[INFO] updating cached repository BurntSushi/vcr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BurntSushi/vcr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BurntSushi/vcr" "work/ex/beta-1.38-1/sources/1.37.0/gh/BurntSushi/vcr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/BurntSushi/vcr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BurntSushi/vcr" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BurntSushi/vcr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BurntSushi/vcr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ef1ba50743ad5eb2b637abe65d18c9eeee336563
[INFO] sha for GitHub repo BurntSushi/vcr: ef1ba50743ad5eb2b637abe65d18c9eeee336563
[INFO] validating manifest of BurntSushi/vcr 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 BurntSushi/vcr 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 BurntSushi/vcr
[INFO] finished frobbing BurntSushi/vcr
[INFO] frobbed toml for BurntSushi/vcr written to work/ex/beta-1.38-1/sources/1.37.0/gh/BurntSushi/vcr/Cargo.toml
[INFO] started frobbing BurntSushi/vcr
[INFO] finished frobbing BurntSushi/vcr
[INFO] frobbed toml for BurntSushi/vcr written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BurntSushi/vcr/Cargo.toml
[INFO] crate BurntSushi/vcr already has a lockfile, it will not be regenerated
[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 BurntSushi/vcr 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/gh/BurntSushi/vcr:/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] 4934e54329e2f01715233cb26a81a07560cc7ab2116f3dbb5e9360bafeef6a20
[INFO] running `"docker" "start" "-a" "4934e54329e2f01715233cb26a81a07560cc7ab2116f3dbb5e9360bafeef6a20"`
[INFO] [stderr]    Compiling cc v1.0.8
[INFO] [stderr]    Compiling atty v0.2.8
[INFO] [stderr]    Compiling clap v2.31.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling vcr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.68s
[INFO] running `"docker" "inspect" "4934e54329e2f01715233cb26a81a07560cc7ab2116f3dbb5e9360bafeef6a20"`
[INFO] running `"docker" "rm" "-f" "4934e54329e2f01715233cb26a81a07560cc7ab2116f3dbb5e9360bafeef6a20"`
[INFO] [stdout] 4934e54329e2f01715233cb26a81a07560cc7ab2116f3dbb5e9360bafeef6a20
[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/gh/BurntSushi/vcr:/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] 94fe60c6216ee48190765587229b2c14e9807ff4ff25f8d9b38308d5f1ab9c0a
[INFO] running `"docker" "start" "-a" "94fe60c6216ee48190765587229b2c14e9807ff4ff25f8d9b38308d5f1ab9c0a"`
[INFO] [stderr]    Compiling vcr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "94fe60c6216ee48190765587229b2c14e9807ff4ff25f8d9b38308d5f1ab9c0a"`
[INFO] running `"docker" "rm" "-f" "94fe60c6216ee48190765587229b2c14e9807ff4ff25f8d9b38308d5f1ab9c0a"`
[INFO] [stdout] 94fe60c6216ee48190765587229b2c14e9807ff4ff25f8d9b38308d5f1ab9c0a
[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/gh/BurntSushi/vcr:/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] 0975aca089a64d0523aad08631c2ee4d1875bcb59ffba7a5bf23b5c274094819
[INFO] running `"docker" "start" "-a" "0975aca089a64d0523aad08631c2ee4d1875bcb59ffba7a5bf23b5c274094819"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/vcr-620ea1c2991c6872
[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" "0975aca089a64d0523aad08631c2ee4d1875bcb59ffba7a5bf23b5c274094819"`
[INFO] running `"docker" "rm" "-f" "0975aca089a64d0523aad08631c2ee4d1875bcb59ffba7a5bf23b5c274094819"`
[INFO] [stdout] 0975aca089a64d0523aad08631c2ee4d1875bcb59ffba7a5bf23b5c274094819