[INFO] cloning repository andresoro/grep
[INFO] running `"git" "clone" "--bare" "git://github.com/andresoro/grep.git" "work/cache/sources/gh/andresoro/grep"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/andresoro/grep'...
[INFO] running `"git" "clone" "work/cache/sources/gh/andresoro/grep" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/andresoro/grep"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/andresoro/grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andresoro/grep" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/andresoro/grep"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/andresoro/grep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4f02df315ef8e31b7ab0ba196af2e541d13d342b
[INFO] sha for GitHub repo andresoro/grep: 4f02df315ef8e31b7ab0ba196af2e541d13d342b
[INFO] validating manifest of andresoro/grep on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of andresoro/grep on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing andresoro/grep
[INFO] finished frobbing andresoro/grep
[INFO] frobbed toml for andresoro/grep written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/andresoro/grep/Cargo.toml
[INFO] started frobbing andresoro/grep
[INFO] finished frobbing andresoro/grep
[INFO] frobbed toml for andresoro/grep written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/andresoro/grep/Cargo.toml
[INFO] crate andresoro/grep has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking andresoro/grep against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-4/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/andresoro/grep:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] df952e938ad82ef2915625b9880f4ba71f18450f49d401564c20fdfb4df49a45
[INFO] running `"docker" "start" "-a" "df952e938ad82ef2915625b9880f4ba71f18450f49d401564c20fdfb4df49a45"`
[INFO] [stderr]     Checking grep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/lib.rs:22:31
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |        ---                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found ()
[INFO] [stderr]    |        |
[INFO] [stderr]    |        this function's body doesn't return
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `grep`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/lib.rs:22:31
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |        ---                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found ()
[INFO] [stderr]    |        |
[INFO] [stderr]    |        this function's body doesn't return
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `grep`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "df952e938ad82ef2915625b9880f4ba71f18450f49d401564c20fdfb4df49a45"`
[INFO] running `"docker" "rm" "-f" "df952e938ad82ef2915625b9880f4ba71f18450f49d401564c20fdfb4df49a45"`
[INFO] [stdout] df952e938ad82ef2915625b9880f4ba71f18450f49d401564c20fdfb4df49a45