Dec 12 01:24:02.929 INFO checking MikkelSchubert/disk_usage against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 01:24:02.929 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 12 01:24:03.146 INFO [stdout] a1231d6e44ed1c10b8072fabbb3fcebd11555ad1f2ab067d6913c02f2d379db3
Dec 12 01:24:03.148 INFO running `"docker" "start" "-a" "a1231d6e44ed1c10b8072fabbb3fcebd11555ad1f2ab067d6913c02f2d379db3"`
Dec 12 01:24:03.556 INFO [stderr] usermod: no changes
Dec 12 01:24:03.606 INFO [stderr]     Checking nix v0.6.0
Dec 12 01:24:06.284 INFO [stderr]     Checking disk_usage v0.1.0 (/source)
Dec 12 01:24:07.324 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:24:07.324 INFO [stderr]    --> src/main.rs:120:13
Dec 12 01:24:07.324 INFO [stderr]     |
Dec 12 01:24:07.324 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 12 01:24:07.324 INFO [stderr]     |             ----^^^^
Dec 12 01:24:07.324 INFO [stderr]     |             |
Dec 12 01:24:07.324 INFO [stderr]     |             help: remove this `mut`
Dec 12 01:24:07.324 INFO [stderr]     |
Dec 12 01:24:07.324 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 01:24:07.324 INFO [stderr] 
Dec 12 01:24:07.324 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:24:07.324 INFO [stderr]    --> src/main.rs:120:13
Dec 12 01:24:07.324 INFO [stderr]     |
Dec 12 01:24:07.324 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 12 01:24:07.324 INFO [stderr]     |             ----^^^^
Dec 12 01:24:07.324 INFO [stderr]     |             |
Dec 12 01:24:07.324 INFO [stderr]     |             help: remove this `mut`
Dec 12 01:24:07.324 INFO [stderr] 
Dec 12 01:24:07.332 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:24:07.332 INFO [stderr]    --> src/main.rs:120:13
Dec 12 01:24:07.332 INFO [stderr]     |
Dec 12 01:24:07.332 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 12 01:24:07.332 INFO [stderr]     |             ----^^^^
Dec 12 01:24:07.332 INFO [stderr]     |             |
Dec 12 01:24:07.332 INFO [stderr]     |             help: remove this `mut`
Dec 12 01:24:07.332 INFO [stderr]     |
Dec 12 01:24:07.332 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 01:24:07.332 INFO [stderr] 
Dec 12 01:24:07.332 INFO [stderr] warning: variable does not need to be mutable
Dec 12 01:24:07.332 INFO [stderr]    --> src/main.rs:120:13
Dec 12 01:24:07.332 INFO [stderr]     |
Dec 12 01:24:07.332 INFO [stderr] 120 |         let mut user = users.entry(metadata.uid()).or_insert_with(|| {
Dec 12 01:24:07.332 INFO [stderr]     |             ----^^^^
Dec 12 01:24:07.332 INFO [stderr]     |             |
Dec 12 01:24:07.332 INFO [stderr]     |             help: remove this `mut`
Dec 12 01:24:07.332 INFO [stderr] 
Dec 12 01:24:07.393 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.82s
Dec 12 01:24:07.401 INFO [stderr] su: No module specific data is present
Dec 12 01:24:07.902 INFO running `"docker" "inspect" "a1231d6e44ed1c10b8072fabbb3fcebd11555ad1f2ab067d6913c02f2d379db3"`
Dec 12 01:24:08.150 INFO running `"docker" "rm" "-f" "a1231d6e44ed1c10b8072fabbb3fcebd11555ad1f2ab067d6913c02f2d379db3"`
Dec 12 01:24:08.497 INFO [stdout] a1231d6e44ed1c10b8072fabbb3fcebd11555ad1f2ab067d6913c02f2d379db3