[INFO] cloning repository https://github.com/altunh/rust-implementations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/altunh/rust-implementations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faltunh%2Frust-implementations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faltunh%2Frust-implementations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65b2c67e49ef35fed2961269e70d100bdf5c21b5
[INFO] checking altunh/rust-implementations/65b2c67e49ef35fed2961269e70d100bdf5c21b5 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faltunh%2Frust-implementations" "/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/altunh/rust-implementations on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/altunh/rust-implementations
[INFO] finished tweaking git repo https://github.com/altunh/rust-implementations
[INFO] tweaked toml for git repo https://github.com/altunh/rust-implementations written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/altunh/rust-implementations 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/Cargo.toml: unused manifest key: workspace.name
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d6ec7bb75e1b9d0a57718431f71ac32b51e3b803d57a1f5cfe764f03d93f360
[INFO] running `Command { std: "docker" "start" "-a" "4d6ec7bb75e1b9d0a57718431f71ac32b51e3b803d57a1f5cfe764f03d93f360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d6ec7bb75e1b9d0a57718431f71ac32b51e3b803d57a1f5cfe764f03d93f360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d6ec7bb75e1b9d0a57718431f71ac32b51e3b803d57a1f5cfe764f03d93f360", kill_on_drop: false }`
[INFO] [stdout] 4d6ec7bb75e1b9d0a57718431f71ac32b51e3b803d57a1f5cfe764f03d93f360
[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" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 842967216fd699987d4bb796e0f43a89ef7e96da3681555537972a82b31d08e7
[INFO] running `Command { std: "docker" "start" "-a" "842967216fd699987d4bb796e0f43a89ef7e96da3681555537972a82b31d08e7", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: workspace.name
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking structures v0.1.0 (/opt/rustwide/workdir/structures)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> structures/src/vector/vec.rs:302:27
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn into_iter(self) -> Self::IntoIter {
[INFO] [stdout]     |        ---------          ^^^^^^^^^^^^^^ expected `Iter<'_, T>`, found `()`
[INFO] [stdout]     |        |
[INFO] [stdout]     |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `std::slice::Iter<'a, T>`
[INFO] [stdout]             found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> structures/src/vector/vec.rs:302:27
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn into_iter(self) -> Self::IntoIter {
[INFO] [stdout]     |        ---------          ^^^^^^^^^^^^^^ expected `Iter<'_, T>`, found `()`
[INFO] [stdout]     |        |
[INFO] [stdout]     |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `std::slice::Iter<'a, T>`
[INFO] [stdout]             found unit 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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `structures` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `structures` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "842967216fd699987d4bb796e0f43a89ef7e96da3681555537972a82b31d08e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842967216fd699987d4bb796e0f43a89ef7e96da3681555537972a82b31d08e7", kill_on_drop: false }`
[INFO] [stdout] 842967216fd699987d4bb796e0f43a89ef7e96da3681555537972a82b31d08e7