Dec 18 06:23:46.540 INFO checking MikkelSchubert/disk_usage against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:23:46.540 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/MikkelSchubert/disk_usage:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:23:46.749 INFO [stdout] c46cf4a278a10ba182f87f7b291958bdc25b6c42f9933dc4cc3a1cfd4a3bc97b
Dec 18 06:23:46.751 INFO running `"docker" "start" "-a" "c46cf4a278a10ba182f87f7b291958bdc25b6c42f9933dc4cc3a1cfd4a3bc97b"`
Dec 18 06:23:47.393 INFO [stderr]     Checking clap v2.21.1
Dec 18 06:23:52.763 INFO [stderr]     Checking disk_usage v0.1.0 (/opt/crater/workdir)
Dec 18 06:23:53.245 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:53.245 INFO [stderr]    --> src/main.rs:120:13
Dec 18 06:23:53.245 INFO [stderr]     |
Dec 18 06:23:53.245 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 18 06:23:53.245 INFO [stderr]     |             ----^^^^
Dec 18 06:23:53.245 INFO [stderr]     |             |
Dec 18 06:23:53.245 INFO [stderr]     |             help: remove this `mut`
Dec 18 06:23:53.245 INFO [stderr]     |
Dec 18 06:23:53.245 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 06:23:53.245 INFO [stderr] 
Dec 18 06:23:53.245 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:53.245 INFO [stderr]    --> src/main.rs:120:13
Dec 18 06:23:53.245 INFO [stderr]     |
Dec 18 06:23:53.245 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 18 06:23:53.245 INFO [stderr]     |             ----^^^^
Dec 18 06:23:53.245 INFO [stderr]     |             |
Dec 18 06:23:53.245 INFO [stderr]     |             help: remove this `mut`
Dec 18 06:23:53.245 INFO [stderr] 
Dec 18 06:23:53.255 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:53.255 INFO [stderr]    --> src/main.rs:120:13
Dec 18 06:23:53.255 INFO [stderr]     |
Dec 18 06:23:53.255 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 18 06:23:53.255 INFO [stderr]     |             ----^^^^
Dec 18 06:23:53.255 INFO [stderr]     |             |
Dec 18 06:23:53.255 INFO [stderr]     |             help: remove this `mut`
Dec 18 06:23:53.255 INFO [stderr]     |
Dec 18 06:23:53.255 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 06:23:53.255 INFO [stderr] 
Dec 18 06:23:53.255 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:23:53.255 INFO [stderr]    --> src/main.rs:120:13
Dec 18 06:23:53.255 INFO [stderr]     |
Dec 18 06:23:53.255 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 18 06:23:53.255 INFO [stderr]     |             ----^^^^
Dec 18 06:23:53.255 INFO [stderr]     |             |
Dec 18 06:23:53.255 INFO [stderr]     |             help: remove this `mut`
Dec 18 06:23:53.255 INFO [stderr] 
Dec 18 06:23:53.295 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.96s
Dec 18 06:23:53.600 INFO running `"docker" "inspect" "c46cf4a278a10ba182f87f7b291958bdc25b6c42f9933dc4cc3a1cfd4a3bc97b"`
Dec 18 06:23:53.721 INFO running `"docker" "rm" "-f" "c46cf4a278a10ba182f87f7b291958bdc25b6c42f9933dc4cc3a1cfd4a3bc97b"`
Dec 18 06:23:53.838 INFO [stdout] c46cf4a278a10ba182f87f7b291958bdc25b6c42f9933dc4cc3a1cfd4a3bc97b