[INFO] crate string-builder 0.2.0 is already in cache
[INFO] extracting crate string-builder 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/string-builder/0.2.0
[INFO] extracting crate string-builder 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/string-builder/0.2.0
[INFO] validating manifest of string-builder-0.2.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of string-builder-0.2.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing string-builder-0.2.0
[INFO] finished frobbing string-builder-0.2.0
[INFO] frobbed toml for string-builder-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/string-builder/0.2.0/Cargo.toml
[INFO] started frobbing string-builder-0.2.0
[INFO] finished frobbing string-builder-0.2.0
[INFO] frobbed toml for string-builder-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/string-builder/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing string-builder-0.2.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/string-builder/0.2.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] b40d590d04d786a4e0fe60de90e00c9da85b702a0423d809029b41a8c60b5cf0
[INFO] running `"docker" "start" "-a" "b40d590d04d786a4e0fe60de90e00c9da85b702a0423d809029b41a8c60b5cf0"`
[INFO] [stderr]    Compiling string-builder v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "b40d590d04d786a4e0fe60de90e00c9da85b702a0423d809029b41a8c60b5cf0"`
[INFO] running `"docker" "rm" "-f" "b40d590d04d786a4e0fe60de90e00c9da85b702a0423d809029b41a8c60b5cf0"`
[INFO] [stdout] b40d590d04d786a4e0fe60de90e00c9da85b702a0423d809029b41a8c60b5cf0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/string-builder/0.2.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 610c4b154eb9a4d27bb31b18c3ebcce2f4620dacbc70f6e5bd3861cf44e7926a
[INFO] running `"docker" "start" "-a" "610c4b154eb9a4d27bb31b18c3ebcce2f4620dacbc70f6e5bd3861cf44e7926a"`
[INFO] [stderr]    Compiling string-builder v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "610c4b154eb9a4d27bb31b18c3ebcce2f4620dacbc70f6e5bd3861cf44e7926a"`
[INFO] running `"docker" "rm" "-f" "610c4b154eb9a4d27bb31b18c3ebcce2f4620dacbc70f6e5bd3861cf44e7926a"`
[INFO] [stdout] 610c4b154eb9a4d27bb31b18c3ebcce2f4620dacbc70f6e5bd3861cf44e7926a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/string-builder/0.2.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 5207ff6c01203dc37f2a44a19cb63956b665a77ed774f88955ea96aa433ad18f
[INFO] running `"docker" "start" "-a" "5207ff6c01203dc37f2a44a19cb63956b665a77ed774f88955ea96aa433ad18f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/string_builder-e7c4998ba1da7ce2
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_individual_unicode_characters ... ok
[INFO] [stdout] test tests::test_tool_album ... ok
[INFO] [stdout] test tests::test_all_supported_types ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests string-builder
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - Builder::len (line 44) ... ok
[INFO] [stdout] test src/lib.rs - Builder::append (line 30) ... ok
[INFO] [stdout] test src/lib.rs - Builder::string (line 60) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5207ff6c01203dc37f2a44a19cb63956b665a77ed774f88955ea96aa433ad18f"`
[INFO] running `"docker" "rm" "-f" "5207ff6c01203dc37f2a44a19cb63956b665a77ed774f88955ea96aa433ad18f"`
[INFO] [stdout] 5207ff6c01203dc37f2a44a19cb63956b665a77ed774f88955ea96aa433ad18f