[INFO] cloning repository https://github.com/jsdw/seating-arrangement
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fseating-arrangement'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6692e7ba424e7160b8c37c2471de225ac79bef5
[INFO] testing jsdw/seating-arrangement against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fseating-arrangement" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsdw/seating-arrangement on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-38/source/Cargo.toml
[INFO] crate git repo https://github.com/jsdw/seating-arrangement already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.40
[INFO] [stderr]   Downloaded bstr v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 442cb0e98f59750ffde0b73d3f25335ffe086dd398f2f087d2112ed0271171d3
[INFO] running `Command { std: "docker" "start" "-a" "442cb0e98f59750ffde0b73d3f25335ffe086dd398f2f087d2112ed0271171d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "442cb0e98f59750ffde0b73d3f25335ffe086dd398f2f087d2112ed0271171d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "442cb0e98f59750ffde0b73d3f25335ffe086dd398f2f087d2112ed0271171d3", kill_on_drop: false }`
[INFO] [stdout] 442cb0e98f59750ffde0b73d3f25335ffe086dd398f2f087d2112ed0271171d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 351a490896db30441eefdcd928d254e863ec2ad36bd228c9ca4ba1701ccc3409
[INFO] running `Command { std: "docker" "start" "-a" "351a490896db30441eefdcd928d254e863ec2ad36bd228c9ca4ba1701ccc3409", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[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 getrandom v0.1.11
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling bstr v0.2.7
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling ctrlc v3.1.3
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling seating-arrangement v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `individual_cost`
[INFO] [stdout]   --> src/cost.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn individual_cost(&self, seats: &Seats<'_,T>, index: usize) -> isize {
[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: `cost_of_move`
[INFO] [stdout]    --> src/search.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.36s
[INFO] running `Command { std: "docker" "inspect" "351a490896db30441eefdcd928d254e863ec2ad36bd228c9ca4ba1701ccc3409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351a490896db30441eefdcd928d254e863ec2ad36bd228c9ca4ba1701ccc3409", kill_on_drop: false }`
[INFO] [stdout] 351a490896db30441eefdcd928d254e863ec2ad36bd228c9ca4ba1701ccc3409
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8d451a73bf8b0e33735a024c0db4e4f9a35fd616ce0577b12dd673bab155db4
[INFO] running `Command { std: "docker" "start" "-a" "b8d451a73bf8b0e33735a024c0db4e4f9a35fd616ce0577b12dd673bab155db4", kill_on_drop: false }`
[INFO] [stderr]    Compiling seating-arrangement v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `individual_cost`
[INFO] [stdout]   --> src/cost.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn individual_cost(&self, seats: &Seats<'_,T>, index: usize) -> isize {
[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: `cost_of_move`
[INFO] [stdout]    --> src/search.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 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] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "b8d451a73bf8b0e33735a024c0db4e4f9a35fd616ce0577b12dd673bab155db4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8d451a73bf8b0e33735a024c0db4e4f9a35fd616ce0577b12dd673bab155db4", kill_on_drop: false }`
[INFO] [stdout] b8d451a73bf8b0e33735a024c0db4e4f9a35fd616ce0577b12dd673bab155db4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a91300f74d3215f3b3b80fe5f6424af069255134e0fa63c4e60344b0f5d7e7e6
[INFO] running `Command { std: "docker" "start" "-a" "a91300f74d3215f3b3b80fe5f6424af069255134e0fa63c4e60344b0f5d7e7e6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `individual_cost`
[INFO] [stderr]   --> src/cost.rs:35:12
[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: associated function is never used: `cost_of_move`
[INFO] [stderr]    --> src/search.rs:113:12
[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: `seating-arrangement` (bin "seating-arrangement" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/seating_arrangement-f8cb3d358d7b745d)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a91300f74d3215f3b3b80fe5f6424af069255134e0fa63c4e60344b0f5d7e7e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a91300f74d3215f3b3b80fe5f6424af069255134e0fa63c4e60344b0f5d7e7e6", kill_on_drop: false }`
[INFO] [stdout] a91300f74d3215f3b3b80fe5f6424af069255134e0fa63c4e60344b0f5d7e7e6