Dec 17 14:53:07.884 INFO checking springbov/stupid-shell against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 14:53:07.884 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/springbov/stupid-shell:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 14:53:08.074 INFO [stdout] 11b82c0c654ee4e902a4206ddf19ae27b206c17d06ea052ffa2cac7f1bc4492a
Dec 17 14:53:08.078 INFO running `"docker" "start" "-a" "11b82c0c654ee4e902a4206ddf19ae27b206c17d06ea052ffa2cac7f1bc4492a"`
Dec 17 14:53:08.596 INFO [stderr]     Checking stupid-shell v0.1.0 (/opt/crater/workdir)
Dec 17 14:53:08.732 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.732 INFO [stderr]   --> src/shell.rs:19:10
Dec 17 14:53:08.732 INFO [stderr]    |
Dec 17 14:53:08.732 INFO [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
Dec 17 14:53:08.732 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 17 14:53:08.732 INFO [stderr]    |
Dec 17 14:53:08.732 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:53:08.732 INFO [stderr] 
Dec 17 14:53:08.732 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.732 INFO [stderr]   --> src/shell.rs:37:12
Dec 17 14:53:08.732 INFO [stderr]    |
Dec 17 14:53:08.732 INFO [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
Dec 17 14:53:08.732 INFO [stderr]    |            ^ help: consider using `_x` instead
Dec 17 14:53:08.732 INFO [stderr] 
Dec 17 14:53:08.732 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.732 INFO [stderr]   --> src/shell.rs:45:11
Dec 17 14:53:08.732 INFO [stderr]    |
Dec 17 14:53:08.732 INFO [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
Dec 17 14:53:08.732 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 17 14:53:08.732 INFO [stderr] 
Dec 17 14:53:08.732 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.732 INFO [stderr]   --> src/shell.rs:53:9
Dec 17 14:53:08.732 INFO [stderr]    |
Dec 17 14:53:08.732 INFO [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
Dec 17 14:53:08.732 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 14:53:08.732 INFO [stderr] 
Dec 17 14:53:08.732 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.732 INFO [stderr]   --> src/shell.rs:62:16
Dec 17 14:53:08.732 INFO [stderr]    |
Dec 17 14:53:08.732 INFO [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
Dec 17 14:53:08.732 INFO [stderr]    |                ^ help: consider using `_x` instead
Dec 17 14:53:08.732 INFO [stderr] 
Dec 17 14:53:08.732 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.733 INFO [stderr]   --> src/shell.rs:70:11
Dec 17 14:53:08.733 INFO [stderr]    |
Dec 17 14:53:08.733 INFO [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
Dec 17 14:53:08.733 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 17 14:53:08.733 INFO [stderr] 
Dec 17 14:53:08.733 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.733 INFO [stderr]   --> src/shell.rs:19:10
Dec 17 14:53:08.733 INFO [stderr]    |
Dec 17 14:53:08.733 INFO [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
Dec 17 14:53:08.733 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 17 14:53:08.733 INFO [stderr]    |
Dec 17 14:53:08.733 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:53:08.733 INFO [stderr] 
Dec 17 14:53:08.733 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.733 INFO [stderr]   --> src/shell.rs:37:12
Dec 17 14:53:08.733 INFO [stderr]    |
Dec 17 14:53:08.733 INFO [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
Dec 17 14:53:08.733 INFO [stderr]    |            ^ help: consider using `_x` instead
Dec 17 14:53:08.733 INFO [stderr] 
Dec 17 14:53:08.733 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.733 INFO [stderr]   --> src/shell.rs:45:11
Dec 17 14:53:08.733 INFO [stderr]    |
Dec 17 14:53:08.733 INFO [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
Dec 17 14:53:08.733 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 17 14:53:08.733 INFO [stderr] 
Dec 17 14:53:08.734 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.734 INFO [stderr]   --> src/shell.rs:53:9
Dec 17 14:53:08.734 INFO [stderr]    |
Dec 17 14:53:08.734 INFO [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
Dec 17 14:53:08.734 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 14:53:08.734 INFO [stderr] 
Dec 17 14:53:08.734 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.734 INFO [stderr]   --> src/shell.rs:62:16
Dec 17 14:53:08.734 INFO [stderr]    |
Dec 17 14:53:08.734 INFO [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
Dec 17 14:53:08.734 INFO [stderr]    |                ^ help: consider using `_x` instead
Dec 17 14:53:08.734 INFO [stderr] 
Dec 17 14:53:08.734 INFO [stderr] warning: unused variable: `x`
Dec 17 14:53:08.734 INFO [stderr]   --> src/shell.rs:70:11
Dec 17 14:53:08.734 INFO [stderr]    |
Dec 17 14:53:08.734 INFO [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
Dec 17 14:53:08.734 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 17 14:53:08.734 INFO [stderr] 
Dec 17 14:53:08.752 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:53:08.752 INFO [stderr]   --> src/main.rs:12:5
Dec 17 14:53:08.752 INFO [stderr]    |
Dec 17 14:53:08.752 INFO [stderr] 12 |     io::stdout().flush();
Dec 17 14:53:08.752 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:53:08.752 INFO [stderr]    |
Dec 17 14:53:08.752 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 14:53:08.752 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:53:08.752 INFO [stderr] 
Dec 17 14:53:08.759 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:53:08.759 INFO [stderr]   --> src/main.rs:12:5
Dec 17 14:53:08.759 INFO [stderr]    |
Dec 17 14:53:08.759 INFO [stderr] 12 |     io::stdout().flush();
Dec 17 14:53:08.759 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:53:08.759 INFO [stderr]    |
Dec 17 14:53:08.759 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 14:53:08.759 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:53:08.759 INFO [stderr] 
Dec 17 14:53:08.782 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
Dec 17 14:53:09.272 INFO running `"docker" "inspect" "11b82c0c654ee4e902a4206ddf19ae27b206c17d06ea052ffa2cac7f1bc4492a"`
Dec 17 14:53:09.598 INFO running `"docker" "rm" "-f" "11b82c0c654ee4e902a4206ddf19ae27b206c17d06ea052ffa2cac7f1bc4492a"`
Dec 17 14:53:09.904 INFO [stdout] 11b82c0c654ee4e902a4206ddf19ae27b206c17d06ea052ffa2cac7f1bc4492a