Dec 11 16:45:35.205 INFO checking jacobvaneijk/dmr against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 16:45:35.205 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 16:45:35.710 INFO [stdout] 2924da3859fdc6ecf60ff2d566a0f0b734eb515cb4e406ecf1b239ed00c5d093
Dec 11 16:45:35.712 INFO running `"docker" "start" "-a" "2924da3859fdc6ecf60ff2d566a0f0b734eb515cb4e406ecf1b239ed00c5d093"`
Dec 11 16:45:37.152 INFO [stderr] usermod: no changes
Dec 11 16:45:37.240 INFO [stderr]     Checking dmr v0.1.0 (/source)
Dec 11 16:45:37.712 INFO [stderr] warning: unused variable: `output`
Dec 11 16:45:37.712 INFO [stderr]   --> src/main.rs:47:9
Dec 11 16:45:37.712 INFO [stderr]    |
Dec 11 16:45:37.712 INFO [stderr] 47 |     let output = match matches.opt_str("o") {
Dec 11 16:45:37.712 INFO [stderr]    |         ^^^^^^ help: consider using `_output` instead
Dec 11 16:45:37.712 INFO [stderr]    |
Dec 11 16:45:37.712 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:45:37.712 INFO [stderr] 
Dec 11 16:45:37.740 INFO [stderr] warning: variable does not need to be mutable
Dec 11 16:45:37.740 INFO [stderr]   --> src/driver.rs:28:9
Dec 11 16:45:37.740 INFO [stderr]    |
Dec 11 16:45:37.740 INFO [stderr] 28 |     let mut src = match read_file(filename) {
Dec 11 16:45:37.740 INFO [stderr]    |         ----^^^
Dec 11 16:45:37.740 INFO [stderr]    |         |
Dec 11 16:45:37.740 INFO [stderr]    |         help: remove this `mut`
Dec 11 16:45:37.740 INFO [stderr]    |
Dec 11 16:45:37.740 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 16:45:37.740 INFO [stderr] 
Dec 11 16:45:37.865 INFO [stderr] warning: unused variable: `output`
Dec 11 16:45:37.879 INFO [stderr]   --> src/main.rs:47:9
Dec 11 16:45:37.880 INFO [stderr]    |
Dec 11 16:45:37.880 INFO [stderr] 47 |     let output = match matches.opt_str("o") {
Dec 11 16:45:37.880 INFO [stderr]    |         ^^^^^^ help: consider using `_output` instead
Dec 11 16:45:37.880 INFO [stderr]    |
Dec 11 16:45:37.880 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:45:37.880 INFO [stderr] 
Dec 11 16:45:37.880 INFO [stderr] warning: variable does not need to be mutable
Dec 11 16:45:37.880 INFO [stderr]   --> src/driver.rs:28:9
Dec 11 16:45:37.880 INFO [stderr]    |
Dec 11 16:45:37.880 INFO [stderr] 28 |     let mut src = match read_file(filename) {
Dec 11 16:45:37.880 INFO [stderr]    |         ----^^^
Dec 11 16:45:37.880 INFO [stderr]    |         |
Dec 11 16:45:37.880 INFO [stderr]    |         help: remove this `mut`
Dec 11 16:45:37.880 INFO [stderr]    |
Dec 11 16:45:37.880 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 16:45:37.880 INFO [stderr] 
Dec 11 16:45:37.900 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Dec 11 16:45:37.912 INFO [stderr] su: No module specific data is present
Dec 11 16:45:38.734 INFO running `"docker" "inspect" "2924da3859fdc6ecf60ff2d566a0f0b734eb515cb4e406ecf1b239ed00c5d093"`
Dec 11 16:45:39.008 INFO running `"docker" "rm" "-f" "2924da3859fdc6ecf60ff2d566a0f0b734eb515cb4e406ecf1b239ed00c5d093"`
Dec 11 16:45:39.356 INFO [stdout] 2924da3859fdc6ecf60ff2d566a0f0b734eb515cb4e406ecf1b239ed00c5d093