[INFO] updating cached repository rcoverick/rust_dailyprogrammer [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/rcoverick/rust_dailyprogrammer [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/rcoverick/rust_dailyprogrammer" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rcoverick/rust_dailyprogrammer"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rcoverick/rust_dailyprogrammer'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/rcoverick/rust_dailyprogrammer" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rcoverick/rust_dailyprogrammer"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rcoverick/rust_dailyprogrammer'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 7eba5007eb1ec145617b2771d020da0663dd7473 [INFO] sha for GitHub repo rcoverick/rust_dailyprogrammer: 7eba5007eb1ec145617b2771d020da0663dd7473 [INFO] validating manifest of rcoverick/rust_dailyprogrammer 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 rcoverick/rust_dailyprogrammer 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 rcoverick/rust_dailyprogrammer [INFO] finished frobbing rcoverick/rust_dailyprogrammer [INFO] frobbed toml for rcoverick/rust_dailyprogrammer written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rcoverick/rust_dailyprogrammer/Cargo.toml [INFO] started frobbing rcoverick/rust_dailyprogrammer [INFO] finished frobbing rcoverick/rust_dailyprogrammer [INFO] frobbed toml for rcoverick/rust_dailyprogrammer written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rcoverick/rust_dailyprogrammer/Cargo.toml [INFO] crate rcoverick/rust_dailyprogrammer 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 rcoverick/rust_dailyprogrammer against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rcoverick/rust_dailyprogrammer:/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] 72727c3afeb73875528621d8cc10acf455cf3c46cd04f416ae68b6fada60afd6 [INFO] running `"docker" "start" "-a" "72727c3afeb73875528621d8cc10acf455cf3c46cd04f416ae68b6fada60afd6"` [INFO] [stderr] Checking dailyprogrammer v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/challenge/easy/pandigital_roman_numbers.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | / ///Numerals need to be in order. Each pair of numerals can be swapped to form a different number. [INFO] [stderr] 4 | | ///M+(DC or CD)+(LX or XL)+(VI or IV) = a pandigital roman numeral with all of the numerals exactly once [INFO] [stderr] | |______________________________________________________________________________________________________________^ [INFO] [stderr] 5 | / for m in [1000].into_iter(){ [INFO] [stderr] 6 | | for cd in [400, 600].into_iter(){ [INFO] [stderr] 7 | | for xl in [40,60].into_iter(){ [INFO] [stderr] 8 | | for iv in [4,6].into_iter(){ [INFO] [stderr] ... | [INFO] [stderr] 12 | | } [INFO] [stderr] 13 | | } [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: unused doc comment [INFO] [stderr] --> src/challenge/easy/pandigital_roman_numbers.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | / ///Numerals need to be in order. Each pair of numerals can be swapped to form a different number. [INFO] [stderr] 4 | | ///M+(DC or CD)+(LX or XL)+(VI or IV) = a pandigital roman numeral with all of the numerals exactly once [INFO] [stderr] | |______________________________________________________________________________________________________________^ [INFO] [stderr] 5 | / for m in [1000].into_iter(){ [INFO] [stderr] 6 | | for cd in [400, 600].into_iter(){ [INFO] [stderr] 7 | | for xl in [40,60].into_iter(){ [INFO] [stderr] 8 | | for iv in [4,6].into_iter(){ [INFO] [stderr] ... | [INFO] [stderr] 12 | | } [INFO] [stderr] 13 | | } [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: unnecessary parentheses around method argument [INFO] [stderr] --> src/challenge/intermediate/pgm_manipulation.rs:20:32 [INFO] [stderr] | [INFO] [stderr] 20 | io::stdin().read_to_string((&mut buf)).unwrap(); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around method argument [INFO] [stderr] --> src/challenge/intermediate/pgm_manipulation.rs:20:32 [INFO] [stderr] | [INFO] [stderr] 20 | io::stdin().read_to_string((&mut buf)).unwrap(); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/challenge/intermediate/pgm_manipulation.rs:38:41 [INFO] [stderr] | [INFO] [stderr] 38 | res.chunks_mut(width as usize).map(|mut x| x.reverse()).count(); [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/challenge/intermediate/pgm_manipulation.rs:38:41 [INFO] [stderr] | [INFO] [stderr] 38 | res.chunks_mut(width as usize).map(|mut x| x.reverse()).count(); [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] Finished dev [unoptimized + debuginfo] target(s) in 2.08s [INFO] running `"docker" "inspect" "72727c3afeb73875528621d8cc10acf455cf3c46cd04f416ae68b6fada60afd6"` [INFO] running `"docker" "rm" "-f" "72727c3afeb73875528621d8cc10acf455cf3c46cd04f416ae68b6fada60afd6"` [INFO] [stdout] 72727c3afeb73875528621d8cc10acf455cf3c46cd04f416ae68b6fada60afd6