[INFO] cloning repository https://github.com/Klapeyron/Markov [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Klapeyron/Markov" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 62d4cd1839e0f7fc96beeaa6dc2a1efb829e1b94 [INFO] checking Klapeyron/Markov against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov" "/workspace/builds/worker-80/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-80/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Klapeyron/Markov on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Klapeyron/Markov [INFO] finished tweaking git repo https://github.com/Klapeyron/Markov [INFO] tweaked toml for git repo https://github.com/Klapeyron/Markov written to /workspace/builds/worker-80/source/Cargo.toml [INFO] crate git repo https://github.com/Klapeyron/Markov already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ryu v1.0.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c3d843359e0fce5571d02d5c74b5bb9ba74117cd40bad30b2a525d19303ef266 [INFO] running `Command { std: "docker" "start" "-a" "c3d843359e0fce5571d02d5c74b5bb9ba74117cd40bad30b2a525d19303ef266", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c3d843359e0fce5571d02d5c74b5bb9ba74117cd40bad30b2a525d19303ef266", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c3d843359e0fce5571d02d5c74b5bb9ba74117cd40bad30b2a525d19303ef266", kill_on_drop: false }` [INFO] [stdout] c3d843359e0fce5571d02d5c74b5bb9ba74117cd40bad30b2a525d19303ef266 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7cf5a20817956aacdada9dc92a255dec82d4ccae4a69b196e3a09e24d2eecb86 [INFO] running `Command { std: "docker" "start" "-a" "7cf5a20817956aacdada9dc92a255dec82d4ccae4a69b196e3a09e24d2eecb86", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.6 [INFO] [stderr] Compiling serde_json v1.0.72 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Checking markov v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/markov.rs:206:79 [INFO] [stdout] | [INFO] [stdout] 206 | fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 206 - fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) { [INFO] [stdout] 206 + fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> f64 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/markov.rs:206:79 [INFO] [stdout] | [INFO] [stdout] 206 | fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 206 - fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) { [INFO] [stdout] 206 + fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> f64 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/markov.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | &Some(ref value) => write!(f, "{:?}, {:?}", self.state, self.action.clone().unwrap()), [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/markov.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | &Some(ref value) => write!(f, "{:?}, {:?}", self.state, self.action.clone().unwrap()), [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/markov.rs:105:12 [INFO] [stdout] | [INFO] [stdout] 105 | pub fn new() -> MarkovBuilder { [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: `set_size` [INFO] [stdout] --> src/markov.rs:132:8 [INFO] [stdout] | [INFO] [stdout] 132 | fn set_size(&mut self, x: usize, y: usize) -> &mut MarkovBuilder { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `set_state` [INFO] [stdout] --> src/markov.rs:137:8 [INFO] [stdout] | [INFO] [stdout] 137 | fn set_state(&mut self, state: State, x: usize, y: usize) -> &mut MarkovBuilder { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/markov.rs:171:8 [INFO] [stdout] | [INFO] [stdout] 171 | fn new() -> Markov { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/matrix.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | write!(f, "["); [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] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/matrix.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 53 | write!(f, "\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/matrix.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | write!(f, "[{:?}], ", elem); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/markov.rs:333:9 [INFO] [stdout] | [INFO] [stdout] 333 | let mut markov: Markov = MarkovBuilder::new() [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/markov.rs:348:9 [INFO] [stdout] | [INFO] [stdout] 348 | let mut markov: Markov = MarkovBuilder::new() [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/markov.rs:380:9 [INFO] [stdout] | [INFO] [stdout] 380 | let mut markov: Markov = MarkovBuilder::new() [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/markov.rs:428:9 [INFO] [stdout] | [INFO] [stdout] 428 | let mut markov: Markov = MarkovBuilder::new() [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `set_size` [INFO] [stdout] --> src/markov.rs:132:8 [INFO] [stdout] | [INFO] [stdout] 132 | fn set_size(&mut self, x: usize, y: usize) -> &mut MarkovBuilder { [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: `new` [INFO] [stdout] --> src/markov.rs:171:8 [INFO] [stdout] | [INFO] [stdout] 171 | fn new() -> Markov { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/matrix.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | write!(f, "["); [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] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/matrix.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 53 | write!(f, "\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/matrix.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | write!(f, "[{:?}], ", elem); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 25.41s [INFO] running `Command { std: "docker" "inspect" "7cf5a20817956aacdada9dc92a255dec82d4ccae4a69b196e3a09e24d2eecb86", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7cf5a20817956aacdada9dc92a255dec82d4ccae4a69b196e3a09e24d2eecb86", kill_on_drop: false }` [INFO] [stdout] 7cf5a20817956aacdada9dc92a255dec82d4ccae4a69b196e3a09e24d2eecb86