[INFO] cloning repository https://github.com/sitek94/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sitek94/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsitek94%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsitek94%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6dcf2fed4c1df52e65fab7320b30b1dd2df2ea7d [INFO] checking sitek94/rustlings against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsitek94%2Frustlings" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/sitek94/rustlings [INFO] finished tweaking git repo https://github.com/sitek94/rustlings [INFO] tweaked toml for git repo https://github.com/sitek94/rustlings written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/sitek94/rustlings on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c32a70af5928cea0a4e05e983fdcae72ee520a63e202f91499a9a8474c5e8bc3 [INFO] running `Command { std: "docker" "start" "-a" "c32a70af5928cea0a4e05e983fdcae72ee520a63e202f91499a9a8474c5e8bc3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c32a70af5928cea0a4e05e983fdcae72ee520a63e202f91499a9a8474c5e8bc3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c32a70af5928cea0a4e05e983fdcae72ee520a63e202f91499a9a8474c5e8bc3", kill_on_drop: false }` [INFO] [stdout] c32a70af5928cea0a4e05e983fdcae72ee520a63e202f91499a9a8474c5e8bc3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 33d0b4f0b99729c200d95309673dfe28bb5c8b639f9cd8eeb39491bffbfe4c3e [INFO] running `Command { std: "docker" "start" "-a" "33d0b4f0b99729c200d95309673dfe28bb5c8b639f9cd8eeb39491bffbfe4c3e", kill_on_drop: false }` [INFO] [stderr] Checking exercises v0.0.0 (/opt/rustwide/workdir) [INFO] [stdout] error: couldn't read `experiments/exp4.rs`: No such file or directory (os error 2) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `exercises` (bin "exp4") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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 {} [INFO] [stdout] | -------- ^^^^^^^^^^^^^^^^^^^^^^^ expected `Result`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Result` [INFO] [stdout] found unit type `()` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> exercises/23_conversions/from_into.rs:37:25 [INFO] [stdout] | [INFO] [stdout] 37 | fn from(s: &str) -> Self {} [INFO] [stdout] | ---- ^^^^ expected `Person`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [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_into") due to 1 previous error [INFO] [stderr] error: could not compile `exercises` (bin "from_str") due to 1 previous error [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] running `Command { std: "docker" "inspect" "33d0b4f0b99729c200d95309673dfe28bb5c8b639f9cd8eeb39491bffbfe4c3e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "33d0b4f0b99729c200d95309673dfe28bb5c8b639f9cd8eeb39491bffbfe4c3e", kill_on_drop: false }` [INFO] [stdout] 33d0b4f0b99729c200d95309673dfe28bb5c8b639f9cd8eeb39491bffbfe4c3e