Dec 19 14:06:09.878 INFO checking kotokz/tc_tool against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:06:09.879 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/kotokz/tc_tool:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 14:06:10.438 INFO [stdout] 6e0c7e9e83f1cf9d3d29540d13f2a1ada0af58a496a47b0a1cd8b386021d8375
Dec 19 14:06:10.441 INFO running `"docker" "start" "-a" "6e0c7e9e83f1cf9d3d29540d13f2a1ada0af58a496a47b0a1cd8b386021d8375"`
Dec 19 14:06:13.029 INFO [stderr]     Checking clap v2.20.5
Dec 19 14:06:18.865 INFO [stderr]     Checking tc_tool v0.1.0 (/opt/crater/workdir)
Dec 19 14:06:19.688 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:06:19.689 INFO [stderr]   --> src/logresult.rs:56:17
Dec 19 14:06:19.689 INFO [stderr]    |
Dec 19 14:06:19.689 INFO [stderr] 56 |             let mut result = self.0
Dec 19 14:06:19.690 INFO [stderr]    |                 ----^^^^^^
Dec 19 14:06:19.690 INFO [stderr]    |                 |
Dec 19 14:06:19.690 INFO [stderr]    |                 help: remove this `mut`
Dec 19 14:06:19.691 INFO [stderr]    |
Dec 19 14:06:19.691 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 14:06:19.691 INFO [stderr] 
Dec 19 14:06:19.700 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:06:19.701 INFO [stderr]    --> src/logresult.rs:131:13
Dec 19 14:06:19.701 INFO [stderr]     |
Dec 19 14:06:19.701 INFO [stderr] 131 |         let mut result = self.map
Dec 19 14:06:19.702 INFO [stderr]     |             ----^^^^^^
Dec 19 14:06:19.702 INFO [stderr]     |             |
Dec 19 14:06:19.702 INFO [stderr]     |             help: remove this `mut`
Dec 19 14:06:19.702 INFO [stderr] 
Dec 19 14:06:19.732 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:06:19.733 INFO [stderr]   --> src/logresult.rs:56:17
Dec 19 14:06:19.733 INFO [stderr]    |
Dec 19 14:06:19.733 INFO [stderr] 56 |             let mut result = self.0
Dec 19 14:06:19.734 INFO [stderr]    |                 ----^^^^^^
Dec 19 14:06:19.734 INFO [stderr]    |                 |
Dec 19 14:06:19.734 INFO [stderr]    |                 help: remove this `mut`
Dec 19 14:06:19.735 INFO [stderr]    |
Dec 19 14:06:19.735 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 14:06:19.735 INFO [stderr] 
Dec 19 14:06:19.760 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:06:19.761 INFO [stderr]    --> src/logresult.rs:131:13
Dec 19 14:06:19.761 INFO [stderr]     |
Dec 19 14:06:19.761 INFO [stderr] 131 |         let mut result = self.map
Dec 19 14:06:19.762 INFO [stderr]     |             ----^^^^^^
Dec 19 14:06:19.762 INFO [stderr]     |             |
Dec 19 14:06:19.762 INFO [stderr]     |             help: remove this `mut`
Dec 19 14:06:19.762 INFO [stderr] 
Dec 19 14:06:19.942 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.08s
Dec 19 14:06:21.464 INFO running `"docker" "inspect" "6e0c7e9e83f1cf9d3d29540d13f2a1ada0af58a496a47b0a1cd8b386021d8375"`
Dec 19 14:06:21.728 INFO running `"docker" "rm" "-f" "6e0c7e9e83f1cf9d3d29540d13f2a1ada0af58a496a47b0a1cd8b386021d8375"`
Dec 19 14:06:22.079 INFO [stdout] 6e0c7e9e83f1cf9d3d29540d13f2a1ada0af58a496a47b0a1cd8b386021d8375