[INFO] cloning repository https://github.com/Mr-Helpful/scrabble.rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mr-Helpful/scrabble.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMr-Helpful%2Fscrabble.rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMr-Helpful%2Fscrabble.rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cb9662b2f6fb74bec5e1c6eed9181f118ed2fd63 [INFO] building Mr-Helpful/scrabble.rs against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMr-Helpful%2Fscrabble.rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Mr-Helpful/scrabble.rs on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Mr-Helpful/scrabble.rs [INFO] finished tweaking git repo https://github.com/Mr-Helpful/scrabble.rs [INFO] tweaked toml for git repo https://github.com/Mr-Helpful/scrabble.rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Mr-Helpful/scrabble.rs 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded weak-table v0.3.2 [INFO] [stderr] Downloaded allwords v0.1.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2e8e6acd559963ccb38da833b9b9d99342ca8bebf22676c3564c131a0b169ba7 [INFO] running `Command { std: "docker" "start" "-a" "2e8e6acd559963ccb38da833b9b9d99342ca8bebf22676c3564c131a0b169ba7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2e8e6acd559963ccb38da833b9b9d99342ca8bebf22676c3564c131a0b169ba7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e8e6acd559963ccb38da833b9b9d99342ca8bebf22676c3564c131a0b169ba7", kill_on_drop: false }` [INFO] [stdout] 2e8e6acd559963ccb38da833b9b9d99342ca8bebf22676c3564c131a0b169ba7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 644e39b04bd64fdfef0f8dacf1bf4ef2ce1023e6c701380ef28c649e9bff2281 [INFO] running `Command { std: "docker" "start" "-a" "644e39b04bd64fdfef0f8dacf1bf4ef2ce1023e6c701380ef28c649e9bff2281", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Compiling memchr v2.6.2 [INFO] [stderr] Compiling allwords v0.1.2 [INFO] [stderr] Compiling weak-table v0.3.2 [INFO] [stderr] Compiling trees v0.4.2 [INFO] [stderr] Compiling nom v7.1.3 [INFO] [stderr] Compiling getrandom v0.2.8 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling scrabble v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/trie/node_trait.rs:223:64 [INFO] [stdout] | [INFO] [stdout] 223 | fn extract<'a>(&'a self, other: &'a Self) -> ExtractIterator<'_, Self> { [INFO] [stdout] | -- lifetime `'a` declared here ^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/letter/unparse.rs:28:16 [INFO] [stdout] | [INFO] [stdout] 28 | TooManyChars(usize), [INFO] [stdout] | ------------ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ErrorKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 28 | TooManyChars(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/letter/unparse.rs:29:15 [INFO] [stdout] | [INFO] [stdout] 29 | TooFewChars(usize), [INFO] [stdout] | ----------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ErrorKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 29 | TooFewChars(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/dawg/ptrs.rs:68:20 [INFO] [stdout] | [INFO] [stdout] 68 | self.0.as_ref().borrow() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Node` does not implement `Borrow`, so calling `borrow` on `&Node` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 68 - self.0.as_ref().borrow() [INFO] [stdout] 68 + self.0.as_ref() [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `Node`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 59 + #[derive(Clone)] [INFO] [stdout] 60 | pub struct Node { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/dawg/ptrs.rs:74:20 [INFO] [stdout] | [INFO] [stdout] 74 | self.0.as_ref().borrow() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Node` does not implement `Borrow`, so calling `borrow` on `&Node` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 74 - self.0.as_ref().borrow() [INFO] [stdout] 74 + self.0.as_ref() [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `Node`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 59 + #[derive(Clone)] [INFO] [stdout] 60 | pub struct Node { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.18s [INFO] running `Command { std: "docker" "inspect" "644e39b04bd64fdfef0f8dacf1bf4ef2ce1023e6c701380ef28c649e9bff2281", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "644e39b04bd64fdfef0f8dacf1bf4ef2ce1023e6c701380ef28c649e9bff2281", kill_on_drop: false }` [INFO] [stdout] 644e39b04bd64fdfef0f8dacf1bf4ef2ce1023e6c701380ef28c649e9bff2281 