Dec 18 06:40:16.569 INFO checking LukeThoma5/rs-solitaire against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:40:16.569 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/LukeThoma5/rs-solitaire:/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 06:40:17.196 INFO [stdout] ddf81c3c04242e73af55c3521d70ef986fcdaa27bf7e0fd26f74aa7c17acafa4
Dec 18 06:40:17.200 INFO running `"docker" "start" "-a" "ddf81c3c04242e73af55c3521d70ef986fcdaa27bf7e0fd26f74aa7c17acafa4"`
Dec 18 06:40:18.904 INFO [stderr]     Checking rand v0.5.0
Dec 18 06:40:21.328 INFO [stderr]     Checking solataire v0.1.0 (/opt/crater/workdir)
Dec 18 06:40:22.176 INFO [stderr] warning: unused variable: `x`
Dec 18 06:40:22.176 INFO [stderr]   --> src/main.rs:34:13
Dec 18 06:40:22.176 INFO [stderr]    |
Dec 18 06:40:22.176 INFO [stderr] 34 |     fn from(x: std::option::NoneError) -> GameError {
Dec 18 06:40:22.176 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 06:40:22.176 INFO [stderr]    |
Dec 18 06:40:22.176 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 06:40:22.176 INFO [stderr] 
Dec 18 06:40:22.176 INFO [stderr] warning: unused variable: `x`
Dec 18 06:40:22.176 INFO [stderr]   --> src/main.rs:40:13
Dec 18 06:40:22.176 INFO [stderr]    |
Dec 18 06:40:22.176 INFO [stderr] 40 |     fn from(x: std::num::ParseIntError) -> GameError {
Dec 18 06:40:22.176 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 06:40:22.176 INFO [stderr] 
Dec 18 06:40:22.176 INFO [stderr] warning: unused variable: `x`
Dec 18 06:40:22.176 INFO [stderr]   --> src/main.rs:46:13
Dec 18 06:40:22.176 INFO [stderr]    |
Dec 18 06:40:22.176 INFO [stderr] 46 |     fn from(x: std::io::Error) -> GameError {
Dec 18 06:40:22.176 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 06:40:22.176 INFO [stderr] 
Dec 18 06:40:22.212 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:40:22.212 INFO [stderr]    --> src/main.rs:166:31
Dec 18 06:40:22.212 INFO [stderr]     |
Dec 18 06:40:22.212 INFO [stderr] 166 |         let (mut move_column, mut destination_column) = match (move_column, destination_column) {
Dec 18 06:40:22.212 INFO [stderr]     |                               ----^^^^^^^^^^^^^^^^^^
Dec 18 06:40:22.212 INFO [stderr]     |                               |
Dec 18 06:40:22.212 INFO [stderr]     |                               help: remove this `mut`
Dec 18 06:40:22.212 INFO [stderr]     |
Dec 18 06:40:22.212 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 06:40:22.212 INFO [stderr] 
Dec 18 06:40:22.212 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:40:22.212 INFO [stderr]    --> src/main.rs:166:14
Dec 18 06:40:22.212 INFO [stderr]     |
Dec 18 06:40:22.212 INFO [stderr] 166 |         let (mut move_column, mut destination_column) = match (move_column, destination_column) {
Dec 18 06:40:22.212 INFO [stderr]     |              ----^^^^^^^^^^^
Dec 18 06:40:22.212 INFO [stderr]     |              |
Dec 18 06:40:22.212 INFO [stderr]     |              help: remove this `mut`
Dec 18 06:40:22.212 INFO [stderr] 
Dec 18 06:40:22.216 INFO [stderr] warning: unused variable: `x`
Dec 18 06:40:22.216 INFO [stderr]   --> src/main.rs:34:13
Dec 18 06:40:22.216 INFO [stderr]    |
Dec 18 06:40:22.216 INFO [stderr] 34 |     fn from(x: std::option::NoneError) -> GameError {
Dec 18 06:40:22.216 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 06:40:22.216 INFO [stderr]    |
Dec 18 06:40:22.216 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 06:40:22.216 INFO [stderr] 
Dec 18 06:40:22.216 INFO [stderr] warning: unused variable: `x`
Dec 18 06:40:22.216 INFO [stderr]   --> src/main.rs:40:13
Dec 18 06:40:22.216 INFO [stderr]    |
Dec 18 06:40:22.216 INFO [stderr] 40 |     fn from(x: std::num::ParseIntError) -> GameError {
