Dec 13 11:09:49.441 INFO testing mbbxAdam/minigrep against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 11:09:49.441 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 11:09:49.987 INFO [stdout] 581644f0b092466a6bd726ca07bda2e09cbde68a9a5b9b163ceb814933eaa090
Dec 13 11:09:49.989 INFO running `"docker" "start" "-a" "581644f0b092466a6bd726ca07bda2e09cbde68a9a5b9b163ceb814933eaa090"`
Dec 13 11:09:51.706 INFO [stderr] usermod: no changes
Dec 13 11:09:51.759 INFO [stderr]    Compiling minigrep v0.1.0 (/source)
Dec 13 11:09:52.201 INFO [stderr] error[E0308]: mismatched types
Dec 13 11:09:52.201 INFO [stderr]   --> src/main.rs:20:54
Dec 13 11:09:52.201 INFO [stderr]    |
Dec 13 11:09:52.201 INFO [stderr] 20 |   fn run(config: Config) -> Result<(), Box<dyn Error>> {
Dec 13 11:09:52.201 INFO [stderr]    |  ______________________________________________________^
Dec 13 11:09:52.201 INFO [stderr] 21 | |     let contents = fs::read_to_string(config.filename)
Dec 13 11:09:52.201 INFO [stderr] 22 | |         .expect("Something went wrong reading the file");
Dec 13 11:09:52.201 INFO [stderr] 23 | |
Dec 13 11:09:52.201 INFO [stderr] 24 | |     println!("With text:\n{}", contents);
Dec 13 11:09:52.201 INFO [stderr] 25 | | }
Dec 13 11:09:52.201 INFO [stderr]    | |_^ expected enum `std::result::Result`, found ()
Dec 13 11:09:52.201 INFO [stderr]    |
Dec 13 11:09:52.201 INFO [stderr]    = note: expected type `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>`
Dec 13 11:09:52.201 INFO [stderr]               found type `()`
Dec 13 11:09:52.201 INFO [stderr] 
Dec 13 11:09:52.210 INFO [stderr] error: aborting due to previous error
Dec 13 11:09:52.210 INFO [stderr] 
Dec 13 11:09:52.215 INFO [stderr] For more information about this error, try `rustc --explain E0308`.
Dec 13 11:09:52.222 INFO [stderr] error: Could not compile `minigrep`.
Dec 13 11:09:52.222 INFO [stderr] 
Dec 13 11:09:52.222 INFO [stderr] To learn more, run the command again with --verbose.
Dec 13 11:09:52.223 INFO [stderr] su: No module specific data is present
Dec 13 11:09:53.219 INFO running `"docker" "inspect" "581644f0b092466a6bd726ca07bda2e09cbde68a9a5b9b163ceb814933eaa090"`
Dec 13 11:09:53.597 INFO running `"docker" "rm" "-f" "581644f0b092466a6bd726ca07bda2e09cbde68a9a5b9b163ceb814933eaa090"`
Dec 13 11:09:53.988 INFO [stdout] 581644f0b092466a6bd726ca07bda2e09cbde68a9a5b9b163ceb814933eaa090