[INFO] updating cached repository https://github.com/ymmtmdk/shadow_cost_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3503bcbde45271f3dd4010fb9d0d611e55c51a0a
[INFO] testing ymmtmdk/shadow_cost_rust against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymmtmdk%2Fshadow_cost_rust" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymmtmdk/shadow_cost_rust on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ymmtmdk/shadow_cost_rust
[INFO] finished tweaking git repo https://github.com/ymmtmdk/shadow_cost_rust
[INFO] tweaked toml for git repo https://github.com/ymmtmdk/shadow_cost_rust written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ymmtmdk/shadow_cost_rust already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 8bcd694400e197a0df43133c2b594f30aff96d40175a470d92a4388dce1dd84e
[INFO] running `"docker" "start" "-a" "8bcd694400e197a0df43133c2b594f30aff96d40175a470d92a4388dce1dd84e"`
[INFO] [stderr]    Compiling shadow_cost_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:294:17
[INFO] [stderr]     |
[INFO] [stderr] 294 |             let mut t = self.cache.get_mut(key).unwrap();
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `"docker" "inspect" "8bcd694400e197a0df43133c2b594f30aff96d40175a470d92a4388dce1dd84e"`
[INFO] running `"docker" "rm" "-f" "8bcd694400e197a0df43133c2b594f30aff96d40175a470d92a4388dce1dd84e"`
[INFO] [stdout] 8bcd694400e197a0df43133c2b594f30aff96d40175a470d92a4388dce1dd84e
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] e9aa724fbabe647b57f175ba7523d9e3c57ff64eb3ae08d7684a096f4170d053
[INFO] running `"docker" "start" "-a" "e9aa724fbabe647b57f175ba7523d9e3c57ff64eb3ae08d7684a096f4170d053"`
[INFO] [stderr]    Compiling shadow_cost_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:294:17
[INFO] [stderr]     |
[INFO] [stderr] 294 |             let mut t = self.cache.get_mut(key).unwrap();
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "e9aa724fbabe647b57f175ba7523d9e3c57ff64eb3ae08d7684a096f4170d053"`
[INFO] running `"docker" "rm" "-f" "e9aa724fbabe647b57f175ba7523d9e3c57ff64eb3ae08d7684a096f4170d053"`
[INFO] [stdout] e9aa724fbabe647b57f175ba7523d9e3c57ff64eb3ae08d7684a096f4170d053
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 13f0071592ce78766e5285ca6f31abd8f6ae72c8fc4049131769bfadfb776b8d
[INFO] running `"docker" "start" "-a" "13f0071592ce78766e5285ca6f31abd8f6ae72c8fc4049131769bfadfb776b8d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/shadow_cost_rust-9233894c80bf73d0
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::trial ... ok
[INFO] [stdout] test tests::add ... ok
[INFO] [stdout] test tests::new ... ok
[INFO] [stdout] test tests::remove ... ok
[INFO] [stdout] test tests::size ... ok
[INFO] [stdout] test tests::player ... ok
[INFO] [stdout] test tests::play ... ok
[INFO] [stdout] test tests::draw ... ok
[INFO] [stdout] test tests::less_than ... ok
[INFO] [stdout] test tests::cost_sim ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/shadow_cost_rust-325e5d5d177c0af1
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests shadow_cost_rust
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "13f0071592ce78766e5285ca6f31abd8f6ae72c8fc4049131769bfadfb776b8d"`
[INFO] running `"docker" "rm" "-f" "13f0071592ce78766e5285ca6f31abd8f6ae72c8fc4049131769bfadfb776b8d"`
[INFO] [stdout] 13f0071592ce78766e5285ca6f31abd8f6ae72c8fc4049131769bfadfb776b8d