[INFO] fetching crate mct-rs 0.4.0... [INFO] testing mct-rs-0.4.0 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] extracting crate mct-rs 0.4.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate mct-rs 0.4.0 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate mct-rs 0.4.0 [INFO] tweaked toml for crates.io crate mct-rs 0.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mct-rs 0.4.0 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate mct-rs 0.4.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 00636db24c97d66ce8d98ac07eaeae7a3507b7f67bbb3448689bfac238416f6b [INFO] running `Command { std: "docker" "start" "-a" "00636db24c97d66ce8d98ac07eaeae7a3507b7f67bbb3448689bfac238416f6b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "00636db24c97d66ce8d98ac07eaeae7a3507b7f67bbb3448689bfac238416f6b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "00636db24c97d66ce8d98ac07eaeae7a3507b7f67bbb3448689bfac238416f6b", kill_on_drop: false }` [INFO] [stdout] 00636db24c97d66ce8d98ac07eaeae7a3507b7f67bbb3448689bfac238416f6b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d37b7e3b41a01be1198f14b4284b0e94f09f8ff9516b91e6aa2ac83e4574847a [INFO] running `Command { std: "docker" "start" "-a" "d37b7e3b41a01be1198f14b4284b0e94f09f8ff9516b91e6aa2ac83e4574847a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.175 [INFO] [stderr] Compiling getrandom v0.2.16 [INFO] [stderr] Compiling mct-rs v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around closure body [INFO] [stdout] --> src/mcts.rs:131:61 [INFO] [stdout] | [INFO] [stdout] 131 | let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 131 - let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stdout] 131 + let expq: Vec = qvalues.iter().map(|q| (q - maxq).exp() ).collect(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.36s [INFO] running `Command { std: "docker" "inspect" "d37b7e3b41a01be1198f14b4284b0e94f09f8ff9516b91e6aa2ac83e4574847a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d37b7e3b41a01be1198f14b4284b0e94f09f8ff9516b91e6aa2ac83e4574847a", kill_on_drop: false }` [INFO] [stdout] d37b7e3b41a01be1198f14b4284b0e94f09f8ff9516b91e6aa2ac83e4574847a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 608f6d005418b736ad1409cc46d5188f837022587a53193b193b0315195641ce [INFO] running `Command { std: "docker" "start" "-a" "608f6d005418b736ad1409cc46d5188f837022587a53193b193b0315195641ce", kill_on_drop: false }` [INFO] [stderr] Compiling mct-rs v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around closure body [INFO] [stdout] --> src/mcts.rs:131:61 [INFO] [stdout] | [INFO] [stdout] 131 | let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 131 - let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stdout] 131 + let expq: Vec = qvalues.iter().map(|q| (q - maxq).exp() ).collect(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around closure body [INFO] [stdout] --> src/mcts.rs:131:61 [INFO] [stdout] | [INFO] [stdout] 131 | let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 131 - let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stdout] 131 + let expq: Vec = qvalues.iter().map(|q| (q - maxq).exp() ).collect(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> examples/tictactoe.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 24 | pub(crate) struct TicTacToeMDP { [INFO] [stdout] | ------------ field in this struct [INFO] [stdout] 25 | player: Player, [INFO] [stdout] 26 | state: TicTacToeState, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `TicTacToeMDP` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `state` [INFO] [stdout] --> src/node.rs:228:35 [INFO] [stdout] | [INFO] [stdout] 228 | fn get_transitions(&self, state: &u32, action: &TestAction) -> Vec<(u32, f64)> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_state` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `action` [INFO] [stdout] --> src/node.rs:228:48 [INFO] [stdout] | [INFO] [stdout] 228 | fn get_transitions(&self, state: &u32, action: &TestAction) -> Vec<(u32, f64)> { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `state` [INFO] [stdout] --> src/node.rs:232:30 [INFO] [stdout] | [INFO] [stdout] 232 | fn get_reward(&self, state: &u32, action: &TestAction, next_state: &u32) -> f64 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_state` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `action` [INFO] [stdout] --> src/node.rs:232:43 [INFO] [stdout] | [INFO] [stdout] 232 | fn get_reward(&self, state: &u32, action: &TestAction, next_state: &u32) -> f64 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `next_state` [INFO] [stdout] --> src/node.rs:232:64 [INFO] [stdout] | [INFO] [stdout] 232 | fn get_reward(&self, state: &u32, action: &TestAction, next_state: &u32) -> f64 { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_state` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `DummyUCB` is never