[INFO] cloning repository https://github.com/jcaromiq/codewars-katas-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jcaromiq/codewars-katas-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcaromiq%2Fcodewars-katas-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcaromiq%2Fcodewars-katas-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8ad18b1aaf7bcfc139be4c853f2964762b490fd
[INFO] checking jcaromiq/codewars-katas-rust against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcaromiq%2Fcodewars-katas-rust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcaromiq/codewars-katas-rust on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jcaromiq/codewars-katas-rust
[INFO] finished tweaking git repo https://github.com/jcaromiq/codewars-katas-rust
[INFO] tweaked toml for git repo https://github.com/jcaromiq/codewars-katas-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jcaromiq/codewars-katas-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd89905bd68200b87b1d9dc6a94473691c91bb8689165b48a9a9447e2ca67718
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dd89905bd68200b87b1d9dc6a94473691c91bb8689165b48a9a9447e2ca67718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd89905bd68200b87b1d9dc6a94473691c91bb8689165b48a9a9447e2ca67718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd89905bd68200b87b1d9dc6a94473691c91bb8689165b48a9a9447e2ca67718", kill_on_drop: false }`
[INFO] [stdout] dd89905bd68200b87b1d9dc6a94473691c91bb8689165b48a9a9447e2ca67718
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 957a1613a3f6ce72456c4f4784b6dcb43573a19dfd9e4263f4184d01db1fb723
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "957a1613a3f6ce72456c4f4784b6dcb43573a19dfd9e4263f4184d01db1fb723", kill_on_drop: false }`
[INFO] [stderr]     Checking codewars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/mexican_wave.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |             .map(|(i, c)| {
[INFO] [stdout]   |                   ^^^^^-
[INFO] [stdout]   |                   |    |
[INFO] [stdout]   |                   |    expected due to this
[INFO] [stdout]   |                   expected `char`, found tuple
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected type `char`
[INFO] [stdout]             found tuple `(_, _)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `codewars`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/mexican_wave.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |             .map(|(i, c)| {
[INFO] [stdout]   |                   ^^^^^-
[INFO] [stdout]   |                   |    |
[INFO] [stdout]   |                   |    expected due to this
[INFO] [stdout]   |                   expected `char`, found tuple
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected type `char`
[INFO] [stdout]             found tuple `(_, _)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "957a1613a3f6ce72456c4f4784b6dcb43573a19dfd9e4263f4184d01db1fb723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "957a1613a3f6ce72456c4f4784b6dcb43573a19dfd9e4263f4184d01db1fb723", kill_on_drop: false }`
[INFO] [stdout] 957a1613a3f6ce72456c4f4784b6dcb43573a19dfd9e4263f4184d01db1fb723