[INFO] cloning repository https://github.com/swizzard/boggler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/swizzard/boggler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswizzard%2Fboggler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswizzard%2Fboggler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cc01442ec61024df5448d8460f06d2fcdd7e2531 [INFO] checking swizzard/boggler against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswizzard%2Fboggler" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/swizzard/boggler on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/swizzard/boggler [INFO] finished tweaking git repo https://github.com/swizzard/boggler [INFO] tweaked toml for git repo https://github.com/swizzard/boggler written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/swizzard/boggler already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 468181b41117145d5b55e1a99274ac327573f948b21f59cd0fcbb28fbeb8cb39 [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" "468181b41117145d5b55e1a99274ac327573f948b21f59cd0fcbb28fbeb8cb39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "468181b41117145d5b55e1a99274ac327573f948b21f59cd0fcbb28fbeb8cb39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "468181b41117145d5b55e1a99274ac327573f948b21f59cd0fcbb28fbeb8cb39", kill_on_drop: false }` [INFO] [stdout] 468181b41117145d5b55e1a99274ac327573f948b21f59cd0fcbb28fbeb8cb39 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 542d746593dcb603b2b6e978560aefc8a9dfcf79692215c314ed93a2a8c1dc9f [INFO] running `Command { std: "docker" "start" "-a" "542d746593dcb603b2b6e978560aefc8a9dfcf79692215c314ed93a2a8c1dc9f", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking rand_core v0.2.1 [INFO] [stderr] Checking ascii v0.8.7 [INFO] [stderr] Checking textwrap v0.9.0 [INFO] [stderr] Checking atty v0.2.10 [INFO] [stderr] Checking rand v0.5.1 [INFO] [stderr] Checking clap v2.31.2 [INFO] [stderr] Checking boggler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning[E0170]: pattern binding `q` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | let q = &AsciiChar::from('q').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::q` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bindings_with_variant_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `u` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:99:13 [INFO] [stdout] | [INFO] [stdout] 99 | let u = &AsciiChar::from('u').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:102:13 [INFO] [stdout] | [INFO] [stdout] 102 | for c in word.chars() { [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:143:26 [INFO] [stdout] | [INFO] [stdout] 143 | Some(c) => self.children.get(c).and_then(|ref child| child.find(&mut chrs, &ascii_word)), [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:181:18 [INFO] [stdout] | [INFO] [stdout] 181 | Some(c) => self.children.entry(*c).or_insert(BTNode::new()).insert(chrs, word), [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:199:18 [INFO] [stdout] | [INFO] [stdout] 199 | Some(c) => self.children.get(c).and_then(|child| child.find(chrs, word)) [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `seen` [INFO] [stdout] --> src/solver.rs:156:13 [INFO] [stdout] | [INFO] [stdout] 156 | let mut seen: HashSet = HashSet::with_capacity(16); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_seen` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `adjcts` [INFO] [stdout] --> src/solver.rs:158:17 [INFO] [stdout] | [INFO] [stdout] 158 | let adjcts = board.adjacents(x, y); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_adjcts` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/solver.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 154 | let mut x = 0; [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/solver.rs:155:13 [INFO] [stdout] | [INFO] [stdout] 155 | let mut y = 0; [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/solver.rs:156:13 [INFO] [stdout] | [INFO] [stdout] 156 | let mut seen: HashSet = HashSet::with_capacity(16); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `q` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | let q = &AsciiChar::from('q').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::q` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bindings_with_variant_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `u` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:99:13 [INFO] [stdout] | [INFO] [stdout] 99 | let u = &AsciiChar::from('u').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:102:13 [INFO] [stdout] | [INFO] [stdout] 102 | for c in word.chars() { [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:143:26 [INFO] [stdout] | [INFO] [stdout] 143 | Some(c) => self.children.get(c).and_then(|ref child| child.find(&mut chrs, &ascii_word)), [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:181:18 [INFO] [stdout] | [INFO] [stdout] 181 | Some(c) => self.children.entry(*c).or_insert(BTNode::new()).insert(chrs, word), [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `c` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:199:18 [INFO] [stdout] | [INFO] [stdout] 199 | Some(c) => self.children.get(c).and_then(|child| child.find(chrs, word)) [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `h` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:220:13 [INFO] [stdout] | [INFO] [stdout] 220 | let h = AsciiChar::from('h').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::h` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `e` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:221:13 [INFO] [stdout] | [INFO] [stdout] 221 | let e = AsciiChar::from('e').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `r` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | let r = AsciiChar::from('r').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::r` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `h` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:231:13 [INFO] [stdout] | [INFO] [stdout] 231 | let h = AsciiChar::from('h').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::h` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `e` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:232:13 [INFO] [stdout] | [INFO] [stdout] 232 | let e = AsciiChar::from('e').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `r` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:233:13 [INFO] [stdout] | [INFO] [stdout] 233 | let r = AsciiChar::from('r').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::r` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning[E0170]: pattern binding `o` is named the same as one of the variants of the type `solver::ascii::AsciiChar` [INFO] [stdout] --> src/solver.rs:234:13 [INFO] [stdout] | [INFO] [stdout] 234 | let o = AsciiChar::from('o').unwrap(); [INFO] [stdout] | ^ help: to match on the variant, qualify the path: `solver::ascii::AsciiChar::o` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `find_letter` [INFO] [stdout] --> src/solver.rs:149:8 [INFO] [stdout] | [INFO] [stdout] 149 | fn find_letter(&self, chr: &AsciiChar) -> Option<&BTNode> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `seen` [INFO] [stdout] --> src/solver.rs:156:13 [INFO] [stdout] | [INFO] [stdout] 156 | let mut seen: HashSet = HashSet::with_capacity(16); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_seen` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `adjcts` [INFO] [stdout] --> src/solver.rs:158:17 [INFO] [stdout] | [INFO] [stdout] 158 | let adjcts = board.adjacents(x, y); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_adjcts` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0170`. [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/solver.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 154 | let mut x = 0; [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/solver.rs:155:13 [INFO] [stdout] | [INFO] [stdout] 155 | let mut y = 0; [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/solver.rs:156:13 [INFO] [stdout] | [INFO] [stdout] 156 | let mut seen: HashSet = HashSet::with_capacity(16); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0170`. [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.21s [INFO] running `Command { std: "docker" "inspect" "542d746593dcb603b2b6e978560aefc8a9dfcf79692215c314ed93a2a8c1dc9f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "542d746593dcb603b2b6e978560aefc8a9dfcf79692215c314ed93a2a8c1dc9f", kill_on_drop: false }` [INFO] [stdout] 542d746593dcb603b2b6e978560aefc8a9dfcf79692215c314ed93a2a8c1dc9f