[INFO] updating cached repository khionu/sudoku_solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/khionu/sudoku_solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/khionu/sudoku_solver" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/khionu/sudoku_solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/khionu/sudoku_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/khionu/sudoku_solver" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/khionu/sudoku_solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/khionu/sudoku_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 84c98ab4002e56403bfe6b0a2a58a56d968eddf9
[INFO] sha for GitHub repo khionu/sudoku_solver: 84c98ab4002e56403bfe6b0a2a58a56d968eddf9
[INFO] validating manifest of khionu/sudoku_solver 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 khionu/sudoku_solver 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 khionu/sudoku_solver
[INFO] finished frobbing khionu/sudoku_solver
[INFO] frobbed toml for khionu/sudoku_solver written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/khionu/sudoku_solver/Cargo.toml
[INFO] started frobbing khionu/sudoku_solver
[INFO] finished frobbing khionu/sudoku_solver
[INFO] frobbed toml for khionu/sudoku_solver written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/khionu/sudoku_solver/Cargo.toml
[INFO] crate khionu/sudoku_solver 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 khionu/sudoku_solver against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/khionu/sudoku_solver:/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] a504a81fd473424307d49c1c0cf1d14f93e3253ef92ed7ba511b4a994fd0a05b
[INFO] running `"docker" "start" "-a" "a504a81fd473424307d49c1c0cf1d14f93e3253ef92ed7ba511b4a994fd0a05b"`
[INFO] [stderr]     Checking sudoku_solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `usize` in the current scope
[INFO] [stderr]   --> src/main.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let threads = usize::from_str(std::env::var("RUST_SUDOKU_THREADS")
[INFO] [stderr]    |                          ^^^^^^^^ function or associated item not found in `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `usize` in the current scope
[INFO] [stderr]   --> src/main.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let threads = usize::from_str(std::env::var("RUST_SUDOKU_THREADS")
[INFO] [stderr]    |                          ^^^^^^^^ function or associated item not found in `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `sudoku_solver`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `sudoku_solver`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a504a81fd473424307d49c1c0cf1d14f93e3253ef92ed7ba511b4a994fd0a05b"`
[INFO] running `"docker" "rm" "-f" "a504a81fd473424307d49c1c0cf1d14f93e3253ef92ed7ba511b4a994fd0a05b"`
[INFO] [stdout] a504a81fd473424307d49c1c0cf1d14f93e3253ef92ed7ba511b4a994fd0a05b