[INFO] updating cached repository muggenhor/rudoku
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/muggenhor/rudoku
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/muggenhor/rudoku" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/muggenhor/rudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/muggenhor/rudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/muggenhor/rudoku" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/muggenhor/rudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/muggenhor/rudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e56514818b3e07b6644c305613068004d23f7ccf
[INFO] sha for GitHub repo muggenhor/rudoku: e56514818b3e07b6644c305613068004d23f7ccf
[INFO] validating manifest of muggenhor/rudoku 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 muggenhor/rudoku 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 muggenhor/rudoku
[INFO] finished frobbing muggenhor/rudoku
[INFO] frobbed toml for muggenhor/rudoku written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/muggenhor/rudoku/Cargo.toml
[INFO] started frobbing muggenhor/rudoku
[INFO] finished frobbing muggenhor/rudoku
[INFO] frobbed toml for muggenhor/rudoku written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/muggenhor/rudoku/Cargo.toml
[INFO] crate muggenhor/rudoku 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] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/muggenhor/rudoku/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 muggenhor/rudoku against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-2/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/muggenhor/rudoku:/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] b3973f9ef856a7c3342e5a614606b5749969de22a7de52f9f17088483b7026de
[INFO] running `"docker" "start" "-a" "b3973f9ef856a7c3342e5a614606b5749969de22a7de52f9f17088483b7026de"`
[INFO] [stderr]     Checking rudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |         for i in (0 .. 9) {
[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 `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:67:20
[INFO] [stderr]    |
[INFO] [stderr] 67 |         for row in (0 .. self.cells.len()) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:68:24
[INFO] [stderr]    |
[INFO] [stderr] 68 |             for col in (0 .. self.cells[row].len()) {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |         for row in (0 .. self.cells.len()) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:101:32
[INFO] [stderr]     |
[INFO] [stderr] 101 |                     for col in (0 .. self.cells[row].len()) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:111:20
[INFO] [stderr]     |
[INFO] [stderr] 111 |         for col in (0 .. self.cells[0].len()) {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:113:24
[INFO] [stderr]     |
[INFO] [stderr] 113 |             for row in (0 .. self.cells.len()) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |             for row in (0 .. self.cells.len()) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:127:32
[INFO] [stderr]     |
[INFO] [stderr] 127 |                     for row in (0 .. self.cells.len()) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:137:26
[INFO] [stderr]     |
[INFO] [stderr] 137 |         for row_block in (0 .. 3) {
[INFO] [stderr]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:138:30
[INFO] [stderr]     |
[INFO] [stderr] 138 |             for col_block in (0 .. 3) {
[INFO] [stderr]     |                              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:141:26
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 for i in (0 .. 9) {
[INFO] [stderr]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:150:26
[INFO] [stderr]     |
[INFO] [stderr] 150 |                 for i in (0 .. 9) {
[INFO] [stderr]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:163:34
[INFO] [stderr]     |
[INFO] [stderr] 163 |                         for i in (0 .. 9) {
[INFO] [stderr]     |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/rudoku/mod.rs:271:64
[INFO] [stderr]     |
[INFO] [stderr] 271 |             '1'...'9' => cur_puzzle.set_item(col_num, row_num, (c as usize - '0' as usize)),
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |         for i in (0 .. 9) {
[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 `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:67:20
[INFO] [stderr]    |
[INFO] [stderr] 67 |         for row in (0 .. self.cells.len()) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:68:24
[INFO] [stderr]    |
[INFO] [stderr] 68 |             for col in (0 .. self.cells[row].len()) {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/rudoku/mod.rs:85:20
[INFO] [stderr]    |
[INFO] [stderr] 85 |         for row in (0 .. self.cells.len()) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:101:32
[INFO] [stderr]     |
[INFO] [stderr] 101 |                     for col in (0 .. self.cells[row].len()) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:111:20
[INFO] [stderr]     |
[INFO] [stderr] 111 |         for col in (0 .. self.cells[0].len()) {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:113:24
[INFO] [stderr]     |
[INFO] [stderr] 113 |             for row in (0 .. self.cells.len()) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |             for row in (0 .. self.cells.len()) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:127:32
[INFO] [stderr]     |
[INFO] [stderr] 127 |                     for row in (0 .. self.cells.len()) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:137:26
[INFO] [stderr]     |
[INFO] [stderr] 137 |         for row_block in (0 .. 3) {
[INFO] [stderr]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:138:30
[INFO] [stderr]     |
[INFO] [stderr] 138 |             for col_block in (0 .. 3) {
[INFO] [stderr]     |                              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:141:26
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 for i in (0 .. 9) {
[INFO] [stderr]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:150:26
[INFO] [stderr]     |
[INFO] [stderr] 150 |                 for i in (0 .. 9) {
[INFO] [stderr]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/rudoku/mod.rs:163:34
[INFO] [stderr]     |
[INFO] [stderr] 163 |                         for i in (0 .. 9) {
[INFO] [stderr]     |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/rudoku/mod.rs:271:64
[INFO] [stderr]     |
[INFO] [stderr] 271 |             '1'...'9' => cur_puzzle.set_item(col_num, row_num, (c as usize - '0' as usize)),
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `"docker" "inspect" "b3973f9ef856a7c3342e5a614606b5749969de22a7de52f9f17088483b7026de"`
[INFO] running `"docker" "rm" "-f" "b3973f9ef856a7c3342e5a614606b5749969de22a7de52f9f17088483b7026de"`
[INFO] [stdout] b3973f9ef856a7c3342e5a614606b5749969de22a7de52f9f17088483b7026de