[INFO] cloning repository https://github.com/saulshanabrook/graph-computation-play
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/saulshanabrook/graph-computation-play" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaulshanabrook%2Fgraph-computation-play", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaulshanabrook%2Fgraph-computation-play'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6a782a5be49bfaa372b226ceb59a68e26b6ea61
[INFO] testing saulshanabrook/graph-computation-play 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%2Fsaulshanabrook%2Fgraph-computation-play" "/workspace/builds/worker-91/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-91/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/saulshanabrook/graph-computation-play 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/saulshanabrook/graph-computation-play
[INFO] finished tweaking git repo https://github.com/saulshanabrook/graph-computation-play
[INFO] tweaked toml for git repo https://github.com/saulshanabrook/graph-computation-play written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] crate git repo https://github.com/saulshanabrook/graph-computation-play 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] 2a35d230c2eadbd0c396caf92e159aa7f5d163f160ee6490e4e96e5f132874d0
[INFO] running `Command { std: "docker" "start" "-a" "2a35d230c2eadbd0c396caf92e159aa7f5d163f160ee6490e4e96e5f132874d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a35d230c2eadbd0c396caf92e159aa7f5d163f160ee6490e4e96e5f132874d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a35d230c2eadbd0c396caf92e159aa7f5d163f160ee6490e4e96e5f132874d0", kill_on_drop: false }`
[INFO] [stdout] 2a35d230c2eadbd0c396caf92e159aa7f5d163f160ee6490e4e96e5f132874d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] 930c545b364d82bdb2e44427ebee2c91dee9c04a1fc0bef590d343cea7abdb48
[INFO] running `Command { std: "docker" "start" "-a" "930c545b364d82bdb2e44427ebee2c91dee9c04a1fc0bef590d343cea7abdb48", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]    Compiling graph-computation-play v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `POP_SIZE`
[INFO] [stdout]   --> main.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | const POP_SIZE: usize = 100;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Genomes`
[INFO] [stdout]   --> main.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | type Genomes = [Genome; POP_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Errors`
[INFO] [stdout]   --> main.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | type Errors = [Error; POP_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `errors_from_genomes`
[INFO] [stdout]   --> main.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn errors_from_genomes(genomes: Genomes) -> Errors {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Population`
[INFO] [stdout]   --> main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Population {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `population_from_genomes`
[INFO] [stdout]   --> main.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn population_from_genomes(genomes: Genomes) -> Population {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `initial_population`
[INFO] [stdout]   --> main.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.81s
[INFO] running `Command { std: "docker" "inspect" "930c545b364d82bdb2e44427ebee2c91dee9c04a1fc0bef590d343cea7abdb48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930c545b364d82bdb2e44427ebee2c91dee9c04a1fc0bef590d343cea7abdb48", kill_on_drop: false }`
[INFO] [stdout] 930c545b364d82bdb2e44427ebee2c91dee9c04a1fc0bef590d343cea7abdb48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] 9b7cfd4466d498ee17c5dd403e71262f5e6b5f6ec0cf965b3a8bec54d7a5c9da
[INFO] running `Command { std: "docker" "start" "-a" "9b7cfd4466d498ee17c5dd403e71262f5e6b5f6ec0cf965b3a8bec54d7a5c9da", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling graph-computation-play v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `POP_SIZE`
[INFO] [stdout]   --> main.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | const POP_SIZE: usize = 100;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Genomes`
[INFO] [stdout]   --> main.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | type Genomes = [Genome; POP_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Errors`
[INFO] [stdout]   --> main.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | type Errors = [Error; POP_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `errors_from_genomes`
[INFO] [stdout]   --> main.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn errors_from_genomes(genomes: Genomes) -> Errors {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Population`
[INFO] [stdout]   --> main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Population {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `population_from_genomes`
[INFO] [stdout]   --> main.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn population_from_genomes(genomes: Genomes) -> Population {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `initial_population`
[INFO] [stdout]   --> main.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "9b7cfd4466d498ee17c5dd403e71262f5e6b5f6ec0cf965b3a8bec54d7a5c9da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b7cfd4466d498ee17c5dd403e71262f5e6b5f6ec0cf965b3a8bec54d7a5c9da", kill_on_drop: false }`
[INFO] [stdout] 9b7cfd4466d498ee17c5dd403e71262f5e6b5f6ec0cf965b3a8bec54d7a5c9da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] 7ce4ada76614d9536806a02fb9d5f1dc3d3ce8693d9a65bb9a3b412192dcf77f
[INFO] running `Command { std: "docker" "start" "-a" "7ce4ada76614d9536806a02fb9d5f1dc3d3ce8693d9a65bb9a3b412192dcf77f", kill_on_drop: false }`
[INFO] [stderr] warning: constant is never used: `POP_SIZE`
[INFO] [stderr]   --> main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | const POP_SIZE: usize = 100;
[INFO] [stdout] 
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: type alias is never used: `Genomes`
[INFO] [stderr]   --> main.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | type Genomes = [Genome; POP_SIZE];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Errors`
[INFO] [stderr]   --> main.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | type Errors = [Error; POP_SIZE];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `errors_from_genomes`
[INFO] [stderr]   --> main.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn errors_from_genomes(genomes: Genomes) -> Errors {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Population`
[INFO] [stderr]   --> main.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 | struct Population {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `population_from_genomes`
[INFO] [stderr]   --> main.rs:67:4
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn population_from_genomes(genomes: Genomes) -> Population {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `initial_population`
[INFO] [stderr]   --> main.rs:74:4
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn initial_population<R: Rng>(random_gene: &Range<Gene>, rng: &mut R) -> Population {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `graph-computation-play` (bin "graph-computation-play" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/graph_computation_play-76b9b98505bae886)
[INFO] running `Command { std: "docker" "inspect" "7ce4ada76614d9536806a02fb9d5f1dc3d3ce8693d9a65bb9a3b412192dcf77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ce4ada76614d9536806a02fb9d5f1dc3d3ce8693d9a65bb9a3b412192dcf77f", kill_on_drop: false }`
[INFO] [stdout] 7ce4ada76614d9536806a02fb9d5f1dc3d3ce8693d9a65bb9a3b412192dcf77f