Dec 12 06:26:36.596 INFO checking tensor-0.1.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 06:26:36.596 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 06:26:36.986 INFO [stdout] cabb5eaa050721b449a25bc39bb6c377d748088942c5bc46e96dda13e580c6e7
Dec 12 06:26:36.988 INFO running `"docker" "start" "-a" "cabb5eaa050721b449a25bc39bb6c377d748088942c5bc46e96dda13e580c6e7"`
Dec 12 06:26:39.117 INFO [stderr] usermod: no changes
Dec 12 06:26:39.232 INFO [stderr]     Checking tensor v0.1.2 (/source)
Dec 12 06:26:40.828 INFO [stderr] warning: variable does not need to be mutable
Dec 12 06:26:40.828 INFO [stderr]   --> src/tensor.rs:67:13
Dec 12 06:26:40.828 INFO [stderr]    |
Dec 12 06:26:40.828 INFO [stderr] 67 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
Dec 12 06:26:40.828 INFO [stderr]    |             ----^^^^^^^^^^
Dec 12 06:26:40.828 INFO [stderr]    |             |
Dec 12 06:26:40.828 INFO [stderr]    |             help: remove this `mut`
Dec 12 06:26:40.828 INFO [stderr]    |
Dec 12 06:26:40.828 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 06:26:40.828 INFO [stderr] 
Dec 12 06:26:41.028 INFO [stderr] warning: variable does not need to be mutable
Dec 12 06:26:41.028 INFO [stderr]   --> src/tensor.rs:67:13
Dec 12 06:26:41.028 INFO [stderr]    |
Dec 12 06:26:41.028 INFO [stderr] 67 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
Dec 12 06:26:41.028 INFO [stderr]    |             ----^^^^^^^^^^
Dec 12 06:26:41.028 INFO [stderr]    |             |
Dec 12 06:26:41.028 INFO [stderr]    |             help: remove this `mut`
Dec 12 06:26:41.028 INFO [stderr]    |
Dec 12 06:26:41.028 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 06:26:41.028 INFO [stderr] 
Dec 12 06:26:42.892 INFO [stderr] warning: variable does not need to be mutable
Dec 12 06:26:42.892 INFO [stderr]   --> src/tensor.rs:67:13
Dec 12 06:26:42.892 INFO [stderr]    |
Dec 12 06:26:42.892 INFO [stderr] 67 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
Dec 12 06:26:42.892 INFO [stderr]    |             ----^^^^^^^^^^
Dec 12 06:26:42.892 INFO [stderr]    |             |
Dec 12 06:26:42.892 INFO [stderr]    |             help: remove this `mut`
Dec 12 06:26:42.892 INFO [stderr]    |
Dec 12 06:26:42.892 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 06:26:42.892 INFO [stderr] 
Dec 12 06:26:43.316 INFO [stderr] warning: variable does not need to be mutable
Dec 12 06:26:43.316 INFO [stderr]   --> src/tensor.rs:67:13
Dec 12 06:26:43.316 INFO [stderr]    |
Dec 12 06:26:43.316 INFO [stderr] 67 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
Dec 12 06:26:43.316 INFO [stderr]    |             ----^^^^^^^^^^
Dec 12 06:26:43.316 INFO [stderr]    |             |
Dec 12 06:26:43.316 INFO [stderr]    |             help: remove this `mut`
Dec 12 06:26:43.316 INFO [stderr]    |
Dec 12 06:26:43.316 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 06:26:43.316 INFO [stderr] 
Dec 12 06:26:43.381 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.24s
Dec 12 06:26:43.397 INFO [stderr] su: No module specific data is present
Dec 12 06:26:44.826 INFO running `"docker" "inspect" "cabb5eaa050721b449a25bc39bb6c377d748088942c5bc46e96dda13e580c6e7"`
Dec 12 06:26:45.174 INFO running `"docker" "rm" "-f" "cabb5eaa050721b449a25bc39bb6c377d748088942c5bc46e96dda13e580c6e7"`
Dec 12 06:26:45.564 INFO [stdout] cabb5eaa050721b449a25bc39bb6c377d748088942c5bc46e96dda13e580c6e7