[INFO] updating cached repository learn-you-a-rust/basic_types
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/learn-you-a-rust/basic_types
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/learn-you-a-rust/basic_types" "work/ex/beta-1.38-1/sources/1.37.0/gh/learn-you-a-rust/basic_types"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/learn-you-a-rust/basic_types'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/learn-you-a-rust/basic_types" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/learn-you-a-rust/basic_types"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/learn-you-a-rust/basic_types'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 40f1d750f2a58e4b376fbab595884c8e04f30d21
[INFO] sha for GitHub repo learn-you-a-rust/basic_types: 40f1d750f2a58e4b376fbab595884c8e04f30d21
[INFO] validating manifest of learn-you-a-rust/basic_types 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 learn-you-a-rust/basic_types 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 learn-you-a-rust/basic_types
[INFO] finished frobbing learn-you-a-rust/basic_types
[INFO] frobbed toml for learn-you-a-rust/basic_types written to work/ex/beta-1.38-1/sources/1.37.0/gh/learn-you-a-rust/basic_types/Cargo.toml
[INFO] started frobbing learn-you-a-rust/basic_types
[INFO] finished frobbing learn-you-a-rust/basic_types
[INFO] frobbed toml for learn-you-a-rust/basic_types written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/learn-you-a-rust/basic_types/Cargo.toml
[INFO] crate learn-you-a-rust/basic_types 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 learn-you-a-rust/basic_types 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-1/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/learn-you-a-rust/basic_types:/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] 1d1b564579ffb19e5b5dfac3df2eebf870c8bcde382ffc140e5d09ad5a01adfc
[INFO] running `"docker" "start" "-a" "1d1b564579ffb19e5b5dfac3df2eebf870c8bcde382ffc140e5d09ad5a01adfc"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling basic_types v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `three`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let three = typed_array[2];
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_three`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nine`
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let nine = tuple.1;
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_nine`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "1d1b564579ffb19e5b5dfac3df2eebf870c8bcde382ffc140e5d09ad5a01adfc"`
[INFO] running `"docker" "rm" "-f" "1d1b564579ffb19e5b5dfac3df2eebf870c8bcde382ffc140e5d09ad5a01adfc"`
[INFO] [stdout] 1d1b564579ffb19e5b5dfac3df2eebf870c8bcde382ffc140e5d09ad5a01adfc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/learn-you-a-rust/basic_types:/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] 6bb21d11386711501ddfdfdf6bcff41a5738ea57c5aa34136c6c13da9106e363
[INFO] running `"docker" "start" "-a" "6bb21d11386711501ddfdfdf6bcff41a5738ea57c5aa34136c6c13da9106e363"`
[INFO] [stderr]    Compiling basic_types v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `three`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let three = typed_array[2];
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_three`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nine`
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let nine = tuple.1;
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_nine`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "6bb21d11386711501ddfdfdf6bcff41a5738ea57c5aa34136c6c13da9106e363"`
[INFO] running `"docker" "rm" "-f" "6bb21d11386711501ddfdfdf6bcff41a5738ea57c5aa34136c6c13da9106e363"`
[INFO] [stdout] 6bb21d11386711501ddfdfdf6bcff41a5738ea57c5aa34136c6c13da9106e363
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/learn-you-a-rust/basic_types:/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] 990f8c7035523ae4f416d7055dc172057cae1c22c4a86e29f1b32366c563ca6d
[INFO] running `"docker" "start" "-a" "990f8c7035523ae4f416d7055dc172057cae1c22c4a86e29f1b32366c563ca6d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/basic_types-63b2a1cc180eecf0
[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" "990f8c7035523ae4f416d7055dc172057cae1c22c4a86e29f1b32366c563ca6d"`
[INFO] running `"docker" "rm" "-f" "990f8c7035523ae4f416d7055dc172057cae1c22c4a86e29f1b32366c563ca6d"`
[INFO] [stdout] 990f8c7035523ae4f416d7055dc172057cae1c22c4a86e29f1b32366c563ca6d