[INFO] updating cached repository Noah2610/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Noah2610/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Noah2610/rust-playground" "work/ex/beta-1.38-1/sources/1.37.0/gh/Noah2610/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Noah2610/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Noah2610/rust-playground" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Noah2610/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Noah2610/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a98916f1c149fa8a42de220b7b7427b2550da1c2
[INFO] sha for GitHub repo Noah2610/rust-playground: a98916f1c149fa8a42de220b7b7427b2550da1c2
[INFO] validating manifest of Noah2610/rust-playground on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Noah2610/rust-playground on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Noah2610/rust-playground
[INFO] finished frobbing Noah2610/rust-playground
[INFO] frobbed toml for Noah2610/rust-playground written to work/ex/beta-1.38-1/sources/1.37.0/gh/Noah2610/rust-playground/Cargo.toml
[INFO] started frobbing Noah2610/rust-playground
[INFO] finished frobbing Noah2610/rust-playground
[INFO] frobbed toml for Noah2610/rust-playground written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Noah2610/rust-playground/Cargo.toml
[INFO] crate Noah2610/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Noah2610/rust-playground against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Noah2610/rust-playground:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 6c2db665062bb76c32f92fd86b57a033ebf5c268db0cf0631fa8b796093eade7
[INFO] running `"docker" "start" "-a" "6c2db665062bb76c32f92fd86b57a033ebf5c268db0cf0631fa8b796093eade7"`
[INFO] [stderr]    Compiling andrew-tut v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/food/mod.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |  /         match self.color {
[INFO] [stderr] 45 |  |             //! The `format!()` [macro] lets us create a `String` with a pattern,
[INFO] [stderr]    |  |_____________^
[INFO] [stderr] 46 | ||             //! equal to how the `println!()` macro does it.
[INFO] [stderr] 47 | ||             //! [macro]: https://doc.rust-lang.org/book/ch19-06-macros.html
[INFO] [stderr]    | ||___________________________________________________________________________^
[INFO] [stderr] 48 |  |             Some(color) => format!("This apple is {:?}", color),
[INFO] [stderr] 49 |  |             None        => String::from("This apple has no color :("),
[INFO] [stderr] 50 |  |         }
[INFO] [stderr]    |  |_________- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Green`
[INFO] [stderr]  --> src/food/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Green,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Blue`
[INFO] [stderr]  --> src/food/color.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Blue,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "6c2db665062bb76c32f92fd86b57a033ebf5c268db0cf0631fa8b796093eade7"`
[INFO] running `"docker" "rm" "-f" "6c2db665062bb76c32f92fd86b57a033ebf5c268db0cf0631fa8b796093eade7"`
[INFO] [stdout] 6c2db665062bb76c32f92fd86b57a033ebf5c268db0cf0631fa8b796093eade7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Noah2610/rust-playground:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9cdddd20ab386090d0a3c03f56eb29607400c16c197f7054149b9ad07572ea03
[INFO] running `"docker" "start" "-a" "9cdddd20ab386090d0a3c03f56eb29607400c16c197f7054149b9ad07572ea03"`
[INFO] [stderr]    Compiling andrew-tut v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/food/mod.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |  /         match self.color {
[INFO] [stderr] 45 |  |             //! The `format!()` [macro] lets us create a `String` with a pattern,
[INFO] [stderr]    |  |_____________^
[INFO] [stderr] 46 | ||             //! equal to how the `println!()` macro does it.
[INFO] [stderr] 47 | ||             //! [macro]: https://doc.rust-lang.org/book/ch19-06-macros.html
[INFO] [stderr]    | ||___________________________________________________________________________^
[INFO] [stderr] 48 |  |             Some(color) => format!("This apple is {:?}", color),
[INFO] [stderr] 49 |  |             None        => String::from("This apple has no color :("),
[INFO] [stderr] 50 |  |         }
[INFO] [stderr]    |  |_________- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Green`
[INFO] [stderr]  --> src/food/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Green,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Blue`
[INFO] [stderr]  --> src/food/color.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Blue,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "9cdddd20ab386090d0a3c03f56eb29607400c16c197f7054149b9ad07572ea03"`
[INFO] running `"docker" "rm" "-f" "9cdddd20ab386090d0a3c03f56eb29607400c16c197f7054149b9ad07572ea03"`
[INFO] [stdout] 9cdddd20ab386090d0a3c03f56eb29607400c16c197f7054149b9ad07572ea03
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Noah2610/rust-playground:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 941230dcd903174a4ad5eb11e554f89f8c2f5fbc9707d18e6ba177a31d03d3c8
[INFO] running `"docker" "start" "-a" "941230dcd903174a4ad5eb11e554f89f8c2f5fbc9707d18e6ba177a31d03d3c8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/andrew_tut-07cd294de6d1ef31
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "941230dcd903174a4ad5eb11e554f89f8c2f5fbc9707d18e6ba177a31d03d3c8"`
[INFO] running `"docker" "rm" "-f" "941230dcd903174a4ad5eb11e554f89f8c2f5fbc9707d18e6ba177a31d03d3c8"`
[INFO] [stdout] 941230dcd903174a4ad5eb11e554f89f8c2f5fbc9707d18e6ba177a31d03d3c8