[INFO] updating cached repository robinsonj/project_euler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/robinsonj/project_euler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/robinsonj/project_euler" "work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/robinsonj/project_euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/robinsonj/project_euler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/robinsonj/project_euler" "work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/robinsonj/project_euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/robinsonj/project_euler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ba494a87e0c8f114cd0c9654564a56559da8d47d
[INFO] sha for GitHub repo robinsonj/project_euler: ba494a87e0c8f114cd0c9654564a56559da8d47d
[INFO] validating manifest of robinsonj/project_euler on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of robinsonj/project_euler on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing robinsonj/project_euler
[INFO] finished frobbing robinsonj/project_euler
[INFO] frobbed toml for robinsonj/project_euler written to work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/robinsonj/project_euler/Cargo.toml
[INFO] started frobbing robinsonj/project_euler
[INFO] finished frobbing robinsonj/project_euler
[INFO] frobbed toml for robinsonj/project_euler written to work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/robinsonj/project_euler/Cargo.toml
[INFO] crate robinsonj/project_euler has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking robinsonj/project_euler against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-2/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/robinsonj/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" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ca0efc1cc4471378619217aed0e4ef4d8fad2879f1281fe10ac6474eb8925246
[INFO] running `"docker" "start" "-a" "ca0efc1cc4471378619217aed0e4ef4d8fad2879f1281fe10ac6474eb8925246"`
[INFO] [stderr]     Checking euler_lib v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `file_name`
[INFO] [stderr]   --> src/solver/mod.rs:39:40
[INFO] [stderr]    |
[INFO] [stderr] 39 |       SolverFunction::FunctionWithFile(file_name, solve) => {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: consider using `_file_name` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FunctionWithFile`
[INFO] [stderr]  --> src/solver/mod.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   FunctionWithFile(&'a str, fn() -> String)
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_name`
[INFO] [stderr]   --> src/solver/mod.rs:39:40
[INFO] [stderr]    |
[INFO] [stderr] 39 |       SolverFunction::FunctionWithFile(file_name, solve) => {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: consider using `_file_name` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FunctionWithFile`
[INFO] [stderr]  --> src/solver/mod.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   FunctionWithFile(&'a str, fn() -> String)
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `"docker" "inspect" "ca0efc1cc4471378619217aed0e4ef4d8fad2879f1281fe10ac6474eb8925246"`
[INFO] running `"docker" "rm" "-f" "ca0efc1cc4471378619217aed0e4ef4d8fad2879f1281fe10ac6474eb8925246"`
[INFO] [stdout] ca0efc1cc4471378619217aed0e4ef4d8fad2879f1281fe10ac6474eb8925246