[INFO] updating cached repository jakeledoux/dog
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jakeledoux/dog
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jakeledoux/dog" "work/ex/beta-1.37-6/sources/1.36.0/gh/jakeledoux/dog"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jakeledoux/dog'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jakeledoux/dog" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jakeledoux/dog"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jakeledoux/dog'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 133adfddfdc1682cf3a101ceded5e013c7dd38d2
[INFO] sha for GitHub repo jakeledoux/dog: 133adfddfdc1682cf3a101ceded5e013c7dd38d2
[INFO] validating manifest of jakeledoux/dog on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jakeledoux/dog on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jakeledoux/dog
[INFO] finished frobbing jakeledoux/dog
[INFO] frobbed toml for jakeledoux/dog written to work/ex/beta-1.37-6/sources/1.36.0/gh/jakeledoux/dog/Cargo.toml
[INFO] started frobbing jakeledoux/dog
[INFO] finished frobbing jakeledoux/dog
[INFO] frobbed toml for jakeledoux/dog written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jakeledoux/dog/Cargo.toml
[INFO] crate jakeledoux/dog already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jakeledoux/dog against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jakeledoux/dog:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] d2b3feb2e713008a67d245fa75e922d17e8d9a45380b8717395c54a1d3475747
[INFO] running `"docker" "start" "-a" "d2b3feb2e713008a67d245fa75e922d17e8d9a45380b8717395c54a1d3475747"`
[INFO] [stderr]    Compiling backtrace v0.3.22
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling mio v0.6.17
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling publicsuffix v1.5.2
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling tokio v0.1.20
[INFO] [stderr]    Compiling hyper v0.12.29
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling reqwest v0.9.17
[INFO] [stderr]    Compiling dog v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let mut contents: String;
[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 41.29s
[INFO] running `"docker" "inspect" "d2b3feb2e713008a67d245fa75e922d17e8d9a45380b8717395c54a1d3475747"`
[INFO] running `"docker" "rm" "-f" "d2b3feb2e713008a67d245fa75e922d17e8d9a45380b8717395c54a1d3475747"`
[INFO] [stdout] d2b3feb2e713008a67d245fa75e922d17e8d9a45380b8717395c54a1d3475747
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jakeledoux/dog:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] ebda0047dbca7ffd9ad02c04dd43cfbec71ae725ec81c32a47d27ccac4d207d2
[INFO] running `"docker" "start" "-a" "ebda0047dbca7ffd9ad02c04dd43cfbec71ae725ec81c32a47d27ccac4d207d2"`
[INFO] [stderr]    Compiling dog v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let mut contents: String;
[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 2.11s
[INFO] running `"docker" "inspect" "ebda0047dbca7ffd9ad02c04dd43cfbec71ae725ec81c32a47d27ccac4d207d2"`
[INFO] running `"docker" "rm" "-f" "ebda0047dbca7ffd9ad02c04dd43cfbec71ae725ec81c32a47d27ccac4d207d2"`
[INFO] [stdout] ebda0047dbca7ffd9ad02c04dd43cfbec71ae725ec81c32a47d27ccac4d207d2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jakeledoux/dog:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 09d8a5cc17c29c7bf98a0b92f9a388c879e8cfcd92834dc18268ac035b82eb68
[INFO] running `"docker" "start" "-a" "09d8a5cc17c29c7bf98a0b92f9a388c879e8cfcd92834dc18268ac035b82eb68"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dog-640e315b45316839
[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" "09d8a5cc17c29c7bf98a0b92f9a388c879e8cfcd92834dc18268ac035b82eb68"`
[INFO] running `"docker" "rm" "-f" "09d8a5cc17c29c7bf98a0b92f9a388c879e8cfcd92834dc18268ac035b82eb68"`
[INFO] [stdout] 09d8a5cc17c29c7bf98a0b92f9a388c879e8cfcd92834dc18268ac035b82eb68