[INFO] cloning repository https://github.com/SimonImbrogno/words [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SimonImbrogno/words" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonImbrogno%2Fwords", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonImbrogno%2Fwords'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c42ab25aa3857d29356a6dbd51b6ce5de12f8129 [INFO] testing SimonImbrogno/words against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonImbrogno%2Fwords" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/SimonImbrogno/words on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/SimonImbrogno/words [INFO] finished tweaking git repo https://github.com/SimonImbrogno/words [INFO] tweaked toml for git repo https://github.com/SimonImbrogno/words written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/SimonImbrogno/words already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", 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] 86aa157577f0a20f16b922076177765a8e55f8775ca49b9e473aa6c578d32961 [INFO] running `Command { std: "docker" "start" "-a" "86aa157577f0a20f16b922076177765a8e55f8775ca49b9e473aa6c578d32961", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "86aa157577f0a20f16b922076177765a8e55f8775ca49b9e473aa6c578d32961", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "86aa157577f0a20f16b922076177765a8e55f8775ca49b9e473aa6c578d32961", kill_on_drop: false }` [INFO] [stdout] 86aa157577f0a20f16b922076177765a8e55f8775ca49b9e473aa6c578d32961 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9b1f77880adf665e7164c9448fd81b5bf406866a3d74d7cc3dc2021bcee0d288 [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" "9b1f77880adf665e7164c9448fd81b5bf406866a3d74d7cc3dc2021bcee0d288", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.51 [INFO] [stderr] Compiling lazy_static v1.3.0 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling regex-syntax v0.6.6 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling aho-corasick v0.7.3 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling words v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/trie.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | 97...122 => (as_int - 97) as usize, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/trie.rs:87:11 [INFO] [stdout] | [INFO] [stdout] 87 | 65...90 => (as_int + 32) as char, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/trie.rs:88:11 [INFO] [stdout] | [INFO] [stdout] 88 | 97...122 => as_int as char, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/markov.rs:27:7 [INFO] [stdout] | [INFO] [stdout] 27 | 97...122 => Ok(as_int - 96), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/markov.rs:38:6 [INFO] [stdout] | [INFO] [stdout] 38 | 1...26 => Ok((indx + 96) as u8 as char), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | fn main() -> Result<(), Box> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 23 - fn main() -> Result<(), Box> [INFO] [stdout] 23 + fn main() -> Result<(), Box> [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:61:7 [INFO] [stdout] | [INFO] [stdout] 61 | for i in 0..1000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:59:37 [INFO] [stdout] | [INFO] [stdout] 59 | for word in trie.get_contents() { mt.record(&word); } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 19.22s [INFO] running `Command { std: "docker" "inspect" "9b1f77880adf665e7164c9448fd81b5bf406866a3d74d7cc3dc2021bcee0d288", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b1f77880adf665e7164c9448fd81b5bf406866a3d74d7cc3dc2021bcee0d288", kill_on_drop: false }` [INFO] [stdout] 9b1f77880adf665e7164c9448fd81b5bf406866a3d74d7cc3dc2021bcee0d288 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--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] f1e3e0674188849250462547e72c1806f92465d3296327335726704efc1981b4 [INFO] running `Command { std: "docker" "start" "-a" "f1e3e0674188849250462547e72c1806f92465d3296327335726704efc1981b4", kill_on_drop: false }` [INFO] [stderr] Compiling words v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/trie.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | 97...122 => (as_int - 97) as usize, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/trie.rs:87:11 [INFO] [stdout] | [INFO] [stdout] 87 | 65...90 => (as_int + 32) as char, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/trie.rs:88:11 [INFO] [stdout] | [INFO] [stdout] 88 | 97...122 => as_int as char, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/markov.rs:27:7 [INFO] [stdout] | [INFO] [stdout] 27 | 97...122 => Ok(as_int - 96), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/markov.rs:38:6 [INFO] [stdout] | [INFO] [stdout] 38 | 1...26 => Ok((indx + 96) as u8 as char), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | fn main() -> Result<(), Box> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 23 - fn main() -> Result<(), Box> [INFO] [stdout] 23 + fn main() -> Result<(), Box> [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:61:7 [INFO] [stdout] | [INFO] [stdout] 61 | for i in 0..1000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:59:37 [INFO] [stdout] | [INFO] [stdout] 59 | for word in trie.get_contents() { mt.record(&word); } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.17s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/words-661192c980bf983c) [INFO] running `Command { std: "docker" "inspect" "f1e3e0674188849250462547e72c1806f92465d3296327335726704efc1981b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f1e3e0674188849250462547e72c1806f92465d3296327335726704efc1981b4", kill_on_drop: false }` [INFO] [stdout] f1e3e0674188849250462547e72c1806f92465d3296327335726704efc1981b4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] e618af00124421054448bfc068015383ae6689ab2368bdc70d37a0a9b467b84a [INFO] running `Command { std: "docker" "start" "-a" "e618af00124421054448bfc068015383ae6689ab2368bdc70d37a0a9b467b84a", kill_on_drop: false }` [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/trie.rs:64:9 [INFO] [stderr] | [INFO] [stderr] 64 | 97...122 => (as_int - 97) as usize, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/trie.rs:87:11 [INFO] [stderr] | [INFO] [stderr] 87 | 65...90 => (as_int + 32) as char, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/trie.rs:88:11 [INFO] [stderr] | [INFO] [stderr] 88 | 97...122 => as_int as char, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/markov.rs:27:7 [INFO] [stderr] | [INFO] [stderr] 27 | 97...122 => Ok(as_int - 96), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/markov.rs:38:6 [INFO] [stderr] | [INFO] [stderr] 38 | 1...26 => Ok((indx + 96) as u8 as char), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:23:29 [INFO] [stderr] | [INFO] [stderr] 23 | fn main() -> Result<(), Box> [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 23 - fn main() -> Result<(), Box> [INFO] [stderr] 23 + fn main() -> Result<(), Box> [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:61:7 [INFO] [stderr] | [INFO] [stderr] 61 | for i in 0..1000 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:59:37 [INFO] [stderr] | [INFO] [stderr] 59 | for word in trie.get_contents() { mt.record(&word); } [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] [stdout] [INFO] [stderr] [INFO] [stdout] running 0 tests [INFO] [stderr] warning: `words` (bin "words" test) generated 8 warnings [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/words-661192c980bf983c) [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" "e618af00124421054448bfc068015383ae6689ab2368bdc70d37a0a9b467b84a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e618af00124421054448bfc068015383ae6689ab2368bdc70d37a0a9b467b84a", kill_on_drop: false }` [INFO] [stdout] e618af00124421054448bfc068015383ae6689ab2368bdc70d37a0a9b467b84a