[INFO] cloning repository https://github.com/Miyabi-ill/ant-book-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Miyabi-ill/ant-book-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMiyabi-ill%2Fant-book-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMiyabi-ill%2Fant-book-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f87539668ce6d30ebeb48eca2bb55c6b347eb002
[INFO] testing Miyabi-ill/ant-book-rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMiyabi-ill%2Fant-book-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Miyabi-ill/ant-book-rust on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Miyabi-ill/ant-book-rust
[INFO] finished tweaking git repo https://github.com/Miyabi-ill/ant-book-rust
[INFO] tweaked toml for git repo https://github.com/Miyabi-ill/ant-book-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Miyabi-ill/ant-book-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e28e07fc4f60bd4948f6bcc17c975877a41d61c7e5e7e3a9bc46c019707735c9
[INFO] running `Command { std: "docker" "start" "-a" "e28e07fc4f60bd4948f6bcc17c975877a41d61c7e5e7e3a9bc46c019707735c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e28e07fc4f60bd4948f6bcc17c975877a41d61c7e5e7e3a9bc46c019707735c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e28e07fc4f60bd4948f6bcc17c975877a41d61c7e5e7e3a9bc46c019707735c9", kill_on_drop: false }`
[INFO] [stdout] e28e07fc4f60bd4948f6bcc17c975877a41d61c7e5e7e3a9bc46c019707735c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b74e8adbb84d6903d2b7fd488becfb84a884446425fb9bc4866c7c819e23333
[INFO] running `Command { std: "docker" "start" "-a" "8b74e8adbb84d6903d2b7fd488becfb84a884446425fb9bc4866c7c819e23333", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ant-book-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/c2_1/partial_sum.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn partial_sum(n: usize, a: Vec<i32>, k: i32) -> bool {
[INFO] [stdout]   |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fib`
[INFO] [stdout]   --> src/c2_1/fib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn fib(&mut self, n: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `partial_sum`
[INFO] [stdout]  --> src/c2_1/partial_sum.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn partial_sum(n: usize, a: Vec<i32>, k: i32) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `search`
[INFO] [stdout]  --> src/c2_1/partial_sum.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn search(a: &Vec<i32>, k: i32, index: usize, sum: i32) -> bool {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lake_counting`
[INFO] [stdout]  --> src/c2_1/lake_counting.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn lake_counting(n: usize, m: usize, map: Vec<Vec<bool>>) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill`
[INFO] [stdout]   --> src/c2_1/lake_counting.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn fill(x: isize, y: isize, map: &mut Vec<Vec<bool>>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INF`
[INFO] [stdout]  --> src/c2_1/min_distance.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | const INF: u32 = 100_000_000;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/c2_1/min_distance.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `MapInfo` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/c2_1/min_distance.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(PartialEq, Eq, Clone, Copy)]
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Wall`
[INFO] [stdout]  --> src/c2_1/min_distance.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Wall,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `MapInfo` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/c2_1/min_distance.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(PartialEq, Eq, Clone, Copy)]
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Start`
[INFO] [stdout]  --> src/c2_1/min_distance.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Start,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `MapInfo` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/c2_1/min_distance.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(PartialEq, Eq, Clone, Copy)]
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goal`
[INFO] [stdout]   --> src/c2_1/min_distance.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Goal,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `MapInfo` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/c2_1/min_distance.rs:5:25
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(PartialEq, Eq, Clone, Copy)]
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Map`
[INFO] [stdout]   --> src/c2_1/min_distance.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Map {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/c2_1/min_distance.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn create(map: Vec<Vec<MapInfo>>) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `min_distance`
[INFO] [stdout]   --> src/c2_1/min_distance.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn min_distance(mut self) -> Result<u32, ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIRECTIONS`
[INFO] [stdout]   --> src/c2_1/min_distance.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             const DIRECTIONS: [(i32, i32); 4] = [(-1, 0), (1, 0), (0, -1), (0, 1)];
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 15 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 `ant-book-rust` due to 2 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8b74e8adbb84d6903d2b7fd488becfb84a884446425fb9bc4866c7c819e23333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b74e8adbb84d6903d2b7fd488becfb84a884446425fb9bc4866c7c819e23333", kill_on_drop: false }`
[INFO] [stdout] 8b74e8adbb84d6903d2b7fd488becfb84a884446425fb9bc4866c7c819e23333