Dec 04 20:30:13.508 INFO checking csreid/nqueens-rs against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481 Dec 04 20:30:13.508 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Dec 04 20:30:14.009 INFO [stdout] 6a527b74564610f8958f291dd3411595b5853803c7d9c05b11d1a9ddfed9e608 Dec 04 20:30:14.011 INFO running `"docker" "start" "-a" "6a527b74564610f8958f291dd3411595b5853803c7d9c05b11d1a9ddfed9e608"` Dec 04 20:30:15.823 INFO [stderr] usermod: no changes Dec 04 20:30:15.927 INFO [stderr] Checking stopwatch v0.0.7 Dec 04 20:30:16.771 INFO [stderr] Checking nqueens-rs v0.1.0 (/source) Dec 04 20:30:17.710 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.710 INFO [stderr] --> src/main.rs:118:12 Dec 04 20:30:17.710 INFO [stderr] | Dec 04 20:30:17.710 INFO [stderr] 118 | for i in (0..=N) { Dec 04 20:30:17.710 INFO [stderr] | ^^^^^^^ help: remove these parentheses Dec 04 20:30:17.710 INFO [stderr] | Dec 04 20:30:17.710 INFO [stderr] = note: #[warn(unused_parens)] on by default Dec 04 20:30:17.710 INFO [stderr] Dec 04 20:30:17.710 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.710 INFO [stderr] --> src/main.rs:119:13 Dec 04 20:30:17.710 INFO [stderr] | Dec 04 20:30:17.710 INFO [stderr] 119 | for j in (0..=N) { Dec 04 20:30:17.710 INFO [stderr] | ^^^^^^^ help: remove these parentheses Dec 04 20:30:17.710 INFO [stderr] Dec 04 20:30:17.710 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.710 INFO [stderr] --> src/main.rs:182:12 Dec 04 20:30:17.710 INFO [stderr] | Dec 04 20:30:17.710 INFO [stderr] 182 | for i in (0..N) { Dec 04 20:30:17.710 INFO [stderr] | ^^^^^^ help: remove these parentheses Dec 04 20:30:17.710 INFO [stderr] Dec 04 20:30:17.710 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.710 INFO [stderr] --> src/main.rs:183:13 Dec 04 20:30:17.710 INFO [stderr] | Dec 04 20:30:17.710 INFO [stderr] 183 | for j in (0..N) { Dec 04 20:30:17.710 INFO [stderr] | ^^^^^^ help: remove these parentheses Dec 04 20:30:17.711 INFO [stderr] Dec 04 20:30:17.711 INFO [stderr] warning: unnecessary parentheses around assigned value Dec 04 20:30:17.711 INFO [stderr] --> src/main.rs:245:13 Dec 04 20:30:17.711 INFO [stderr] | Dec 04 20:30:17.711 INFO [stderr] 245 | let time = (sw.elapsed_ms() as f64); Dec 04 20:30:17.711 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses Dec 04 20:30:17.711 INFO [stderr] Dec 04 20:30:17.831 INFO [stderr] warning: unused variable: `i` Dec 04 20:30:17.831 INFO [stderr] --> src/main.rs:118:7 Dec 04 20:30:17.831 INFO [stderr] | Dec 04 20:30:17.831 INFO [stderr] 118 | for i in (0..=N) { Dec 04 20:30:17.831 INFO [stderr] | ^ help: consider using `_i` instead Dec 04 20:30:17.831 INFO [stderr] | Dec 04 20:30:17.831 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 04 20:30:17.831 INFO [stderr] Dec 04 20:30:17.831 INFO [stderr] warning: unused variable: `children` Dec 04 20:30:17.831 INFO [stderr] --> src/main.rs:219:7 Dec 04 20:30:17.831 INFO [stderr] | Dec 04 20:30:17.831 INFO [stderr] 219 | let children = self.children(); Dec 04 20:30:17.831 INFO [stderr] | ^^^^^^^^ help: consider using `_children` instead Dec 04 20:30:17.831 INFO [stderr] Dec 04 20:30:17.848 INFO [stderr] warning: method is never used: `n_queens_bestfs` Dec 04 20:30:17.848 INFO [stderr] --> src/main.rs:193:2 Dec 04 20:30:17.848 INFO [stderr] | Dec 04 20:30:17.848 INFO [stderr] 193 | fn n_queens_bestfs(&self, n:i32) -> (Board, i32) { Dec 04 20:30:17.848 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.848 INFO [stderr] | Dec 04 20:30:17.848 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 04 20:30:17.848 INFO [stderr] Dec 04 20:30:17.849 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.849 INFO [stderr] --> src/main.rs:78:4 Dec 04 20:30:17.849 INFO [stderr] | Dec 04 20:30:17.849 INFO [stderr] 78 | write!(f, "+---"); Dec 04 20:30:17.849 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.849 INFO [stderr] | Dec 04 20:30:17.849 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 04 20:30:17.849 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.849 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.849 INFO [stderr] Dec 04 20:30:17.849 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.849 INFO [stderr] --> src/main.rs:81:3 Dec 04 20:30:17.849 INFO [stderr] | Dec 04 20:30:17.849 INFO [stderr] 81 | write!