[INFO] cloning repository PicoJr/2019-hashcode-rust
[INFO] running `"git" "clone" "--bare" "git://github.com/PicoJr/2019-hashcode-rust.git" "work/cache/sources/gh/PicoJr/2019-hashcode-rust"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/PicoJr/2019-hashcode-rust'...
[INFO] running `"git" "clone" "work/cache/sources/gh/PicoJr/2019-hashcode-rust" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PicoJr/2019-hashcode-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PicoJr/2019-hashcode-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PicoJr/2019-hashcode-rust" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PicoJr/2019-hashcode-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PicoJr/2019-hashcode-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 73ebd65058f489aae43bfd2352bd0200b2233c30
[INFO] sha for GitHub repo PicoJr/2019-hashcode-rust: 73ebd65058f489aae43bfd2352bd0200b2233c30
[INFO] validating manifest of PicoJr/2019-hashcode-rust on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PicoJr/2019-hashcode-rust on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PicoJr/2019-hashcode-rust
[INFO] finished frobbing PicoJr/2019-hashcode-rust
[INFO] frobbed toml for PicoJr/2019-hashcode-rust written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PicoJr/2019-hashcode-rust/Cargo.toml
[INFO] started frobbing PicoJr/2019-hashcode-rust
[INFO] finished frobbing PicoJr/2019-hashcode-rust
[INFO] frobbed toml for PicoJr/2019-hashcode-rust written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PicoJr/2019-hashcode-rust/Cargo.toml
[INFO] crate PicoJr/2019-hashcode-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing PicoJr/2019-hashcode-rust against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PicoJr/2019-hashcode-rust:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 9fd9b800b208dc4767627874f3c17a26c86ea808cd63d57886105f35ba8df44a
[INFO] running `"docker" "start" "-a" "9fd9b800b208dc4767627874f3c17a26c86ea808cd63d57886105f35ba8df44a"`
[INFO] [stderr]    Compiling syn v0.15.28
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling hashcode2019 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let mut first_h: Image;
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |     let mut first_v: Image;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:246:9
[INFO] [stderr]     |
[INFO] [stderr] 246 |     let mut first_other_v: Image;
[INFO] [stderr]     |         ----^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.64s
[INFO] running `"docker" "inspect" "9fd9b800b208dc4767627874f3c17a26c86ea808cd63d57886105f35ba8df44a"`
[INFO] running `"docker" "rm" "-f" "9fd9b800b208dc4767627874f3c17a26c86ea808cd63d57886105f35ba8df44a"`
[INFO] [stdout] 9fd9b800b208dc4767627874f3c17a26c86ea808cd63d57886105f35ba8df44a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PicoJr/2019-hashcode-rust:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] dafacb921c969fcdab5d597159fb93db7e6b209f3f2089d480df68fd03cf6dfc
[INFO] running `"docker" "start" "-a" "dafacb921c969fcdab5d597159fb93db7e6b209f3f2089d480df68fd03cf6dfc"`
[INFO] [stderr]    Compiling hashcode2019 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let mut first_h: Image;
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |     let mut first_v: Image;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:246:9
[INFO] [stderr]     |
[INFO] [stderr] 246 |     let mut first_other_v: Image;
[INFO] [stderr]     |         ----^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `"docker" "inspect" "dafacb921c969fcdab5d597159fb93db7e6b209f3f2089d480df68fd03cf6dfc"`
[INFO] running `"docker" "rm" "-f" "dafacb921c969fcdab5d597159fb93db7e6b209f3f2089d480df68fd03cf6dfc"`
[INFO] [stdout] dafacb921c969fcdab5d597159fb93db7e6b209f3f2089d480df68fd03cf6dfc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PicoJr/2019-hashcode-rust:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] b4d00c16560ed0ded20c32c6602ee7bf4875e20160c57e546c9b2ca3aa487ea8
[INFO] running `"docker" "start" "-a" "b4d00c16560ed0ded20c32c6602ee7bf4875e20160c57e546c9b2ca3aa487ea8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hashcode2019-b512cd61e6471a0d
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hashcode2019-ac8e1bdfc02b0e6f
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_score ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hashcode2019
[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] [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" "b4d00c16560ed0ded20c32c6602ee7bf4875e20160c57e546c9b2ca3aa487ea8"`
[INFO] running `"docker" "rm" "-f" "b4d00c16560ed0ded20c32c6602ee7bf4875e20160c57e546c9b2ca3aa487ea8"`
[INFO] [stdout] b4d00c16560ed0ded20c32c6602ee7bf4875e20160c57e546c9b2ca3aa487ea8