[INFO] updating cached repository marionebl/rust-by-example-exercises
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marionebl/rust-by-example-exercises
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marionebl/rust-by-example-exercises" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/marionebl/rust-by-example-exercises"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/marionebl/rust-by-example-exercises'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marionebl/rust-by-example-exercises" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/marionebl/rust-by-example-exercises"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/marionebl/rust-by-example-exercises'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b22ea9a4d0448f54fdbc20b0d014f13f44ae816e
[INFO] sha for GitHub repo marionebl/rust-by-example-exercises: b22ea9a4d0448f54fdbc20b0d014f13f44ae816e
[INFO] validating manifest of marionebl/rust-by-example-exercises on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of marionebl/rust-by-example-exercises on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing marionebl/rust-by-example-exercises
[INFO] finished frobbing marionebl/rust-by-example-exercises
[INFO] frobbed toml for marionebl/rust-by-example-exercises written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/marionebl/rust-by-example-exercises/Cargo.toml
[INFO] started frobbing marionebl/rust-by-example-exercises
[INFO] finished frobbing marionebl/rust-by-example-exercises
[INFO] frobbed toml for marionebl/rust-by-example-exercises written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/marionebl/rust-by-example-exercises/Cargo.toml
[INFO] crate marionebl/rust-by-example-exercises already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking marionebl/rust-by-example-exercises against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/marionebl/rust-by-example-exercises:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c5026080620727ffdffff863763ca88ddb154d2f74ffa3bb0edf39d16500a516
[INFO] running `"docker" "start" "-a" "c5026080620727ffdffff863763ca88ddb154d2f74ffa3bb0edf39d16500a516"`
[INFO] [stderr]     Checking rust-by-example-exercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/bin/7-expressions.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         2 * x;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/bin/9-2-2-closures-as-input-params.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::mem;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/bin/8-5-match.rs:22:15
[INFO] [stderr]    |
[INFO] [stderr] 22 |             13...19 => println!("This is 13...19"),
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/9-2-2-closures-as-input-params.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut farewell = String::from("goodbye");
[INFO] [stderr]   |         ----^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/9-2-2-closures-as-input-params.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn apply<F>(mut f: F) where F: FnOnce() {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RGB`
[INFO] [stderr]   --> src/bin/8-5-match.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     RGB(u8, u8, u8),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HSV`
[INFO] [stderr]   --> src/bin/8-5-match.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     HSV(u16, u8, u8),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HSL`
[INFO] [stderr]   --> src/bin/8-5-match.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     HSL(u16, u8, u8),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CMY`
[INFO] [stderr]   --> src/bin/8-5-match.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     CMY(u8, u8, u8),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CMYK`
[INFO] [stderr]   --> src/bin/8-5-match.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     CMYK(u8, u8, u8, u8)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: expected item, found `36`
[INFO] [stderr]   --> src/bin/13-5-2-generic-bounds-multiple.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | 36
[INFO] [stderr]    | ^^ expected item
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust-by-example-exercises`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]  --> src/bin/8-5-3-match-binding.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 |         n @ 1 ... 12 => println!("Child of age {}", n),
[INFO] [stderr]   |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]  --> src/bin/8-5-3-match-binding.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |         n @ 13 ... 19 => println!("Teen of age {}", n),
[INFO] [stderr]   |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/bin/7-expressions.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         2 * x;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c5026080620727ffdffff863763ca88ddb154d2f74ffa3bb0edf39d16500a516"`
[INFO] running `"docker" "rm" "-f" "c5026080620727ffdffff863763ca88ddb154d2f74ffa3bb0edf39d16500a516"`
[INFO] [stdout] c5026080620727ffdffff863763ca88ddb154d2f74ffa3bb0edf39d16500a516