[INFO] crate string-builder 0.2.0 is already in cache
[INFO] extracting crate string-builder 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/string-builder/0.2.0
[INFO] extracting crate string-builder 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/string-builder/0.2.0
[INFO] validating manifest of string-builder-0.2.0 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 string-builder-0.2.0 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 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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/string-builder/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 string-builder-0.2.0 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a85c1ca5a811f559b8ed02e84e91457678ff2b84baa46a2ce3d73592b4cc405d
[INFO] running `"docker" "start" "-a" "a85c1ca5a811f559b8ed02e84e91457678ff2b84baa46a2ce3d73592b4cc405d"`
[INFO] [stderr]    Compiling string-builder v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "a85c1ca5a811f559b8ed02e84e91457678ff2b84baa46a2ce3d73592b4cc405d"`
[INFO] running `"docker" "rm" "-f" "a85c1ca5a811f559b8ed02e84e91457678ff2b84baa46a2ce3d73592b4cc405d"`
[INFO] [stdout] a85c1ca5a811f559b8ed02e84e91457678ff2b84baa46a2ce3d73592b4cc405d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 099c1fb5795cb84a6e3e6b629f38a86ec893a0e60bebebd4aac2bdf49bbd0c30
[INFO] running `"docker" "start" "-a" "099c1fb5795cb84a6e3e6b629f38a86ec893a0e60bebebd4aac2bdf49bbd0c30"`
[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" "099c1fb5795cb84a6e3e6b629f38a86ec893a0e60bebebd4aac2bdf49bbd0c30"`
[INFO] running `"docker" "rm" "-f" "099c1fb5795cb84a6e3e6b629f38a86ec893a0e60bebebd4aac2bdf49bbd0c30"`
[INFO] [stdout] 099c1fb5795cb84a6e3e6b629f38a86ec893a0e60bebebd4aac2bdf49bbd0c30
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 798a4f00401ee972435a76f40cb23b5cb7bf830f74096269774ff784b283f86d
[INFO] running `"docker" "start" "-a" "798a4f00401ee972435a76f40cb23b5cb7bf830f74096269774ff784b283f86d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/string_builder-f5fec46d187c8205
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_tool_album ... ok
[INFO] [stdout] test tests::test_all_supported_types ... ok
[INFO] [stdout] test tests::test_individual_unicode_characters ... 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::append (line 30) ... ok
[INFO] [stdout] test src/lib.rs - Builder::string (line 60) ... ok
[INFO] [stdout] test src/lib.rs - Builder::len (line 44) ... 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" "798a4f00401ee972435a76f40cb23b5cb7bf830f74096269774ff784b283f86d"`
[INFO] running `"docker" "rm" "-f" "798a4f00401ee972435a76f40cb23b5cb7bf830f74096269774ff784b283f86d"`
[INFO] [stdout] 798a4f00401ee972435a76f40cb23b5cb7bf830f74096269774ff784b283f86d