[INFO] updating cached repository https://github.com/marionebl/rust-by-example-exercises
[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] b22ea9a4d0448f54fdbc20b0d014f13f44ae816e
[INFO] checking marionebl/rust-by-example-exercises against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarionebl%2Frust-by-example-exercises" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marionebl/rust-by-example-exercises on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/marionebl/rust-by-example-exercises
[INFO] finished tweaking git repo https://github.com/marionebl/rust-by-example-exercises
[INFO] tweaked toml for git repo https://github.com/marionebl/rust-by-example-exercises written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/marionebl/rust-by-example-exercises already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] bbe004b0c92e33c44587f5c3ee98def20418984b5ca0e3231de3c6ef4997202f
[INFO] running `"docker" "start" "-a" "bbe004b0c92e33c44587f5c3ee98def20418984b5ca0e3231de3c6ef4997202f"`
[INFO] [stderr]     Checking rust-by-example-exercises v0.1.0 (/opt/rustwide/workdir)
[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: 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/bin/9-2-5-closures-as-output.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn create_fn() -> Box<Fn()> {
[INFO] [stderr]   |                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bin/9-2-5-closures-as-output.rs:14:26
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn create_fnmut() -> Box<FnMut()> {
[INFO] [stderr]    |                          ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/bin/9-2-6-closures-std-lib-iterator-any.rs:16:70
[INFO] [stderr]    |
[INFO] [stderr] 16 |     println!("2 in array2: {}", array2.into_iter().any(|&x| x == 2));;
[INFO] [stderr]    |                                                                      ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[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] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/bin/9-2-6-closures-std-lib-iterator-any.rs:16:40
[INFO] [stderr]    |
[INFO] [stderr] 16 |     println!("2 in array2: {}", array2.into_iter().any(|&x| x == 2));;
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: lint `unused_doc_comment` has been renamed to `unused_doc_comments`
[INFO] [stderr]  --> src/bin/3-2-1-enums.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![allow(unused_doc_comment)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_doc_comments`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/bin/8-2-loop.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         'inner: loop {
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/bin/8-2-loop.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |             break 'outer;
[INFO] [stderr]    |             ------------ any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 35 |         println!("This point will never be reached");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/bin/3-2-1-enums.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     /// "my_text".to_owned() ~= String::from("my_text");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 41 |     let pasted = WebEvent::Paste("my text".to_owned());
[INFO] [stderr]    |     --------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[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] 
[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: unused label
[INFO] [stderr]   --> src/bin/8-2-loop.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         'inner: loop {
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/bin/8-2-loop.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |             break 'outer;
[INFO] [stderr]    |             ------------ any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 35 |         println!("This point will never be reached");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[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: `...` 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: 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: build failed
[INFO] running `"docker" "inspect" "bbe004b0c92e33c44587f5c3ee98def20418984b5ca0e3231de3c6ef4997202f"`
[INFO] running `"docker" "rm" "-f" "bbe004b0c92e33c44587f5c3ee98def20418984b5ca0e3231de3c6ef4997202f"`
[INFO] [stdout] bbe004b0c92e33c44587f5c3ee98def20418984b5ca0e3231de3c6ef4997202f
