[INFO] updating cached repository lowks/gettingrusty
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lowks/gettingrusty
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lowks/gettingrusty" "work/ex/beta-1.38-1/sources/1.37.0/gh/lowks/gettingrusty"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lowks/gettingrusty'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lowks/gettingrusty" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lowks/gettingrusty"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lowks/gettingrusty'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c793a1888c8b5ef702b8ea63e1e91c9084c7e9a
[INFO] sha for GitHub repo lowks/gettingrusty: 6c793a1888c8b5ef702b8ea63e1e91c9084c7e9a
[INFO] validating manifest of lowks/gettingrusty 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 lowks/gettingrusty 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 lowks/gettingrusty
[INFO] finished frobbing lowks/gettingrusty
[INFO] frobbed toml for lowks/gettingrusty written to work/ex/beta-1.38-1/sources/1.37.0/gh/lowks/gettingrusty/Cargo.toml
[INFO] started frobbing lowks/gettingrusty
[INFO] finished frobbing lowks/gettingrusty
[INFO] frobbed toml for lowks/gettingrusty written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lowks/gettingrusty/Cargo.toml
[INFO] crate lowks/gettingrusty 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 lowks/gettingrusty against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lowks/gettingrusty:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c272b3d69c4cb0f97d1772514bc6c28aec99f7f14ec7cb8dccb7d0540f3e6bc8
[INFO] running `"docker" "start" "-a" "c272b3d69c4cb0f97d1772514bc6c28aec99f7f14ec7cb8dccb7d0540f3e6bc8"`
[INFO] [stderr]    Compiling gettingrusty v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/semicolons.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |             2 * m;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `"docker" "inspect" "c272b3d69c4cb0f97d1772514bc6c28aec99f7f14ec7cb8dccb7d0540f3e6bc8"`
[INFO] running `"docker" "rm" "-f" "c272b3d69c4cb0f97d1772514bc6c28aec99f7f14ec7cb8dccb7d0540f3e6bc8"`
[INFO] [stdout] c272b3d69c4cb0f97d1772514bc6c28aec99f7f14ec7cb8dccb7d0540f3e6bc8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lowks/gettingrusty:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4076c4df4f0c4ef5b001e60d0908a8e41b67c4636dce3c6f5dbcceb000d55ad2
[INFO] running `"docker" "start" "-a" "4076c4df4f0c4ef5b001e60d0908a8e41b67c4636dce3c6f5dbcceb000d55ad2"`
[INFO] [stderr]    Compiling gettingrusty v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/semicolons.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 |             2 * m;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `"docker" "inspect" "4076c4df4f0c4ef5b001e60d0908a8e41b67c4636dce3c6f5dbcceb000d55ad2"`
[INFO] running `"docker" "rm" "-f" "4076c4df4f0c4ef5b001e60d0908a8e41b67c4636dce3c6f5dbcceb000d55ad2"`
[INFO] [stdout] 4076c4df4f0c4ef5b001e60d0908a8e41b67c4636dce3c6f5dbcceb000d55ad2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lowks/gettingrusty:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 266cef7468f35afae7851cbfded98b94ed7d508375ed9308ca97b24d80bb2ee2
[INFO] running `"docker" "start" "-a" "266cef7468f35afae7851cbfded98b94ed7d508375ed9308ca97b24d80bb2ee2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/gettingrusty-175979b4f060659d
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test functional::test_functional ... ok
[INFO] [stdout] test conditionals::test_conditionals ... ok
[INFO] [stdout] test semicolons::test_expr ... ok
[INFO] [stdout] test guard_clause::test_pattern_m ... ok
[INFO] [stdout] test pattern_match::test_pattern_m ... ok
[INFO] [stdout] test matching::test_matching ... ok
[INFO] [stdout] test string::test_push_string ... ok
[INFO] [stdout] test string::test_replace ... ok
[INFO] [stdout] test string::test_string_capacity ... ok
[INFO] [stdout] test string::test_truncate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "266cef7468f35afae7851cbfded98b94ed7d508375ed9308ca97b24d80bb2ee2"`
[INFO] running `"docker" "rm" "-f" "266cef7468f35afae7851cbfded98b94ed7d508375ed9308ca97b24d80bb2ee2"`
[INFO] [stdout] 266cef7468f35afae7851cbfded98b94ed7d508375ed9308ca97b24d80bb2ee2