[INFO] cloning repository theatlasroom/rust-learning
[INFO] running `"git" "clone" "--bare" "git://github.com/theatlasroom/rust-learning.git" "work/cache/sources/gh/theatlasroom/rust-learning"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/theatlasroom/rust-learning'...
[INFO] running `"git" "clone" "work/cache/sources/gh/theatlasroom/rust-learning" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/theatlasroom/rust-learning"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/theatlasroom/rust-learning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/theatlasroom/rust-learning" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/theatlasroom/rust-learning"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/theatlasroom/rust-learning'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d4a390a3ace3085dbcc821e2fb7899f7a668a1c
[INFO] sha for GitHub repo theatlasroom/rust-learning: 7d4a390a3ace3085dbcc821e2fb7899f7a668a1c
[INFO] validating manifest of theatlasroom/rust-learning on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of theatlasroom/rust-learning on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing theatlasroom/rust-learning
[INFO] finished frobbing theatlasroom/rust-learning
[INFO] frobbed toml for theatlasroom/rust-learning written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/theatlasroom/rust-learning/Cargo.toml
[INFO] started frobbing theatlasroom/rust-learning
[INFO] finished frobbing theatlasroom/rust-learning
[INFO] frobbed toml for theatlasroom/rust-learning written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/theatlasroom/rust-learning/Cargo.toml
[INFO] crate theatlasroom/rust-learning already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking theatlasroom/rust-learning against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/theatlasroom/rust-learning:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a153cd9ec41174939f7aecbf294e96ec3d4bc8911e04758a032cc87197101a56
[INFO] running `"docker" "start" "-a" "a153cd9ec41174939f7aecbf294e96ec3d4bc8911e04758a032cc87197101a56"`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `text_in_file`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/bin/text_in_file.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0530]: match bindings cannot shadow tuple variants
[INFO] [stderr]   --> src/bin/file_io.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err => println!("Error\n{:?}", handle),
[INFO] [stderr]    |         ^^^ cannot be named the same as a tuple variant
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `handle` in this scope
[INFO] [stderr]   --> src/bin/file_io.rs:28:40
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err => println!("Error\n{:?}", handle),
[INFO] [stderr]    |                                        ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/file_io.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut handle = match fs::File::open(f){
[INFO] [stderr]    |                            ----------------- this match expression has type `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr] 27 |         Some(handle) => println!("File\n{:?}", handle),
[INFO] [stderr]    |         ^^^^^^^^^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr]               found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0530.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a153cd9ec41174939f7aecbf294e96ec3d4bc8911e04758a032cc87197101a56"`
[INFO] running `"docker" "rm" "-f" "a153cd9ec41174939f7aecbf294e96ec3d4bc8911e04758a032cc87197101a56"`
[INFO] [stdout] a153cd9ec41174939f7aecbf294e96ec3d4bc8911e04758a032cc87197101a56