Sep 04 02:50:34.730 INFO checking smetamath-3.0.0 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 02:50:34.730 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 02:50:34.730 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 02:50:34.954 INFO blam! b070e836bd915710f2ec61a61606357e08180f0513dea7a88ad8cdd4be2a3be1
Sep 04 02:50:34.956 INFO running `"docker" "start" "-a" "b070e836bd915710f2ec61a61606357e08180f0513dea7a88ad8cdd4be2a3be1"`
Sep 04 02:50:35.848 INFO kablam!     Checking libc v0.2.43
Sep 04 02:50:35.848 INFO kablam!     Checking unicode-width v0.1.5
Sep 04 02:50:35.848 INFO kablam!     Checking cfg-if v0.1.5
Sep 04 02:50:35.848 INFO kablam!     Checking vec_map v0.8.1
Sep 04 02:50:35.848 INFO kablam!     Checking bitflags v1.0.4
Sep 04 02:50:35.848 INFO kablam!     Checking strsim v0.7.0
Sep 04 02:50:35.848 INFO kablam!     Checking ansi_term v0.11.0
Sep 04 02:50:35.849 INFO kablam!     Checking fnv v1.0.6
Sep 04 02:50:36.586 INFO kablam!     Checking textwrap v0.10.0
Sep 04 02:50:39.298 INFO kablam!     Checking atty v0.2.11
Sep 04 02:50:39.299 INFO kablam!     Checking filetime v0.1.15
Sep 04 02:50:39.871 INFO kablam!     Checking clap v2.32.0
Sep 04 02:50:46.810 INFO kablam!     Checking smetamath v3.0.0 (file:///source)
Sep 04 02:50:49.035 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.035 INFO kablam!    --> src/database.rs:247:25
Sep 04 02:50:49.035 INFO kablam!     |
Sep 04 02:50:49.035 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Sep 04 02:50:49.035 INFO kablam!     |                         ----^^
Sep 04 02:50:49.035 INFO kablam!     |                         |
Sep 04 02:50:49.035 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.035 INFO kablam!     |
Sep 04 02:50:49.035 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 04 02:50:49.035 INFO kablam! 
Sep 04 02:50:49.035 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.035 INFO kablam!    --> src/database.rs:247:25
Sep 04 02:50:49.035 INFO kablam!     |
Sep 04 02:50:49.035 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Sep 04 02:50:49.035 INFO kablam!     |                         ----^^
Sep 04 02:50:49.035 INFO kablam!     |                         |
Sep 04 02:50:49.035 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.035 INFO kablam! 
Sep 04 02:50:49.038 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.038 INFO kablam!    --> src/database.rs:268:25
Sep 04 02:50:49.038 INFO kablam!     |
Sep 04 02:50:49.038 INFO kablam! 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
Sep 04 02:50:49.039 INFO kablam!     |                         ----^^
Sep 04 02:50:49.039 INFO kablam!     |                         |
Sep 04 02:50:49.039 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.039 INFO kablam! 
Sep 04 02:50:49.043 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.043 INFO kablam!    --> src/database.rs:291:25
Sep 04 02:50:49.043 INFO kablam!     |
Sep 04 02:50:49.043 INFO kablam! 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
Sep 04 02:50:49.043 INFO kablam!     |                         ----^^^
Sep 04 02:50:49.043 INFO kablam!     |                         |
Sep 04 02:50:49.043 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.043 INFO kablam! 
Sep 04 02:50:49.479 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.480 INFO kablam!    --> src/database.rs:247:25
Sep 04 02:50:49.480 INFO kablam!     |
Sep 04 02:50:49.480 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Sep 04 02:50:49.480 INFO kablam!     |                         ----^^
Sep 04 02:50:49.480 INFO kablam!     |                         |
Sep 04 02:50:49.480 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.480 INFO kablam!     |
Sep 04 02:50:49.480 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 04 02:50:49.480 INFO kablam! 
Sep 04 02:50:49.480 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.480 INFO kablam!    --> src/database.rs:247:25
Sep 04 02:50:49.480 INFO kablam!     |
Sep 04 02:50:49.480 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Sep 04 02:50:49.480 INFO kablam!     |                         ----^^
Sep 04 02:50:49.480 INFO kablam!     |                         |
Sep 04 02:50:49.480 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.480 INFO kablam! 
Sep 04 02:50:49.483 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.484 INFO kablam!    --> src/database.rs:268:25
Sep 04 02:50:49.484 INFO kablam!     |
Sep 04 02:50:49.484 INFO kablam! 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
Sep 04 02:50:49.484 INFO kablam!     |                         ----^^
Sep 04 02:50:49.484 INFO kablam!     |                         |
Sep 04 02:50:49.484 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.484 INFO kablam! 
Sep 04 02:50:49.488 INFO kablam! warning: variable does not need to be mutable
Sep 04 02:50:49.488 INFO kablam!    --> src/database.rs:291:25
Sep 04 02:50:49.488 INFO kablam!     |
Sep 04 02:50:49.488 INFO kablam! 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
Sep 04 02:50:49.488 INFO kablam!     |                         ----^^^
Sep 04 02:50:49.488 INFO kablam!     |                         |
Sep 04 02:50:49.488 INFO kablam!     |                         help: remove this `mut`
Sep 04 02:50:49.488 INFO kablam! 
Sep 04 02:50:50.021 INFO kablam!     Finished dev [optimized + debuginfo] target(s) in 14.23s
Sep 04 02:50:50.026 INFO kablam! su: No module specific data is present
Sep 04 02:50:50.431 INFO running `"docker" "rm" "-f" "b070e836bd915710f2ec61a61606357e08180f0513dea7a88ad8cdd4be2a3be1"`
Sep 04 02:50:50.524 INFO blam! b070e836bd915710f2ec61a61606357e08180f0513dea7a88ad8cdd4be2a3be1