Dec 04 17:01:03.166 INFO checking jacobvaneijk/dmr against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 17:01:03.166 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 17:01:03.655 INFO [stdout] da6a7046ef1747cd09c7d465c60a835bf331342fa3c5da6fee2e86fc2fb732d4
Dec 04 17:01:03.657 INFO running `"docker" "start" "-a" "da6a7046ef1747cd09c7d465c60a835bf331342fa3c5da6fee2e86fc2fb732d4"`
Dec 04 17:01:04.907 INFO [stderr] usermod: no changes
Dec 04 17:01:04.959 INFO [stderr]     Checking dmr v0.1.0 (/source)
Dec 04 17:01:05.499 INFO [stderr] warning: unused variable: `output`
Dec 04 17:01:05.499 INFO [stderr]   --> src/main.rs:47:9
Dec 04 17:01:05.499 INFO [stderr]    |
Dec 04 17:01:05.499 INFO [stderr] 47 |     let output = match matches.opt_str("o") {
Dec 04 17:01:05.499 INFO [stderr]    |         ^^^^^^ help: consider using `_output` instead
Dec 04 17:01:05.499 INFO [stderr]    |
Dec 04 17:01:05.499 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 17:01:05.499 INFO [stderr] 
Dec 04 17:01:05.514 INFO [stderr] warning: variable does not need to be mutable
Dec 04 17:01:05.514 INFO [stderr]   --> src/driver.rs:28:9
Dec 04 17:01:05.514 INFO [stderr]    |
Dec 04 17:01:05.514 INFO [stderr] 28 |     let mut src = match read_file(filename) {
Dec 04 17:01:05.514 INFO [stderr]    |         ----^^^
Dec 04 17:01:05.514 INFO [stderr]    |         |
Dec 04 17:01:05.514 INFO [stderr]    |         help: remove this `mut`
Dec 04 17:01:05.514 INFO [stderr]    |
Dec 04 17:01:05.514 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 17:01:05.514 INFO [stderr] 
Dec 04 17:01:05.585 INFO [stderr] warning: unused variable: `output`
Dec 04 17:01:05.585 INFO [stderr]   --> src/main.rs:47:9
Dec 04 17:01:05.585 INFO [stderr]    |
Dec 04 17:01:05.585 INFO [stderr] 47 |     let output = match matches.opt_str("o") {
Dec 04 17:01:05.585 INFO [stderr]    |         ^^^^^^ help: consider using `_output` instead
Dec 04 17:01:05.585 INFO [stderr]    |
Dec 04 17:01:05.585 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 17:01:05.585 INFO [stderr] 
Dec 04 17:01:05.599 INFO [stderr] warning: variable does not need to be mutable
Dec 04 17:01:05.599 INFO [stderr]   --> src/driver.rs:28:9
Dec 04 17:01:05.599 INFO [stderr]    |
Dec 04 17:01:05.599 INFO [stderr] 28 |     let mut src = match read_file(filename) {
Dec 04 17:01:05.599 INFO [stderr]    |         ----^^^
Dec 04 17:01:05.599 INFO [stderr]    |         |
Dec 04 17:01:05.599 INFO [stderr]    |         help: remove this `mut`
Dec 04 17:01:05.599 INFO [stderr]    |
Dec 04 17:01:05.599 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 17:01:05.599 INFO [stderr] 
Dec 04 17:01:05.627 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 04 17:01:05.627 INFO [stderr] su: No module specific data is present
Dec 04 17:01:06.580 INFO running `"docker" "inspect" "da6a7046ef1747cd09c7d465c60a835bf331342fa3c5da6fee2e86fc2fb732d4"`
Dec 04 17:01:07.015 INFO running `"docker" "rm" "-f" "da6a7046ef1747cd09c7d465c60a835bf331342fa3c5da6fee2e86fc2fb732d4"`
Dec 04 17:01:07.336 INFO [stdout] da6a7046ef1747cd09c7d465c60a835bf331342fa3c5da6fee2e86fc2fb732d4