(f, "+\n"); Dec 04 20:30:17.849 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.849 INFO [stderr] | Dec 04 20:30:17.849 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.849 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.849 INFO [stderr] Dec 04 20:30:17.849 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.849 INFO [stderr] --> src/main.rs:86:6 Dec 04 20:30:17.849 INFO [stderr] | Dec 04 20:30:17.849 INFO [stderr] 86 | write!(f, "| Q "); Dec 04 20:30:17.849 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.850 INFO [stderr] | Dec 04 20:30:17.850 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.850 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.850 INFO [stderr] Dec 04 20:30:17.850 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.850 INFO [stderr] --> src/main.rs:88:6 Dec 04 20:30:17.850 INFO [stderr] | Dec 04 20:30:17.850 INFO [stderr] 88 | write!(f, "| "); Dec 04 20:30:17.850 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.850 INFO [stderr] | Dec 04 20:30:17.850 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.850 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.850 INFO [stderr] Dec 04 20:30:17.850 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.850 INFO [stderr] --> src/main.rs:92:4 Dec 04 20:30:17.850 INFO [stderr] | Dec 04 20:30:17.850 INFO [stderr] 92 | write!(f, "|\n"); Dec 04 20:30:17.851 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.851 INFO [stderr] | Dec 04 20:30:17.851 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.851 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.851 INFO [stderr] Dec 04 20:30:17.851 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.851 INFO [stderr] --> src/main.rs:95:5 Dec 04 20:30:17.851 INFO [stderr] | Dec 04 20:30:17.851 INFO [stderr] 95 | write!(f, "+---"); Dec 04 20:30:17.851 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.851 INFO [stderr] | Dec 04 20:30:17.851 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.851 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.851 INFO [stderr] Dec 04 20:30:17.852 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:17.852 INFO [stderr] --> src/main.rs:97:4 Dec 04 20:30:17.852 INFO [stderr] | Dec 04 20:30:17.852 INFO [stderr] 97 | write!(f, "+\n"); Dec 04 20:30:17.852 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 04 20:30:17.852 INFO [stderr] | Dec 04 20:30:17.852 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:17.852 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:17.852 INFO [stderr] Dec 04 20:30:17.852 INFO [stderr] warning: variable `startTime` should have a snake case name such as `start_time` Dec 04 20:30:17.852 INFO [stderr] --> src/main.rs:220:7 Dec 04 20:30:17.852 INFO [stderr] | Dec 04 20:30:17.852 INFO [stderr] 220 | let startTime = Stopwatch::start_new(); Dec 04 20:30:17.852 INFO [stderr] | ^^^^^^^^^ Dec 04 20:30:17.852 INFO [stderr] | Dec 04 20:30:17.852 INFO [stderr] = note: #[warn(non_snake_case)] on by default Dec 04 20:30:17.852 INFO [stderr] Dec 04 20:30:17.943 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.943 INFO [stderr] --> src/main.rs:118:12 Dec 04 20:30:17.943 INFO [stderr] | Dec 04 20:30:17.943 INFO [stderr] 118 | for i in (0..=N) { Dec 04 20:30:17.943 INFO [stderr] | ^^^^^^^ help: remove these parentheses Dec 04 20:30:17.943 INFO [stderr] | Dec 04 20:30:17.943 INFO [stderr] = note: #[warn(unused_parens)] on by default Dec 04 20:30:17.943 INFO [stderr] Dec 04 20:30:17.943 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.943 INFO [stderr] --> src/main.rs:119:13 Dec 04 20:30:17.943 INFO [stderr] | Dec 04 20:30:17.943 INFO [stderr] 119 | for j in (0..