[INFO] updating cached repository NCCTS/cog
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NCCTS/cog
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NCCTS/cog" "work/ex/beta-1.38-1/sources/1.37.0/gh/NCCTS/cog"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/NCCTS/cog'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NCCTS/cog" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/NCCTS/cog"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/NCCTS/cog'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1350b4cac3285514ab4e8375f6ce447b15ce666
[INFO] sha for GitHub repo NCCTS/cog: f1350b4cac3285514ab4e8375f6ce447b15ce666
[INFO] validating manifest of NCCTS/cog 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 NCCTS/cog 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 NCCTS/cog
[INFO] finished frobbing NCCTS/cog
[INFO] frobbed toml for NCCTS/cog written to work/ex/beta-1.38-1/sources/1.37.0/gh/NCCTS/cog/Cargo.toml
[INFO] started frobbing NCCTS/cog
[INFO] finished frobbing NCCTS/cog
[INFO] frobbed toml for NCCTS/cog written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/NCCTS/cog/Cargo.toml
[INFO] crate NCCTS/cog 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/NCCTS/cog/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[INFO] the lockfile is outdated, regenerating it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 NCCTS/cog 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/gh/NCCTS/cog:/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] d6492a58a1b27afaee1152d6d6fa20cfbdf9c13aaa07ad38d74ae2cb65fce804
[INFO] running `"docker" "start" "-a" "d6492a58a1b27afaee1152d6d6fa20cfbdf9c13aaa07ad38d74ae2cb65fce804"`
[INFO] [stderr]    Compiling mucell v0.3.5
[INFO] [stderr]    Compiling url v2.1.0
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling hyper v0.0.18
[INFO] [stderr] error: expected identifier, found `"rustc-serialize"`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/hyper-0.0.18/src/lib.rs:128:14
[INFO] [stderr]     |
[INFO] [stderr] 128 | extern crate "rustc-serialize" as serialize;
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^ expected identifier
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `hyper`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d6492a58a1b27afaee1152d6d6fa20cfbdf9c13aaa07ad38d74ae2cb65fce804"`
[INFO] running `"docker" "rm" "-f" "d6492a58a1b27afaee1152d6d6fa20cfbdf9c13aaa07ad38d74ae2cb65fce804"`
[INFO] [stdout] d6492a58a1b27afaee1152d6d6fa20cfbdf9c13aaa07ad38d74ae2cb65fce804