[INFO] updating cached repository cheshyre/project-euler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cheshyre/project-euler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cheshyre/project-euler" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/cheshyre/project-euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/cheshyre/project-euler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cheshyre/project-euler" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/cheshyre/project-euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/cheshyre/project-euler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 16a3cc9e70b9199345ed3e1ce6064608fded0052
[INFO] sha for GitHub repo cheshyre/project-euler: 16a3cc9e70b9199345ed3e1ce6064608fded0052
[INFO] validating manifest of cheshyre/project-euler on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cheshyre/project-euler on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cheshyre/project-euler
[INFO] finished frobbing cheshyre/project-euler
[INFO] frobbed toml for cheshyre/project-euler written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/cheshyre/project-euler/Cargo.toml
[INFO] started frobbing cheshyre/project-euler
[INFO] finished frobbing cheshyre/project-euler
[INFO] frobbed toml for cheshyre/project-euler written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/cheshyre/project-euler/Cargo.toml
[INFO] crate cheshyre/project-euler already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cheshyre/project-euler against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-6/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/cheshyre/project-euler:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ae80c9af9a4327144e248f8de9f2fe53fa7df8025b09a9ac1edb92357d858a8b
[INFO] running `"docker" "start" "-a" "ae80c9af9a4327144e248f8de9f2fe53fa7df8025b09a9ac1edb92357d858a8b"`
[INFO] [stderr]     Checking project_euler v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `break_again`
[INFO] [stderr]  --> src/bin/p00004.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut break_again = false;
[INFO] [stderr]   |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_break_again`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/p00004.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut break_again = false;
[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: unused variable: `break_again`
[INFO] [stderr]  --> src/bin/p00004.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut break_again = false;
[INFO] [stderr]   |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_break_again`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/p00004.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut break_again = false;
[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 1.78s
[INFO] running `"docker" "inspect" "ae80c9af9a4327144e248f8de9f2fe53fa7df8025b09a9ac1edb92357d858a8b"`
[INFO] running `"docker" "rm" "-f" "ae80c9af9a4327144e248f8de9f2fe53fa7df8025b09a9ac1edb92357d858a8b"`
[INFO] [stdout] ae80c9af9a4327144e248f8de9f2fe53fa7df8025b09a9ac1edb92357d858a8b