[INFO] updating cached repository https://github.com/sirkibsirkib/cardgame
[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] 09ad26188796f859f7e916f83c5d1cfb02eb6f3c
[INFO] checking sirkibsirkib/cardgame/09ad26188796f859f7e916f83c5d1cfb02eb6f3c against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fcardgame" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sirkibsirkib/cardgame on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sirkibsirkib/cardgame
[INFO] finished tweaking git repo https://github.com/sirkibsirkib/cardgame
[INFO] tweaked toml for git repo https://github.com/sirkibsirkib/cardgame written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/sirkibsirkib/cardgame already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d7aae832aa5abe595bffa17c82fda0d1edac9ffad24ea75d457a082f7d9f9b1
[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" "7d7aae832aa5abe595bffa17c82fda0d1edac9ffad24ea75d457a082f7d9f9b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d7aae832aa5abe595bffa17c82fda0d1edac9ffad24ea75d457a082f7d9f9b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d7aae832aa5abe595bffa17c82fda0d1edac9ffad24ea75d457a082f7d9f9b1", kill_on_drop: false }`
[INFO] [stdout] 7d7aae832aa5abe595bffa17c82fda0d1edac9ffad24ea75d457a082f7d9f9b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a221d24f7e1a8e346c62dc0f3c8640ff2b038c54939c59a502009cfbda27274
[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" "2a221d24f7e1a8e346c62dc0f3c8640ff2b038c54939c59a502009cfbda27274", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking cardgame v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/card.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]  --> src/card.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{Rng, thread_rng};
[INFO] [stdout]   |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Card`
[INFO] [stdout]  --> src/stack.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use card::{Card, CardFlyweight};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::card::Card`
[INFO] [stdout]  --> src/combat.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ::card::Card;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `card::Database`
[INFO] [stdout]  --> src/screen.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use card::Database;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/card.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]  --> src/card.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{Rng, thread_rng};
[INFO] [stdout]   |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Card`
[INFO] [stdout]  --> src/stack.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use card::{Card, CardFlyweight};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::card::Card`
[INFO] [stdout]  --> src/combat.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ::card::Card;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `card::Database`
[INFO] [stdout]  --> src/screen.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use card::Database;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for i in 0..5 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 x => { worked = false; },
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1_stacks`
[INFO] [stdout]  --> src/combat.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut p1_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p1_stacks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2_stacks`
[INFO] [stdout]  --> src/combat.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut p2_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p2_stacks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/screen.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for j in 0..HEIGHT {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for i in 0..5 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/screen.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |             for i in 0..WIDTH {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 x => { worked = false; },
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1_stacks`
[INFO] [stdout]  --> src/combat.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut p1_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p1_stacks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2_stacks`
[INFO] [stdout]  --> src/combat.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut p2_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_p2_stacks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/screen.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for j in 0..HEIGHT {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/screen.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |             for i in 0..WIDTH {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/combat.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut p1_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ----^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/combat.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut p1_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ----^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/combat.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut p2_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ----^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/combat.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut p2_stacks: Vec<Stack> = vec![];
[INFO] [stdout]   |         ----^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `visible`
[INFO] [stdout]   --> src/card.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn visible(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `visible`
[INFO] [stdout]   --> src/card.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn visible(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `CardType`
[INFO] [stdout]  --> src/card_type.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum CardType {
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combat`
[INFO] [stdout]  --> src/combat.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn combat() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `CardType`
[INFO] [stdout]  --> src/card_type.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum CardType {
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combat`
[INFO] [stdout]  --> src/combat.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn combat() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `coord`
[INFO] [stdout]   --> src/screen.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn coord(index: usize) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `coord`
[INFO] [stdout]   --> src/screen.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn coord(index: usize) -> (usize, usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `abs` should have an upper case name
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const abs: [&'static str; 4] = [
[INFO] [stdout]    |       ^^^ help: convert the identifier to upper case: `ABS`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `abs` should have an upper case name
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const abs: [&'static str; 4] = [
[INFO] [stdout]    |       ^^^ help: convert the identifier to upper case: `ABS`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:69:3
[INFO] [stdout]    |
[INFO] [stdout] 69 |         stdin().read_line(&mut s);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:69:3
[INFO] [stdout]    |
[INFO] [stdout] 69 |         stdin().read_line(&mut s);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "2a221d24f7e1a8e346c62dc0f3c8640ff2b038c54939c59a502009cfbda27274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a221d24f7e1a8e346c62dc0f3c8640ff2b038c54939c59a502009cfbda27274", kill_on_drop: false }`
[INFO] [stdout] 2a221d24f7e1a8e346c62dc0f3c8640ff2b038c54939c59a502009cfbda27274