[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#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatlasroom%2Frust-learning" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theatlasroom/rust-learning on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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-14/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] db0e28625be97bc324a9d8b30363040e0a4fc3e71d89d6ba0f9c8f8fbfc413b5
[INFO] running `"docker" "start" "-a" "db0e28625be97bc324a9d8b30363040e0a4fc3e71d89d6ba0f9c8f8fbfc413b5"`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 |     println!('\u{0024}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 3 |     println!("{}", '\u{0024}');
[INFO] [stderr]   |              ^^^^^
[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: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     println!('\u{00A5}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 4 |     println!("{}", '\u{00A5}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 |     println!('\u{26A1}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 5 |     println!("{}", '\u{26A1}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     println!('\u{2600}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 6 |     println!("{}", '\u{2600}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |     println!('\u{99}');
[INFO] [stderr]   |              ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 7 |     println!("{}", '\u{99}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 |     println!('\u{0024}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 3 |     println!("{}", '\u{0024}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     println!('\u{00A5}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 4 |     println!("{}", '\u{00A5}');
[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] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 |     println!('\u{26A1}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 5 |     println!("{}", '\u{26A1}');
[INFO] [stderr]   |              ^^^^^
[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: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     println!('\u{2600}');
[INFO] [stderr]   |              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 6 |     println!("{}", '\u{2600}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]  --> src/bin/primitives.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |     println!('\u{99}');
[INFO] [stderr]   |              ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]   |
[INFO] [stderr] 7 |     println!("{}", '\u{99}');
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: aborting due to 5 previous errors
[INFO] [stderr] 
[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] error: build failed
[INFO] running `"docker" "inspect" "db0e28625be97bc324a9d8b30363040e0a4fc3e71d89d6ba0f9c8f8fbfc413b5"`
[INFO] running `"docker" "rm" "-f" "db0e28625be97bc324a9d8b30363040e0a4fc3e71d89d6ba0f9c8f8fbfc413b5"`
[INFO] [stdout] db0e28625be97bc324a9d8b30363040e0a4fc3e71d89d6ba0f9c8f8fbfc413b5