Dec 18 11:05:55.628 INFO checking smetamath-3.0.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 11:05:55.629 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/smetamath/3.0.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 11:05:56.120 INFO [stdout] a40c6f83f72ba0664b865851e93230ddaefab6ea51a11dcdeb732a408f0039c5
Dec 18 11:05:56.122 INFO running `"docker" "start" "-a" "a40c6f83f72ba0664b865851e93230ddaefab6ea51a11dcdeb732a408f0039c5"`
Dec 18 11:05:58.540 INFO [stderr]    Compiling libc v0.2.45
Dec 18 11:05:58.540 INFO [stderr]     Checking unicode-width v0.1.5
Dec 18 11:05:58.540 INFO [stderr]     Checking bitflags v1.0.4
Dec 18 11:05:58.540 INFO [stderr]     Checking cfg-if v0.1.6
Dec 18 11:05:58.540 INFO [stderr]     Checking strsim v0.7.0
Dec 18 11:05:58.540 INFO [stderr]     Checking vec_map v0.8.1
Dec 18 11:05:58.540 INFO [stderr]     Checking ansi_term v0.11.0
Dec 18 11:05:58.540 INFO [stderr]     Checking fnv v1.0.6
Dec 18 11:06:00.004 INFO [stderr]     Checking textwrap v0.10.0
Dec 18 11:06:03.804 INFO [stderr]     Checking atty v0.2.11
Dec 18 11:06:03.804 INFO [stderr]     Checking filetime v0.1.15
Dec 18 11:06:04.344 INFO [stderr]     Checking clap v2.32.0
Dec 18 11:06:09.442 INFO [stderr]     Checking smetamath v3.0.0 (/opt/crater/workdir)
Dec 18 11:06:11.476 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.477 INFO [stderr]    --> src/database.rs:247:25
Dec 18 11:06:11.477 INFO [stderr]     |
Dec 18 11:06:11.477 INFO [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Dec 18 11:06:11.477 INFO [stderr]     |                         ----^^
Dec 18 11:06:11.477 INFO [stderr]     |                         |
Dec 18 11:06:11.477 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.477 INFO [stderr]     |
Dec 18 11:06:11.477 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:06:11.477 INFO [stderr] 
Dec 18 11:06:11.477 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.477 INFO [stderr]    --> src/database.rs:247:25
Dec 18 11:06:11.477 INFO [stderr]     |
Dec 18 11:06:11.477 INFO [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Dec 18 11:06:11.478 INFO [stderr]     |                         ----^^
Dec 18 11:06:11.478 INFO [stderr]     |                         |
Dec 18 11:06:11.478 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.478 INFO [stderr] 
Dec 18 11:06:11.478 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.478 INFO [stderr]    --> src/database.rs:268:25
Dec 18 11:06:11.478 INFO [stderr]     |
Dec 18 11:06:11.478 INFO [stderr] 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
Dec 18 11:06:11.478 INFO [stderr]     |                         ----^^
Dec 18 11:06:11.478 INFO [stderr]     |                         |
Dec 18 11:06:11.478 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.478 INFO [stderr] 
Dec 18 11:06:11.480 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.480 INFO [stderr]    --> src/database.rs:291:25
Dec 18 11:06:11.480 INFO [stderr]     |
Dec 18 11:06:11.480 INFO [stderr] 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
Dec 18 11:06:11.480 INFO [stderr]     |                         ----^^^
Dec 18 11:06:11.480 INFO [stderr]     |                         |
Dec 18 11:06:11.480 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.480 INFO [stderr] 
Dec 18 11:06:11.502 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.502 INFO [stderr]    --> src/database.rs:247:25
Dec 18 11:06:11.502 INFO [stderr]     |
Dec 18 11:06:11.502 INFO [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Dec 18 11:06:11.502 INFO [stderr]     |                         ----^^
Dec 18 11:06:11.502 INFO [stderr]     |                         |
Dec 18 11:06:11.502 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.502 INFO [stderr]     |
Dec 18 11:06:11.502 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:06:11.502 INFO [stderr] 
Dec 18 11:06:11.502 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.502 INFO [stderr]    --> src/database.rs:247:25
Dec 18 11:06:11.502 INFO [stderr]     |
Dec 18 11:06:11.502 INFO [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
Dec 18 11:06:11.502 INFO [stderr]     |                         ----^^
Dec 18 11:06:11.502 INFO [stderr]     |                         |
Dec 18 11:06:11.502 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.503 INFO [stderr] 
Dec 18 11:06:11.504 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.504 INFO [stderr]    --> src/database.rs:268:25
Dec 18 11:06:11.504 INFO [stderr]     |
Dec 18 11:06:11.504 INFO [stderr] 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
Dec 18 11:06:11.504 INFO [stderr]     |                         ----^^
Dec 18 11:06:11.504 INFO [stderr]     |                         |
Dec 18 11:06:11.505 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.505 INFO [stderr] 
Dec 18 11:06:11.506 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:06:11.506 INFO [stderr]    --> src/database.rs:291:25
Dec 18 11:06:11.506 INFO [stderr]     |
Dec 18 11:06:11.506 INFO [stderr] 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
Dec 18 11:06:11.506 INFO [stderr]     |                         ----^^^
Dec 18 11:06:11.506 INFO [stderr]     |                         |
Dec 18 11:06:11.506 INFO [stderr]     |                         help: remove this `mut`
Dec 18 11:06:11.507 INFO [stderr] 
Dec 18 11:06:12.145 INFO [stderr]     Finished dev [optimized + debuginfo] target(s) in 13.68s
Dec 18 11:06:13.511 INFO running `"docker" "inspect" "a40c6f83f72ba0664b865851e93230ddaefab6ea51a11dcdeb732a408f0039c5"`
Dec 18 11:06:13.882 INFO running `"docker" "rm" "-f" "a40c6f83f72ba0664b865851e93230ddaefab6ea51a11dcdeb732a408f0039c5"`
Dec 18 11:06:14.156 INFO [stdout] a40c6f83f72ba0664b865851e93230ddaefab6ea51a11dcdeb732a408f0039c5