[INFO] cloning repository https://github.com/mbbxAdam/minigrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mbbxAdam/minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbbxAdam%2Fminigrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbbxAdam%2Fminigrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c16d0309e9cc9e1b302d5f3c6e8f4bd00321fcf1
[INFO] checking mbbxAdam/minigrep against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbbxAdam%2Fminigrep" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mbbxAdam/minigrep on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mbbxAdam/minigrep
[INFO] finished tweaking git repo https://github.com/mbbxAdam/minigrep
[INFO] tweaked toml for git repo https://github.com/mbbxAdam/minigrep written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/mbbxAdam/minigrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9ff72cbbfb0ee3df1a452373f59c8adb94e4d09aa8c84741ac633d012062b18
[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" "c9ff72cbbfb0ee3df1a452373f59c8adb94e4d09aa8c84741ac633d012062b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ff72cbbfb0ee3df1a452373f59c8adb94e4d09aa8c84741ac633d012062b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ff72cbbfb0ee3df1a452373f59c8adb94e4d09aa8c84741ac633d012062b18", kill_on_drop: false }`
[INFO] [stdout] c9ff72cbbfb0ee3df1a452373f59c8adb94e4d09aa8c84741ac633d012062b18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd15cefceb7883f0b99ed9243763163bb69a02f0cdf5c282e9f2cc3643539b3d
[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" "fd15cefceb7883f0b99ed9243763163bb69a02f0cdf5c282e9f2cc3643539b3d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:20:27
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ---                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `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<(), Box<(dyn std::error::Error + 'static)>>`
[INFO] [stdout]            found unit type `()`
[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] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:20:27
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ---                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `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<(), Box<(dyn std::error::Error + 'static)>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minigrep`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fd15cefceb7883f0b99ed9243763163bb69a02f0cdf5c282e9f2cc3643539b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd15cefceb7883f0b99ed9243763163bb69a02f0cdf5c282e9f2cc3643539b3d", kill_on_drop: false }`
[INFO] [stdout] fd15cefceb7883f0b99ed9243763163bb69a02f0cdf5c282e9f2cc3643539b3d