Dec 14 18:51:30.896 INFO testing spectral-0.6.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 18:51:30.896 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 14 18:51:31.435 INFO [stdout] 6bfa9dc8e0162fa7fd1c286d8abeea512656e24e9b68155951bc901507771e59
Dec 14 18:51:31.443 INFO running `"docker" "start" "-a" "6bfa9dc8e0162fa7fd1c286d8abeea512656e24e9b68155951bc901507771e59"`
Dec 14 18:51:33.251 INFO [stderr] usermod: no changes
Dec 14 18:51:33.419 INFO [stderr]    Compiling spectral v0.6.0 (/source)
Dec 14 18:51:35.039 INFO [stderr] warning: variable does not need to be mutable
Dec 14 18:51:35.039 INFO [stderr]    --> src/lib.rs:318:13
Dec 14 18:51:35.039 INFO [stderr]     |
Dec 14 18:51:35.039 INFO [stderr] 318 |         let mut assertion = self;
Dec 14 18:51:35.039 INFO [stderr]     |             ----^^^^^^^^^
Dec 14 18:51:35.039 INFO [stderr]     |             |
Dec 14 18:51:35.039 INFO [stderr]     |             help: remove this `mut`
Dec 14 18:51:35.039 INFO [stderr]     |
Dec 14 18:51:35.039 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 14 18:51:35.039 INFO [stderr] 
Dec 14 18:51:35.039 INFO [stderr] warning: variable does not need to be mutable
Dec 14 18:51:35.039 INFO [stderr]    --> src/lib.rs:326:13
Dec 14 18:51:35.039 INFO [stderr]     |
Dec 14 18:51:35.039 INFO [stderr] 326 |         let mut assertion = self;
Dec 14 18:51:35.039 INFO [stderr]     |             ----^^^^^^^^^
Dec 14 18:51:35.039 INFO [stderr]     |             |
Dec 14 18:51:35.039 INFO [stderr]     |             help: remove this `mut`
Dec 14 18:51:35.039 INFO [stderr] 
Dec 14 18:51:35.601 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
Dec 14 18:51:35.605 INFO [stderr] su: No module specific data is present
Dec 14 18:51:36.272 INFO running `"docker" "inspect" "6bfa9dc8e0162fa7fd1c286d8abeea512656e24e9b68155951bc901507771e59"`
Dec 14 18:51:36.571 INFO running `"docker" "rm" "-f" "6bfa9dc8e0162fa7fd1c286d8abeea512656e24e9b68155951bc901507771e59"`
Dec 14 18:51:36.955 INFO [stdout] 6bfa9dc8e0162fa7fd1c286d8abeea512656e24e9b68155951bc901507771e59
Dec 14 18:51:36.967 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 14 18:51:37.534 INFO [stdout] b4c39d779bfb3831630a076393a9d1768eb46c3d922356e4bc9801eb52f14e38
Dec 14 18:51:37.540 INFO running `"docker" "start" "-a" "b4c39d779bfb3831630a076393a9d1768eb46c3d922356e4bc9801eb52f14e38"`
Dec 14 18:51:39.027 INFO [stderr] usermod: no changes
Dec 14 18:51:39.127 INFO [stderr]    Compiling spectral v0.6.0 (/source)
Dec 14 18:51:40.907 INFO [stderr] warning: variable does not need to be mutable
Dec 14 18:51:40.907 INFO [stderr]    --> src/lib.rs:318:13
Dec 14 18:51:40.907 INFO [stderr]     |
Dec 14 18:51:40.907 INFO [stderr] 318 |         let mut assertion = self;
Dec 14 18:51:40.907 INFO [stderr]     |             ----^^^^^^^^^
Dec 14 18:51:40.907 INFO [stderr]     |             |
Dec 14 18:51:40.907 INFO [stderr]     |             help: remove this `mut`
Dec 14 18:51:40.907 INFO [stderr]     |
Dec 14 18:51:40.907 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 14 18:51:40.907 INFO [stderr] 
Dec 14 18:51:40.907 INFO [stderr] warning: variable does not need to be mutable
Dec 14 18:51:40.907 INFO [stderr]    --> src/lib.rs:326:13
Dec 14 18:51:40.907 INFO [stderr]     |
Dec 14 18:51:40.907 INFO [stderr] 326 |         let mut assertion = self;
Dec 14 18:51:40.907 INFO [stderr]     |             ----^^^^^^^^^
Dec 14 18:51:40.907 INFO [stderr]     |             |
Dec 14 18:51:40.907 INFO [stderr]     |             help: remove this `mut`
Dec 14 18:51:40.907 INFO [stderr] 
Dec 14 18:51:44.459 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.40s
Dec 14 18:51:44.464 INFO [stderr] su: No module specific data is present
Dec 14 18:51:45.095 INFO running `"docker" "inspect" "b4c39d779bfb3831630a076393a9d1768eb46c3d922356e4bc9801eb52f14e38"`
Dec 14 18:51:45.357 INFO running `"docker" "rm" "-f" "b4c39d779bfb3831630a076393a9d1768eb46c3d922356e4bc9801eb52f14e38"`
Dec 14 18:51:45.822 INFO [stdout] b4c39d779bfb3831630a076393a9d1768eb46c3d922356e4bc9801eb52f14e38