[INFO] cloning repository https://github.com/Klapeyron/Markov [INFO] running `"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"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 62d4cd1839e0f7fc96beeaa6dc2a1efb829e1b94 [INFO] checking Klapeyron/Markov against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov" "/workspace/builds/worker-14/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Klapeyron/Markov on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [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-14/source/Cargo.toml [INFO] crate git repo https://github.com/Klapeyron/Markov already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 067a211a49501d8229be21e4b0a691aa788e58df6611d7fe6ac8bc5de14d4589 [INFO] running `"docker" "start" "-a" "067a211a49501d8229be21e4b0a691aa788e58df6611d7fe6ac8bc5de14d4589"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling ryu v1.0.4 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Checking serde_json v1.0.52 [INFO] [stderr] Compiling quote v1.0.4 [INFO] [stderr] Compiling syn v1.0.18 [INFO] [stderr] Compiling serde_derive v1.0.106 [INFO] [stderr] Checking markov v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/markov.rs:206:79 [INFO] [stderr] | [INFO] [stderr] 206 | fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) { [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/markov.rs:206:79 [INFO] [stderr] | [INFO] [stderr] 206 | fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) { [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/markov.rs:87:19 [INFO] [stderr] | [INFO] [stderr] 87 | &Some(ref value) => write!(f, "{:?}, {:?}", self.state, self.action.clone().unwrap()), [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/markov.rs:105:5 [INFO] [stderr] | [INFO] [stderr] 105 | pub fn new() -> MarkovBuilder { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_size` [INFO] [stderr] --> src/markov.rs:132:5 [INFO] [stderr] | [INFO] [stderr] 132 | fn set_size(&mut self, x: usize, y: usize) -> &mut MarkovBuilder { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_state` [INFO] [stderr] --> src/markov.rs:137:5 [INFO] [stderr] | [INFO] [stderr] 137 | fn set_state(&mut self, state: State, x: usize, y: usize) -> &mut MarkovBuilder { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/markov.rs:171:5 [INFO] [stderr] | [INFO] [stderr] 171 | fn new() -> Markov { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/matrix.rs:51:9 [INFO] [stderr] | [INFO] [stderr] 51 | write!(f, "["); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/matrix.rs:53:13 [INFO] [stderr] | [INFO] [stderr] 53 | write!(f, "\n"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/matrix.rs:55:17 [INFO] [stderr] | [INFO] [stderr] 55 | write!(f, "[{:?}], ", elem); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/markov.rs:87:19 [INFO] [stderr] | [INFO] [stderr] 87 | &Some(ref value) => write!(f, "{:?}, {:?}", self.state, self.action.clone().unwrap()), [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/markov.rs:333:9 [INFO] [stderr] | [INFO] [stderr] 333 | let mut markov: Markov = MarkovBuilder::new() [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/markov.rs:348:9 [INFO] [stderr] | [INFO] [stderr] 348 | let mut markov: Markov = MarkovBuilder::new() [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/markov.rs:380:9 [INFO] [stderr] | [INFO] [stderr] 380 | let mut markov: Markov = MarkovBuilder::new() [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/markov.rs:428:9 [INFO] [stderr] | [INFO] [stderr] 428 | let mut markov: Markov = MarkovBuilder::new() [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_size` [INFO] [stderr] --> src/markov.rs:132:5 [INFO] [stderr] | [INFO] [stderr] 132 | fn set_size(&mut self, x: usize, y: usize) -> &mut MarkovBuilder { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/markov.rs:171:5 [INFO] [stderr] | [INFO] [stderr] 171 | fn new() -> Markov { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/matrix.rs:51:9 [INFO] [stderr] | [INFO] [stderr] 51 | write!(f, "["); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/matrix.rs:53:13 [INFO] [stderr] | [INFO] [stderr] 53 | write!(f, "\n"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/matrix.rs:55:17 [INFO] [stderr] | [INFO] [stderr] 55 | write!(f, "[{:?}], ", elem); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 27.98s [INFO] running `"docker" "inspect" "067a211a49501d8229be21e4b0a691aa788e58df6611d7fe6ac8bc5de14d4589"` [INFO] running `"docker" "rm" "-f" "067a211a49501d8229be21e4b0a691aa788e58df6611d7fe6ac8bc5de14d4589"` [INFO] [stdout] 067a211a49501d8229be21e4b0a691aa788e58df6611d7fe6ac8bc5de14d4589