[INFO] crate return_if_ok 0.1.0 is already in cache
[INFO] extracting crate return_if_ok 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/return_if_ok/0.1.0
[INFO] extracting crate return_if_ok 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/return_if_ok/0.1.0
[INFO] validating manifest of return_if_ok-0.1.0 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 return_if_ok-0.1.0 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 return_if_ok-0.1.0
[INFO] finished frobbing return_if_ok-0.1.0
[INFO] frobbed toml for return_if_ok-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/return_if_ok/0.1.0/Cargo.toml
[INFO] started frobbing return_if_ok-0.1.0
[INFO] finished frobbing return_if_ok-0.1.0
[INFO] frobbed toml for return_if_ok-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/return_if_ok/0.1.0/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] [stderr]     Blocking waiting for file lock on package cache
[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 return_if_ok-0.1.0 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/return_if_ok/0.1.0:/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] dcf99f790261ec3e726e49f1b91fa14f1bd3404ee1990ef4d735cdbd554e0cbf
[INFO] running `"docker" "start" "-a" "dcf99f790261ec3e726e49f1b91fa14f1bd3404ee1990ef4d735cdbd554e0cbf"`
[INFO] [stderr]    Compiling return_if_ok v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `"docker" "inspect" "dcf99f790261ec3e726e49f1b91fa14f1bd3404ee1990ef4d735cdbd554e0cbf"`
[INFO] running `"docker" "rm" "-f" "dcf99f790261ec3e726e49f1b91fa14f1bd3404ee1990ef4d735cdbd554e0cbf"`
[INFO] [stdout] dcf99f790261ec3e726e49f1b91fa14f1bd3404ee1990ef4d735cdbd554e0cbf
[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/reg/return_if_ok/0.1.0:/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] 9747d0b16ed7eabe21e4dcf77ed9c6d3255412e1b1d0de293b22f523c296db68
[INFO] running `"docker" "start" "-a" "9747d0b16ed7eabe21e4dcf77ed9c6d3255412e1b1d0de293b22f523c296db68"`
[INFO] [stderr]    Compiling return_if_ok v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "9747d0b16ed7eabe21e4dcf77ed9c6d3255412e1b1d0de293b22f523c296db68"`
[INFO] running `"docker" "rm" "-f" "9747d0b16ed7eabe21e4dcf77ed9c6d3255412e1b1d0de293b22f523c296db68"`
[INFO] [stdout] 9747d0b16ed7eabe21e4dcf77ed9c6d3255412e1b1d0de293b22f523c296db68
[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/reg/return_if_ok/0.1.0:/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] db5391a46eef6691ce27b106b38aeb6396b8d6b3858417ca42d5f010ed672245
[INFO] running `"docker" "start" "-a" "db5391a46eef6691ce27b106b38aeb6396b8d6b3858417ca42d5f010ed672245"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/return_if_ok-c3c0f28e1c4cf55d
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "db5391a46eef6691ce27b106b38aeb6396b8d6b3858417ca42d5f010ed672245"`
[INFO] running `"docker" "rm" "-f" "db5391a46eef6691ce27b106b38aeb6396b8d6b3858417ca42d5f010ed672245"`
[INFO] [stdout] db5391a46eef6691ce27b106b38aeb6396b8d6b3858417ca42d5f010ed672245