constructed [INFO] [stdout] --> src/node.rs:249:12 [INFO] [stdout] | [INFO] [stdout] 249 | struct DummyUCB; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s [INFO] running `Command { std: "docker" "inspect" "608f6d005418b736ad1409cc46d5188f837022587a53193b193b0315195641ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "608f6d005418b736ad1409cc46d5188f837022587a53193b193b0315195641ce", kill_on_drop: false }` [INFO] [stdout] 608f6d005418b736ad1409cc46d5188f837022587a53193b193b0315195641ce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 357f0fc6e3d8da91d7cbf33c0445cbdd9dcd1817b7eb52242a6fed56c8468a3c [INFO] running `Command { std: "docker" "start" "-a" "357f0fc6e3d8da91d7cbf33c0445cbdd9dcd1817b7eb52242a6fed56c8468a3c", kill_on_drop: false }` [INFO] [stderr] warning: unnecessary parentheses around closure body [INFO] [stderr] --> src/mcts.rs:131:61 [INFO] [stderr] | [INFO] [stderr] 131 | let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 131 - let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stderr] 131 + let expq: Vec = qvalues.iter().map(|q| (q - maxq).exp() ).collect(); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `state` [INFO] [stderr] --> src/node.rs:228:35 [INFO] [stderr] | [INFO] [stderr] 228 | fn get_transitions(&self, state: &u32, action: &TestAction) -> Vec<(u32, f64)> { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_state` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `action` [INFO] [stderr] --> src/node.rs:228:48 [INFO] [stderr] | [INFO] [stderr] 228 | fn get_transitions(&self, state: &u32, action: &TestAction) -> Vec<(u32, f64)> { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `state` [INFO] [stderr] --> src/node.rs:232:30 [INFO] [stderr] | [INFO] [stderr] 232 | fn get_reward(&self, state: &u32, action: &TestAction, next_state: &u32) -> f64 { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_state` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `action` [INFO] [stderr] --> src/node.rs:232:43 [INFO] [stderr] | [INFO] [stderr] 232 | fn get_reward(&self, state: &u32, action: &TestAction, next_state: &u32) -> f64 { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `next_state` [INFO] [stderr] --> src/node.rs:232:64 [INFO] [stderr] | [INFO] [stderr] 232 | fn get_reward(&self, state: &u32, action: &TestAction, next_state: &u32) -> f64 { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_state` [INFO] [stderr] [INFO] [stderr] warning: struct `DummyUCB` is never constructed [INFO] [stderr] --> src/node.rs:249:12 [INFO] [stderr] | [INFO] [stderr] 249 | struct DummyUCB; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `mct-rs` (lib) generated 1 warning (run `cargo fix --lib -p mct-rs` to apply 1 suggestion) [INFO] [stderr] warning: `mct-rs` (lib test) generated 7 warnings (1 duplicate) (run `cargo fix --lib -p mct-rs --tests` to apply 5 suggestions) [INFO] [stderr] warning: field `state` is never read [INFO] [stderr] --> examples/tictactoe.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 24 | pub(crate) struct TicTacToeMDP { [INFO] [stderr] | ------------ field in this struct [INFO] [stderr] 25 | player: Player, [INFO] [stderr] 26 | state: TicTacToeState, [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `TicTacToeMDP` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `mct-rs` (example "tictactoe") generated 1 warning [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mct_rs-9a2cdd44f39ae2da) [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test node::tests::test_expand_adds_one_child ... ok [INFO] [stdout] test node::tests::test_get_outcome_child_returns_existing_child ... ok [INFO] [stdout] test node::tests::test_is_full_expanded ... ok [INFO] [stdout] test node::tests::test_select_returns_terminal_node ... ok [INFO] [stdout] test node::tests::test_back_propagate_increments_visits ... ok [INFO] [stdout] test node::tests::test_node_new ... ok [INFO] [stdout] test node::tests::test_expand_terminal_returns_self ... ok [INFO] [stdout] test node::tests::test_select_traverses_fully_expanded ... ok [INFO] [stdout] test node::tests::test_get_outcome_child_adds_new_child ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests mct_rs [INFO] [stderr] warning: unnecessary parentheses around closure body [INFO] [stderr] --> src/mcts.rs:131:61 [INFO] [stderr] | [INFO] [stderr] 131 | let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 131 - let expq: Vec = qvalues.iter().map(|q| ((q - maxq).exp())).collect(); [INFO] [stderr] 131 + let expq: Vec = qvalues.iter().map(|q| (q - maxq).exp() ).collect(); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "357f0fc6e3d8da91d7cbf33c0445cbdd9dcd1817b7eb52242a6fed56c8468a3c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "357f0fc6e3d8da91d7cbf33c0445cbdd9dcd1817b7eb52242a6fed56c8468a3c", kill_on_drop: false }` [INFO] [stdout] 357f0fc6e3d8da91d7cbf33c0445cbdd9dcd1817b7eb52242a6fed56c8468a3c