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a56d1dacc38ff3004fbb022a8e37bb4ffe01c2e446faaa4552feea8fcdc39073 [INFO] running `Command { std: "docker" "start" "-a" "a56d1dacc38ff3004fbb022a8e37bb4ffe01c2e446faaa4552feea8fcdc39073", kill_on_drop: false }` [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/trie/node_trait.rs:223:64 [INFO] [stdout] | [INFO] [stdout] 223 | fn extract<'a>(&'a self, other: &'a Self) -> ExtractIterator<'_, Self> { [INFO] [stdout] | -- lifetime `'a` declared here ^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/letter/unparse.rs:28:16 [INFO] [stdout] | [INFO] [stdout] 28 | TooManyChars(usize), [INFO] [stdout] | ------------ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ErrorKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 28 | TooManyChars(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling scrabble v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/letter/unparse.rs:29:15 [INFO] [stdout] | [INFO] [stdout] 29 | TooFewChars(usize), [INFO] [stdout] | ----------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ErrorKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 29 | TooFewChars(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/dawg/ptrs.rs:68:20 [INFO] [stdout] | [INFO] [stdout] 68 | self.0.as_ref().borrow() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Node` does not implement `Borrow`, so calling `borrow` on `&Node` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 68 - self.0.as_ref().borrow() [INFO] [stdout] 68 + self.0.as_ref() [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `Node`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 59 + #[derive(Clone)] [INFO] [stdout] 60 | pub struct Node { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/dawg/ptrs.rs:74:20 [INFO] [stdout] | [INFO] [stdout] 74 | self.0.as_ref().borrow() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Node` does not implement `Borrow`, so calling `borrow` on `&Node` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 74 - self.0.as_ref().borrow() [INFO] [stdout] 74 + self.0.as_ref() [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `Node`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 59 + #[derive(Clone)] [INFO] [stdout] 60 | pub struct Node { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/trie/node_trait.rs:223:64 [INFO] [stdout] | [INFO] [stdout] 223 | fn extract<'a>(&'a self, other: &'a Self) -> ExtractIterator<'_, Self> { [INFO] [stdout] | -- lifetime `'a` declared here ^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/letter/unparse.rs:28:16 [INFO] [stdout] | [INFO] [stdout] 28 | TooManyChars(usize), [INFO] [stdout] | ------------ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ErrorKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 28 | TooManyChars(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/letter/unparse.rs:29:15 [INFO] [stdout] | [INFO] [stdout] 29 | TooFewChars(usize), [INFO] [stdout] | ----------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `ErrorKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 29 | TooFewChars(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/dawg/ptrs.rs:68:20 [INFO] [stdout] | [INFO] [stdout] 68 | self.0.as_ref().borrow() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Node` does not implement `Borrow`, so calling `borrow` on `&Node` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 68 - self.0.as_ref().borrow() [INFO] [stdout] 68 + self.0.as_ref() [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `Node`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 59 + #[derive(Clone)] [INFO] [stdout] 60 | pub struct Node { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/dawg/ptrs.rs:74:20 [INFO] [stdout] | [INFO] [stdout] 74 | self.0.as_ref().borrow() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `Node` does not implement `Borrow`, so calling `borrow` on `&Node` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 74 - self.0.as_ref().borrow() [INFO] [stdout] 74 + self.0.as_ref() [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `Node`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 59 + #[derive(Clone)] [INFO] [stdout] 60 | pub struct Node { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s [INFO] running `Command { std: "docker" "inspect" "a56d1dacc38ff3004fbb022a8e37bb4ffe01c2e446faaa4552feea8fcdc39073", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a56d1dacc38ff3004fbb022a8e37bb4ffe01c2e446faaa4552feea8fcdc39073", kill_on_drop: false }` [INFO] [stdout] a56d1dacc38ff3004fbb022a8e37bb4ffe01c2e446faaa4552feea8fcdc39073