[INFO] cloning repository https://github.com/Markkaz/rust-katas [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Markkaz/rust-katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarkkaz%2Frust-katas", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarkkaz%2Frust-katas'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a220eee418ba9e0b12a026aff2e8fc227b408599 [INFO] checking Markkaz/rust-katas against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarkkaz%2Frust-katas" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Markkaz/rust-katas on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Markkaz/rust-katas [INFO] finished tweaking git repo https://github.com/Markkaz/rust-katas [INFO] tweaked toml for git repo https://github.com/Markkaz/rust-katas written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Markkaz/rust-katas 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 61a6ea12c50205d1ce73fb2ad611dbe7b7f9b3bbe0c328fa0da6547f365476eb [INFO] running `Command { std: "docker" "start" "-a" "61a6ea12c50205d1ce73fb2ad611dbe7b7f9b3bbe0c328fa0da6547f365476eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "61a6ea12c50205d1ce73fb2ad611dbe7b7f9b3bbe0c328fa0da6547f365476eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61a6ea12c50205d1ce73fb2ad611dbe7b7f9b3bbe0c328fa0da6547f365476eb", kill_on_drop: false }` [INFO] [stdout] 61a6ea12c50205d1ce73fb2ad611dbe7b7f9b3bbe0c328fa0da6547f365476eb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dd58efffa450ac85f4ff79dd9223092ea10b11d90e5b37ee7fd63cd8b590ce98 [INFO] running `Command { std: "docker" "start" "-a" "dd58efffa450ac85f4ff79dd9223092ea10b11d90e5b37ee7fd63cd8b590ce98", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking katas v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `fizzbuzz` is never used [INFO] [stdout] --> src/fizzbuzz.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn fizzbuzz(n: u8) -> String { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Greeter` is never constructed [INFO] [stdout] --> src/greeter.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Greeter { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `TimeOfDay` is never used [INFO] [stdout] --> src/greeter.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 7 | enum TimeOfDay { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated functions `new`, `is_night`, `is_evening`, and `is_afternoon` are never used [INFO] [stdout] --> src/greeter.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 14 | impl TimeOfDay { [INFO] [stdout] | -------------- associated functions in this implementation [INFO] [stdout] 15 | fn new(time: NaiveTime) -> TimeOfDay { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 27 | fn is_night(time: NaiveTime) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn is_evening(time: NaiveTime) -> bool { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 35 | fn is_afternoon(time: NaiveTime) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `greet` are never used [INFO] [stdout] --> src/greeter.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 40 | impl Greeter { [INFO] [stdout] | ------------ associated items in this implementation [INFO] [stdout] 41 | fn new(time: NaiveTime) -> Greeter { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | fn greet(&self, name: &str) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `capitalize` is never used [INFO] [stdout] --> src/greeter.rs:59:4 [INFO] [stdout] | [INFO] [stdout] 59 | fn capitalize(string: String) -> String { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `prime_factors` is never used [INFO] [stdout] --> src/prime_numbers.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn prime_factors(n: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add` is never used [INFO] [stdout] --> src/string_calculator.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn add(string: &str) -> i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `has_custom_delimiter` is never used [INFO] [stdout] --> src/string_calculator.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn has_custom_delimiter(string: &str) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `convert_delimiters_to_regex` is never used [INFO] [stdout] --> src/string_calculator.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn convert_delimiters_to_regex(delimiters: Vec) -> Regex { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add_with_delimiter` is never used [INFO] [stdout] --> src/string_calculator.rs:29:4 [INFO] [stdout] | [INFO] [stdout] 29 | fn add_with_delimiter(string: &str, delimiters: Vec) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add_with_custom_delimiter` is never used [INFO] [stdout] --> src/string_calculator.rs:51:4 [INFO] [stdout] | [INFO] [stdout] 51 | fn add_with_custom_delimiter(string: &str) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `extract_custom_delimiters` is never used [INFO] [stdout] --> src/string_calculator.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn extract_custom_delimiters(delimiter: &str) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.46s [INFO] running `Command { std: "docker" "inspect" "dd58efffa450ac85f4ff79dd9223092ea10b11d90e5b37ee7fd63cd8b590ce98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd58efffa450ac85f4ff79dd9223092ea10b11d90e5b37ee7fd63cd8b590ce98", kill_on_drop: false }` [INFO] [stdout] dd58efffa450ac85f4ff79dd9223092ea10b11d90e5b37ee7fd63cd8b590ce98 [INFO] checking Markkaz/rust-katas against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarkkaz%2Frust-katas" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Markkaz/rust-katas on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Markkaz/rust-katas [INFO] finished tweaking git repo https://github.com/Markkaz/rust-katas [INFO] tweaked toml for git repo https://github.com/Markkaz/rust-katas written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Markkaz/rust-katas 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9387a6c27e9391a5f10ca8efa5dfae632e923d10ba448084b146fbef79ea5bbc [INFO] running `Command { std: "docker" "start" "-a" "9387a6c27e9391a5f10ca8efa5dfae632e923d10ba448084b146fbef79ea5bbc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9387a6c27e9391a5f10ca8efa5dfae632e923d10ba448084b146fbef79ea5bbc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9387a6c27e9391a5f10ca8efa5dfae632e923d10ba448084b146fbef79ea5bbc", kill_on_drop: false }` [INFO] [stdout] 9387a6c27e9391a5f10ca8efa5dfae632e923d10ba448084b146fbef79ea5bbc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2a26d83549efcd84dd78b9f11063b652bca5616cbb1d77c169828e4d1438336a [INFO] running `Command { std: "docker" "start" "-a" "2a26d83549efcd84dd78b9f11063b652bca5616cbb1d77c169828e4d1438336a", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chrono-0.4.19/src/format/parse.rs:491:21 [INFO] [stdout] | [INFO] [stdout] 491 | Err(INVALID)?; [INFO] [stdout] | ^^^ cannot infer type of the type parameter `T` declared on the enum `Result` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic arguments [INFO] [stdout] | [INFO] [stdout] 491 | Err::(INVALID)?; [INFO] [stdout] | +++++++++++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking regex v1.5.4 [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `chrono` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.5.4/src/exec.rs:848:13 [INFO] [stdout] | [INFO] [stdout] 848 | / match dfa::Fsm::reverse( [INFO] [stdout] 849 | | &self.ro.dfa_reverse, [INFO] [stdout] 850 | | self.cache.value(), [INFO] [stdout] 851 | | false, [INFO] [stdout] ... | [INFO] [stdout] 862 | | Quit => return Some(Quit), [INFO] [stdout] 863 | | }; [INFO] [stdout] | |_____________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "2a26d83549efcd84dd78b9f11063b652bca5616cbb1d77c169828e4d1438336a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2a26d83549efcd84dd78b9f11063b652bca5616cbb1d77c169828e4d1438336a", kill_on_drop: false }` [INFO] [stdout] 2a26d83549efcd84dd78b9f11063b652bca5616cbb1d77c169828e4d1438336a