[INFO] fetching crate stormcell 0.1.0...
[INFO] testing stormcell-0.1.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate stormcell 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate stormcell 0.1.0
[INFO] finished tweaking crates.io crate stormcell 0.1.0
[INFO] tweaked toml for crates.io crate stormcell 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stormcell 0.1.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stormcell 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cfda3fca72c76b069e0058f9a0576ee3651747f35011d9e57665ce6d7a017e6
[INFO] running `Command { std: "docker" "start" "-a" "3cfda3fca72c76b069e0058f9a0576ee3651747f35011d9e57665ce6d7a017e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cfda3fca72c76b069e0058f9a0576ee3651747f35011d9e57665ce6d7a017e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cfda3fca72c76b069e0058f9a0576ee3651747f35011d9e57665ce6d7a017e6", kill_on_drop: false }`
[INFO] [stdout] 3cfda3fca72c76b069e0058f9a0576ee3651747f35011d9e57665ce6d7a017e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3041bf8610a799875fdfacb7a5a419030b4ab9f234e6887b6341e7729ccf76be
[INFO] running `Command { std: "docker" "start" "-a" "3041bf8610a799875fdfacb7a5a419030b4ab9f234e6887b6341e7729ccf76be", kill_on_drop: false }`
[INFO] [stderr]    Compiling stormcell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:56:83
[INFO] [stdout]    |
[INFO] [stdout] 56 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 56 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:83:83
[INFO] [stdout]    |
[INFO] [stdout] 83 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 83 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 83 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:91:83
[INFO] [stdout]    |
[INFO] [stdout] 91 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 91 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 91 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/grid.rs:84:20
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn sampler(&self) -> GridSampler<T> {
[INFO] [stdout]    |                    ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn sampler(&self) -> GridSampler<'_, T> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/grid.rs:368:19
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<T>> {
[INFO] [stdout]     |                   ^^^^^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<'_, T>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "3041bf8610a799875fdfacb7a5a419030b4ab9f234e6887b6341e7729ccf76be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3041bf8610a799875fdfacb7a5a419030b4ab9f234e6887b6341e7729ccf76be", kill_on_drop: false }`
[INFO] [stdout] 3041bf8610a799875fdfacb7a5a419030b4ab9f234e6887b6341e7729ccf76be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c87d5071d635f4c3e6647755debad7637f54b0925106b58434f757a08f081185
[INFO] running `Command { std: "docker" "start" "-a" "c87d5071d635f4c3e6647755debad7637f54b0925106b58434f757a08f081185", kill_on_drop: false }`
[INFO] [stderr]    Compiling stormcell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:56:83
[INFO] [stdout]    |
[INFO] [stdout] 56 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 56 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:83:83
[INFO] [stdout]    |
[INFO] [stdout] 83 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 83 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 83 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:91:83
[INFO] [stdout]    |
[INFO] [stdout] 91 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 91 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 91 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/grid.rs:84:20
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn sampler(&self) -> GridSampler<T> {
[INFO] [stdout]    |                    ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn sampler(&self) -> GridSampler<'_, T> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/grid.rs:368:19
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<T>> {
[INFO] [stdout]     |                   ^^^^^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<'_, T>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:56:83
[INFO] [stdout]    |
[INFO] [stdout] 56 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 56 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:83:83
[INFO] [stdout]    |
[INFO] [stdout] 83 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 83 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 83 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/changes.rs:91:83
[INFO] [stdout]    |
[INFO] [stdout] 91 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout]    |                                                                                   ^         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 91 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] 91 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/grid.rs:84:20
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn sampler(&self) -> GridSampler<T> {
[INFO] [stdout]    |                    ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn sampler(&self) -> GridSampler<'_, T> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/grid.rs:368:19
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<T>> {
[INFO] [stdout]     |                   ^^^^^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<'_, T>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "c87d5071d635f4c3e6647755debad7637f54b0925106b58434f757a08f081185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c87d5071d635f4c3e6647755debad7637f54b0925106b58434f757a08f081185", kill_on_drop: false }`
[INFO] [stdout] c87d5071d635f4c3e6647755debad7637f54b0925106b58434f757a08f081185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ad52cc14f81084b4e7d1865eb2d81f8d9beb0c787f8fc71dc8313e2055a659e8
[INFO] running `Command { std: "docker" "start" "-a" "ad52cc14f81084b4e7d1865eb2d81f8d9beb0c787f8fc71dc8313e2055a659e8", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stdout] 
[INFO] [stderr]   --> src/changes.rs:56:83
[INFO] [stdout] running 6 tests
[INFO] [stderr]    |
[INFO] [stdout] test changes::tests::test_changes ... ok
[INFO] [stderr] 56 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stdout] test allocator::tests::test_cell_allocator ... ok
[INFO] [stderr]    |                                                                                   ^         ^
[INFO] [stdout] test grid::tests::test_grid ... ok
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 56 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr] 56 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/changes.rs:83:83
[INFO] [stderr]    |
[INFO] [stderr] 83 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr]    |                                                                                   ^         ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 83 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr] 83 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/changes.rs:91:83
[INFO] [stderr]    |
[INFO] [stderr] 91 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr]    |                                                                                   ^         ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 91 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr] 91 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/grid.rs:84:20
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn sampler(&self) -> GridSampler<T> {
[INFO] [stderr]    |                    ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn sampler(&self) -> GridSampler<'_, T> {
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/grid.rs:368:19
[INFO] [stderr]     |
[INFO] [stderr] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<T>> {
[INFO] [stderr]     |                   ^^^^^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 368 |     pub fn sample(&mut self, coords: [usize; 3]) -> Option<GridSample<'_, T>> {
[INFO] [stderr]     |                                                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: `stormcell` (lib) generated 5 warnings (run `cargo fix --lib -p stormcell` to apply 5 suggestions)
[INFO] [stderr] warning: `stormcell` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stormcell-aab78049e07c54dc)
[INFO] [stdout] test quantizer::tests::test_quantizer ... ok
[INFO] [stdout] test quantizer::neighbors::tests::test_neighbors_quantizer ... ok
[INFO] [stderr]    Doc-tests stormcell
[INFO] [stdout] test quantizer::kernel::tests::test_kernel_quantizer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/changes.rs:56:83
[INFO] [stderr]    |
[INFO] [stderr] 56 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr]    |                                                                                   ^         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 56 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr] 56 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/changes.rs:83:83
[INFO] [stderr]    |
[INFO] [stderr] 83 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr]    |                                                                                   ^         ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 83 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr] 83 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/changes.rs:91:83
[INFO] [stderr]    |
[INFO] [stderr] 91 |             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr]    |                                                                                   ^         ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 91 -             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| ([x, y, z])))
[INFO] [stderr] 91 +             .flat_map(move |[x, y]| (region.start[2]..region.end[2]).map(move |z| [x, y, z] ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[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" "ad52cc14f81084b4e7d1865eb2d81f8d9beb0c787f8fc71dc8313e2055a659e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad52cc14f81084b4e7d1865eb2d81f8d9beb0c787f8fc71dc8313e2055a659e8", kill_on_drop: false }`
[INFO] [stdout] ad52cc14f81084b4e7d1865eb2d81f8d9beb0c787f8fc71dc8313e2055a659e8
