[INFO] cloning repository https://github.com/walston/chess-keypad
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/walston/chess-keypad" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalston%2Fchess-keypad", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalston%2Fchess-keypad'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cf1be0c178d7b5ab377899acd82850d54d63d97
[INFO] testing walston/chess-keypad against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalston%2Fchess-keypad" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/walston/chess-keypad on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/walston/chess-keypad
[INFO] finished tweaking git repo https://github.com/walston/chess-keypad
[INFO] tweaked toml for git repo https://github.com/walston/chess-keypad written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/walston/chess-keypad already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ca1f4909f88b2187a77a43cb0dd2d319d9e7e02c4d42d07c828abb2f1fa5165
[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" "7ca1f4909f88b2187a77a43cb0dd2d319d9e7e02c4d42d07c828abb2f1fa5165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ca1f4909f88b2187a77a43cb0dd2d319d9e7e02c4d42d07c828abb2f1fa5165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca1f4909f88b2187a77a43cb0dd2d319d9e7e02c4d42d07c828abb2f1fa5165", kill_on_drop: false }`
[INFO] [stdout] 7ca1f4909f88b2187a77a43cb0dd2d319d9e7e02c4d42d07c828abb2f1fa5165
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e73549b70abf05b8a251b32a1aeb55e919c0b4a2b4057b1326cd6d4387f2872d
[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" "e73549b70abf05b8a251b32a1aeb55e919c0b4a2b4057b1326cd6d4387f2872d", kill_on_drop: false }`
[INFO] [stderr]    Compiling chess-keypad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Key`
[INFO] [stdout]  --> src/lib.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Key {
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Piece`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub type Piece = dyn Move;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "e73549b70abf05b8a251b32a1aeb55e919c0b4a2b4057b1326cd6d4387f2872d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73549b70abf05b8a251b32a1aeb55e919c0b4a2b4057b1326cd6d4387f2872d", kill_on_drop: false }`
[INFO] [stdout] e73549b70abf05b8a251b32a1aeb55e919c0b4a2b4057b1326cd6d4387f2872d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ceea95ce96e9e2105b704356b3adf1558edd4ff2ff90502d0dcf1d2fac9fb155
[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" "ceea95ce96e9e2105b704356b3adf1558edd4ff2ff90502d0dcf1d2fac9fb155", kill_on_drop: false }`
[INFO] [stdout] warning: enum is never used: `Key`
[INFO] [stdout]  --> src/lib.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Key {
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chess-keypad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias is never used: `Piece`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub type Piece = dyn Move;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `dyn pieces::Move` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:150:21
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `dyn pieces::Move`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `pieces::Move` cannot be made into an object
[INFO] [stdout]    --> src/lib.rs:150:21
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ `pieces::Move` cannot be made into an object
[INFO] [stdout]     |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]    --> src/lib.rs:27:12
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub trait Move {
[INFO] [stdout]     |               ---- this trait cannot be made into an object...
[INFO] [stdout] 27  |         fn next(_start: &char) -> Option<Vec<char>> {
[INFO] [stdout]     |            ^^^^ ...because associated function `next` has no `self` parameter
[INFO] [stdout] help: consider turning `next` into a method by giving it a `&self` argument
[INFO] [stdout]     |
[INFO] [stdout] 27  |         fn next(&self, _start: &char) -> Option<Vec<char>> {
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] help: alternatively, consider constraining `next` so it does not apply to trait objects
[INFO] [stdout]     |
[INFO] [stdout] 27  |         fn next(_start: &char) -> Option<Vec<char>> where Self: Sized {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:150:42
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                          ^^^^^^ expected trait object `dyn pieces::Move`, found struct `pieces::Rook`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected trait object `dyn pieces::Move`
[INFO] [stdout]                      found struct `pieces::Rook`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `dyn pieces::Move` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `dyn pieces::Move`
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `dyn pieces::Move` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `dyn pieces::Move`
[INFO] [stdout]     = note: slice and array elements must have `Sized` type
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `pieces::Move` cannot be made into an object
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `pieces::Move` cannot be made into an object
[INFO] [stdout]     |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]    --> src/lib.rs:27:12
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub trait Move {
[INFO] [stdout]     |               ---- this trait cannot be made into an object...
[INFO] [stdout] 27  |         fn next(_start: &char) -> Option<Vec<char>> {
[INFO] [stdout]     |            ^^^^ ...because associated function `next` has no `self` parameter
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider turning `next` into a method by giving it a `&self` argument
[INFO] [stdout]     |
[INFO] [stdout] 27  |         fn next(&self, _start: &char) -> Option<Vec<char>> {
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] help: alternatively, consider constraining `next` so it does not apply to trait objects
[INFO] [stdout]     |
[INFO] [stdout] 27  |         fn next(_start: &char) -> Option<Vec<char>> where Self: Sized {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `dyn pieces::Move` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `dyn pieces::Move`
[INFO] [stdout]     = note: slice and array elements must have `Sized` type
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `dyn pieces::Move` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `dyn pieces::Move`
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `pieces::Move` cannot be made into an object
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let pieces: Vec<dyn Move> = vec![Rook{}, Knight{}, Bishop{}, Queen{}, King{}];
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `pieces::Move` cannot be made into an object
[INFO] [stdout]     |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]    --> src/lib.rs:27:12
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub trait Move {
[INFO] [stdout]     |               ---- this trait cannot be made into an object...
[INFO] [stdout] 27  |         fn next(_start: &char) -> Option<Vec<char>> {
[INFO] [stdout]     |            ^^^^ ...because associated function `next` has no `self` parameter
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider turning `next` into a method by giving it a `&self` argument
[INFO] [stdout]     |
[INFO] [stdout] 27  |         fn next(&self, _start: &char) -> Option<Vec<char>> {
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] help: alternatively, consider constraining `next` so it does not apply to trait objects
[INFO] [stdout]     |
[INFO] [stdout] 27  |         fn next(_start: &char) -> Option<Vec<char>> where Self: Sized {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `iter` found for struct `Vec` in the current scope
[INFO] [stdout]    --> src/lib.rs:153:29
[INFO] [stdout]     |
[INFO] [stdout] 153 |         for piece in pieces.iter() {
[INFO] [stdout]     |                             ^^^^ method not found in `Vec<dyn pieces::Move>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0038, E0277, E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0038`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chess-keypad` due to 11 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ceea95ce96e9e2105b704356b3adf1558edd4ff2ff90502d0dcf1d2fac9fb155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ceea95ce96e9e2105b704356b3adf1558edd4ff2ff90502d0dcf1d2fac9fb155", kill_on_drop: false }`
[INFO] [stdout] ceea95ce96e9e2105b704356b3adf1558edd4ff2ff90502d0dcf1d2fac9fb155
