Dec 11 09:02:27.985 INFO checking springbov/stupid-shell against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 09:02:27.985 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 09:02:28.370 INFO [stdout] 6240fe16c3cc05921b6886cec3f4f5b46341984d19929bab9205b8aad3ddb39a
Dec 11 09:02:28.378 INFO running `"docker" "start" "-a" "6240fe16c3cc05921b6886cec3f4f5b46341984d19929bab9205b8aad3ddb39a"`
Dec 11 09:02:29.807 INFO [stderr] usermod: no changes
Dec 11 09:02:29.850 INFO [stderr]     Checking stupid-shell v0.1.0 (/source)
Dec 11 09:02:30.068 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.068 INFO [stderr]   --> src/shell.rs:19:10
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
Dec 11 09:02:30.068 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 09:02:30.068 INFO [stderr] 
Dec 11 09:02:30.068 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.068 INFO [stderr]   --> src/shell.rs:37:12
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
Dec 11 09:02:30.068 INFO [stderr]    |            ^ help: consider using `_x` instead
Dec 11 09:02:30.068 INFO [stderr] 
Dec 11 09:02:30.068 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.068 INFO [stderr]   --> src/shell.rs:45:11
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
Dec 11 09:02:30.068 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 11 09:02:30.068 INFO [stderr] 
Dec 11 09:02:30.068 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.068 INFO [stderr]   --> src/shell.rs:53:9
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
Dec 11 09:02:30.068 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 11 09:02:30.068 INFO [stderr] 
Dec 11 09:02:30.068 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.068 INFO [stderr]   --> src/shell.rs:62:16
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
Dec 11 09:02:30.068 INFO [stderr]    |                ^ help: consider using `_x` instead
Dec 11 09:02:30.068 INFO [stderr] 
Dec 11 09:02:30.068 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.068 INFO [stderr]   --> src/shell.rs:70:11
Dec 11 09:02:30.068 INFO [stderr]    |
Dec 11 09:02:30.068 INFO [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
Dec 11 09:02:30.068 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 11 09:02:30.068 INFO [stderr] 
Dec 11 09:02:30.108 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:02:30.108 INFO [stderr]   --> src/main.rs:12:5
Dec 11 09:02:30.108 INFO [stderr]    |
Dec 11 09:02:30.108 INFO [stderr] 12 |     io::stdout().flush();
Dec 11 09:02:30.108 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:02:30.108 INFO [stderr]    |
Dec 11 09:02:30.108 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 09:02:30.108 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:02:30.108 INFO [stderr] 
Dec 11 09:02:30.136 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.136 INFO [stderr]   --> src/shell.rs:19:10
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr] 19 |   fn vim(x: Option<String>) -> Option<String>
Dec 11 09:02:30.136 INFO [stderr]    |          ^ help: consider using `_x` instead
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 09:02:30.136 INFO [stderr] 
Dec 11 09:02:30.136 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.136 INFO [stderr]   --> src/shell.rs:37:12
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr] 37 |   fn emacs(x: Option<String>) -> Option<String>
Dec 11 09:02:30.136 INFO [stderr]    |            ^ help: consider using `_x` instead
Dec 11 09:02:30.136 INFO [stderr] 
Dec 11 09:02:30.136 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.136 INFO [stderr]   --> src/shell.rs:45:11
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr] 45 |   fn nano(x: Option<String>) -> Option<String>
Dec 11 09:02:30.136 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 11 09:02:30.136 INFO [stderr] 
Dec 11 09:02:30.136 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.136 INFO [stderr]   --> src/shell.rs:53:9
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr] 53 |   fn ed(x: Option<String>) -> Option<String>
Dec 11 09:02:30.136 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 11 09:02:30.136 INFO [stderr] 
Dec 11 09:02:30.136 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.136 INFO [stderr]   --> src/shell.rs:62:16
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr] 62 |   fn butterfly(x: Option<String>) -> Option<String>
Dec 11 09:02:30.136 INFO [stderr]    |                ^ help: consider using `_x` instead
Dec 11 09:02:30.136 INFO [stderr] 
Dec 11 09:02:30.136 INFO [stderr] warning: unused variable: `x`
Dec 11 09:02:30.136 INFO [stderr]   --> src/shell.rs:70:11
Dec 11 09:02:30.136 INFO [stderr]    |
Dec 11 09:02:30.136 INFO [stderr] 70 |   fn life(x: Option<String>) -> Option<String>
Dec 11 09:02:30.137 INFO [stderr]    |           ^ help: consider using `_x` instead
Dec 11 09:02:30.137 INFO [stderr] 
Dec 11 09:02:30.160 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:02:30.160 INFO [stderr]   --> src/main.rs:12:5
Dec 11 09:02:30.160 INFO [stderr]    |
Dec 11 09:02:30.160 INFO [stderr] 12 |     io::stdout().flush();
Dec 11 09:02:30.160 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:02:30.160 INFO [stderr]    |
Dec 11 09:02:30.160 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 09:02:30.160 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:02:30.160 INFO [stderr] 
Dec 11 09:02:30.197 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
Dec 11 09:02:30.199 INFO [stderr] su: No module specific data is present
Dec 11 09:02:30.822 INFO running `"docker" "inspect" "6240fe16c3cc05921b6886cec3f4f5b46341984d19929bab9205b8aad3ddb39a"`
Dec 11 09:02:31.219 INFO running `"docker" "rm" "-f" "6240fe16c3cc05921b6886cec3f4f5b46341984d19929bab9205b8aad3ddb39a"`
Dec 11 09:02:31.375 INFO [stdout] 6240fe16c3cc05921b6886cec3f4f5b46341984d19929bab9205b8aad3ddb39a