[INFO] updating cached repository BookOwl/nemo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BookOwl/nemo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BookOwl/nemo" "work/ex/beta-1.38-1/sources/1.37.0/gh/BookOwl/nemo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/BookOwl/nemo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BookOwl/nemo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BookOwl/nemo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BookOwl/nemo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d58040619f93e8b13dcc2de69daa5fd891a8793
[INFO] sha for GitHub repo BookOwl/nemo: 7d58040619f93e8b13dcc2de69daa5fd891a8793
[INFO] validating manifest of BookOwl/nemo 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 BookOwl/nemo 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 BookOwl/nemo
[INFO] finished frobbing BookOwl/nemo
[INFO] frobbed toml for BookOwl/nemo written to work/ex/beta-1.38-1/sources/1.37.0/gh/BookOwl/nemo/Cargo.toml
[INFO] started frobbing BookOwl/nemo
[INFO] finished frobbing BookOwl/nemo
[INFO] frobbed toml for BookOwl/nemo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BookOwl/nemo/Cargo.toml
[INFO] crate BookOwl/nemo 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] testing BookOwl/nemo 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/BookOwl/nemo:/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] 772e673322652291ff6789faf09104c32e51d43df5bee692d506b61b5fa76828
[INFO] running `"docker" "start" "-a" "772e673322652291ff6789faf09104c32e51d43df5bee692d506b61b5fa76828"`
[INFO] [stderr]    Compiling bit-vec v0.4.3
[INFO] [stderr]    Compiling lazy_static v0.2.4
[INFO] [stderr]    Compiling fixedbitset v0.1.5
[INFO] [stderr]    Compiling unicode-xid v0.0.2
[INFO] [stderr]    Compiling diff v0.1.10
[INFO] [stderr]    Compiling lalrpop-util v0.12.5
[INFO] [stderr]    Compiling term v0.4.5
[INFO] [stderr]    Compiling lalrpop-intern v0.12.5
[INFO] [stderr]    Compiling itertools v0.3.25
[INFO] [stderr]    Compiling regex-syntax v0.2.6
[INFO] [stderr]    Compiling bitflags v0.8.0
[INFO] [stderr]    Compiling bounded-spsc-queue v0.1.2
[INFO] [stderr] error[E0432]: unresolved import `alloc::heap`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bounded-spsc-queue-0.1.2/src/lib.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | use alloc::heap::{allocate, deallocate};
[INFO] [stderr]    |            ^^^^ could not find `heap` in `alloc`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `oom` in module `alloc`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bounded-spsc-queue-0.1.2/src/lib.rs:325:33
[INFO] [stderr]     |
[INFO] [stderr] 325 |     if ptr.is_null() { ::alloc::oom() }
[INFO] [stderr]     |                                 ^^^ not found in `alloc`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bounded-spsc-queue-0.1.2/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(heap_api, oom, alloc, box_syntax, optin_builtin_traits)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `bounded-spsc-queue`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "772e673322652291ff6789faf09104c32e51d43df5bee692d506b61b5fa76828"`
[INFO] running `"docker" "rm" "-f" "772e673322652291ff6789faf09104c32e51d43df5bee692d506b61b5fa76828"`
[INFO] [stdout] 772e673322652291ff6789faf09104c32e51d43df5bee692d506b61b5fa76828