ec2c310c917945c700ad112efbc00c909bcf651be7dae65e4233f0165031d88"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling ctrlc v3.1.3
[INFO] [stderr]    Compiling bstr v0.2.7
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling 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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `"docker" "inspect" "1ec2c310c917945c700ad112efbc00c909bcf651be7dae65e4233f0165031d88"`
[INFO] running `"docker" "rm" "-f" "1ec2c310c917945c700ad112efbc00c909bcf651be7dae65e4233f0165031d88"`
[INFO] [stdout] 1ec2c310c917945c700ad112efbc00c909bcf651be7dae65e4233f0165031d88
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a617bbf030ca2257740212631e786e207445959fe19634cfe921d54d62de1d27
[INFO] running `"docker" "start" "-a" "a617bbf030ca2257740212631e786e207445959fe19634cfe921d54d62de1d27"`
[INFO] [stderr]    Compiling 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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "a617bbf030ca2257740212631e786e207445959fe19634cfe921d54d62de1d27"`
[INFO] running `"docker" "rm" "-f" "a617bbf030ca2257740212631e786e207445959fe19634cfe921d54d62de1d27"`
[INFO] [stdout] a617bbf030ca2257740212631e786e207445959fe19634cfe921d54d62de1d27
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3dfded51e8e2fdbdaa296f1dcc664cd1627eba4af1527459e5497ce5d2758fc7
[INFO] running `"docker" "start" "-a" "3dfded51e8e2fdbdaa296f1dcc664cd1627eba4af1527459e5497ce5d2758fc7"`
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/seating_arrangement-af65f59432a53337
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3dfded51e8e2fdbdaa296f1dcc664cd1627eba4af1527459e5497ce5d2758fc7"`
[INFO] running `"docker" "rm" "-f" "3dfded51e8e2fdbdaa296f1dcc664cd1627eba4af1527459e5497ce5d2758fc7"`
[INFO] [stdout] 3dfded51e8e2fdbdaa296f1dcc664cd1627eba4af1527459e5497ce5d2758fc7