[INFO] updating cached repository https://github.com/WiebeCnossen/a17d22
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9bdb27ccce4c825bc111bc947459ac39a8eedcc9
[INFO] testing WiebeCnossen/a17d22 against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiebeCnossen%2Fa17d22" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WiebeCnossen/a17d22 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WiebeCnossen/a17d22
[INFO] finished tweaking git repo https://github.com/WiebeCnossen/a17d22
[INFO] tweaked toml for git repo https://github.com/WiebeCnossen/a17d22 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/WiebeCnossen/a17d22 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdceb4da1def0670f4fba9530be0e81aa4dc1af5f10aa1df9754603b9af42182
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cdceb4da1def0670f4fba9530be0e81aa4dc1af5f10aa1df9754603b9af42182", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdceb4da1def0670f4fba9530be0e81aa4dc1af5f10aa1df9754603b9af42182", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdceb4da1def0670f4fba9530be0e81aa4dc1af5f10aa1df9754603b9af42182", kill_on_drop: false }`
[INFO] [stdout] cdceb4da1def0670f4fba9530be0e81aa4dc1af5f10aa1df9754603b9af42182
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23f7dabe2b4b9c504c53b8fcf51bf826e2658f5d665923ff65d9284c28ca9607
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23f7dabe2b4b9c504c53b8fcf51bf826e2658f5d665923ff65d9284c28ca9607", kill_on_drop: false }`
[INFO] [stderr]    Compiling a17d22 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_and_modify)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:157:27
[INFO] [stdout]     |
[INFO] [stdout] 157 | fn timed(label: &str, f: &Fn()) {
[INFO] [stdout]     |                           ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:277:28
[INFO] [stdout]     |
[INFO] [stdout] 277 | fn test_input<Grid>(read: &Fn(&[&str]) -> Grid) -> Grid {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&[&str]) -> Grid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:281:33
[INFO] [stdout]     |
[INFO] [stdout] 281 | fn challenge_input<Grid>(read: &Fn(&[&str]) -> Grid) -> Grid {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&[&str]) -> Grid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `a17d22`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "23f7dabe2b4b9c504c53b8fcf51bf826e2658f5d665923ff65d9284c28ca9607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23f7dabe2b4b9c504c53b8fcf51bf826e2658f5d665923ff65d9284c28ca9607", kill_on_drop: false }`
[INFO] [stdout] 23f7dabe2b4b9c504c53b8fcf51bf826e2658f5d665923ff65d9284c28ca9607