[INFO] updating cached repository https://github.com/Nub/rust_of_life
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 585164527422f777f74c59c06d1056635779fa79
[INFO] testing Nub/rust_of_life against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FNub%2Frust_of_life" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nub/rust_of_life on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Nub/rust_of_life
[INFO] finished tweaking git repo https://github.com/Nub/rust_of_life
[INFO] tweaked toml for git repo https://github.com/Nub/rust_of_life written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Nub/rust_of_life already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 73a666016142ce2b16465da43d92a8aab1ea78665330b8f208e0004d8d86b632
[INFO] running `"docker" "start" "-a" "73a666016142ce2b16465da43d92a8aab1ea78665330b8f208e0004d8d86b632"`
[INFO] [stderr]    Compiling life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/main.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let count = if c.value { self.neighbors(c).len() } else { 0 };
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "73a666016142ce2b16465da43d92a8aab1ea78665330b8f208e0004d8d86b632"`
[INFO] running `"docker" "rm" "-f" "73a666016142ce2b16465da43d92a8aab1ea78665330b8f208e0004d8d86b632"`
[INFO] [stdout] 73a666016142ce2b16465da43d92a8aab1ea78665330b8f208e0004d8d86b632
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f879c6aadf3e7bd748878d6a536938f86a4dbd09ba63c9a53e0833cfa07e1a69
[INFO] running `"docker" "start" "-a" "f879c6aadf3e7bd748878d6a536938f86a4dbd09ba63c9a53e0833cfa07e1a69"`
[INFO] [stderr]    Compiling life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/main.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let count = if c.value { self.neighbors(c).len() } else { 0 };
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "f879c6aadf3e7bd748878d6a536938f86a4dbd09ba63c9a53e0833cfa07e1a69"`
[INFO] running `"docker" "rm" "-f" "f879c6aadf3e7bd748878d6a536938f86a4dbd09ba63c9a53e0833cfa07e1a69"`
[INFO] [stdout] f879c6aadf3e7bd748878d6a536938f86a4dbd09ba63c9a53e0833cfa07e1a69
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] d30c65562b639bc09f3df0512aaa611c65813e4a08673b04ef9379cca350e7ef
[INFO] running `"docker" "start" "-a" "d30c65562b639bc09f3df0512aaa611c65813e4a08673b04ef9379cca350e7ef"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/life-bfe59d4f23348e57
[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" "d30c65562b639bc09f3df0512aaa611c65813e4a08673b04ef9379cca350e7ef"`
[INFO] running `"docker" "rm" "-f" "d30c65562b639bc09f3df0512aaa611c65813e4a08673b04ef9379cca350e7ef"`
[INFO] [stdout] d30c65562b639bc09f3df0512aaa611c65813e4a08673b04ef9379cca350e7ef