[INFO] updating cached repository https://github.com/mich101mich/sudoku
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 841c7cbb38237c7394db3de6accfe51630b6265c
[INFO] checking mich101mich/sudoku against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmich101mich%2Fsudoku" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mich101mich/sudoku on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mich101mich/sudoku
[INFO] finished tweaking git repo https://github.com/mich101mich/sudoku
[INFO] tweaked toml for git repo https://github.com/mich101mich/sudoku written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/mich101mich/sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a2b2f51899a8a2c664124eb930b770f09bbc9e7c5ddb791041b9145e10b20665
[INFO] running `"docker" "start" "-a" "a2b2f51899a8a2c664124eb930b770f09bbc9e7c5ddb791041b9145e10b20665"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.40
[INFO] [stderr]    Compiling bumpalo v2.3.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.40
[INFO] [stderr]    Compiling regex v1.1.4
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling enum_derive v0.1.7
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.40
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.40
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.40
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.40
[INFO] [stderr]    Compiling js-sys v0.3.17
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling web-sys v0.3.17
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.17
[INFO] [stderr]     Checking smithy_types v0.0.2
[INFO] [stderr]    Compiling smd_macro v0.0.2
[INFO] [stderr]     Checking smithy_core v0.0.2
[INFO] [stderr]     Checking smithy v0.0.2
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     smd!(
[INFO] [stderr] 27 | |         <div style="margin: 0.5cm">
[INFO] [stderr] 28 | |             Difficulty:
[INFO] [stderr] 29 | |             {if difficulty > 3 {
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |         </div>
[INFO] [stderr] 49 | |     )
[INFO] [stderr]    | |     ^
[INFO] [stderr]    | |     |
[INFO] [stderr]    | |_____help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |       in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     smd!(
[INFO] [stderr] 27 | |         <div style="margin: 0.5cm">
[INFO] [stderr] 28 | |             Difficulty:
[INFO] [stderr] 29 | |             {if difficulty > 3 {
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |         </div>
[INFO] [stderr] 49 | |     )
[INFO] [stderr]    | |     ^
[INFO] [stderr]    | |     |
[INFO] [stderr]    | |_____help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |       in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     smd!(
[INFO] [stderr] 27 | |         <div style="margin: 0.5cm">
[INFO] [stderr] 28 | |             Difficulty:
[INFO] [stderr] 29 | |             {if difficulty > 3 {
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |         </div>
[INFO] [stderr] 49 | |     )
[INFO] [stderr]    | |     ^
[INFO] [stderr]    | |     |
[INFO] [stderr]    | |_____not found in this scope
[INFO] [stderr]    |       in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     smd!(
[INFO] [stderr] 27 | |         <div style="margin: 0.5cm">
[INFO] [stderr] 28 | |             Difficulty:
[INFO] [stderr] 29 | |             {if difficulty > 3 {
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |         </div>
[INFO] [stderr] 49 | |     )
[INFO] [stderr]    | |     ^ in this macro invocation
[INFO] [stderr]    | |_____|
[INFO] [stderr]    | 
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]  --> src/lib.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     smd!(
[INFO] [stderr] 27 | |         <div style="margin: 0.5cm">
[INFO] [stderr] 28 | |             Difficulty:
[INFO] [stderr] 29 | |             {if difficulty > 3 {
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |         </div>
[INFO] [stderr] 49 | |     )
[INFO] [stderr]    | |     ^
[INFO] [stderr]    | |     |
[INFO] [stderr]    | |_____not found in this scope
[INFO] [stderr]    |       in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 not found in this scope
[INFO] [stderr]    |                 in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     smd!(
[INFO] [stderr] 27 | |         <div style="margin: 0.5cm">
[INFO] [stderr] 28 | |             Difficulty:
[INFO] [stderr] 29 | |             {if difficulty > 3 {
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |         </div>
[INFO] [stderr] 49 | |     )
[INFO] [stderr]    | |     ^ in this macro invocation
[INFO] [stderr]    | |_____|
[INFO] [stderr]    | 
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]   --> src/lib.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 smd!({difficulty.to_string()})
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr]    = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]  --> src/lib.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `sudoku`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `sudoku`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a2b2f51899a8a2c664124eb930b770f09bbc9e7c5ddb791041b9145e10b20665"`
[INFO] running `"docker" "rm" "-f" "a2b2f51899a8a2c664124eb930b770f09bbc9e7c5ddb791041b9145e10b20665"`
[INFO] [stdout] a2b2f51899a8a2c664124eb930b770f09bbc9e7c5ddb791041b9145e10b20665