=N) { Dec 04 20:30:17.943 INFO [stderr] | ^^^^^^^ help: remove these parentheses Dec 04 20:30:17.943 INFO [stderr] Dec 04 20:30:17.943 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.943 INFO [stderr] --> src/main.rs:182:12 Dec 04 20:30:17.943 INFO [stderr] | Dec 04 20:30:17.943 INFO [stderr] 182 | for i in (0..N) { Dec 04 20:30:17.943 INFO [stderr] | ^^^^^^ help: remove these parentheses Dec 04 20:30:17.943 INFO [stderr] Dec 04 20:30:17.943 INFO [stderr] warning: unnecessary parentheses around `for` head expression Dec 04 20:30:17.943 INFO [stderr] --> src/main.rs:183:13 Dec 04 20:30:17.943 INFO [stderr] | Dec 04 20:30:17.943 INFO [stderr] 183 | for j in (0..N) { Dec 04 20:30:17.943 INFO [stderr] | ^^^^^^ help: remove these parentheses Dec 04 20:30:17.943 INFO [stderr] Dec 04 20:30:17.943 INFO [stderr] warning: unnecessary parentheses around assigned value Dec 04 20:30:17.943 INFO [stderr] --> src/main.rs:245:13 Dec 04 20:30:17.943 INFO [stderr] | Dec 04 20:30:17.943 INFO [stderr] 245 | let time = (sw.elapsed_ms() as f64); Dec 04 20:30:17.943 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses Dec 04 20:30:17.943 INFO [stderr] Dec 04 20:30:18.047 INFO [stderr] warning: unused variable: `i` Dec 04 20:30:18.047 INFO [stderr] --> src/main.rs:118:7 Dec 04 20:30:18.047 INFO [stderr] | Dec 04 20:30:18.047 INFO [stderr] 118 | for i in (0..=N) { Dec 04 20:30:18.047 INFO [stderr] | ^ help: consider using `_i` instead Dec 04 20:30:18.047 INFO [stderr] | Dec 04 20:30:18.047 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 04 20:30:18.047 INFO [stderr] Dec 04 20:30:18.047 INFO [stderr] warning: unused variable: `children` Dec 04 20:30:18.047 INFO [stderr] --> src/main.rs:219:7 Dec 04 20:30:18.047 INFO [stderr] | Dec 04 20:30:18.047 INFO [stderr] 219 | let children = self.children(); Dec 04 20:30:18.047 INFO [stderr] | ^^^^^^^^ help: consider using `_children` instead Dec 04 20:30:18.047 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: method is never used: `n_queens_bestfs` Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:193:2 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 193 | fn n_queens_bestfs(&self, n:i32) -> (Board, i32) { Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:78:4 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 78 | write!(f, "+---"); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:81:3 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 81 | write!(f, "+\n"); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:86:6 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 86 | write!(f, "| Q "); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:88:6 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 88 | write!(f, "| "); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:92:4 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 92 | write!(f, "|\n"); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:95:5 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 95 | write!(f, "+---"); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.072 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 04 20:30:18.072 INFO [stderr] --> src/main.rs:97:4 Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] 97 | write!(f, "+\n"); Dec 04 20:30:18.072 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 04 20:30:18.072 INFO [stderr] | Dec 04 20:30:18.072 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 04 20:30:18.072 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 04 20:30:18.072 INFO [stderr] Dec 04 20:30:18.073 INFO [stderr] warning: variable `startTime` should have a snake case name such as `start_time` Dec 04 20:30:18.073 INFO [stderr] --> src/main.rs:220:7 Dec 04 20:30:18.073 INFO [stderr] | Dec 04 20:30:18.073 INFO [stderr] 220 | let startTime = Stopwatch::start_new(); Dec 04 20:30:18.073 INFO [stderr] | ^^^^^^^^^ Dec 04 20:30:18.073 INFO [stderr] | Dec 04 20:30:18.073 INFO [stderr] = note: #[warn(non_snake_case)] on by default Dec 04 20:30:18.073 INFO [stderr] Dec 04 20:30:18.115 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.26s Dec 04 20:30:18.123 INFO [stderr] su: No module specific data is present Dec 04 20:30:19.195 INFO running `"docker" "inspect" "6a527b74564610f8958f291dd3411595b5853803c7d9c05b11d1a9ddfed9e608"` Dec 04 20:30:19.478 INFO running `"docker" "rm" "-f" "6a527b74564610f8958f291dd3411595b5853803c7d9c05b11d1a9ddfed9e608"` Dec 04 20:30:19.761 INFO [stdout] 6a527b74564610f8958f291dd3411595b5853803c7d9c05b11d1a9ddfed9e608