[INFO] updating cached repository mchesser/serde_utils
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mchesser/serde_utils
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mchesser/serde_utils" "work/ex/beta-1.38-1/sources/1.37.0/gh/mchesser/serde_utils"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mchesser/serde_utils'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mchesser/serde_utils" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mchesser/serde_utils"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mchesser/serde_utils'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91fcb9b878d7e2993f21392dd98a2a8d1e1dbf5d
[INFO] sha for GitHub repo mchesser/serde_utils: 91fcb9b878d7e2993f21392dd98a2a8d1e1dbf5d
[INFO] validating manifest of mchesser/serde_utils 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 mchesser/serde_utils 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 mchesser/serde_utils
[INFO] finished frobbing mchesser/serde_utils
[INFO] frobbed toml for mchesser/serde_utils written to work/ex/beta-1.38-1/sources/1.37.0/gh/mchesser/serde_utils/Cargo.toml
[INFO] started frobbing mchesser/serde_utils
[INFO] finished frobbing mchesser/serde_utils
[INFO] frobbed toml for mchesser/serde_utils written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mchesser/serde_utils/Cargo.toml
[INFO] crate mchesser/serde_utils 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/mchesser/serde_utils/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[INFO] the lockfile is outdated, regenerating it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 mchesser/serde_utils 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/mchesser/serde_utils:/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] 89fa305c7791056dae2c81d9ecdc8ef1d45c0410dfd52d075fe043d76ad4123d
[INFO] running `"docker" "start" "-a" "89fa305c7791056dae2c81d9ecdc8ef1d45c0410dfd52d075fe043d76ad4123d"`
[INFO] [stderr]    Compiling serde_utils v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "89fa305c7791056dae2c81d9ecdc8ef1d45c0410dfd52d075fe043d76ad4123d"`
[INFO] running `"docker" "rm" "-f" "89fa305c7791056dae2c81d9ecdc8ef1d45c0410dfd52d075fe043d76ad4123d"`
[INFO] [stdout] 89fa305c7791056dae2c81d9ecdc8ef1d45c0410dfd52d075fe043d76ad4123d
[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/mchesser/serde_utils:/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] 47258dfddc410c3c3c72027a67cb59d7cc072e07742a24fd28ba2a7cb273bf57
[INFO] running `"docker" "start" "-a" "47258dfddc410c3c3c72027a67cb59d7cc072e07742a24fd28ba2a7cb273bf57"`
[INFO] [stderr]    Compiling serde_utils v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "47258dfddc410c3c3c72027a67cb59d7cc072e07742a24fd28ba2a7cb273bf57"`
[INFO] running `"docker" "rm" "-f" "47258dfddc410c3c3c72027a67cb59d7cc072e07742a24fd28ba2a7cb273bf57"`
[INFO] [stdout] 47258dfddc410c3c3c72027a67cb59d7cc072e07742a24fd28ba2a7cb273bf57
[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/mchesser/serde_utils:/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] 7d4f5ef72460efe0d9a98fe0061f910a7c1f6b76ded4ab271ca4165376f1bbe7
[INFO] running `"docker" "start" "-a" "7d4f5ef72460efe0d9a98fe0061f910a7c1f6b76ded4ab271ca4165376f1bbe7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_utils-b5ed534c36ac9648
[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] [stderr]    Doc-tests serde_utils
[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" "7d4f5ef72460efe0d9a98fe0061f910a7c1f6b76ded4ab271ca4165376f1bbe7"`
[INFO] running `"docker" "rm" "-f" "7d4f5ef72460efe0d9a98fe0061f910a7c1f6b76ded4ab271ca4165376f1bbe7"`
[INFO] [stdout] 7d4f5ef72460efe0d9a98fe0061f910a7c1f6b76ded4ab271ca4165376f1bbe7