[INFO] updating cached repository j16r/bulkhead
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/j16r/bulkhead
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/j16r/bulkhead" "work/ex/beta-1.38-1/sources/1.37.0/gh/j16r/bulkhead"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/j16r/bulkhead'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/j16r/bulkhead" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/j16r/bulkhead"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/j16r/bulkhead'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1b13de5c6041e7da80187ca9c2190756603197da
[INFO] sha for GitHub repo j16r/bulkhead: 1b13de5c6041e7da80187ca9c2190756603197da
[INFO] validating manifest of j16r/bulkhead 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 j16r/bulkhead 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 j16r/bulkhead
[INFO] finished frobbing j16r/bulkhead
[INFO] frobbed toml for j16r/bulkhead written to work/ex/beta-1.38-1/sources/1.37.0/gh/j16r/bulkhead/Cargo.toml
[INFO] started frobbing j16r/bulkhead
[INFO] finished frobbing j16r/bulkhead
[INFO] frobbed toml for j16r/bulkhead written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/j16r/bulkhead/Cargo.toml
[INFO] crate j16r/bulkhead 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] 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 j16r/bulkhead 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/j16r/bulkhead:/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] d1c9aa2d6dee3f638f4c664de275f544c49b80ab3ceede2567b41788e4670f08
[INFO] running `"docker" "start" "-a" "d1c9aa2d6dee3f638f4c664de275f544c49b80ab3ceede2567b41788e4670f08"`
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling fallible-iterator v0.1.3
[INFO] [stderr]    Compiling md5 v0.3.3
[INFO] [stderr]    Compiling lazy_static v0.2.4
[INFO] [stderr]    Compiling serde v0.9.11
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling r2d2 v0.7.1
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling postgres-protocol v0.2.1
[INFO] [stderr]    Compiling postgres-shared v0.2.0
[INFO] [stderr]    Compiling persistent v0.3.0
[INFO] [stderr]    Compiling router v0.5.1
[INFO] [stderr]    Compiling postgres v0.14.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.1
[INFO] [stderr]    Compiling serde_derive v0.9.11
[INFO] [stderr]    Compiling r2d2_postgres v0.12.0
[INFO] [stderr]    Compiling serde_json v0.9.9
[INFO] [stderr]    Compiling bodyparser v0.6.0 (https://github.com/iron/body-parser.git#967e62ff)
[INFO] [stderr]    Compiling bulkhead v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `bulkhead`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d1c9aa2d6dee3f638f4c664de275f544c49b80ab3ceede2567b41788e4670f08"`
[INFO] running `"docker" "rm" "-f" "d1c9aa2d6dee3f638f4c664de275f544c49b80ab3ceede2567b41788e4670f08"`
[INFO] [stdout] d1c9aa2d6dee3f638f4c664de275f544c49b80ab3ceede2567b41788e4670f08