[INFO] crate discotech 0.0.3 is already in cache
[INFO] extracting crate discotech 0.0.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/discotech/0.0.3
[INFO] extracting crate discotech 0.0.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/discotech/0.0.3
[INFO] validating manifest of discotech-0.0.3 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 discotech-0.0.3 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 discotech-0.0.3
[INFO] removed 0 missing tests
[INFO] finished frobbing discotech-0.0.3
[INFO] frobbed toml for discotech-0.0.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/discotech/0.0.3/Cargo.toml
[INFO] started frobbing discotech-0.0.3
[INFO] removed 0 missing tests
[INFO] finished frobbing discotech-0.0.3
[INFO] frobbed toml for discotech-0.0.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/discotech/0.0.3/Cargo.toml
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 discotech-0.0.3 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/discotech/0.0.3:/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] 26855a6c0b760c4717cdda21825657ac565ce4a1a0171897a2bcc52bab63db50
[INFO] running `"docker" "start" "-a" "26855a6c0b760c4717cdda21825657ac565ce4a1a0171897a2bcc52bab63db50"`
[INFO] [stderr]    Compiling bitflags v0.1.1
[INFO] [stderr]    Compiling bytes v0.2.11
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling byteorder v0.3.13
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling schedule_recv v0.0.1
[INFO] [stderr]    Compiling enum_primitive v0.0.2
[INFO] [stderr]    Compiling nix v0.3.10
[INFO] [stderr]    Compiling discotech_zookeeper v0.1.0
[INFO] [stderr] error: cannot find macro `select!` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/discotech_zookeeper-0.1.0/src/zookeeper.rs:163:21
[INFO] [stderr]     |
[INFO] [stderr] 163 |                     select! {
[INFO] [stderr]     |                     ^^^^^^
[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/discotech_zookeeper-0.1.0/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration, mpsc_select)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `secs` found for type `std::time::Duration` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/discotech_zookeeper-0.1.0/src/proto.rs:208:30
[INFO] [stderr]     |
[INFO] [stderr] 208 |             timeout: timeout.secs() as i32 * 1000,
[INFO] [stderr]     |                              ^^^^ private field, not a method
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `discotech_zookeeper`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "26855a6c0b760c4717cdda21825657ac565ce4a1a0171897a2bcc52bab63db50"`
[INFO] running `"docker" "rm" "-f" "26855a6c0b760c4717cdda21825657ac565ce4a1a0171897a2bcc52bab63db50"`
[INFO] [stdout] 26855a6c0b760c4717cdda21825657ac565ce4a1a0171897a2bcc52bab63db50