Dec 12 17:52:25.467 INFO checking avec-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 17:52:25.467 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 17:52:25.938 INFO [stdout] f84f4b7df7e2112f6a67f70fc0b0d0109707fa9af6aa5b084849528b8bfa4d48
Dec 12 17:52:25.942 INFO running `"docker" "start" "-a" "f84f4b7df7e2112f6a67f70fc0b0d0109707fa9af6aa5b084849528b8bfa4d48"`
Dec 12 17:52:27.324 INFO [stderr] usermod: no changes
Dec 12 17:52:27.368 INFO [stderr]     Checking avec v0.1.0 (/source)
Dec 12 17:52:28.224 INFO [stderr] warning: variable does not need to be mutable
Dec 12 17:52:28.224 INFO [stderr]    --> src/avec.rs:209:17
Dec 12 17:52:28.224 INFO [stderr]     |
Dec 12 17:52:28.224 INFO [stderr] 209 |             let mut data = &mut *self.data.get();
Dec 12 17:52:28.224 INFO [stderr]     |                 ----^^^^
Dec 12 17:52:28.224 INFO [stderr]     |                 |
Dec 12 17:52:28.224 INFO [stderr]     |                 help: remove this `mut`
Dec 12 17:52:28.224 INFO [stderr]     |
Dec 12 17:52:28.224 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 17:52:28.224 INFO [stderr] 
Dec 12 17:52:28.224 INFO [stderr] warning: variable does not need to be mutable
Dec 12 17:52:28.224 INFO [stderr]    --> src/avec.rs:244:17
Dec 12 17:52:28.224 INFO [stderr]     |
Dec 12 17:52:28.224 INFO [stderr] 244 |             let mut data = &mut *self.data.get();
Dec 12 17:52:28.224 INFO [stderr]     |                 ----^^^^
Dec 12 17:52:28.224 INFO [stderr]     |                 |
Dec 12 17:52:28.224 INFO [stderr]     |                 help: remove this `mut`
Dec 12 17:52:28.224 INFO [stderr] 
Dec 12 17:52:28.946 INFO [stderr] warning: variable does not need to be mutable
Dec 12 17:52:28.946 INFO [stderr]    --> src/avec.rs:209:17
Dec 12 17:52:28.946 INFO [stderr]     |
Dec 12 17:52:28.946 INFO [stderr] 209 |             let mut data = &mut *self.data.get();
Dec 12 17:52:28.946 INFO [stderr]     |                 ----^^^^
Dec 12 17:52:28.946 INFO [stderr]     |                 |
Dec 12 17:52:28.946 INFO [stderr]     |                 help: remove this `mut`
Dec 12 17:52:28.948 INFO [stderr]     |
Dec 12 17:52:28.948 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 17:52:28.948 INFO [stderr] 
Dec 12 17:52:28.955 INFO [stderr] warning: variable does not need to be mutable
Dec 12 17:52:28.955 INFO [stderr]    --> src/avec.rs:244:17
Dec 12 17:52:28.955 INFO [stderr]     |
Dec 12 17:52:28.955 INFO [stderr] 244 |             let mut data = &mut *self.data.get();
Dec 12 17:52:28.955 INFO [stderr]     |                 ----^^^^
Dec 12 17:52:28.955 INFO [stderr]     |                 |
Dec 12 17:52:28.955 INFO [stderr]     |                 help: remove this `mut`
Dec 12 17:52:28.955 INFO [stderr] 
Dec 12 17:52:29.555 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
Dec 12 17:52:29.560 INFO [stderr] su: No module specific data is present
Dec 12 17:52:30.594 INFO running `"docker" "inspect" "f84f4b7df7e2112f6a67f70fc0b0d0109707fa9af6aa5b084849528b8bfa4d48"`
Dec 12 17:52:30.992 INFO running `"docker" "rm" "-f" "f84f4b7df7e2112f6a67f70fc0b0d0109707fa9af6aa5b084849528b8bfa4d48"`
Dec 12 17:52:31.353 INFO [stdout] f84f4b7df7e2112f6a67f70fc0b0d0109707fa9af6aa5b084849528b8bfa4d48