Dec 18 06:40:22.216 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 06:40:22.216 INFO [stderr] 
Dec 18 06:40:22.216 INFO [stderr] warning: unused variable: `x`
Dec 18 06:40:22.216 INFO [stderr]   --> src/main.rs:46:13
Dec 18 06:40:22.216 INFO [stderr]    |
Dec 18 06:40:22.216 INFO [stderr] 46 |     fn from(x: std::io::Error) -> GameError {
Dec 18 06:40:22.216 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 06:40:22.216 INFO [stderr] 
Dec 18 06:40:22.239 INFO [stderr] warning: the feature `proc_macro_path_invoc` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 18 06:40:22.239 INFO [stderr]  --> src/main.rs:2:12
Dec 18 06:40:22.239 INFO [stderr]   |
Dec 18 06:40:22.239 INFO [stderr] 2 | #![feature(proc_macro_path_invoc)]
Dec 18 06:40:22.239 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:40:22.239 INFO [stderr]   |
Dec 18 06:40:22.239 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 06:40:22.239 INFO [stderr] 
Dec 18 06:40:22.239 INFO [stderr] warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 18 06:40:22.239 INFO [stderr]  --> src/main.rs:3:12
Dec 18 06:40:22.239 INFO [stderr]   |
Dec 18 06:40:22.239 INFO [stderr] 3 | #![feature(use_extern_macros)]
Dec 18 06:40:22.239 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^
Dec 18 06:40:22.239 INFO [stderr] 
Dec 18 06:40:22.260 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:40:22.261 INFO [stderr]    --> src/main.rs:166:31
Dec 18 06:40:22.261 INFO [stderr]     |
Dec 18 06:40:22.261 INFO [stderr] 166 |         let (mut move_column, mut destination_column) = match (move_column, destination_column) {
Dec 18 06:40:22.261 INFO [stderr]     |                               ----^^^^^^^^^^^^^^^^^^
Dec 18 06:40:22.261 INFO [stderr]     |                               |
Dec 18 06:40:22.262 INFO [stderr]     |                               help: remove this `mut`
Dec 18 06:40:22.262 INFO [stderr]     |
Dec 18 06:40:22.262 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 06:40:22.262 INFO [stderr] 
Dec 18 06:40:22.262 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:40:22.263 INFO [stderr]    --> src/main.rs:166:14
Dec 18 06:40:22.263 INFO [stderr]     |
Dec 18 06:40:22.263 INFO [stderr] 166 |         let (mut move_column, mut destination_column) = match (move_column, destination_column) {
Dec 18 06:40:22.263 INFO [stderr]     |              ----^^^^^^^^^^^
Dec 18 06:40:22.264 INFO [stderr]     |              |
Dec 18 06:40:22.264 INFO [stderr]     |              help: remove this `mut`
Dec 18 06:40:22.264 INFO [stderr] 
Dec 18 06:40:22.288 INFO [stderr] warning: the feature `proc_macro_path_invoc` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 18 06:40:22.289 INFO [stderr]  --> src/main.rs:2:12
Dec 18 06:40:22.289 INFO [stderr]   |
Dec 18 06:40:22.289 INFO [stderr] 2 | #![feature(proc_macro_path_invoc)]
Dec 18 06:40:22.289 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:40:22.290 INFO [stderr]   |
Dec 18 06:40:22.290 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 06:40:22.290 INFO [stderr] 
Dec 18 06:40:22.290 INFO [stderr] warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 18 06:40:22.290 INFO [stderr]  --> src/main.rs:3:12
Dec 18 06:40:22.291 INFO [stderr]   |
Dec 18 06:40:22.291 INFO [stderr] 3 | #![feature(use_extern_macros)]
Dec 18 06:40:22.291 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^
Dec 18 06:40:22.291 INFO [stderr] 
Dec 18 06:40:22.393 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.53s
Dec 18 06:40:23.502 INFO running `"docker" "inspect" "ddf81c3c04242e73af55c3521d70ef986fcdaa27bf7e0fd26f74aa7c17acafa4"`
Dec 18 06:40:23.868 INFO running `"docker" "rm" "-f" "ddf81c3c04242e73af55c3521d70ef986fcdaa27bf7e0fd26f74aa7c17acafa4"`
Dec 18 06:40:24.168 INFO [stdout] ddf81c3c04242e73af55c3521d70ef986fcdaa27bf7e0fd26f74aa7c17acafa4