[INFO] crate singleton 0.2.2 is already in cache
[INFO] extracting crate singleton 0.2.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/singleton/0.2.2
[INFO] extracting crate singleton 0.2.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/singleton/0.2.2
[INFO] validating manifest of singleton-0.2.2 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 singleton-0.2.2 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 singleton-0.2.2
[INFO] finished frobbing singleton-0.2.2
[INFO] frobbed toml for singleton-0.2.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/singleton/0.2.2/Cargo.toml
[INFO] started frobbing singleton-0.2.2
[INFO] finished frobbing singleton-0.2.2
[INFO] frobbed toml for singleton-0.2.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/singleton/0.2.2/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 singleton-0.2.2 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/singleton/0.2.2:/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] ab496eae4e8c5012b22a905643fe26902005ed0d9316765e76312e9c9dc6d29c
[INFO] running `"docker" "start" "-a" "ab496eae4e8c5012b22a905643fe26902005ed0d9316765e76312e9c9dc6d29c"`
[INFO] [stderr]    Compiling singleton v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "ab496eae4e8c5012b22a905643fe26902005ed0d9316765e76312e9c9dc6d29c"`
[INFO] running `"docker" "rm" "-f" "ab496eae4e8c5012b22a905643fe26902005ed0d9316765e76312e9c9dc6d29c"`
[INFO] [stdout] ab496eae4e8c5012b22a905643fe26902005ed0d9316765e76312e9c9dc6d29c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/singleton/0.2.2:/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] aa50477c2c841165fca6a5cb0f6a42d06e648872a4b0303303693c37960ee996
[INFO] running `"docker" "start" "-a" "aa50477c2c841165fca6a5cb0f6a42d06e648872a4b0303303693c37960ee996"`
[INFO] [stderr]    Compiling singleton v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "aa50477c2c841165fca6a5cb0f6a42d06e648872a4b0303303693c37960ee996"`
[INFO] running `"docker" "rm" "-f" "aa50477c2c841165fca6a5cb0f6a42d06e648872a4b0303303693c37960ee996"`
[INFO] [stdout] aa50477c2c841165fca6a5cb0f6a42d06e648872a4b0303303693c37960ee996
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/singleton/0.2.2:/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] 15e977058cf379262b6d7d2585cb52ffe95d6a44bafb6dcde06ea3e69b4a38ca
[INFO] running `"docker" "start" "-a" "15e977058cf379262b6d7d2585cb52ffe95d6a44bafb6dcde06ea3e69b4a38ca"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/singleton-5bc5cc04c975de32
[INFO] [stderr]      Running /opt/crater/target/debug/deps/trial-a4bd193fef65a6d0
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests singleton
[INFO] [stdout] running 1 test
[INFO] [stdout] test singleton::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [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" "15e977058cf379262b6d7d2585cb52ffe95d6a44bafb6dcde06ea3e69b4a38ca"`
[INFO] running `"docker" "rm" "-f" "15e977058cf379262b6d7d2585cb52ffe95d6a44bafb6dcde06ea3e69b4a38ca"`
[INFO] [stdout] 15e977058cf379262b6d7d2585cb52ffe95d6a44bafb6dcde06ea3e69b4a38ca