[INFO] cloning repository https://github.com/DadouBordeaux/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DadouBordeaux/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDadouBordeaux%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDadouBordeaux%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0680ba3060b9580869080d324dee3bf72d2e971f
[INFO] building DadouBordeaux/rust_playground against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDadouBordeaux%2Frust_playground" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DadouBordeaux/rust_playground on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DadouBordeaux/rust_playground
[INFO] finished tweaking git repo https://github.com/DadouBordeaux/rust_playground
[INFO] tweaked toml for git repo https://github.com/DadouBordeaux/rust_playground written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DadouBordeaux/rust_playground 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctor v0.1.21
[INFO] [stderr]   Downloaded pretty_assertions v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0e9149c6d4f24eaba787960703fa2ae94709d2f6880b0931e6e41c62567b7ee
[INFO] running `Command { std: "docker" "start" "-a" "d0e9149c6d4f24eaba787960703fa2ae94709d2f6880b0931e6e41c62567b7ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0e9149c6d4f24eaba787960703fa2ae94709d2f6880b0931e6e41c62567b7ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e9149c6d4f24eaba787960703fa2ae94709d2f6880b0931e6e41c62567b7ee", kill_on_drop: false }`
[INFO] [stdout] d0e9149c6d4f24eaba787960703fa2ae94709d2f6880b0931e6e41c62567b7ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba9769a240bdf356936a66a21699d6e6f0ed29722c096a632912f77f0844ef14
[INFO] running `Command { std: "docker" "start" "-a" "ba9769a240bdf356936a66a21699d6e6f0ed29722c096a632912f77f0844ef14", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/conway.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RangeInclusive`
[INFO] [stdout]  --> src/conway.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{RangeInclusive};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `NeighbourhoodOccupancy` is more private than the item `conway::Cell::would_be_alive`
[INFO] [stdout]    --> src/conway.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn would_be_alive(&self, neighbour_state: NeighbourhoodOccupancy) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `conway::Cell::would_be_alive` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `NeighbourhoodOccupancy` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/conway.rs:90:1
[INFO] [stdout]     |
[INFO] [stdout] 90  | enum NeighbourhoodOccupancy {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]   --> src/conway.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct ConwayGameOfLife {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     state: Vec<Vec<Cell>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_alive_cell`, `get_cell`, `next`, and `square` are never used
[INFO] [stdout]   --> src/conway.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl ConwayGameOfLife {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn with_alive_cell(mut self, position: (usize, usize)) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn get_cell(&self, x: usize, y: usize) -> &Cell {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn next(mut self) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn square(size: usize) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NeighbourhoodOccupancy` is never used
[INFO] [stdout]   --> src/conway.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 | enum NeighbourhoodOccupancy {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbour_position` is never used
[INFO] [stdout]   --> src/conway.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn neighbour_position(x: usize, y: usize) -> Vec<(usize, usize)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_neighbours` is never used
[INFO] [stdout]    --> src/conway.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn count_neighbours(game: &ConwayGameOfLife, x: usize, y: usize) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbourhood_occupancy` is never used
[INFO] [stdout]    --> src/conway.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn neighbourhood_occupancy(neighbours_number: u8) -> NeighbourhoodOccupancy {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alive` is never constructed
[INFO] [stdout]    --> src/conway.rs:142:5
[INFO] [stdout]     |
[INFO] [stdout] 141 | pub enum Cell {
[INFO] [stdout]     |          ---- variant in this enum
[INFO] [stdout] 142 |     Alive,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `would_be_alive` is never used
[INFO] [stdout]    --> src/conway.rs:147:12
[INFO] [stdout]     |
[INFO] [stdout] 146 | impl Cell {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] 147 |     pub fn would_be_alive(&self, neighbour_state: NeighbourhoodOccupancy) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "ba9769a240bdf356936a66a21699d6e6f0ed29722c096a632912f77f0844ef14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba9769a240bdf356936a66a21699d6e6f0ed29722c096a632912f77f0844ef14", kill_on_drop: false }`
[INFO] [stdout] ba9769a240bdf356936a66a21699d6e6f0ed29722c096a632912f77f0844ef14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75213f240397c4a71c3a6137e364f777a4433aa05987f313352865e766842a4c
[INFO] running `Command { std: "docker" "start" "-a" "75213f240397c4a71c3a6137e364f777a4433aa05987f313352865e766842a4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling pretty_assertions v1.1.0
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/conway.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RangeInclusive`
[INFO] [stdout]  --> src/conway.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{RangeInclusive};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `conway::NeighbourhoodOccupancy` is more private than the item `conway::Cell::would_be_alive`
[INFO] [stdout]    --> src/conway.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn would_be_alive(&self, neighbour_state: NeighbourhoodOccupancy) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `conway::Cell::would_be_alive` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `conway::NeighbourhoodOccupancy` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/conway.rs:90:1
[INFO] [stdout]     |
[INFO] [stdout] 90  | enum NeighbourhoodOccupancy {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `next` and `square` are never used
[INFO] [stdout]   --> src/conway.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl ConwayGameOfLife {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn next(mut self) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn square(size: usize) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "75213f240397c4a71c3a6137e364f777a4433aa05987f313352865e766842a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75213f240397c4a71c3a6137e364f777a4433aa05987f313352865e766842a4c", kill_on_drop: false }`
[INFO] [stdout] 75213f240397c4a71c3a6137e364f777a4433aa05987f313352865e766842a4c