[INFO] crate wf 0.2.2 is already in cache
[INFO] extracting crate wf 0.2.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/wf/0.2.2
[INFO] extracting crate wf 0.2.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/wf/0.2.2
[INFO] validating manifest of wf-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 wf-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 wf-0.2.2
[INFO] finished frobbing wf-0.2.2
[INFO] frobbed toml for wf-0.2.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/wf/0.2.2/Cargo.toml
[INFO] started frobbing wf-0.2.2
[INFO] finished frobbing wf-0.2.2
[INFO] frobbed toml for wf-0.2.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/wf/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing wf-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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/wf/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] 5699e57ece40d6e07085887be487789aac191978eff54ced3e65f0ec5582451f
[INFO] running `"docker" "start" "-a" "5699e57ece40d6e07085887be487789aac191978eff54ced3e65f0ec5582451f"`
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling wf v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `"docker" "inspect" "5699e57ece40d6e07085887be487789aac191978eff54ced3e65f0ec5582451f"`
[INFO] running `"docker" "rm" "-f" "5699e57ece40d6e07085887be487789aac191978eff54ced3e65f0ec5582451f"`
[INFO] [stdout] 5699e57ece40d6e07085887be487789aac191978eff54ced3e65f0ec5582451f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/wf/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] 61c426f31e3149ac9c1c1cf74d4f479e935c16c46f18ed21ed6e3cc60fbf9e2e
[INFO] running `"docker" "start" "-a" "61c426f31e3149ac9c1c1cf74d4f479e935c16c46f18ed21ed6e3cc60fbf9e2e"`
[INFO] [stderr]    Compiling wf v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "61c426f31e3149ac9c1c1cf74d4f479e935c16c46f18ed21ed6e3cc60fbf9e2e"`
[INFO] running `"docker" "rm" "-f" "61c426f31e3149ac9c1c1cf74d4f479e935c16c46f18ed21ed6e3cc60fbf9e2e"`
[INFO] [stdout] 61c426f31e3149ac9c1c1cf74d4f479e935c16c46f18ed21ed6e3cc60fbf9e2e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/wf/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] 3c1efc33a455e3e049a7ff423734da27ee4c1249a001cf4f516f43396f73ea74
[INFO] running `"docker" "start" "-a" "3c1efc33a455e3e049a7ff423734da27ee4c1249a001cf4f516f43396f73ea74"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wf-8e84cde63e85af09
[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" "3c1efc33a455e3e049a7ff423734da27ee4c1249a001cf4f516f43396f73ea74"`
[INFO] running `"docker" "rm" "-f" "3c1efc33a455e3e049a7ff423734da27ee4c1249a001cf4f516f43396f73ea74"`
[INFO] [stdout] 3c1efc33a455e3e049a7ff423734da27ee4c1249a001cf4f516f43396f73ea74