Dec 12 12:21:15.419 INFO checking ktm5e-dice-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 12:21:15.420 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 12:21:15.668 INFO [stdout] 1ab2707c81c526c3ea3665e397cef0bf99a6f849ebbff1b21c6350ae42743be3
Dec 12 12:21:15.674 INFO running `"docker" "start" "-a" "1ab2707c81c526c3ea3665e397cef0bf99a6f849ebbff1b21c6350ae42743be3"`
Dec 12 12:21:16.539 INFO [stderr] usermod: no changes
Dec 12 12:21:16.625 INFO [stderr]     Checking microbench v0.3.3
Dec 12 12:21:16.636 INFO [stderr]     Checking ktm5e-dice v0.1.0 (/source)
Dec 12 12:21:18.332 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:21:18.332 INFO [stderr]   --> src/syntax/mod.rs:59:19
Dec 12 12:21:18.332 INFO [stderr]    |
Dec 12 12:21:18.332 INFO [stderr] 59 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
Dec 12 12:21:18.332 INFO [stderr]    |                   ----^^^^^^^^^
Dec 12 12:21:18.332 INFO [stderr]    |                   |
Dec 12 12:21:18.332 INFO [stderr]    |                   help: remove this `mut`
Dec 12 12:21:18.332 INFO [stderr]    |
Dec 12 12:21:18.332 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 12:21:18.332 INFO [stderr] 
Dec 12 12:21:18.332 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:21:18.332 INFO [stderr]   --> src/syntax/mod.rs:84:19
Dec 12 12:21:18.332 INFO [stderr]    |
Dec 12 12:21:18.332 INFO [stderr] 84 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
Dec 12 12:21:18.332 INFO [stderr]    |                   ----^^^^^^^^^
Dec 12 12:21:18.332 INFO [stderr]    |                   |
Dec 12 12:21:18.332 INFO [stderr]    |                   help: remove this `mut`
Dec 12 12:21:18.332 INFO [stderr] 
Dec 12 12:21:18.364 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 12 12:21:18.364 INFO [stderr]   --> src/lib.rs:17:12
Dec 12 12:21:18.364 INFO [stderr]    |
Dec 12 12:21:18.364 INFO [stderr] 17 | #![feature(conservative_impl_trait, i128_type)]
Dec 12 12:21:18.364 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 12:21:18.364 INFO [stderr]    |
Dec 12 12:21:18.364 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 12 12:21:18.364 INFO [stderr] 
Dec 12 12:21:18.364 INFO [stderr] warning: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 12 12:21:18.364 INFO [stderr]   --> src/lib.rs:17:37
Dec 12 12:21:18.364 INFO [stderr]    |
Dec 12 12:21:18.364 INFO [stderr] 17 | #![feature(conservative_impl_trait, i128_type)]
Dec 12 12:21:18.364 INFO [stderr]    |                                     ^^^^^^^^^
Dec 12 12:21:18.364 INFO [stderr] 
Dec 12 12:21:18.762 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:21:18.763 INFO [stderr]   --> src/syntax/mod.rs:59:19
Dec 12 12:21:18.763 INFO [stderr]    |
Dec 12 12:21:18.763 INFO [stderr] 59 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
Dec 12 12:21:18.763 INFO [stderr]    |                   ----^^^^^^^^^
Dec 12 12:21:18.763 INFO [stderr]    |                   |
Dec 12 12:21:18.764 INFO [stderr]    |                   help: remove this `mut`
Dec 12 12:21:18.764 INFO [stderr]    |
Dec 12 12:21:18.764 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 12:21:18.764 INFO [stderr] 
Dec 12 12:21:18.767 INFO [stderr] warning: variable does not need to be mutable
Dec 12 12:21:18.767 INFO [stderr]   --> src/syntax/mod.rs:84:19
Dec 12 12:21:18.767 INFO [stderr]    |
Dec 12 12:21:18.768 INFO [stderr] 84 |     fn fmt(&self, mut formatter: &mut fmt::Formatter) -> fmt::Result {
Dec 12 12:21:18.768 INFO [stderr]    |                   ----^^^^^^^^^
Dec 12 12:21:18.768 INFO [stderr]    |                   |
Dec 12 12:21:18.768 INFO [stderr]    |                   help: remove this `mut`
Dec 12 12:21:18.768 INFO [stderr] 
Dec 12 12:21:18.791 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 12 12:21:18.791 INFO [stderr]   --> src/lib.rs:17:12
Dec 12 12:21:18.792 INFO [stderr]    |
Dec 12 12:21:18.792 INFO [stderr] 17 | #![feature(conservative_impl_trait, i128_type)]
Dec 12 12:21:18.792 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 12:21:18.792 INFO [stderr]    |
Dec 12 12:21:18.793 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 12 12:21:18.793 INFO [stderr] 
Dec 12 12:21:18.793 INFO [stderr] warning: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 12 12:21:18.793 INFO [stderr]   --> src/lib.rs:17:37
Dec 12 12:21:18.794 INFO [stderr]    |
Dec 12 12:21:18.794 INFO [stderr] 17 | #![feature(conservative_impl_trait, i128_type)]
Dec 12 12:21:18.794 INFO [stderr]    |                                     ^^^^^^^^^
Dec 12 12:21:18.794 INFO [stderr] 
Dec 12 12:21:21.069 INFO [stderr] warning: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 12 12:21:21.069 INFO [stderr]   --> tests/statistics.rs:15:12
Dec 12 12:21:21.069 INFO [stderr]    |
Dec 12 12:21:21.069 INFO [stderr] 15 | #![feature(i128_type)]
Dec 12 12:21:21.069 INFO [stderr]    |            ^^^^^^^^^
Dec 12 12:21:21.069 INFO [stderr]    |
Dec 12 12:21:21.069 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 12 12:21:21.069 INFO [stderr] 
Dec 12 12:21:21.120 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.53s
Dec 12 12:21:21.120 INFO [stderr] su: No module specific data is present
Dec 12 12:21:21.639 INFO running `"docker" "inspect" "1ab2707c81c526c3ea3665e397cef0bf99a6f849ebbff1b21c6350ae42743be3"`
Dec 12 12:21:21.844 INFO running `"docker" "rm" "-f" "1ab2707c81c526c3ea3665e397cef0bf99a6f849ebbff1b21c6350ae42743be3"`
Dec 12 12:21:22.019 INFO [stdout] 1ab2707c81c526c3ea3665e397cef0bf99a6f849ebbff1b21c6350ae42743be3