[INFO] cloning repository https://github.com/aspedrosa/MineSweeper-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aspedrosa/MineSweeper-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faspedrosa%2FMineSweeper-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faspedrosa%2FMineSweeper-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b5ecbf89cb989bf7f91f79cdd162aa1337a5555d [INFO] checking aspedrosa/MineSweeper-rs against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faspedrosa%2FMineSweeper-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/aspedrosa/MineSweeper-rs on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/aspedrosa/MineSweeper-rs [INFO] finished tweaking git repo https://github.com/aspedrosa/MineSweeper-rs [INFO] tweaked toml for git repo https://github.com/aspedrosa/MineSweeper-rs written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/aspedrosa/MineSweeper-rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] be0d7c2aaee9fc9d04de58ff80362b43dc2dbbb8dd3e1ab11ed0a115ab1d4a28 [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" "be0d7c2aaee9fc9d04de58ff80362b43dc2dbbb8dd3e1ab11ed0a115ab1d4a28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "be0d7c2aaee9fc9d04de58ff80362b43dc2dbbb8dd3e1ab11ed0a115ab1d4a28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "be0d7c2aaee9fc9d04de58ff80362b43dc2dbbb8dd3e1ab11ed0a115ab1d4a28", kill_on_drop: false }` [INFO] [stdout] be0d7c2aaee9fc9d04de58ff80362b43dc2dbbb8dd3e1ab11ed0a115ab1d4a28 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 2b07593afb84022bf7de7587eaa3f24f11dd39d0ba43f3585716de791815bca9 [INFO] running `Command { std: "docker" "start" "-a" "2b07593afb84022bf7de7587eaa3f24f11dd39d0ba43f3585716de791815bca9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.82 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking itertools v0.10.0 [INFO] [stderr] Checking rand_core v0.6.1 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking mineswipper v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow` [INFO] [stdout] --> src/board.rs:11:19 [INFO] [stdout] | [INFO] [stdout] 11 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/input/plays.rs:104:5 [INFO] [stdout] | [INFO] [stdout] 104 | /// TODO return more specific error [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 105 | / if inputs.len() != 2 { [INFO] [stdout] 106 | | return Err(InvalidPlay {}); [INFO] [stdout] 107 | | } [INFO] [stdout] | |_____- rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/input/plays.rs:124:5 [INFO] [stdout] | [INFO] [stdout] 124 | /// TODO return a more specific error [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 125 | / if inputs.len() != 3 { [INFO] [stdout] 126 | | return Err(InvalidPlay {}); [INFO] [stdout] 127 | | } [INFO] [stdout] | |_____- rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/input/plays.rs:131:5 [INFO] [stdout] | [INFO] [stdout] 131 | /// TODO return a more specific error [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 132 | / let mode = match inputs[0] { [INFO] [stdout] 133 | | "u" => PlayMode::Unmark, [INFO] [stdout] 134 | | "m" => PlayMode::Mark, [INFO] [stdout] 135 | | "d" => PlayMode::Dig, [INFO] [stdout] 136 | | _ => return Err(InvalidPlay {}), [INFO] [stdout] 137 | | }; [INFO] [stdout] | |______- rustdoc does not generate documentation for statements [INFO] [stdout] | [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `read_parameters` [INFO] [stdout] --> src/main.rs:17:31 [INFO] [stdout] | [INFO] [stdout] 17 | use crate::input::arguments::{read_parameters, Parameters}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow` [INFO] [stdout] --> src/board.rs:11:19 [INFO] [stdout] | [INFO] [stdout] 11 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/input/plays.rs:104:5 [INFO] [stdout] | [INFO] [stdout] 104 | /// TODO return more specific error [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 105 | / if inputs.len() != 2 { [INFO] [stdout] 106 | | return Err(InvalidPlay {}); [INFO] [stdout] 107 | | } [INFO] [stdout] | |_____- rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/input/plays.rs:124:5 [INFO] [stdout] | [INFO] [stdout] 124 | /// TODO return a more specific error [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 125 | / if inputs.len() != 3 { [INFO] [stdout] 126 | | return Err(InvalidPlay {}); [INFO] [stdout] 127 | | } [INFO] [stdout] | |_____- rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/input/plays.rs:131:5 [INFO] [stdout] | [INFO] [stdout] 131 | /// TODO return a more specific error [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 132 | / let mode = match inputs[0] { [INFO] [stdout] 133 | | "u" => PlayMode::Unmark, [INFO] [stdout] 134 | | "m" => PlayMode::Mark, [INFO] [stdout] 135 | | "d" => PlayMode::Dig, [INFO] [stdout] 136 | | _ => return Err(InvalidPlay {}), [INFO] [stdout] 137 | | }; [INFO] [stdout] | |______- rustdoc does not generate documentation for statements [INFO] [stdout] | [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `read_parameters` [INFO] [stdout] --> src/main.rs:17:31 [INFO] [stdout] | [INFO] [stdout] 17 | use crate::input::arguments::{read_parameters, Parameters}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_parameters` [INFO] [stdout] --> src/input/arguments.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | pub fn read_parameters() -> Parameters { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `EMPTY_CELLS` should have a snake case name [INFO] [stdout] --> src/board.rs:148:13 [INFO] [stdout] | [INFO] [stdout] 148 | let EMPTY_CELLS = 40; // TODO calculate this according to difficulty [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `empty_cells` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:50:5 [INFO] [stdout] | [INFO] [stdout] 50 | io::stdout().flush(); [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 `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 51 | io::stdin().read_line(&mut input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:58:5 [INFO] [stdout] | [INFO] [stdout] 58 | io::stdout().flush(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 60 | io::stdin().read_line(&mut input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | io::stdout().flush(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:69:5 [INFO] [stdout] | [INFO] [stdout] 69 | io::stdin().read_line(&mut input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/plays.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | io::stdout().flush(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/plays.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | io::stdin().read_line(input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_parameters` [INFO] [stdout] --> src/input/arguments.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | pub fn read_parameters() -> Parameters { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `EMPTY_CELLS` should have a snake case name [INFO] [stdout] --> src/board.rs:148:13 [INFO] [stdout] | [INFO] [stdout] 148 | let EMPTY_CELLS = 40; // TODO calculate this according to difficulty [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `empty_cells` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:50:5 [INFO] [stdout] | [INFO] [stdout] 50 | io::stdout().flush(); [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 `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 51 | io::stdin().read_line(&mut input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:58:5 [INFO] [stdout] | [INFO] [stdout] 58 | io::stdout().flush(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 60 | io::stdin().read_line(&mut input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | io::stdout().flush(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/arguments.rs:69:5 [INFO] [stdout] | [INFO] [stdout] 69 | io::stdin().read_line(&mut input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/plays.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | io::stdout().flush(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/input/plays.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | io::stdin().read_line(input); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.84s [INFO] running `Command { std: "docker" "inspect" "2b07593afb84022bf7de7587eaa3f24f11dd39d0ba43f3585716de791815bca9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2b07593afb84022bf7de7587eaa3f24f11dd39d0ba43f3585716de791815bca9", kill_on_drop: false }` [INFO] [stdout] 2b07593afb84022bf7de7587eaa3f24f11dd39d0ba43f3585716de791815bca9