[INFO] updating cached repository https://github.com/Craig-Macomber/Life-Struggle
[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] 051d4626dafb950554469862d922425ceb2d3ff3
[INFO] testing Craig-Macomber/Life-Struggle against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FCraig-Macomber%2FLife-Struggle" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Craig-Macomber/Life-Struggle 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/Craig-Macomber/Life-Struggle
[INFO] finished tweaking git repo https://github.com/Craig-Macomber/Life-Struggle
[INFO] tweaked toml for git repo https://github.com/Craig-Macomber/Life-Struggle written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Craig-Macomber/Life-Struggle 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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] 124d74a10ed2d3dd2988e926479be22543532bdf9bd38d30ac7f5193f02796d5
[INFO] running `"docker" "start" "-a" "124d74a10ed2d3dd2988e926479be22543532bdf9bd38d30ac7f5193f02796d5"`
[INFO] [stderr]    Compiling life_struggle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/game.rs:18:46
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn struggle(generations: usize, tile_a: &LifeTileSrc, tile_b: &LifeTileSrc) -> (isize, isize) {
[INFO] [stderr]    |                                              ^^^^^^^^^^^ help: use `dyn`: `dyn LifeTileSrc`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/game.rs:18:68
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn struggle(generations: usize, tile_a: &LifeTileSrc, tile_b: &LifeTileSrc) -> (isize, isize) {
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^ help: use `dyn`: `dyn LifeTileSrc`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/game.rs:33:52
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn struggle_board(generations: usize, tile_a: &LifeTileSrc, tile_b: &LifeTileSrc) -> Option<B> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^ help: use `dyn`: `dyn LifeTileSrc`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/game.rs:33:74
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn struggle_board(generations: usize, tile_a: &LifeTileSrc, tile_b: &LifeTileSrc) -> Option<B> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^^^ help: use `dyn`: `dyn LifeTileSrc`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tile.rs:19:25
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn copy_from(t_in: &LifeTileSrc) -> Self {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn LifeTileSrc`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `life_struggle`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "124d74a10ed2d3dd2988e926479be22543532bdf9bd38d30ac7f5193f02796d5"`
[INFO] running `"docker" "rm" "-f" "124d74a10ed2d3dd2988e926479be22543532bdf9bd38d30ac7f5193f02796d5"`
[INFO] [stdout] 124d74a10ed2d3dd2988e926479be22543532bdf9bd38d30ac7f5193f02796d5