[INFO] cloning repository https://github.com/y2kappa/functional-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/y2kappa/functional-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy2kappa%2Ffunctional-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy2kappa%2Ffunctional-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d89d9c40bf850fc2b94e09a1a7e3631a8ab21259
[INFO] checking y2kappa/functional-rust against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy2kappa%2Ffunctional-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/y2kappa/functional-rust on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/y2kappa/functional-rust
[INFO] finished tweaking git repo https://github.com/y2kappa/functional-rust
[INFO] tweaked toml for git repo https://github.com/y2kappa/functional-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/y2kappa/functional-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85e25ea4765c8e756fdc0a3ff44be9da0a38c3ef44f1d95d471a9d9df5a06e03
[INFO] running `Command { std: "docker" "start" "-a" "85e25ea4765c8e756fdc0a3ff44be9da0a38c3ef44f1d95d471a9d9df5a06e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85e25ea4765c8e756fdc0a3ff44be9da0a38c3ef44f1d95d471a9d9df5a06e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85e25ea4765c8e756fdc0a3ff44be9da0a38c3ef44f1d95d471a9d9df5a06e03", kill_on_drop: false }`
[INFO] [stdout] 85e25ea4765c8e756fdc0a3ff44be9da0a38c3ef44f1d95d471a9d9df5a06e03
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 074f2851a7248228efe1eb331d9d5d00326963068db49bb5b677758e7454c0d1
[INFO] running `Command { std: "docker" "start" "-a" "074f2851a7248228efe1eb331d9d5d00326963068db49bb5b677758e7454c0d1", kill_on_drop: false }`
[INFO] [stderr]     Checking functional v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected type, found `{`
[INFO] [stdout]   --> src/main.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn flatten<T>(v: &Vec<Vec<T>>) -> {
[INFO] [stdout]    |                                   ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `functional`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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: expected type, found `{`
[INFO] [stdout]   --> src/main.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn flatten<T>(v: &Vec<Vec<T>>) -> {
[INFO] [stdout]    |                                   ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "074f2851a7248228efe1eb331d9d5d00326963068db49bb5b677758e7454c0d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "074f2851a7248228efe1eb331d9d5d00326963068db49bb5b677758e7454c0d1", kill_on_drop: false }`
[INFO] [stdout] 074f2851a7248228efe1eb331d9d5d00326963068db49bb5b677758e7454c0d1