[INFO] updating cached repository https://github.com/theatlasroom/rust-learning
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d4a390a3ace3085dbcc821e2fb7899f7a668a1c
[INFO] checking theatlasroom/rust-learning against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatlasroom%2Frust-learning" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theatlasroom/rust-learning on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/theatlasroom/rust-learning
[INFO] finished tweaking git repo https://github.com/theatlasroom/rust-learning
[INFO] tweaked toml for git repo https://github.com/theatlasroom/rust-learning written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/theatlasroom/rust-learning already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 95c65e2c4843ea5b04318feb8ed3b54f7ea7b040dc97df4d0f405027b29e5174
[INFO] running `"docker" "start" "-a" "95c65e2c4843ea5b04318feb8ed3b54f7ea7b040dc97df4d0f405027b29e5174"`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `divide`
[INFO] [stderr]   --> src/bin/matrix_math.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn divide(&self, scalar: f64) -> Matrix2d {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `multiply`
[INFO] [stderr]   --> src/bin/matrix_math.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn multiply(&self, scalar: f64) -> Matrix2d {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scalar_multiply`
[INFO] [stderr]   --> src/bin/matrix_math.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn scalar_multiply(&self) -> f64 { unimplemented!() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `determinant`
[INFO] [stderr]   --> src/bin/matrix_math.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn determinant(&self) -> f64 { unimplemented!() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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 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 enum `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr]               found enum `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] 
[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[E0601]: `main` function not found in crate `text_in_input`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/bin/text_in_input.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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: method is never used: `divide`
[INFO] [stderr]   --> src/bin/matrix_math.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn divide(&self, scalar: f64) -> Matrix2d {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `multiply`
[INFO] [stderr]   --> src/bin/matrix_math.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn multiply(&self, scalar: f64) -> Matrix2d {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scalar_multiply`
[INFO] [stderr]   --> src/bin/matrix_math.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn scalar_multiply(&self) -> f64 { unimplemented!() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `determinant`
[INFO] [stderr]   --> src/bin/matrix_math.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn determinant(&self) -> f64 { unimplemented!() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "95c65e2c4843ea5b04318feb8ed3b54f7ea7b040dc97df4d0f405027b29e5174"`
[INFO] running `"docker" "rm" "-f" "95c65e2c4843ea5b04318feb8ed3b54f7ea7b040dc97df4d0f405027b29e5174"`
[INFO] [stdout] 95c65e2c4843ea5b04318feb8ed3b54f7ea7b040dc97df4d0f405027b29e5174
