[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#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarionebl%2Frust-by-example-exercises" "/workspace/builds/worker-8/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/marionebl/rust-by-example-exercises on toolchain ba72b15666b2491415aec703a02c2364fe5e2790 [INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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-8/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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] a2dec7d9561d1a95a53e88c80772a5eb5b9bddd0c42f5b2764df5cf5ef5cb6c2 [INFO] running `"docker" "start" "-a" "a2dec7d9561d1a95a53e88c80772a5eb5b9bddd0c42f5b2764df5cf5ef5cb6c2"` [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(mut f: F) where F: FnOnce() { [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [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: `...` 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: 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 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: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [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(mut f: F) where F: FnOnce() { [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [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 [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [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: 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-find.rs:15:47 [INFO] [stderr] | [INFO] [stderr] 15 | println!("Find 2 in array2: {:?}", array2.into_iter().find(|&&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 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "a2dec7d9561d1a95a53e88c80772a5eb5b9bddd0c42f5b2764df5cf5ef5cb6c2"` [INFO] running `"docker" "rm" "-f" "a2dec7d9561d1a95a53e88c80772a5eb5b9bddd0c42f5b2764df5cf5ef5cb6c2"` [INFO] [stdout] a2dec7d9561d1a95a53e88c80772a5eb5b9bddd0c42f5b2764df5cf5ef5cb6c2