[INFO] updating cached repository acmcarther/next_space_coop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/acmcarther/next_space_coop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/acmcarther/next_space_coop" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/acmcarther/next_space_coop"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/acmcarther/next_space_coop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/acmcarther/next_space_coop" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/acmcarther/next_space_coop"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/acmcarther/next_space_coop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 05828fa3281ff433093bbd1abadeed69503cc729
[INFO] sha for GitHub repo acmcarther/next_space_coop: 05828fa3281ff433093bbd1abadeed69503cc729
[INFO] validating manifest of acmcarther/next_space_coop on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of acmcarther/next_space_coop on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing acmcarther/next_space_coop
[INFO] finished frobbing acmcarther/next_space_coop
[INFO] frobbed toml for acmcarther/next_space_coop written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/acmcarther/next_space_coop/Cargo.toml
[INFO] started frobbing acmcarther/next_space_coop
[INFO] finished frobbing acmcarther/next_space_coop
[INFO] frobbed toml for acmcarther/next_space_coop written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/acmcarther/next_space_coop/Cargo.toml
[INFO] crate acmcarther/next_space_coop already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking acmcarther/next_space_coop against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/acmcarther/next_space_coop:/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=forbid" "-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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4dc0d43f4849b6b6e0e3179f501ab82ba2bb8bf94f7c33e2860ce6922cab714c
[INFO] running `"docker" "start" "-a" "4dc0d43f4849b6b6e0e3179f501ab82ba2bb8bf94f7c33e2860ce6922cab714c"`
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling serde v0.9.7
[INFO] [stderr]     Checking threadpool v1.3.2
[INFO] [stderr]     Checking protobuf v1.2.1
[INFO] [stderr]     Checking error-chain v0.8.1
[INFO] [stderr]     Checking term_size v0.2.2
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking fern v0.3.5
[INFO] [stderr]     Checking capnp v0.7.5
[INFO] [stderr]     Checking pulse v0.5.3
[INFO] [stderr]     Checking ash v0.14.2
[INFO] [stderr]     Checking clap v2.20.3
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]     Checking env_logger v0.4.0
[INFO] [stderr] error[E0502]: cannot borrow `*reff` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/capnp-0.7.5/src/private/layout.rs:643:47
[INFO] [stderr]     |
[INFO] [stderr] 643 |         let ptr = try!(follow_fars(&mut reff, (*reff).target(), &mut segment));
[INFO] [stderr]     |                        ----------- ---------  ^^^^^^^ immutable borrow occurs here
[INFO] [stderr]     |                        |           |
[INFO] [stderr]     |                        |           mutable borrow occurs here
[INFO] [stderr]     |                        mutable borrow later used by call
[INFO] [stderr] 
[INFO] [stderr]     Checking specs v0.7.1
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0502`.
[INFO] [stderr] error: Could not compile `capnp`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4dc0d43f4849b6b6e0e3179f501ab82ba2bb8bf94f7c33e2860ce6922cab714c"`
[INFO] running `"docker" "rm" "-f" "4dc0d43f4849b6b6e0e3179f501ab82ba2bb8bf94f7c33e2860ce6922cab714c"`
[INFO] [stdout] 4dc0d43f4849b6b6e0e3179f501ab82ba2bb8bf94f7c33e2860ce6922cab714c