Dec 17 22:41:18.730 INFO checking jacobvaneijk/dmr against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 22:41:18.730 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/jacobvaneijk/dmr:/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 22:41:19.116 INFO [stdout] e0f6bd9e8bac9f667c3a6e5e2526ccf02dda319b7a266c81d5f04794a040bc87
Dec 17 22:41:19.118 INFO running `"docker" "start" "-a" "e0f6bd9e8bac9f667c3a6e5e2526ccf02dda319b7a266c81d5f04794a040bc87"`
Dec 17 22:41:20.657 INFO [stderr]     Checking dmr v0.1.0 (/opt/crater/workdir)
Dec 17 22:41:20.982 INFO [stderr] warning: unused variable: `output`
Dec 17 22:41:20.982 INFO [stderr]   --> src/main.rs:47:9
Dec 17 22:41:20.982 INFO [stderr]    |
Dec 17 22:41:20.982 INFO [stderr] 47 |     let output = match matches.opt_str("o") {
Dec 17 22:41:20.982 INFO [stderr]    |         ^^^^^^ help: consider using `_output` instead
Dec 17 22:41:20.982 INFO [stderr]    |
Dec 17 22:41:20.982 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 22:41:20.982 INFO [stderr] 
Dec 17 22:41:21.000 INFO [stderr] warning: variable does not need to be mutable
Dec 17 22:41:21.000 INFO [stderr]   --> src/driver.rs:28:9
Dec 17 22:41:21.000 INFO [stderr]    |
Dec 17 22:41:21.000 INFO [stderr] 28 |     let mut src = match read_file(filename) {
Dec 17 22:41:21.000 INFO [stderr]    |         ----^^^
Dec 17 22:41:21.000 INFO [stderr]    |         |
Dec 17 22:41:21.000 INFO [stderr]    |         help: remove this `mut`
Dec 17 22:41:21.001 INFO [stderr]    |
Dec 17 22:41:21.001 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 22:41:21.001 INFO [stderr] 
Dec 17 22:41:21.004 INFO [stderr] warning: unused variable: `output`
Dec 17 22:41:21.004 INFO [stderr]   --> src/main.rs:47:9
Dec 17 22:41:21.004 INFO [stderr]    |
Dec 17 22:41:21.004 INFO [stderr] 47 |     let output = match matches.opt_str("o") {
Dec 17 22:41:21.005 INFO [stderr]    |         ^^^^^^ help: consider using `_output` instead
Dec 17 22:41:21.005 INFO [stderr]    |
Dec 17 22:41:21.005 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 22:41:21.005 INFO [stderr] 
Dec 17 22:41:21.014 INFO [stderr] warning: variable does not need to be mutable
Dec 17 22:41:21.014 INFO [stderr]   --> src/driver.rs:28:9
Dec 17 22:41:21.014 INFO [stderr]    |
Dec 17 22:41:21.014 INFO [stderr] 28 |     let mut src = match read_file(filename) {
Dec 17 22:41:21.014 INFO [stderr]    |         ----^^^
Dec 17 22:41:21.014 INFO [stderr]    |         |
Dec 17 22:41:21.014 INFO [stderr]    |         help: remove this `mut`
Dec 17 22:41:21.014 INFO [stderr]    |
Dec 17 22:41:21.015 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 22:41:21.015 INFO [stderr] 
Dec 17 22:41:21.057 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Dec 17 22:41:21.732 INFO running `"docker" "inspect" "e0f6bd9e8bac9f667c3a6e5e2526ccf02dda319b7a266c81d5f04794a040bc87"`
Dec 17 22:41:22.058 INFO running `"docker" "rm" "-f" "e0f6bd9e8bac9f667c3a6e5e2526ccf02dda319b7a266c81d5f04794a040bc87"`
Dec 17 22:41:22.302 INFO [stdout] e0f6bd9e8bac9f667c3a6e5e2526ccf02dda319b7a266c81d5f04794a040bc87