[INFO] cloning repository https://github.com/pythoninthegrasses/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pythoninthegrasses/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpythoninthegrasses%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpythoninthegrasses%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce736420876953ae45f7bed13b83fdbec3208543
[INFO] checking pythoninthegrasses/rustlings against master#1fe72d35998dea48aeecaf7fc07783b0b553f24f for pr-154992-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpythoninthegrasses%2Frustlings" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pythoninthegrasses/rustlings
[INFO] finished tweaking git repo https://github.com/pythoninthegrasses/rustlings
[INFO] tweaked toml for git repo https://github.com/pythoninthegrasses/rustlings written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pythoninthegrasses/rustlings on toolchain 1fe72d35998dea48aeecaf7fc07783b0b553f24f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pythoninthegrasses/rustlings 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" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6871ec39d69bb174533abcdb186be33751a503dfd34c21caed92fdbc0aabc79
[INFO] running `Command { std: "docker" "start" "-a" "e6871ec39d69bb174533abcdb186be33751a503dfd34c21caed92fdbc0aabc79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6871ec39d69bb174533abcdb186be33751a503dfd34c21caed92fdbc0aabc79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6871ec39d69bb174533abcdb186be33751a503dfd34c21caed92fdbc0aabc79", kill_on_drop: false }`
[INFO] [stdout] e6871ec39d69bb174533abcdb186be33751a503dfd34c21caed92fdbc0aabc79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b52195ad6a603c0ea8976cb748661b19531bd5c684dc781f6c2ff561774dd7c
[INFO] running `Command { std: "docker" "start" "-a" "7b52195ad6a603c0ea8976cb748661b19531bd5c684dc781f6c2ff561774dd7c", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]  --> exercises/22_clippy/clippy2.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |     for x in option {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     for x in option {
[INFO] [stdout] 5 +     while let Some(x) = option {
[INFO] [stdout]   |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]   |
[INFO] [stdout] 5 -     for x in option {
[INFO] [stdout] 5 +     if let Some(x) = option {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> exercises/16_lifetimes/lifetimes1.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn longest(x: &str, y: &str) -> &str {
[INFO] [stdout]   |               ----     ----     ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout]   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `x` or `y`
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |           ++++     ++          ++          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0369]: cannot multiply `Result<i32, ParseIntError>` by `{integer}`
[INFO] [stdout]   --> exercises/13_error_handling/errors2.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Ok(qty * cost_per_item + processing_fee)
[INFO] [stdout]    |        --- ^ ------------- {integer}
[INFO] [stdout]    |        |
[INFO] [stdout]    |        Result<i32, ParseIntError>
[INFO] [stdout]    |
[INFO] [stdout] note: `Result<i32, ParseIntError>` does not implement `Mul<{integer}>`
[INFO] [stdout]   --> /rustc/1fe72d35998dea48aeecaf7fc07783b0b553f24f/library/core/src/result.rs:557:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Result<i32, ParseIntError>` is defined in another crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0369`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "errors2" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `your_character` in this scope
[INFO] [stdout]   --> exercises/04_primitive_types/primitive_types2.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     if your_character.is_alphabetic() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "lifetimes1") due to 1 previous error
[INFO] [stdout] error[E0425]: cannot find value `your_character` in this scope
[INFO] [stdout]   --> exercises/04_primitive_types/primitive_types2.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     } else if your_character.is_numeric() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "primitive_types2") due to 2 previous errors
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/23_conversions/from_str.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn from_str(s: &str) -> Result<Self, Self::Err> {}
[INFO] [stdout]    |        --------             ^^^^^^^^^^^^^^^^^^^^^^^ expected `Result<Person, ParsePersonError>`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<Person, ParsePersonError>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "from_str" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7b52195ad6a603c0ea8976cb748661b19531bd5c684dc781f6c2ff561774dd7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b52195ad6a603c0ea8976cb748661b19531bd5c684dc781f6c2ff561774dd7c", kill_on_drop: false }`
[INFO] [stdout] 7b52195ad6a603c0ea8976cb748661b19531bd5c684dc781f6c2ff561774dd7c
