Dec 12 15:04:54.698 INFO checking file_logger-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 15:04:54.698 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 12 15:04:54.946 INFO [stdout] 1b8534237807a50ef285a3e625c56fcad6c6487119875a1f282e812560d2353c
Dec 12 15:04:54.950 INFO running `"docker" "start" "-a" "1b8534237807a50ef285a3e625c56fcad6c6487119875a1f282e812560d2353c"`
Dec 12 15:04:55.531 INFO [stderr] usermod: no changes
Dec 12 15:04:55.596 INFO [stderr]     Checking file_logger v0.1.0 (/source)
Dec 12 15:04:57.011 INFO [stderr] warning: variable does not need to be mutable
Dec 12 15:04:57.011 INFO [stderr]   --> src/format.rs:71:40
Dec 12 15:04:57.011 INFO [stderr]    |
Dec 12 15:04:57.011 INFO [stderr] 71 |     pub fn format<W: io::Write>(&self, mut w:  &mut W, record: &LogRecord, datetime: &Tm) -> Result<(), Error>{
Dec 12 15:04:57.011 INFO [stderr]    |                                        ----^
Dec 12 15:04:57.011 INFO [stderr]    |                                        |
Dec 12 15:04:57.011 INFO [stderr]    |                                        help: remove this `mut`
Dec 12 15:04:57.011 INFO [stderr]    |
Dec 12 15:04:57.011 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 15:04:57.011 INFO [stderr] 
Dec 12 15:04:57.348 INFO [stderr] warning: variable does not need to be mutable
Dec 12 15:04:57.348 INFO [stderr]   --> src/format.rs:71:40
Dec 12 15:04:57.348 INFO [stderr]    |
Dec 12 15:04:57.348 INFO [stderr] 71 |     pub fn format<W: io::Write>(&self, mut w:  &mut W, record: &LogRecord, datetime: &Tm) -> Result<(), Error>{
Dec 12 15:04:57.348 INFO [stderr]    |                                        ----^
Dec 12 15:04:57.348 INFO [stderr]    |                                        |
Dec 12 15:04:57.348 INFO [stderr]    |                                        help: remove this `mut`
Dec 12 15:04:57.348 INFO [stderr]    |
Dec 12 15:04:57.348 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 15:04:57.348 INFO [stderr] 
Dec 12 15:04:58.713 INFO [stderr] warning: unused import: `OnError`
Dec 12 15:04:58.713 INFO [stderr]  --> src/main.rs:6:40
Dec 12 15:04:58.716 INFO [stderr]   |
Dec 12 15:04:58.716 INFO [stderr] 6 | use self::file_logger::{LoggerBuilder, OnError};
Dec 12 15:04:58.716 INFO [stderr]   |                                        ^^^^^^^
Dec 12 15:04:58.716 INFO [stderr]   |
Dec 12 15:04:58.716 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 15:04:58.716 INFO [stderr] 
Dec 12 15:04:58.754 INFO [stderr] warning: unused variable: `regex`
Dec 12 15:04:58.754 INFO [stderr]  --> src/main.rs:9:9
Dec 12 15:04:58.754 INFO [stderr]   |
Dec 12 15:04:58.754 INFO [stderr] 9 |     let regex = Regex::new("test").unwrap();
Dec 12 15:04:58.754 INFO [stderr]   |         ^^^^^ help: consider using `_regex` instead
Dec 12 15:04:58.754 INFO [stderr]   |
Dec 12 15:04:58.754 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 15:04:58.754 INFO [stderr] 
Dec 12 15:04:58.960 INFO [stderr] warning: unused import: `OnError`
Dec 12 15:04:58.960 INFO [stderr]  --> src/main.rs:6:40
Dec 12 15:04:58.960 INFO [stderr]   |
Dec 12 15:04:58.960 INFO [stderr] 6 | use self::file_logger::{LoggerBuilder, OnError};
Dec 12 15:04:58.960 INFO [stderr]   |                                        ^^^^^^^
Dec 12 15:04:58.960 INFO [stderr]   |
Dec 12 15:04:58.960 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 15:04:58.960 INFO [stderr] 
Dec 12 15:04:58.995 INFO [stderr] warning: unused variable: `regex`
Dec 12 15:04:58.995 INFO [stderr]  --> src/main.rs:9:9
Dec 12 15:04:58.995 INFO [stderr]   |
Dec 12 15:04:58.995 INFO [stderr] 9 |     let regex = Regex::new("test").unwrap();
Dec 12 15:04:58.995 INFO [stderr]   |         ^^^^^ help: consider using `_regex` instead
Dec 12 15:04:58.995 INFO [stderr]   |
Dec 12 15:04:58.995 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 15:04:58.995 INFO [stderr] 
Dec 12 15:04:59.035 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.48s
Dec 12 15:04:59.036 INFO [stderr] su: No module specific data is present
Dec 12 15:04:59.315 INFO running `"docker" "inspect" "1b8534237807a50ef285a3e625c56fcad6c6487119875a1f282e812560d2353c"`
Dec 12 15:04:59.403 INFO running `"docker" "rm" "-f" "1b8534237807a50ef285a3e625c56fcad6c6487119875a1f282e812560d2353c"`
Dec 12 15:04:59.487 INFO [stdout] 1b8534237807a50ef285a3e625c56fcad6c6487119875a1f282e812560d2353c