[INFO] cloning repository https://github.com/mariogeiger/millsrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mariogeiger/millsrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmariogeiger%2Fmillsrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmariogeiger%2Fmillsrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ee5660f4deea1f18d6a8f643f0b34d8eb51fc3a
[INFO] testing mariogeiger/millsrs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmariogeiger%2Fmillsrs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mariogeiger/millsrs on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mariogeiger/millsrs
[INFO] finished tweaking git repo https://github.com/mariogeiger/millsrs
[INFO] tweaked toml for git repo https://github.com/mariogeiger/millsrs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/mariogeiger/millsrs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 gag v0.1.10
[INFO] [stderr]   Downloaded rustty v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e792679e67d270d1dca53dbf0d38071d3b0600d1d6bdbcc5c808645559044e40
[INFO] running `Command { std: "docker" "start" "-a" "e792679e67d270d1dca53dbf0d38071d3b0600d1d6bdbcc5c808645559044e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e792679e67d270d1dca53dbf0d38071d3b0600d1d6bdbcc5c808645559044e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e792679e67d270d1dca53dbf0d38071d3b0600d1d6bdbcc5c808645559044e40", kill_on_drop: false }`
[INFO] [stdout] e792679e67d270d1dca53dbf0d38071d3b0600d1d6bdbcc5c808645559044e40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85be268aee2d4627d6fb5a2db38e715b978087cc9034612689a2bca00f642793
[INFO] running `Command { std: "docker" "start" "-a" "85be268aee2d4627d6fb5a2db38e715b978087cc9034612689a2bca00f642793", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling negamax v0.1.0 (https://github.com/mariogeiger/negamax#cd225818)
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling tempfile v3.0.4
[INFO] [stderr]    Compiling gag v0.1.10
[INFO] [stderr]    Compiling rustty v0.1.12
[INFO] [stderr]    Compiling millsrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:271:17
[INFO] [stdout]     |
[INFO] [stdout] 271 |             let mut cell = canvas.get_mut(x, y).unwrap();
[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/main.rs:291:17
[INFO] [stdout]     |
[INFO] [stdout] 291 |             let mut cell = canvas.get_mut(x as usize, y as usize).unwrap();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.60s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "85be268aee2d4627d6fb5a2db38e715b978087cc9034612689a2bca00f642793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85be268aee2d4627d6fb5a2db38e715b978087cc9034612689a2bca00f642793", kill_on_drop: false }`
[INFO] [stdout] 85be268aee2d4627d6fb5a2db38e715b978087cc9034612689a2bca00f642793
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44449cbc16d731f219615b02364b2df9641cdc65b2852656a8ac9763de06a129
[INFO] running `Command { std: "docker" "start" "-a" "44449cbc16d731f219615b02364b2df9641cdc65b2852656a8ac9763de06a129", kill_on_drop: false }`
[INFO] [stderr]    Compiling millsrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:271:17
[INFO] [stdout]     |
[INFO] [stdout] 271 |             let mut cell = canvas.get_mut(x, y).unwrap();
[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/main.rs:291:17
[INFO] [stdout]     |
[INFO] [stdout] 291 |             let mut cell = canvas.get_mut(x as usize, y as usize).unwrap();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "44449cbc16d731f219615b02364b2df9641cdc65b2852656a8ac9763de06a129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44449cbc16d731f219615b02364b2df9641cdc65b2852656a8ac9763de06a129", kill_on_drop: false }`
[INFO] [stdout] 44449cbc16d731f219615b02364b2df9641cdc65b2852656a8ac9763de06a129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fe7d73221ea88ec69eaf9e5437af3eedaffa57d885a07d53fbc2e9fe68afbc5f
[INFO] running `Command { std: "docker" "start" "-a" "fe7d73221ea88ec69eaf9e5437af3eedaffa57d885a07d53fbc2e9fe68afbc5f", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:271:17
[INFO] [stderr]     |
[INFO] [stderr] 271 |             let mut cell = canvas.get_mut(x, y).unwrap();
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:291:17
[INFO] [stderr]     |
[INFO] [stderr] 291 |             let mut cell = canvas.get_mut(x as usize, y as usize).unwrap();
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `millsrs` (bin "millsrs" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/millsrs-7e94cd78412049c6)
[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" "fe7d73221ea88ec69eaf9e5437af3eedaffa57d885a07d53fbc2e9fe68afbc5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7d73221ea88ec69eaf9e5437af3eedaffa57d885a07d53fbc2e9fe68afbc5f", kill_on_drop: false }`
[INFO] [stdout] fe7d73221ea88ec69eaf9e5437af3eedaffa57d885a07d53fbc2e9fe68afbc5f