[INFO] updating cached repository glennw/project
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/glennw/project
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/glennw/project" "work/ex/beta-1.38-1/sources/1.37.0/gh/glennw/project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/glennw/project'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/glennw/project" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/glennw/project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/glennw/project'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42abc4f46abc34d90ce3f3f6628b096d25196053
[INFO] sha for GitHub repo glennw/project: 42abc4f46abc34d90ce3f3f6628b096d25196053
[INFO] validating manifest of glennw/project 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 glennw/project 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 glennw/project
[INFO] finished frobbing glennw/project
[INFO] frobbed toml for glennw/project written to work/ex/beta-1.38-1/sources/1.37.0/gh/glennw/project/Cargo.toml
[INFO] started frobbing glennw/project
[INFO] finished frobbing glennw/project
[INFO] frobbed toml for glennw/project written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/glennw/project/Cargo.toml
[INFO] crate glennw/project 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]     Updating git repository `https://github.com/glennw/featureB`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/glennw/project/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[INFO] the lockfile is outdated, regenerating it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] [stderr]     Updating git repository `https://github.com/glennw/featureA`
[INFO] [stderr]     Updating git repository `https://github.com/glennw/featureB`
[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] [stderr]     Updating git repository `https://github.com/glennw/featureA`
[INFO] [stderr]     Updating git repository `https://github.com/glennw/featureB`
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing glennw/project 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/glennw/project:/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] f2576916f3431eadd60f09f7c0b411ad01187d7193441c069ed68fc084dbaee6
[INFO] running `"docker" "start" "-a" "f2576916f3431eadd60f09f7c0b411ad01187d7193441c069ed68fc084dbaee6"`
[INFO] [stderr]    Compiling featureA v0.0.1 (https://github.com/glennw/featureA#c606c23e)
[INFO] [stderr]    Compiling project v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: expected identifier, found `"featureA"`
[INFO] [stderr]  --> src/main.rs:2:14
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate "featureA" as feature;
[INFO] [stderr]   |              ^^^^^^^^^^ expected identifier
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `project`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f2576916f3431eadd60f09f7c0b411ad01187d7193441c069ed68fc084dbaee6"`
[INFO] running `"docker" "rm" "-f" "f2576916f3431eadd60f09f7c0b411ad01187d7193441c069ed68fc084dbaee6"`
[INFO] [stdout] f2576916f3431eadd60f09f7c0b411ad01187d7193441c069ed68fc084dbaee6