[INFO] cloning repository https://github.com/Johnson-A/Crabby
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Johnson-A/Crabby" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnson-A%2FCrabby", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnson-A%2FCrabby'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b94520c42b036b7c94f0670a101d78f1b225d882
[INFO] testing Johnson-A/Crabby against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnson-A%2FCrabby" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Johnson-A/Crabby on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Johnson-A/Crabby
[INFO] finished tweaking git repo https://github.com/Johnson-A/Crabby
[INFO] tweaked toml for git repo https://github.com/Johnson-A/Crabby written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Johnson-A/Crabby already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df8d0bd924d2434c4ad0b3318b1e13e06d29d7429ff2335da475c09902d875e1
[INFO] running `Command { std: "docker" "start" "-a" "df8d0bd924d2434c4ad0b3318b1e13e06d29d7429ff2335da475c09902d875e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df8d0bd924d2434c4ad0b3318b1e13e06d29d7429ff2335da475c09902d875e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df8d0bd924d2434c4ad0b3318b1e13e06d29d7429ff2335da475c09902d875e1", kill_on_drop: false }`
[INFO] [stdout] df8d0bd924d2434c4ad0b3318b1e13e06d29d7429ff2335da475c09902d875e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba0bb436b6d790ff2ec966c5e9ee6d40927d6eddcc580aacbf0c2a212f906474
[INFO] running `Command { std: "docker" "start" "-a" "ba0bb436b6d790ff2ec966c5e9ee6d40927d6eddcc580aacbf0c2a212f906474", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi v0.2.7
[INFO] [stderr]    Compiling libc v0.2.12
[INFO] [stderr]    Compiling itertools v0.4.16
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling time v0.1.35
[INFO] [stderr]    Compiling crabby v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns, test, associated_consts, custom_attribute)]
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crabby` due to 3 previous errors
[INFO] [stdout] error: expected one of `,`, `@`, `]`, or `|`, found `..`
[INFO] [stdout]    --> src/board.rs:198:46
[INFO] [stdout]     |
[INFO] [stdout] 198 |         if let [sc, sr, dc, dr, ref promotion..] = moves[..] {
[INFO] [stdout]     |                                              ^^ expected one of `,`, `@`, `]`, or `|`
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to bind the contents of the rest of the array pattern into `promotion`, use `@`
[INFO] [stdout]     |
[INFO] [stdout] 198 |         if let [sc, sr, dc, dr, ref promotion @ ..] = moves[..] {
[INFO] [stdout]     |                                               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ba0bb436b6d790ff2ec966c5e9ee6d40927d6eddcc580aacbf0c2a212f906474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba0bb436b6d790ff2ec966c5e9ee6d40927d6eddcc580aacbf0c2a212f906474", kill_on_drop: false }`
[INFO] [stdout] ba0bb436b6d790ff2ec966c5e9ee6d40927d6eddcc580aacbf0c2a212f906474