[INFO] updating cached repository jamesmunns/cronbot-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jamesmunns/cronbot-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jamesmunns/cronbot-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/jamesmunns/cronbot-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jamesmunns/cronbot-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jamesmunns/cronbot-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jamesmunns/cronbot-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jamesmunns/cronbot-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9a65adb2563b7953c12c4b5badf28de0a127538c
[INFO] sha for GitHub repo jamesmunns/cronbot-rs: 9a65adb2563b7953c12c4b5badf28de0a127538c
[INFO] validating manifest of jamesmunns/cronbot-rs 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 jamesmunns/cronbot-rs 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 jamesmunns/cronbot-rs
[INFO] finished frobbing jamesmunns/cronbot-rs
[INFO] frobbed toml for jamesmunns/cronbot-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/jamesmunns/cronbot-rs/Cargo.toml
[INFO] started frobbing jamesmunns/cronbot-rs
[INFO] finished frobbing jamesmunns/cronbot-rs
[INFO] frobbed toml for jamesmunns/cronbot-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jamesmunns/cronbot-rs/Cargo.toml
[INFO] crate jamesmunns/cronbot-rs 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 jamesmunns/cronbot-rs 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jamesmunns/cronbot-rs:/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] 5396a2c3c1fe1e87cfaf1ff4d536c4df661b957cfb7b52b92d42c740a5990b27
[INFO] running `"docker" "start" "-a" "5396a2c3c1fe1e87cfaf1ff4d536c4df661b957cfb7b52b92d42c740a5990b27"`
[INFO] [stderr]    Compiling version_check v0.1.2
[INFO] [stderr]    Compiling openssl v0.9.14
[INFO] [stderr]    Compiling try_opt v0.1.1
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.14
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_urlencoded v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.2
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]    Compiling hyper v0.10.12
[INFO] [stderr]    Compiling cron v0.3.0
[INFO] [stderr] error[E0432]: unresolved import `std::collections::range`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cron-0.3.0/src/time_unit/mod.rs:18:23
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::collections::range::{RangeArgument};
[INFO] [stderr]    |                       ^^^^^ could not find `range` in `collections`
[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/cron-0.3.0/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(collections_range)]
[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/cron-0.3.0/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(conservative_impl_trait)]
[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/cron-0.3.0/src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(step_by)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `cron`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5396a2c3c1fe1e87cfaf1ff4d536c4df661b957cfb7b52b92d42c740a5990b27"`
[INFO] running `"docker" "rm" "-f" "5396a2c3c1fe1e87cfaf1ff4d536c4df661b957cfb7b52b92d42c740a5990b27"`
[INFO] [stdout] 5396a2c3c1fe1e87cfaf1ff4d536c4df661b957cfb7b52b92d42c740a5990b27