[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 1.38.0 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-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymmtmdk/shadow_cost_rust on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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-2/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" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] f9fe5aecfbc59bc674104abf5b100c7f31680fd68ae0323effa8bb6f6948c338
[INFO] running `"docker" "start" "-a" "f9fe5aecfbc59bc674104abf5b100c7f31680fd68ae0323effa8bb6f6948c338"`
[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 1.87s
[INFO] running `"docker" "inspect" "f9fe5aecfbc59bc674104abf5b100c7f31680fd68ae0323effa8bb6f6948c338"`
[INFO] running `"docker" "rm" "-f" "f9fe5aecfbc59bc674104abf5b100c7f31680fd68ae0323effa8bb6f6948c338"`
[INFO] [stdout] f9fe5aecfbc59bc674104abf5b100c7f31680fd68ae0323effa8bb6f6948c338
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 527ecd57d55d996fa97070563bb7ae70f114d2ec9018b40c82774d756099c354
[INFO] running `"docker" "start" "-a" "527ecd57d55d996fa97070563bb7ae70f114d2ec9018b40c82774d756099c354"`
[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 1.11s
[INFO] running `"docker" "inspect" "527ecd57d55d996fa97070563bb7ae70f114d2ec9018b40c82774d756099c354"`
[INFO] running `"docker" "rm" "-f" "527ecd57d55d996fa97070563bb7ae70f114d2ec9018b40c82774d756099c354"`
[INFO] [stdout] 527ecd57d55d996fa97070563bb7ae70f114d2ec9018b40c82774d756099c354
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 826ed72306c358d75c1b155d9efa45b9a87bc070f4adaaeb5a6b7265ae04f465
[INFO] running `"docker" "start" "-a" "826ed72306c358d75c1b155d9efa45b9a87bc070f4adaaeb5a6b7265ae04f465"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/shadow_cost_rust-82849f0ffb1f29c5
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::add ... ok
[INFO] [stdout] test tests::trial ... ok
[INFO] [stdout] test tests::draw ... ok
[INFO] [stdout] test tests::less_than ... ok
[INFO] [stdout] test tests::remove ... ok
[INFO] [stdout] test tests::new ... ok
[INFO] [stdout] test tests::size ... ok
[INFO] [stdout] test tests::player ... ok
[INFO] [stdout] test tests::play ... ok
[INFO] [stdout] test tests::cost_sim ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/shadow_cost_rust-0b177c4dc9e6b297
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "826ed72306c358d75c1b155d9efa45b9a87bc070f4adaaeb5a6b7265ae04f465"`
[INFO] running `"docker" "rm" "-f" "826ed72306c358d75c1b155d9efa45b9a87bc070f4adaaeb5a6b7265ae04f465"`
[INFO] [stdout] 826ed72306c358d75c1b155d9efa45b9a87bc070f4adaaeb5a6b7265ae04f465