[INFO] cloning repository https://github.com/pepone42/HexGemRust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pepone42/HexGemRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpepone42%2FHexGemRust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpepone42%2FHexGemRust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 109b9d82088fd5370618485fc0d83e387929906b
[INFO] checking pepone42/HexGemRust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpepone42%2FHexGemRust" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pepone42/HexGemRust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pepone42/HexGemRust
[INFO] finished tweaking git repo https://github.com/pepone42/HexGemRust
[INFO] tweaked toml for git repo https://github.com/pepone42/HexGemRust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/pepone42/HexGemRust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] db1b3d738c7088299dafb644e019db4b7c992d658704a99cce4b1d0c5ec427ea
[INFO] running `"docker" "start" "-a" "db1b3d738c7088299dafb644e019db4b7c992d658704a99cce4b1d0c5ec427ea"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling sdl2-sys v0.8.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.17.0
[INFO] [stderr]     Checking hexgemrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/hexagrid.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice`
[INFO] [stderr]  --> src/hexagrid.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::slice;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let mut sys =&mut System::new("Hexgem",400,240);
[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: struct is never constructed: `HexaGridRingInter`
[INFO] [stderr]   --> src/hexagrid.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub struct HexaGridRingInter<'a, T: 'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/hexagrid.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn get_mut(&mut self, index: usize) -> &mut T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `State`
[INFO] [stderr]  --> src/gem.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 | enum State {
[INFO] [stderr]   |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/gem.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_random`
[INFO] [stderr]   --> src/gem.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn new_random(extra_color: bool) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let mut sys =&mut System::new("Hexgem",400,240);
[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: struct is never constructed: `HexaGridRingInter`
[INFO] [stderr]   --> src/hexagrid.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub struct HexaGridRingInter<'a, T: 'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/hexagrid.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn get_mut(&mut self, index: usize) -> &mut T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/hexagrid.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn set(&mut self, index: usize, value: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_coordinate_valid`
[INFO] [stderr]   --> src/hexagrid.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_coordinate_valid(&self, x: i32, y: i32) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cardinal_to_location`
[INFO] [stderr]   --> src/hexagrid.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn cardinal_to_location(&self, x: usize, y: usize) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_cardinal`
[INFO] [stderr]   --> src/hexagrid.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn get_cardinal(&self, x: usize, y: usize) -> &T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_width`
[INFO] [stderr]    --> src/hexagrid.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn get_width(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_height`
[INFO] [stderr]    --> src/hexagrid.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn get_height(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_some`
[INFO] [stderr]    --> src/hexagrid.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn get_some(&self, x: i32, y: i32) -> Option<&T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `State`
[INFO] [stderr]  --> src/gem.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 | enum State {
[INFO] [stderr]   |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/gem.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_random`
[INFO] [stderr]   --> src/gem.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn new_random(extra_color: bool) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.68s
[INFO] running `"docker" "inspect" "db1b3d738c7088299dafb644e019db4b7c992d658704a99cce4b1d0c5ec427ea"`
[INFO] running `"docker" "rm" "-f" "db1b3d738c7088299dafb644e019db4b7c992d658704a99cce4b1d0c5ec427ea"`
[INFO] [stdout] db1b3d738c7088299dafb644e019db4b7c992d658704a99cce4b1d0c5ec427ea