[INFO] updating cached repository andresoro/grep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andresoro/grep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andresoro/grep" "work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/andresoro/grep"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/andresoro/grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andresoro/grep" "work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/andresoro/grep"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/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#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of andresoro/grep on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-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-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/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-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/andresoro/grep/Cargo.toml
[INFO] crate andresoro/grep has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking andresoro/grep against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-1/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/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" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7aaf9afda2bff8b932b885f9f1732556d2c66afea678a53aa310f3d2b2bf00d7
[INFO] running `"docker" "start" "-a" "7aaf9afda2bff8b932b885f9f1732556d2c66afea678a53aa310f3d2b2bf00d7"`
[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] 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:22:58
[INFO] [stderr]    |
[INFO] [stderr] 22 |   pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |  __________________________________________________________^
[INFO] [stderr] 23 | |     
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^ expected enum `std::result::Result`, found ()
[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] error[E0308]: mismatched types
[INFO] [stderr]   --> src/lib.rs:22:58
[INFO] [stderr]    |
[INFO] [stderr] 22 |   pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |  __________________________________________________________^
[INFO] [stderr] 23 | |     
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^ expected enum `std::result::Result`, found ()
[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" "7aaf9afda2bff8b932b885f9f1732556d2c66afea678a53aa310f3d2b2bf00d7"`
[INFO] running `"docker" "rm" "-f" "7aaf9afda2bff8b932b885f9f1732556d2c66afea678a53aa310f3d2b2bf00d7"`
[INFO] [stdout] 7aaf9afda2bff8b932b885f9f1732556d2c66afea678a53aa310f3d2b2bf00d7