[INFO] updating cached repository AndyDSM/conwayprofile-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AndyDSM/conwayprofile-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AndyDSM/conwayprofile-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/AndyDSM/conwayprofile-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/AndyDSM/conwayprofile-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AndyDSM/conwayprofile-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AndyDSM/conwayprofile-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AndyDSM/conwayprofile-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 653d292cc65ba0da8b4c5902dc6713be36c7746c
[INFO] sha for GitHub repo AndyDSM/conwayprofile-rust: 653d292cc65ba0da8b4c5902dc6713be36c7746c
[INFO] validating manifest of AndyDSM/conwayprofile-rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of AndyDSM/conwayprofile-rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing AndyDSM/conwayprofile-rust
[INFO] finished frobbing AndyDSM/conwayprofile-rust
[INFO] frobbed toml for AndyDSM/conwayprofile-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/AndyDSM/conwayprofile-rust/Cargo.toml
[INFO] started frobbing AndyDSM/conwayprofile-rust
[INFO] finished frobbing AndyDSM/conwayprofile-rust
[INFO] frobbed toml for AndyDSM/conwayprofile-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AndyDSM/conwayprofile-rust/Cargo.toml
[INFO] crate AndyDSM/conwayprofile-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing AndyDSM/conwayprofile-rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AndyDSM/conwayprofile-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=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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 884b4e4cc467d9c683a57dd9013ec438eb07edf6c5054b13fcf741e5205fc627
[INFO] running `"docker" "start" "-a" "884b4e4cc467d9c683a57dd9013ec438eb07edf6c5054b13fcf741e5205fc627"`
[INFO] [stderr]    Compiling conwayprofile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `wrap`
[INFO] [stderr]   --> src/lib.rs:90:43
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn board_next(&self, board: &Vec<u8>, wrap: bool) -> Vec<u8> {
[INFO] [stderr]    |                                           ^^^^ help: consider prefixing with an underscore: `_wrap`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         for i in 0..max {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:119:17
[INFO] [stderr]     |
[INFO] [stderr] 119 |             let mut next_board = self.board_next(&r[last], true);
[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 2.21s
[INFO] running `"docker" "inspect" "884b4e4cc467d9c683a57dd9013ec438eb07edf6c5054b13fcf741e5205fc627"`
[INFO] running `"docker" "rm" "-f" "884b4e4cc467d9c683a57dd9013ec438eb07edf6c5054b13fcf741e5205fc627"`
[INFO] [stdout] 884b4e4cc467d9c683a57dd9013ec438eb07edf6c5054b13fcf741e5205fc627
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AndyDSM/conwayprofile-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=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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] dd531a9bc45888f54d4ecbf1f579929fa6fd1ecb14b8e1017fe5784288d1b8a5
[INFO] running `"docker" "start" "-a" "dd531a9bc45888f54d4ecbf1f579929fa6fd1ecb14b8e1017fe5784288d1b8a5"`
[INFO] [stderr]    Compiling conwayprofile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `wrap`
[INFO] [stderr]   --> src/lib.rs:90:43
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn board_next(&self, board: &Vec<u8>, wrap: bool) -> Vec<u8> {
[INFO] [stderr]    |                                           ^^^^ help: consider prefixing with an underscore: `_wrap`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         for i in 0..max {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:119:17
[INFO] [stderr]     |
[INFO] [stderr] 119 |             let mut next_board = self.board_next(&r[last], true);
[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 0.94s
[INFO] running `"docker" "inspect" "dd531a9bc45888f54d4ecbf1f579929fa6fd1ecb14b8e1017fe5784288d1b8a5"`
[INFO] running `"docker" "rm" "-f" "dd531a9bc45888f54d4ecbf1f579929fa6fd1ecb14b8e1017fe5784288d1b8a5"`
[INFO] [stdout] dd531a9bc45888f54d4ecbf1f579929fa6fd1ecb14b8e1017fe5784288d1b8a5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AndyDSM/conwayprofile-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=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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 231e40f2ac38ff83fc5c1b72ef3fa79e97d826977c466da9fd2756d964f8570f
[INFO] running `"docker" "start" "-a" "231e40f2ac38ff83fc5c1b72ef3fa79e97d826977c466da9fd2756d964f8570f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/conwayprofile-67666dc9a746b544
[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]      Running /opt/crater/target/debug/deps/conwayprofile-ac43740c922b5003
[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 conwayprofile
[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" "231e40f2ac38ff83fc5c1b72ef3fa79e97d826977c466da9fd2756d964f8570f"`
[INFO] running `"docker" "rm" "-f" "231e40f2ac38ff83fc5c1b72ef3fa79e97d826977c466da9fd2756d964f8570f"`
[INFO] [stdout] 231e40f2ac38ff83fc5c1b72ef3fa79e97d826977c466da9fd2756d964f8570f