Dec 12 07:06:33.096 INFO checking spectral-0.6.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:06:33.096 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 07:06:33.588 INFO [stdout] 73ff216a596b9a40a1fe462514a40d93ea8e2057ed404c2b835f32413e41b41a
Dec 12 07:06:33.590 INFO running `"docker" "start" "-a" "73ff216a596b9a40a1fe462514a40d93ea8e2057ed404c2b835f32413e41b41a"`
Dec 12 07:06:35.220 INFO [stderr] usermod: no changes
Dec 12 07:06:35.329 INFO [stderr]     Checking spectral v0.6.0 (/source)
Dec 12 07:06:37.804 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:06:37.804 INFO [stderr]    --> src/lib.rs:318:13
Dec 12 07:06:37.804 INFO [stderr]     |
Dec 12 07:06:37.804 INFO [stderr] 318 |         let mut assertion = self;
Dec 12 07:06:37.804 INFO [stderr]     |             ----^^^^^^^^^
Dec 12 07:06:37.804 INFO [stderr]     |             |
Dec 12 07:06:37.804 INFO [stderr]     |             help: remove this `mut`
Dec 12 07:06:37.804 INFO [stderr]     |
Dec 12 07:06:37.804 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 07:06:37.804 INFO [stderr] 
Dec 12 07:06:37.804 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:06:37.804 INFO [stderr]    --> src/lib.rs:326:13
Dec 12 07:06:37.804 INFO [stderr]     |
Dec 12 07:06:37.804 INFO [stderr] 326 |         let mut assertion = self;
Dec 12 07:06:37.804 INFO [stderr]     |             ----^^^^^^^^^
Dec 12 07:06:37.804 INFO [stderr]     |             |
Dec 12 07:06:37.804 INFO [stderr]     |             help: remove this `mut`
Dec 12 07:06:37.804 INFO [stderr] 
Dec 12 07:06:37.972 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:06:37.972 INFO [stderr]    --> src/lib.rs:318:13
Dec 12 07:06:37.972 INFO [stderr]     |
Dec 12 07:06:37.972 INFO [stderr] 318 |         let mut assertion = self;
Dec 12 07:06:37.972 INFO [stderr]     |             ----^^^^^^^^^
Dec 12 07:06:37.972 INFO [stderr]     |             |
Dec 12 07:06:37.972 INFO [stderr]     |             help: remove this `mut`
Dec 12 07:06:37.972 INFO [stderr]     |
Dec 12 07:06:37.972 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 07:06:37.972 INFO [stderr] 
Dec 12 07:06:37.972 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:06:37.972 INFO [stderr]    --> src/lib.rs:326:13
Dec 12 07:06:37.972 INFO [stderr]     |
Dec 12 07:06:37.972 INFO [stderr] 326 |         let mut assertion = self;
Dec 12 07:06:37.972 INFO [stderr]     |             ----^^^^^^^^^
Dec 12 07:06:37.972 INFO [stderr]     |             |
Dec 12 07:06:37.972 INFO [stderr]     |             help: remove this `mut`
Dec 12 07:06:37.972 INFO [stderr] 
Dec 12 07:06:38.529 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.28s
Dec 12 07:06:38.533 INFO [stderr] su: No module specific data is present
Dec 12 07:06:39.916 INFO running `"docker" "inspect" "73ff216a596b9a40a1fe462514a40d93ea8e2057ed404c2b835f32413e41b41a"`
Dec 12 07:06:40.326 INFO running `"docker" "rm" "-f" "73ff216a596b9a40a1fe462514a40d93ea8e2057ed404c2b835f32413e41b41a"`
Dec 12 07:06:40.604 INFO [stdout] 73ff216a596b9a40a1fe462514a40d93ea8e2057ed404c2b835f32413e41b41a