[INFO] updating cached repository jackcmay/sandbox_rust_rebuilds
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jackcmay/sandbox_rust_rebuilds
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jackcmay/sandbox_rust_rebuilds" "work/ex/beta-1.38-1/sources/1.37.0/gh/jackcmay/sandbox_rust_rebuilds"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jackcmay/sandbox_rust_rebuilds'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jackcmay/sandbox_rust_rebuilds" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackcmay/sandbox_rust_rebuilds"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackcmay/sandbox_rust_rebuilds'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e83e10154e143be1976f603b298393ac35b1ddd5
[INFO] sha for GitHub repo jackcmay/sandbox_rust_rebuilds: e83e10154e143be1976f603b298393ac35b1ddd5
[INFO] validating manifest of jackcmay/sandbox_rust_rebuilds 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 jackcmay/sandbox_rust_rebuilds 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 jackcmay/sandbox_rust_rebuilds
[INFO] removed workspace from jackcmay/sandbox_rust_rebuilds
[INFO] finished frobbing jackcmay/sandbox_rust_rebuilds
[INFO] frobbed toml for jackcmay/sandbox_rust_rebuilds written to work/ex/beta-1.38-1/sources/1.37.0/gh/jackcmay/sandbox_rust_rebuilds/Cargo.toml
[INFO] started frobbing jackcmay/sandbox_rust_rebuilds
[INFO] removed workspace from jackcmay/sandbox_rust_rebuilds
[INFO] finished frobbing jackcmay/sandbox_rust_rebuilds
[INFO] frobbed toml for jackcmay/sandbox_rust_rebuilds written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackcmay/sandbox_rust_rebuilds/Cargo.toml
[INFO] crate jackcmay/sandbox_rust_rebuilds 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jackcmay/sandbox_rust_rebuilds/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 jackcmay/sandbox_rust_rebuilds against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackcmay/sandbox_rust_rebuilds:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 933206d30f4807350db3081bf6b968d546b90d123a9227b54deb7267dcb5eedd
[INFO] running `"docker" "start" "-a" "933206d30f4807350db3081bf6b968d546b90d123a9227b54deb7267dcb5eedd"`
[INFO] [stderr]    Compiling flate2 v1.0.11
[INFO] [stderr]    Compiling reqwest v0.9.19
[INFO] [stderr]    Compiling root v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.72s
[INFO] running `"docker" "inspect" "933206d30f4807350db3081bf6b968d546b90d123a9227b54deb7267dcb5eedd"`
[INFO] running `"docker" "rm" "-f" "933206d30f4807350db3081bf6b968d546b90d123a9227b54deb7267dcb5eedd"`
[INFO] [stdout] 933206d30f4807350db3081bf6b968d546b90d123a9227b54deb7267dcb5eedd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackcmay/sandbox_rust_rebuilds:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5fb89f5b97fd0e9c35acd361ec00686305b809a04ae982a3527c8e56aa1a3d01
[INFO] running `"docker" "start" "-a" "5fb89f5b97fd0e9c35acd361ec00686305b809a04ae982a3527c8e56aa1a3d01"`
[INFO] [stderr]    Compiling root v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "5fb89f5b97fd0e9c35acd361ec00686305b809a04ae982a3527c8e56aa1a3d01"`
[INFO] running `"docker" "rm" "-f" "5fb89f5b97fd0e9c35acd361ec00686305b809a04ae982a3527c8e56aa1a3d01"`
[INFO] [stdout] 5fb89f5b97fd0e9c35acd361ec00686305b809a04ae982a3527c8e56aa1a3d01
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackcmay/sandbox_rust_rebuilds:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] c7ece6f89f1967a12d57e8523c90cc814339bdfc3f1f0a4bb85dde5aa73450a2
[INFO] running `"docker" "start" "-a" "c7ece6f89f1967a12d57e8523c90cc814339bdfc3f1f0a4bb85dde5aa73450a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/root-871f5644befae39b
[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" "c7ece6f89f1967a12d57e8523c90cc814339bdfc3f1f0a4bb85dde5aa73450a2"`
[INFO] running `"docker" "rm" "-f" "c7ece6f89f1967a12d57e8523c90cc814339bdfc3f1f0a4bb85dde5aa73450a2"`
[INFO] [stdout] c7ece6f89f1967a12d57e8523c90cc814339bdfc3f1f0a4bb85dde5aa73450a2