Oct 13 08:21:27.723 INFO checking smetamath-3.0.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 08:21:27.725 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 08:21:28.217 INFO blam! ff6a9b2127d1fbf681672fe4dd8c9a1fcbcd945b9b255b65ba66860b3de3b6b0
Oct 13 08:21:28.221 INFO running `"docker" "start" "-a" "ff6a9b2127d1fbf681672fe4dd8c9a1fcbcd945b9b255b65ba66860b3de3b6b0"`
Oct 13 08:21:29.988 INFO kablam! usermod: no changes
Oct 13 08:21:30.103 INFO kablam!     Checking unicode-width v0.1.5
Oct 13 08:21:30.152 INFO kablam!     Checking libc v0.2.43
Oct 13 08:21:30.154 INFO kablam!     Checking bitflags v1.0.4
Oct 13 08:21:30.154 INFO kablam!     Checking vec_map v0.8.1
Oct 13 08:21:30.156 INFO kablam!     Checking ansi_term v0.11.0
Oct 13 08:21:30.157 INFO kablam!     Checking cfg-if v0.1.5
Oct 13 08:21:30.159 INFO kablam!     Checking strsim v0.7.0
Oct 13 08:21:30.165 INFO kablam!     Checking fnv v1.0.6
Oct 13 08:21:31.196 INFO kablam!     Checking textwrap v0.10.0
Oct 13 08:21:35.420 INFO kablam!     Checking atty v0.2.11
Oct 13 08:21:35.421 INFO kablam!     Checking filetime v0.1.15
Oct 13 08:21:36.384 INFO kablam!     Checking clap v2.32.0
Oct 13 08:21:41.875 INFO kablam!     Checking smetamath v3.0.0 (/source)
Oct 13 08:21:45.580 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.580 INFO kablam!    --> src/database.rs:247:25
Oct 13 08:21:45.581 INFO kablam!     |
Oct 13 08:21:45.582 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Oct 13 08:21:45.582 INFO kablam!     |                         ----^^
Oct 13 08:21:45.583 INFO kablam!     |                         |
Oct 13 08:21:45.583 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.584 INFO kablam!     |
Oct 13 08:21:45.585 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 08:21:45.585 INFO kablam! 
Oct 13 08:21:45.588 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.589 INFO kablam!    --> src/database.rs:247:25
Oct 13 08:21:45.589 INFO kablam!     |
Oct 13 08:21:45.590 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Oct 13 08:21:45.591 INFO kablam!     |                         ----^^
Oct 13 08:21:45.591 INFO kablam!     |                         |
Oct 13 08:21:45.592 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.592 INFO kablam! 
Oct 13 08:21:45.593 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.594 INFO kablam!    --> src/database.rs:268:25
Oct 13 08:21:45.594 INFO kablam!     |
Oct 13 08:21:45.595 INFO kablam! 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
Oct 13 08:21:45.595 INFO kablam!     |                         ----^^
Oct 13 08:21:45.596 INFO kablam!     |                         |
Oct 13 08:21:45.597 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.597 INFO kablam! 
Oct 13 08:21:45.598 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.599 INFO kablam!    --> src/database.rs:291:25
Oct 13 08:21:45.599 INFO kablam!     |
Oct 13 08:21:45.599 INFO kablam! 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
Oct 13 08:21:45.599 INFO kablam!     |                         ----^^^
Oct 13 08:21:45.599 INFO kablam!     |                         |
Oct 13 08:21:45.599 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.599 INFO kablam! 
Oct 13 08:21:45.945 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.945 INFO kablam!    --> src/database.rs:247:25
Oct 13 08:21:45.945 INFO kablam!     |
Oct 13 08:21:45.945 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Oct 13 08:21:45.945 INFO kablam!     |                         ----^^
Oct 13 08:21:45.945 INFO kablam!     |                         |
Oct 13 08:21:45.945 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.945 INFO kablam!     |
Oct 13 08:21:45.947 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 08:21:45.947 INFO kablam! 
Oct 13 08:21:45.947 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.947 INFO kablam!    --> src/database.rs:247:25
Oct 13 08:21:45.947 INFO kablam!     |
Oct 13 08:21:45.947 INFO kablam! 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Oct 13 08:21:45.947 INFO kablam!     |                         ----^^
Oct 13 08:21:45.947 INFO kablam!     |                         |
Oct 13 08:21:45.947 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.947 INFO kablam! 
Oct 13 08:21:45.947 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.947 INFO kablam!    --> src/database.rs:268:25
Oct 13 08:21:45.947 INFO kablam!     |
Oct 13 08:21:45.947 INFO kablam! 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
Oct 13 08:21:45.947 INFO kablam!     |                         ----^^
Oct 13 08:21:45.947 INFO kablam!     |                         |
Oct 13 08:21:45.947 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.947 INFO kablam! 
Oct 13 08:21:45.950 INFO kablam! warning: variable does not need to be mutable
Oct 13 08:21:45.950 INFO kablam!    --> src/database.rs:291:25
Oct 13 08:21:45.950 INFO kablam!     |
Oct 13 08:21:45.950 INFO kablam! 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
Oct 13 08:21:45.950 INFO kablam!     |                         ----^^^
Oct 13 08:21:45.950 INFO kablam!     |                         |
Oct 13 08:21:45.950 INFO kablam!     |                         help: remove this `mut`
Oct 13 08:21:45.950 INFO kablam! 
Oct 13 08:21:46.586 INFO kablam!     Finished dev [optimized + debuginfo] target(s) in 16.55s
Oct 13 08:21:46.597 INFO kablam! su: No module specific data is present
Oct 13 08:21:48.311 INFO running `"docker" "rm" "-f" "ff6a9b2127d1fbf681672fe4dd8c9a1fcbcd945b9b255b65ba66860b3de3b6b0"`
Oct 13 08:21:48.604 INFO blam! ff6a9b2127d1fbf681672fe4dd8c9a1fcbcd945b9b255b65ba66860b3de3b6b0