[INFO] updating cached repository theatlasroom/rust-learning
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/theatlasroom/rust-learning
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/theatlasroom/rust-learning" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/theatlasroom/rust-learning"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/theatlasroom/rust-learning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/theatlasroom/rust-learning" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/theatlasroom/rust-learning"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/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#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of theatlasroom/rust-learning on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-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-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/theatlasroom/rust-learning/Cargo.toml
[INFO] crate theatlasroom/rust-learning already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking theatlasroom/rust-learning against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/theatlasroom/rust-learning:/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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 55b3839aefdbcb39479681220782ecc106d99747ccaf491facd224c9febe7e01
[INFO] running `"docker" "start" "-a" "55b3839aefdbcb39479681220782ecc106d99747ccaf491facd224c9febe7e01"`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `dice_roll` is never read
[INFO] [stderr]   --> src/bin/dice_roll.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut dice_roll = 0;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[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] 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] 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" "55b3839aefdbcb39479681220782ecc106d99747ccaf491facd224c9febe7e01"`
[INFO] running `"docker" "rm" "-f" "55b3839aefdbcb39479681220782ecc106d99747ccaf491facd224c9febe7e01"`
[INFO] [stdout] 55b3839aefdbcb39479681220782ecc106d99747ccaf491facd224c9febe7e01