[INFO] updating cached repository amscotti/rust_balanced_brackets
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/amscotti/rust_balanced_brackets
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/amscotti/rust_balanced_brackets" "work/ex/beta-1.38-1/sources/1.37.0/gh/amscotti/rust_balanced_brackets"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/amscotti/rust_balanced_brackets'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/amscotti/rust_balanced_brackets" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amscotti/rust_balanced_brackets"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amscotti/rust_balanced_brackets'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eca8dc8dedb54326a0968fc9ce47991c662eb41f
[INFO] sha for GitHub repo amscotti/rust_balanced_brackets: eca8dc8dedb54326a0968fc9ce47991c662eb41f
[INFO] validating manifest of amscotti/rust_balanced_brackets 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 amscotti/rust_balanced_brackets 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 amscotti/rust_balanced_brackets
[INFO] finished frobbing amscotti/rust_balanced_brackets
[INFO] frobbed toml for amscotti/rust_balanced_brackets written to work/ex/beta-1.38-1/sources/1.37.0/gh/amscotti/rust_balanced_brackets/Cargo.toml
[INFO] started frobbing amscotti/rust_balanced_brackets
[INFO] finished frobbing amscotti/rust_balanced_brackets
[INFO] frobbed toml for amscotti/rust_balanced_brackets written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amscotti/rust_balanced_brackets/Cargo.toml
[INFO] crate amscotti/rust_balanced_brackets 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing amscotti/rust_balanced_brackets 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/amscotti/rust_balanced_brackets:/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] 2596ea6b338189cf1dde136d38f190e335066e877f9a0b1cad81147d2efe942c
[INFO] running `"docker" "start" "-a" "2596ea6b338189cf1dde136d38f190e335066e877f9a0b1cad81147d2efe942c"`
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling smallvec v0.4.0
[INFO] [stderr]    Compiling stable_deref_trait v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clicolors-control v1.0.0
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.2.2
[INFO] [stderr]    Compiling number_prefix v0.2.8
[INFO] [stderr]    Compiling parking_lot v0.4.4
[INFO] [stderr]    Compiling console v0.7.5
[INFO] [stderr]    Compiling indicatif v0.11.0
[INFO] [stderr]    Compiling rust_balanced_brackets v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.20s
[INFO] running `"docker" "inspect" "2596ea6b338189cf1dde136d38f190e335066e877f9a0b1cad81147d2efe942c"`
[INFO] running `"docker" "rm" "-f" "2596ea6b338189cf1dde136d38f190e335066e877f9a0b1cad81147d2efe942c"`
[INFO] [stdout] 2596ea6b338189cf1dde136d38f190e335066e877f9a0b1cad81147d2efe942c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/amscotti/rust_balanced_brackets:/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] 23402762b61f368d6176a29efa4f81efb9ed50841ae9c426159f8891d1b6087f
[INFO] running `"docker" "start" "-a" "23402762b61f368d6176a29efa4f81efb9ed50841ae9c426159f8891d1b6087f"`
[INFO] [stderr]    Compiling rust_balanced_brackets v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "23402762b61f368d6176a29efa4f81efb9ed50841ae9c426159f8891d1b6087f"`
[INFO] running `"docker" "rm" "-f" "23402762b61f368d6176a29efa4f81efb9ed50841ae9c426159f8891d1b6087f"`
[INFO] [stdout] 23402762b61f368d6176a29efa4f81efb9ed50841ae9c426159f8891d1b6087f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/amscotti/rust_balanced_brackets:/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] b95bc4ac1bb4c495f2f064dbc32a21ed6a0894df63a86c987c40d0cff3d0ae59
[INFO] running `"docker" "start" "-a" "b95bc4ac1bb4c495f2f064dbc32a21ed6a0894df63a86c987c40d0cff3d0ae59"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_balanced_brackets-64a18700ed88e2dc
[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" "b95bc4ac1bb4c495f2f064dbc32a21ed6a0894df63a86c987c40d0cff3d0ae59"`
[INFO] running `"docker" "rm" "-f" "b95bc4ac1bb4c495f2f064dbc32a21ed6a0894df63a86c987c40d0cff3d0ae59"`
[INFO] [stdout] b95bc4ac1bb4c495f2f064dbc32a21ed6a0894df63a86c987c40d0cff3d0ae59