[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] building Markkaz/rust-katas 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%2FMarkkaz%2Frust-katas" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Markkaz/rust-katas 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/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-0-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5a7118c89f6349093d9683a4bc7dec9514b0a14db36d45c6a432568db8a2f334
[INFO] running `Command { std: "docker" "start" "-a" "5a7118c89f6349093d9683a4bc7dec9514b0a14db36d45c6a432568db8a2f334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a7118c89f6349093d9683a4bc7dec9514b0a14db36d45c6a432568db8a2f334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a7118c89f6349093d9683a4bc7dec9514b0a14db36d45c6a432568db8a2f334", kill_on_drop: false }`
[INFO] [stdout] 5a7118c89f6349093d9683a4bc7dec9514b0a14db36d45c6a432568db8a2f334
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 55521ba73aa16c56e9305de9580a2f153c5be2084d85bc5a03aad51984ffe503
[INFO] running `Command { std: "docker" "start" "-a" "55521ba73aa16c56e9305de9580a2f153c5be2084d85bc5a03aad51984ffe503", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling 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<u32> {
[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<String>) -> 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<String>) -> 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<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.22s
[INFO] running `Command { std: "docker" "inspect" "55521ba73aa16c56e9305de9580a2f153c5be2084d85bc5a03aad51984ffe503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55521ba73aa16c56e9305de9580a2f153c5be2084d85bc5a03aad51984ffe503", kill_on_drop: false }`
[INFO] [stdout] 55521ba73aa16c56e9305de9580a2f153c5be2084d85bc5a03aad51984ffe503
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8919cda5db6f0c2d5185d79957d779c0f986576ff934b44cdd29bd7d327060cb
[INFO] running `Command { std: "docker" "start" "-a" "8919cda5db6f0c2d5185d79957d779c0f986576ff934b44cdd29bd7d327060cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling katas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "8919cda5db6f0c2d5185d79957d779c0f986576ff934b44cdd29bd7d327060cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8919cda5db6f0c2d5185d79957d779c0f986576ff934b44cdd29bd7d327060cb", kill_on_drop: false }`
[INFO] [stdout] 8919cda5db6f0c2d5185d79957d779c0f986576ff934b44cdd29bd7d327060cb